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Audio: Adjust components to new audio interface

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OSS driver, ALSA driver, audio-out test, avplay, and mixer

Issue #602
This commit is contained in:
Sebastian Sumpf 2012-12-20 17:34:33 +01:00 committed by Norman Feske
parent 238d6a29c5
commit 47bb48bdd6
11 changed files with 1125 additions and 1121 deletions
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2
dde_oss/src/drivers/oss/include/audio.h
View File

@ -22,6 +22,6 @@ int audio_init();
/**
* Play data of size
*/
int audio_play(short *data, int size);
int audio_play(short *data, unsigned size);
#endif /* _INCLUDE__AUDIO_H_ */

2
dde_oss/src/drivers/oss/include/os.h
View File

@ -196,7 +196,7 @@ enum {
#define GET_PROCESS_PID(p) -1
#define KERNEL_MALLOC(size) (dde_kit_large_malloc(size))
#define KERNEL_FREE(ptr) (dde_kit_large_free(ptr))
#define KERNEL_FREE(ptr) (dde_kit_large_free(ptr))
void * dma_alloc(oss_native_word *phys, size_t size);
#define CONTIG_MALLOC(osdev, sz, memlimit, phaddr, handle) dma_alloc(phaddr, sz)

362
dde_oss/src/drivers/oss/main.cc
View File

@ -1,5 +1,5 @@
/*
* \brief Audio-session-entry point
* \brief Audio-out session entry point
* \author Sebastian Sumpf
* \date 2012-11-20
*/
@ -19,7 +19,7 @@ extern "C" {
#include <base/sleep.h>
#include <root/component.h>
#include <cap_session/connection.h>
#include <audio_out_session/rpc_object.h>
#include <audio_session/rpc_object.h>
#include <util/misc_math.h>
#include <audio.h>
@ -27,202 +27,253 @@ extern "C" {
using namespace Genode;
static const bool verbose = false;
static bool audio_out_active = false;
enum Channel_number { LEFT, RIGHT, MAX_CHANNELS, INVALID = MAX_CHANNELS };
namespace Audio_out {
class Session_component;
enum Channel_number { LEFT, RIGHT, MAX_CHANNELS, INVALID = MAX_CHANNELS };
class Session_component;
class Out;
class Root;
struct Root_policy;
static Session_component *channel_acquired[MAX_CHANNELS];
}
class Session_component : public Session_rpc_object
{
private:
Ram_dataspace_capability _ds;
Channel_number _channel;
class Audio_out::Session_component : public Audio_out::Session_rpc_object
{
private:
Signal_dispatcher<Session_component> _process_packet_dispatcher;
Channel_number _channel;
Signal_context_capability _ctx_cap;
Signal_transmitter _signal;
Ram_dataspace_capability _alloc_dataspace(size_t size)
{
_ds = env()->ram_session()->alloc(size);
return _ds;
}
public:
void _process_packets(unsigned)
{
/* handle audio-out packets */
Session_component *left = channel_acquired[LEFT],
*right = channel_acquired[RIGHT];
while (left->channel()->packet_avail() &&
right->channel()->packet_avail() &&
left->channel()->ready_to_ack() &&
right->channel()->ready_to_ack()) {
Session_component(Channel_number channel, Signal_context_capability ctx_cap)
: Session_rpc_object(ctx_cap), _channel(channel), _ctx_cap(ctx_cap)
{
Audio_out::channel_acquired[_channel] = this;
_signal.context(ctx_cap);
}
/* get packets for channels */
Packet_descriptor p[MAX_CHANNELS];
static short data[2 * PERIOD];
p[LEFT] = left->channel()->get_packet();
p[RIGHT] = right->channel()->get_packet();
~Session_component()
{
Audio_out::channel_acquired[_channel] = 0;
}
/* convert float to S16LE */
for (int i = 0; i < 2 * PERIOD; i += 2) {
data[i] = left->channel()->packet_content(p[LEFT])[i / 2] * 32767;
data[i + 1] = right->channel()->packet_content(p[RIGHT])[i / 2] * 32767;
}
void start()
{
Session_rpc_object::start();
/* this will trigger Audio_out::Out::handle */
_signal.submit();
}
};
if (verbose)
PDBG("play packet");
/* send to driver */
int err;
if (audio_out_active)
if ((err = audio_play(data, 4 * PERIOD)))
PWRN("Error %d during playback", err);
class Audio_out::Out : public Driver_context
{
private:
/* acknowledge packet to the client */
if (p[LEFT].valid())
left->channel()->acknowledge_packet(p[LEFT]);
bool _active() {
return channel_acquired[LEFT] && channel_acquired[RIGHT] &&
channel_acquired[LEFT]->active() && channel_acquired[RIGHT]->active();
}
if (p[RIGHT].valid())
right->channel()->acknowledge_packet(p[RIGHT]);
Stream *left() { return channel_acquired[LEFT]->stream(); }
Stream *right() { return channel_acquired[RIGHT]->stream(); }
void _advance_position(Packet *l, Packet *r)
{
bool full_left = left()->full();
bool full_right = right()->full();
left()->pos(left()->packet_position(l));
right()->pos(right()->packet_position(r));
left()->increment_position();
right()->increment_position();
Session_component *channel_left = channel_acquired[LEFT];
Session_component *channel_right = channel_acquired[RIGHT];
if (full_left)
channel_left->alloc_submit();
if (full_right)
channel_right->alloc_submit();
channel_left->progress_submit();
channel_right->progress_submit();
}
bool _play_packet()
{
Packet *p_left = left()->get(left()->pos());
Packet *p_right = right()->get(right()->pos());
bool found = false;
for (int i = 0; i < QUEUE_SIZE; i++) {
if (p_left->valid() && p_right->valid()) {
found = true;
break;
}
p_left = left()->next(p_left);
p_right = right()->next(p_right);
}
public:
if (!found)
return false;
Session_component(Channel_number channel, size_t buffer_size,
Rpc_entrypoint &ep, Signal_receiver &sig_rec)
: Session_rpc_object(_alloc_dataspace(buffer_size), ep), _channel(channel),
_process_packet_dispatcher(sig_rec, *this,
&Session_component::_process_packets)
{
Audio_out::channel_acquired[_channel] = this;
Session_rpc_object::_channel.sigh_packet_avail(_process_packet_dispatcher);
Session_rpc_object::_channel.sigh_ready_to_ack(_process_packet_dispatcher);
/* convert float to S16LE */
static short data[2 * PERIOD];
for (int i = 0; i < 2 * PERIOD; i += 2) {
data[i] = p_left->content()[i / 2] * 32767;
data[i + 1] = p_right->content()[i / 2] * 32767;
}
~Session_component()
{
Audio_out::channel_acquired[_channel] = 0;
p_left->invalidate();
p_right->invalidate();
env()->ram_session()->free(_ds);
if (verbose)
PDBG("play packet");
/* send to driver */
int err;
if (audio_out_active)
if ((err = audio_play(data, 4 * PERIOD)))
PWRN("Error %d during playback", err);
p_left->mark_as_played();
p_right->mark_as_played();
_advance_position(p_left, p_right);
return true;
}
public:
void handle()
{
while (true) {
if (!_active()) {
//TODO: may stop device
return;
}
/* play one packet */
if (!_play_packet())
return;
/* give others a try */
Service_handler::s()->check_signal(false);
}
}
/*********************************
** Audio-out-session interface **
*********************************/
const char *debug() { return "Audio out"; }
};
void flush()
{
while (channel()->packet_avail())
channel()->acknowledge_packet(channel()->get_packet());
}
void sync_session(Session_capability audio_out_session) { }
static bool channel_number_from_string(const char *name,
Channel_number *out_number)
{
static struct Names {
const char *name;
Channel_number number;
} names[] = {
{ "left", LEFT }, { "front left", LEFT },
{ "right", RIGHT }, { "front right", RIGHT },
{ 0, INVALID }
};
static bool channel_number_from_string(const char *name,
Channel_number *out_number)
for (Names *n = names; n->name; ++n)
if (!Genode::strcmp(name, n->name)) {
*out_number = n->number;
return true;
}
return false;
}
/**
* Session creation policy for our service
*/
struct Audio_out::Root_policy
{
void aquire(const char *args)
{
static struct Names {
const char *name;
Channel_number number;
} names[] = {
{ "left", LEFT }, { "front left", LEFT },
{ "right", RIGHT }, { "front right", RIGHT },
{ 0, INVALID }
};
size_t ram_quota =
Arg_string::find_arg(args, "ram_quota" ).ulong_value(0);
size_t session_size =
align_addr(sizeof(Audio_out::Session_component), 12);
for (Names *n = names; n->name; ++n)
if (!Genode::strcmp(name, n->name)) {
*out_number = n->number;
return true;
}
if ((ram_quota < session_size) ||
(sizeof(Stream) > ram_quota - session_size)) {
PERR("insufficient 'ram_quota', got %zd, need %zd",
ram_quota, sizeof(Stream) + session_size);
throw ::Root::Quota_exceeded();
}
return false;
char channel_name[16];
Channel_number channel_number;
Arg_string::find_arg(args, "channel").string(channel_name,
sizeof(channel_name),
"left");
if (!channel_number_from_string(channel_name, &channel_number))
throw ::Root::Invalid_args();
if (Audio_out::channel_acquired[channel_number])
throw ::Root::Unavailable();
}
/**
* Session creation policy for our service
*/
struct Root_policy
{
void aquire(const char *args)
{
size_t ram_quota =
Arg_string::find_arg(args, "ram_quota" ).ulong_value(0);
size_t buffer_size =
Arg_string::find_arg(args, "buffer_size").ulong_value(0);
size_t session_size =
align_addr(sizeof(Session_component), 12);
void release() { }
};
if ((ram_quota < session_size) ||
(buffer_size > ram_quota - session_size)) {
PERR("insufficient 'ram_quota', got %zd, need %zd",
ram_quota, buffer_size + session_size);
throw Root::Quota_exceeded();
}
namespace Audio_out {
typedef Root_component<Session_component, Root_policy> Root_component;
}
/**
* Root component, handling new session requests.
*/
class Audio_out::Root : public Audio_out::Root_component
{
private:
Signal_context_capability _ctx_cap;
protected:
Session_component *_create_session(const char *args)
{
if (!audio_out_active)
throw Root::Unavailable();
char channel_name[16];
Channel_number channel_number;
Channel_number channel_number = INVALID;
Arg_string::find_arg(args, "channel").string(channel_name,
sizeof(channel_name),
"left");
if (!channel_number_from_string(channel_name, &channel_number))
throw Root::Invalid_args();
if (channel_acquired[channel_number])
throw Root::Unavailable();
channel_number_from_string(channel_name, &channel_number);
return new (md_alloc())
Session_component(channel_number, _ctx_cap);
}
void release() { }
};
public:
typedef Root_component<Session_component, Root_policy> Root_component;
/*
* Root component, handling new session requests.
*/
class Root : public Root_component
{
private:
Rpc_entrypoint &_channel_ep;
Signal_receiver &_sig_rec;
protected:
Session_component *_create_session(const char *args)
{
size_t buffer_size =
Arg_string::find_arg(args, "buffer_size").ulong_value(0);
if (!audio_out_active)
throw Root::Unavailable();
char channel_name[16];
Channel_number channel_number = INVALID;
Arg_string::find_arg(args, "channel").string(channel_name,
sizeof(channel_name),
"left");
channel_number_from_string(channel_name, &channel_number);
return new (md_alloc())
Session_component(channel_number, buffer_size, _channel_ep, _sig_rec);
}
public:
Root(Rpc_entrypoint &session_ep, Allocator *md_alloc, Signal_receiver &sig_rec)
: Root_component(&session_ep, md_alloc), _channel_ep(session_ep), _sig_rec(sig_rec)
{ }
};
}
Root(Rpc_entrypoint *session_ep, Allocator *md_alloc, Signal_context_capability ctx_cap)
: Root_component(session_ep, md_alloc), _ctx_cap(ctx_cap)
{ }
};
int main()
@ -242,7 +293,8 @@ int main()
audio_out_active = audio_init() ? false : true;
if (audio_out_active) {
static Audio_out::Root audio_root(ep, env()->heap(), recv);
static Audio_out::Out out;
static Audio_out::Root audio_root(&ep, env()->heap(), recv.manage(&out));
env()->parent()->announce(ep.manage(&audio_root));
}

6
dde_oss/src/drivers/oss/os.cc
View File

@ -350,7 +350,7 @@ int audio_init()
}
/* set fragment policy (TODO: make configurable) */
int policy = 8;
int policy = 1;
if (ioctl_dsp(SNDCTL_DSP_POLICY, &policy) == -1)
PERR("Error setting policy");
@ -379,12 +379,12 @@ int audio_init()
}
int audio_play(short *data, int size)
int audio_play(short *data, unsigned size)
{
uio_t io = { (char *)data, size, UIO_WRITE };
int ret;
if ((ret = dsp_drv->write(0, 0, &io, size)) != size)
if ((ret = dsp_drv->write(0, 0, &io, size)) != (int)size)
PERR("Error writing data s: %d r: %d func %p", size, ret, dsp_drv->write);
Irq::check_irq();

81
libports/run/avplay.run
View File

@ -1,10 +1,29 @@
#
# Build
#
build {
core init
drivers/timer
drivers/framebuffer drivers/pci drivers/input drivers/audio_out
app/avplay
drivers/framebuffer drivers/pci drivers/input drivers/oss
server/mixer
app/avplay drivers/acpi
}
#
# Download media file
#
set media_url "ftp://ftp.untergrund.net/users/ae/dhstv/escape-chotro.mp4"
if {![file exists bin/mediafile]} {
puts "downloading media file from $media_url"
catch { exec wget -O bin/mediafile $media_url }
}
#
# Generate config
#
create_boot_directory
set config {
@ -36,11 +55,28 @@ append_if [have_spec sdl] config {
</provides>
</start>}
append_if [have_spec pci] config {
append_if [have_spec acpi] config {
<start name="acpi">
<resource name="RAM" quantum="2M"/>
<binary name="acpi_drv"/>
<provides>
<service name="PCI"/>
<service name="IRQ" />
</provides>
<route>
<any-service> <parent/> <any-child /> </any-service>
</route>
</start>
}
append_if [expr [have_spec pci] && ![have_spec acpi]] config {
<start name="pci_drv">
<resource name="RAM" quantum="1M"/>
<provides><service name="PCI"/></provides>
</start>}
<resource name="RAM" quantum="2M"/>
<provides>
<service name="PCI"/>
</provides>
</start>
}
append_if [have_spec vesa] config {
<start name="vesa_drv">
@ -59,10 +95,23 @@ append config {
<resource name="RAM" quantum="1M"/>
<provides><service name="Timer"/></provides>
</start>
<start name="audio_out_drv">
<resource name="RAM" quantum="2M"/>
<provides><service name="Audio_out"/></provides>
</start>
<start name="oss_drv">
<resource name="RAM" quantum="6M"/>
<route>
<any-service> <any-child /> <parent /></any-service>
</route>
<provides>
<service name="Audio_out"/>
</provides>
</start>
<start name="mixer">
<resource name="RAM" quantum="1M"/>
<provides><service name="Audio_out"/></provides>
<route>
<service name="Audio_out"> <child name="oss_drv"/> </service>
<any-service> <parent/> <any-child/> </any-service>
</route>
</start>
<start name="avplay">
<resource name="RAM" quantum="64M"/>
<config>
@ -70,14 +119,23 @@ append config {
<arg value="mediafile"/>
<sdl_audio_volume value="100"/>
</config>
<route>
<service name="PCI"> <any-child /> </service>
<service name="Audio_out"> <child name="mixer"/> </service>
<any-service> <parent/> <any-child /> </any-service>
</route>
</start>
</config>
}
install_config $config
#
# Boot modules
#
set boot_modules {
core init timer audio_out_drv avplay
core init timer oss_drv mixer avplay
ld.lib.so libc.lib.so libc_log.lib.so libc_rom.lib.so libm.lib.so pthread.lib.so zlib.lib.so sdl.lib.so
avfilter.lib.so avutil.lib.so avcodec.lib.so avformat.lib.so swscale.lib.so
mediafile
@ -85,6 +143,7 @@ set boot_modules {
lappend_if [have_spec linux] boot_modules fb_sdl
lappend_if [have_spec pci] boot_modules pci_drv
lappend_if [have_spec pci] boot_modules acpi_drv
lappend_if [have_spec vesa] boot_modules vesa_drv
lappend_if [have_spec ps2] boot_modules ps2_drv

95
libports/src/lib/sdl/audio/SDL_genodeaudio.cc
View File

@ -1,6 +1,7 @@
/*
* \brief Genode-specific audio backend
* \author Christian Prochaska
* \author Sebastian Sumpf
* \date 2012-03-13
*
* based on the dummy SDL audio driver
@ -16,14 +17,12 @@
#include <base/allocator_avl.h>
#include <base/printf.h>
#include <base/thread.h>
#include <audio_out_session/connection.h>
#include <audio_session/connection.h>
#include <os/config.h>
enum {
AUDIO_OUT_SAMPLE_SIZE = sizeof(float),
AUDIO_OUT_CHANNELS = 2,
AUDIO_OUT_FREQ = 44100,
AUDIO_OUT_SAMPLES = 1024,
AUDIO_CHANNELS = 2,
};
using Genode::env;
@ -52,15 +51,11 @@ extern "C" {
/* The tag name used by Genode audio */
#define GENODEAUD_DRIVER_NAME "genode"
typedef Audio_out::Session::Channel::Source Stream;
struct SDL_PrivateAudioData {
Uint8 *mixbuf;
Uint32 mixlen;
Genode::Allocator_avl *block_alloc[AUDIO_OUT_CHANNELS];
Audio_out::Connection *audio_out[AUDIO_OUT_CHANNELS];
Stream *stream[AUDIO_OUT_CHANNELS];
Uint8 *mixbuf;
Uint32 mixlen;
Audio_out::Connection *audio[AUDIO_CHANNELS];
};
@ -82,7 +77,10 @@ static void read_config()
/* read volume from config file */
try {
unsigned int config_volume;
Genode::config()->xml_node().sub_node("sdl_audio_volume").attribute("value").value(&config_volume);
Genode::config()->xml_node().sub_node("sdl_audio_volume")
.attribute("value").value(&config_volume);
volume = (float)config_volume / 100;
}
catch (Genode::Config::Invalid) { }
@ -108,10 +106,8 @@ static int GENODEAUD_Available(void)
static void GENODEAUD_DeleteDevice(SDL_AudioDevice *device)
{
for (int channel = 0; channel < AUDIO_OUT_CHANNELS; channel++) {
destroy(env()->heap(), device->hidden->audio_out[channel]);
destroy(env()->heap(), device->hidden->block_alloc[channel]);
}
for (int channel = 0; channel < AUDIO_CHANNELS; channel++)
destroy(env()->heap(), device->hidden->audio[channel]);
SDL_free(device->hidden);
SDL_free(device);
@ -148,23 +144,19 @@ static SDL_AudioDevice *GENODEAUD_CreateDevice(int devindex)
_this->free = GENODEAUD_DeleteDevice;
/* connect to 'Audio_out' service */
for (int channel = 0; channel < AUDIO_OUT_CHANNELS; channel++) {
_this->hidden->block_alloc[channel] = new (env()->heap()) Allocator_avl(env()->heap());
for (int channel = 0; channel < AUDIO_CHANNELS; channel++) {
try {
_this->hidden->audio_out[channel] = new (env()->heap())
Audio_out::Connection(channel_names[channel], _this->hidden->block_alloc[channel]);
_this->hidden->stream[channel] = _this->hidden->audio_out[channel]->stream();
_this->hidden->audio[channel] = new (env()->heap())
Audio_out::Connection(channel_names[channel]);
_this->hidden->audio[channel]->start();
} catch(Genode::Parent::Service_denied) {
PERR("Could not connect to 'Audio_out' service.");
destroy(env()->heap(), _this->hidden->block_alloc[channel]);
while(--channel > 0) {
destroy(env()->heap(), _this->hidden->audio_out[channel]);
destroy(env()->heap(), _this->hidden->block_alloc[channel]);
}
while(--channel > 0)
destroy(env()->heap(), _this->hidden->audio[channel]);
return NULL;
}
if (channel > 0)
_this->hidden->audio_out[channel]->sync_session(_this->hidden->audio_out[channel-1]->session_capability());
}
Genode::config()->sigh(signal_receiver()->manage(&config_signal_context));
@ -183,27 +175,32 @@ AudioBootStrap GENODEAUD_bootstrap = {
/* This function waits until it is possible to write a full sound buffer */
static void GENODEAUD_WaitAudio(_THIS)
{
for (int channel = 0; channel < AUDIO_OUT_CHANNELS; channel++)
while (_this->hidden->stream[channel]->ack_avail() ||
!_this->hidden->stream[channel]->ready_to_submit()) {
_this->hidden->stream[channel]->release_packet(_this->hidden->stream[channel]->get_acked_packet());
}
for (int channel = 0; channel < AUDIO_CHANNELS; channel++) {
Audio_out::Connection *connection = _this->hidden->audio[channel];
/* wait until allocation is possible */
if (connection->stream()->full())
connection->wait_for_alloc();
}
}
static void GENODEAUD_PlayAudio(_THIS)
{
Packet_descriptor p[AUDIO_OUT_CHANNELS];
Audio_out::Packet *p[AUDIO_CHANNELS];
for (int channel = 0; channel < AUDIO_CHANNELS; channel++)
while (1) {
Audio_out::Connection *connection = _this->hidden->audio[channel];
for (int channel = 0; channel < AUDIO_OUT_CHANNELS; channel++)
while (1)
try {
p[channel] = _this->hidden->stream[channel]->alloc_packet(AUDIO_OUT_SAMPLE_SIZE * AUDIO_OUT_SAMPLES);
p[channel] = connection->stream()->alloc();
break;
} catch (Stream::Packet_alloc_failed) {
} catch (Audio_out::Stream::Alloc_failed) {
/* wait for next finished packet */
_this->hidden->stream[channel]->release_packet(_this->hidden->stream[channel]->get_acked_packet());
connection->wait_for_alloc();
}
}
if (signal_receiver()->pending()) {
signal_receiver()->wait_for_signal();
@ -211,13 +208,13 @@ static void GENODEAUD_PlayAudio(_THIS)
read_config();
}
for (int sample = 0; sample < AUDIO_OUT_SAMPLES; sample++)
for (int channel = 0; channel < AUDIO_OUT_CHANNELS; channel++)
_this->hidden->stream[channel]->packet_content(p[channel])[sample] =
volume * (float)(((int16_t*)_this->hidden->mixbuf)[sample * AUDIO_OUT_CHANNELS + channel]) / 32768;
for (int sample = 0; sample < Audio_out::PERIOD; sample++)
for (int channel = 0; channel < AUDIO_CHANNELS; channel++)
p[channel]->content()[sample] =
volume * (float)(((int16_t*)_this->hidden->mixbuf)[sample * AUDIO_CHANNELS + channel]) / 32768;
for (int channel = 0; channel < AUDIO_OUT_CHANNELS; channel++)
_this->hidden->stream[channel]->submit_packet(p[channel]);
for (int channel = 0; channel < AUDIO_CHANNELS; channel++)
_this->hidden->audio[channel]->submit(p[channel]);
}
@ -243,10 +240,10 @@ static int GENODEAUD_OpenAudio(_THIS, SDL_AudioSpec *spec)
PDBG("requested samples = %u", spec->samples);
PDBG("requested size = %u", spec->size);
spec->channels = AUDIO_OUT_CHANNELS;
spec->channels = AUDIO_CHANNELS;
spec->format = AUDIO_S16LSB;
spec->freq = AUDIO_OUT_FREQ;
spec->samples = AUDIO_OUT_SAMPLES;
spec->freq = Audio_out::SAMPLE_RATE;
spec->samples = Audio_out::PERIOD;
SDL_CalculateAudioSpec(spec);
/* Allocate mixing buffer */

144
os/run/mixer.run Normal file
View File

@ -0,0 +1,144 @@
#
# Build
#
# generic components
set build_components {
core init
drivers/timer
server/mixer
test/audio_out
}
# platform-specific components
if {[have_spec linux]} {
lappend build_components drivers/audio_out
} else {
lappend build_components drivers/pci
lappend build_components drivers/acpi
lappend build_components drivers/oss
}
build $build_components
create_boot_directory
#
# Config
#
set config {
<config>
<parent-provides>
<service name="ROM"/>
<service name="RAM"/>
<service name="IRQ"/>
<service name="IO_MEM"/>
<service name="IO_PORT"/>
<service name="CAP"/>
<service name="PD"/>
<service name="RM"/>
<service name="CPU"/>
<service name="LOG"/>
<service name="SIGNAL"/>
</parent-provides>
<default-route>
<service name="Audio_out"> <child name="mixer"/> </service>
<any-service> <parent/> <any-child/> </any-service>
</default-route>
}
if {![have_spec linux]} {
append config {
<start name="acpi">
<resource name="RAM" quantum="2M"/>
<binary name="acpi_drv"/>
<provides>
<service name="PCI"/>
<service name="IRQ" />
</provides>
<route>
<service name="PCI"> <any-child /> </service>
<any-service> <parent/> <any-child /> </any-service>
</route>
</start>
<start name="audio_out_drv">
<binary name="oss_drv" />
<resource name="RAM" quantum="6M"/>
<route>
<service name="IRQ"><child name="acpi" /></service>
<any-service> <parent /> <any-child /></any-service>
</route>
<provides>
<service name="Audio_out"/>
</provides>
</start>
}
} else {
append config {
<start name="audio_out_drv">
<resource name="RAM" quantum="1M" />
<provides>
<service name="Audio_out" />
</provides>
</start>
}
}
append config {
<start name="timer">
<resource name="RAM" quantum="1M"/>
<provides><service name="Timer"/></provides>
</start>
<start name="mixer">
<resource name="RAM" quantum="1M"/>
<provides><service name="Audio_out"/></provides>
<route>
<service name="Audio_out"> <child name="audio_out_drv"/> </service>
<any-service> <parent/> <any-child/> </any-service>
</route>
</start>
<start name="audio0">
<binary name="test-audio_out"/>
<resource name="RAM" quantum="8M"/>
<config>
<filename>sample.raw</filename>
<filename>vogel.f32</filename>
</config>
<route>
<service name="Audio_out"> <child name="mixer"/> </service>
<any-service> <parent/> <any-child/> </any-service>
</route>
</start>
</config>
}
install_config $config
#
# Boot modules
#
# generic modules
set boot_modules {
core init
timer
test-audio_out
sample.raw
vogel.f32
mixer
}
# platform-specific components
if {[have_spec linux]} {
lappend boot_modules audio_out_drv
} else {
lappend boot_modules oss_drv
lappend boot_modules acpi_drv
lappend boot_modules pci_drv
}
build_boot_image $boot_modules
append qemu_args "-m 256 -soundhw es1370 -nographic"
run_genode_until forever

4
os/src/drivers/audio_out/linux/alsa.c
View File

@ -39,13 +39,13 @@ int audio_drv_init(void)
if ((err = snd_pcm_hw_params_set_format(playback_handle, hw_params, SND_PCM_FORMAT_S16_LE)) < 0)
return -5;
if ((err = snd_pcm_hw_params_set_rate_near(playback_handle, hw_params, &rate, 0)) < 0)
if ((err = snd_pcm_hw_params_set_rate(playback_handle, hw_params, rate, 0)) < 0)
return -6;
if ((err = snd_pcm_hw_params_set_channels(playback_handle, hw_params, 2)) < 0)
return -7;
if ((err = snd_pcm_hw_params_set_period_size(playback_handle, hw_params, 4096, 0)) < 0)
if ((err = snd_pcm_hw_params_set_period_size(playback_handle, hw_params, 2048, 0)) < 0)
return -8;
if ((err = snd_pcm_hw_params_set_periods(playback_handle, hw_params, 4, 0)) < 0)

441
os/src/drivers/audio_out/linux/main.cc
View File

@ -1,9 +1,12 @@
/*
* \brief Audio-out driver for Linux
* \brief Audio_out-out driver for Linux
* \author Christian Helmuth
* \author Sebastian Sumpf
* \date 2010-05-11
*
* FIXME session and driver shutdown not implemented (audio_drv_stop)
*
* 2013-01-09: Adapted to news audio interface
*/
/*
@ -17,7 +20,7 @@
#include <base/sleep.h>
#include <root/component.h>
#include <cap_session/connection.h>
#include <audio_out_session/rpc_object.h>
#include <audio_session/rpc_object.h>
#include <util/misc_math.h>
#include "alsa.h"
@ -26,222 +29,242 @@ using namespace Genode;
static const bool verbose = false;
namespace Audio_out {
enum Channel_number { LEFT, RIGHT, MAX_CHANNELS, INVALID = MAX_CHANNELS };
class Session_component;
enum Channel_number { LEFT, RIGHT, MAX_CHANNELS, INVALID = MAX_CHANNELS };
namespace Audio_out
{
class Session_component;
class Out;
class Root;
struct Root_policy;
static Session_component *channel_acquired[MAX_CHANNELS];
static Semaphore channel_sema;
};
class Session_component : public Session_rpc_object
{
private:
class Audio_out::Session_component : public Audio_out::Session_rpc_object
{
private:
Ram_dataspace_capability _ds;
Channel_number _channel;
Channel_number _channel;
Ram_dataspace_capability _alloc_dataspace(size_t size)
{
_ds = env()->ram_session()->alloc(size);
return _ds;
}
public:
public:
Session_component(Channel_number channel, size_t buffer_size,
Rpc_entrypoint &ep)
:
Session_rpc_object(_alloc_dataspace(buffer_size), ep),
_channel(channel)
{
Audio_out::channel_acquired[_channel] = this;
channel_sema.up();
}
~Session_component()
{
channel_sema.down();
Audio_out::channel_acquired[_channel] = 0;
env()->ram_session()->free(_ds);
}
/*********************************
** Audio-out session interface **
*********************************/
void flush()
{
while (channel()->packet_avail())
channel()->acknowledge_packet(channel()->get_packet());
}
void sync_session(Session_capability audio_out_session) { }
};
static bool channel_number_from_string(const char *name,
Channel_number *out_number)
{
static struct Names {
const char *name;
Channel_number number;
} names[] = {
{ "left", LEFT }, { "front left", LEFT },
{ "right", RIGHT }, { "front right", RIGHT },
{ 0, INVALID }
};
for (Names *n = names; n->name; ++n)
if (!strcmp(name, n->name)) {
*out_number = n->number;
return true;
}
return false;
}
/**
* Session creation policy for our service
*/
struct Root_policy
{
void aquire(const char *args)
Session_component(Channel_number channel, Signal_context_capability data_cap)
:
Session_rpc_object(data_cap),
_channel(channel)
{
size_t ram_quota =
Arg_string::find_arg(args, "ram_quota" ).ulong_value(0);
size_t buffer_size =
Arg_string::find_arg(args, "buffer_size").ulong_value(0);
size_t session_size =
align_addr(sizeof(Session_component), 12);
if ((ram_quota < session_size) ||
(buffer_size > ram_quota - session_size)) {
PERR("insufficient 'ram_quota', got %zd, need %zd",
ram_quota, buffer_size + session_size);
throw Root::Quota_exceeded();
}
char channel_name[16];
Channel_number channel_number;
Arg_string::find_arg(args, "channel").string(channel_name,
sizeof(channel_name),
"left");
if (!channel_number_from_string(channel_name, &channel_number))
throw Root::Invalid_args();
if (channel_acquired[channel_number])
throw Root::Unavailable();
Audio_out::channel_acquired[_channel] = this;
}
void release() { }
~Session_component()
{
Audio_out::channel_acquired[_channel] = 0;
}
};
static bool channel_number_from_string(const char *name,
Channel_number *out_number)
{
static struct Names {
const char *name;
Channel_number number;
} names[] = {
{ "left", LEFT }, { "front left", LEFT },
{ "right", RIGHT }, { "front right", RIGHT },
{ 0, INVALID }
};
typedef Root_component<Session_component, Root_policy> Root_component;
for (Names *n = names; n->name; ++n)
if (!strcmp(name, n->name)) {
*out_number = n->number;
return true;
}
/*
* Root component, handling new session requests.
*/
class Root : public Root_component,
private Thread<0x2000>
{
private:
Semaphore _startup_sema; /* thread startup sync */
Rpc_entrypoint &_channel_ep;
bool _packets_available(Session_component *channel)
{
if (channel && channel->channel()->packet_avail())
return true;
else
return false;
}
void entry()
{
audio_drv_adopt_myself();
/* indicate thread-startup completion */
_startup_sema.up();
/* handle audio-out packets */
while (true) {
for (int i = 0; i < MAX_CHANNELS; ++i)
channel_sema.down();
Session_component *left = channel_acquired[LEFT],
*right = channel_acquired[RIGHT];
/* get packets for channels */
Packet_descriptor p[MAX_CHANNELS];
static short data[2 * PERIOD];
p[LEFT] = left->channel()->get_packet();
for (int i = 0; i < 2 * PERIOD; i += 2)
data[i] = left->channel()->packet_content(p[LEFT])[i / 2] * 32767;
p[RIGHT] = right->channel()->get_packet();
for (int i = 1; i < 2 * PERIOD; i += 2)
data[i] = right->channel()->packet_content(p[RIGHT])[i / 2] * 32767;
if (verbose)
PDBG("play packet");
/* blocking-write packet to ALSA */
while (int err = audio_drv_play(data, PERIOD)) {
if (verbose) PERR("Error %d during playback", err);
audio_drv_stop();
audio_drv_start();
}
/* acknowledge packet to the client */
if (p[LEFT].valid())
left->channel()->acknowledge_packet(p[LEFT]);
if (p[RIGHT].valid())
right->channel()->acknowledge_packet(p[RIGHT]);
for (int i = 0; i < MAX_CHANNELS; ++i)
channel_sema.up();
}
}
protected:
Session_component *_create_session(const char *args)
{
size_t buffer_size =
Arg_string::find_arg(args, "buffer_size").ulong_value(0);
char channel_name[16];
Channel_number channel_number = INVALID;
Arg_string::find_arg(args, "channel").string(channel_name,
sizeof(channel_name),
"left");
channel_number_from_string(channel_name, &channel_number);
return new (md_alloc())
Session_component(channel_number, buffer_size, _channel_ep);
}
public:
Root(Rpc_entrypoint *session_ep, Allocator *md_alloc)
: Root_component(session_ep, md_alloc), _channel_ep(*session_ep)
{
/* synchronize with root thread startup */
start();
_startup_sema.down();
}
};
return false;
}
/*
* Manually initialize the 'lx_environ' pointer, needed because 'nic_drv' is not
* using the normal Genode startup code.
* Root component, handling new session requests.
*/
class Audio_out::Out : public Thread<1024 * sizeof(addr_t)>
{
private:
Signal_receiver *_data_recv; /* data is available */
bool _active() {
return channel_acquired[LEFT] && channel_acquired[RIGHT] &&
channel_acquired[LEFT]->active() && channel_acquired[RIGHT]->active();
}
Stream *left() { return channel_acquired[LEFT]->stream(); }
Stream *right() { return channel_acquired[RIGHT]->stream(); }
void _advance_position(Packet *l, Packet *r)
{
bool full_left = left()->full();
bool full_right = right()->full();
left()->pos(left()->packet_position(l));
right()->pos(right()->packet_position(l));
left()->increment_position();
right()->increment_position();
Session_component *channel_left = channel_acquired[LEFT];
Session_component *channel_right = channel_acquired[RIGHT];
if (full_left)
channel_left->alloc_submit();
if (full_right)
channel_right->alloc_submit();
channel_left->progress_submit();
channel_right->progress_submit();
}
bool _play_packet()
{
Packet *p_left = left()->get(left()->pos());
Packet *p_right = right()->get(left()->pos());
bool found = false;
for (int i = 0; i < QUEUE_SIZE; i++) {
if (p_left->valid() && p_right->valid()) {
found = true;
break;
}
p_left = left()->next(p_left);
p_right = right()->next(p_right);
}
if (!found)
return false;
/* convert float to S16LE */
static short data[2 * PERIOD];
for (int i = 0; i < 2 * PERIOD; i += 2) {
data[i] = p_left->content()[i / 2] * 32767;
data[i + 1] = p_right->content()[i / 2] * 32767;
}
p_left->invalidate();
p_right->invalidate();
if (verbose)
PDBG("play packet");
/* blocking-write packet to ALSA */
while (int err = audio_drv_play(data, PERIOD)) {
if (verbose) PERR("Error %d during playback", err);
audio_drv_stop();
audio_drv_start();
}
p_left->mark_as_played();
p_right->mark_as_played();
_advance_position(p_left, p_right);
return true;
}
public:
Out(Signal_receiver *data_recv)
: Thread("audio_out"), _data_recv(data_recv) { }
void entry()
{
audio_drv_adopt_myself();
/* handle audio out */
while (true)
if (!_active() || !_play_packet())
_data_recv->wait_for_signal();
}
};
/**
* Session creation policy for our service
*/
struct Audio_out::Root_policy
{
void aquire(const char *args)
{
size_t ram_quota =
Arg_string::find_arg(args, "ram_quota" ).ulong_value(0);
size_t session_size =
align_addr(sizeof(Audio_out::Session_component), 12);
if ((ram_quota < session_size) ||
(sizeof(Stream) > ram_quota - session_size)) {
PERR("insufficient 'ram_quota', got %zd, need %zd",
ram_quota, sizeof(Stream) + session_size);
throw ::Root::Quota_exceeded();
}
char channel_name[16];
Channel_number channel_number;
Arg_string::find_arg(args, "channel").string(channel_name,
sizeof(channel_name),
"left");
if (!channel_number_from_string(channel_name, &channel_number))
throw ::Root::Invalid_args();
if (Audio_out::channel_acquired[channel_number])
throw ::Root::Unavailable();
}
void release() { }
};
namespace Audio_out {
typedef Root_component<Session_component, Root_policy> Root_component;
}
class Audio_out::Root : public Audio_out::Root_component
{
private:
Signal_context_capability _data_cap;
protected:
Session_component *_create_session(const char *args)
{
char channel_name[16];
Channel_number channel_number = INVALID;
Arg_string::find_arg(args, "channel").string(channel_name,
sizeof(channel_name),
"left");
channel_number_from_string(channel_name, &channel_number);
return new (md_alloc())
Session_component(channel_number, _data_cap);
}
public:
Root(Rpc_entrypoint *session_ep, Allocator *md_alloc, Signal_context_capability data_cap)
: Root_component(session_ep, md_alloc), _data_cap(data_cap)
{ }
};
/*
* Manually initialize the 'lx_environ' pointer, needed because 'nic_drv' is
* not using the normal Genode startup code.
*/
extern char **environ;
char **lx_environ = environ;
@ -249,9 +272,10 @@ char **lx_environ = environ;
int main(int argc, char **argv)
{
enum { STACK_SIZE = 4096 };
static Cap_connection cap;
static Rpc_entrypoint ep(&cap, STACK_SIZE, "audio_ep");
/* setup data available signal */
static Signal_receiver data_recv;
static Signal_context data_context;
static Signal_context_capability data_cap(data_recv.manage(&data_context));
/* init ALSA */
int err = audio_drv_init();
@ -261,9 +285,18 @@ int main(int argc, char **argv)
}
audio_drv_start();
/* start output thread */
Audio_out::Out *out = new(env()->heap()) Audio_out::Out(&data_recv);
out->start();
enum { STACK_SIZE = 1024 * sizeof(addr_t) };
static Cap_connection cap;
static Rpc_entrypoint ep(&cap, STACK_SIZE, "audio_ep");
/* setup service */
static Audio_out::Root audio_root(&ep, env()->heap());
static Audio_out::Root audio_root(&ep, env()->heap(), data_cap);
env()->parent()->announce(ep.manage(&audio_root));
sleep_forever();
return 0;
}

1025
os/src/server/mixer/mixer.cc
View File

File diff suppressed because it is too large Load Diff

84
os/src/test/audio_out/main.cc
View File

@ -15,13 +15,17 @@
* under the terms of the GNU General Public License version 2.
*/
#include <base/allocator_avl.h>
#include <audio_session/connection.h>
#include <base/printf.h>
#include <base/sleep.h>
#include <base/thread.h>
#include <audio_out_session/connection.h>
#include <rom_session/connection.h>
#include <dataspace/client.h>
#include <os/config.h>
using namespace Genode;
using namespace Genode;
using namespace Audio_out;
@ -29,11 +33,12 @@ static const bool verbose = false;
enum {
CHN_CNT = 2, /* number of channels */
FRAME_SIZE = sizeof(float),
PERIOD_CSIZE = FRAME_SIZE * PERIOD, /* size of channel packet (bytes) */
PERIOD_FSIZE = CHN_CNT * PERIOD_CSIZE, /* size of period in file (bytes) */
};
static const char *channel_names[] = { "front left", "front right" };
@ -41,22 +46,18 @@ class Track : Thread<8192>
{
private:
typedef Audio_out::Session::Channel::Source Stream;
const char *_file;
Audio_out::Connection *_audio_out[CHN_CNT];
Stream *_stream[CHN_CNT];
public:
Track(const char *file, Allocator_avl *block_alloc[CHN_CNT]) : _file(file)
Track(const char *file) : Thread("track"), _file(file)
{
for (int i = 0; i < CHN_CNT; ++i) {
/* allocation signal for first channel only */
_audio_out[i] = new (env()->heap())
Audio_out::Connection(channel_names[i], block_alloc[i]);
_stream[i] = _audio_out[i]->stream();
if (i > 0)
_audio_out[i]->sync_session(_audio_out[i-1]->session_capability());
Audio_out::Connection(channel_names[i],
i == 0 ? true : false);
}
}
@ -82,8 +83,9 @@ class Track : Thread<8192>
PDBG("%s size is %zu Bytes (attached to %p)",
_file, ds_client.size(), base);
Packet_descriptor p[CHN_CNT];
size_t file_size = ds_client.size();
size_t file_size = ds_client.size();
for (int i = 0; i < CHN_CNT; ++i)
_audio_out[i]->start();
while (1) {
@ -100,46 +102,40 @@ class Track : Thread<8192>
? (file_size - offset) / CHN_CNT / FRAME_SIZE
: PERIOD;
for (int chn = 0; chn < CHN_CNT; ++chn)
while (1)
try {
p[chn] = _stream[chn]->alloc_packet(PERIOD_CSIZE);
break;
} catch (Stream::Packet_alloc_failed) {
/* wait for next finished packet */
_stream[chn]->release_packet(_stream[chn]->get_acked_packet());
}
Packet *p[CHN_CNT];
while (1)
try {
p[0] = _audio_out[0]->stream()->alloc();
break;
} catch (Audio_out::Stream::Alloc_failed) {
_audio_out[0]->wait_for_alloc();
}
unsigned pos = _audio_out[0]->stream()->packet_position(p[0]);
/* sync other channels with first one */
for (int chn = 1; chn < CHN_CNT; ++chn)
p[chn] = _audio_out[chn]->stream()->get(pos);
/* copy channel contents into sessions */
float *content = (float *)(base + offset);
for (unsigned c = 0; c < CHN_CNT * chunk; c += CHN_CNT)
for (int i = 0; i < CHN_CNT; ++i)
_stream[i]->packet_content(p[i])[c / 2] = content[c + i];
p[i]->content()[c / 2] = content[c + i];
/* handle last packet gracefully */
if (chunk < PERIOD) {
for (int i = 0; i < CHN_CNT; ++i)
memset((_stream[i]->packet_content(p[i]) + chunk),
memset(p[i]->content() + chunk,
0, PERIOD_CSIZE - FRAME_SIZE * chunk);
}
if (verbose)
PDBG("%s submit packet %zu", _file, cnt);
PDBG("%s submit packet %zu", _file,
_audio_out[0]->stream()->packet_position((p[0])));
for (int i = 0; i < CHN_CNT; ++i)
_stream[i]->submit_packet(p[i]);
for (int i = 0; i < CHN_CNT; ++i)
while (_stream[i]->ack_avail() ||
!_stream[i]->ready_to_submit()) {
_stream[i]->release_packet(_stream[i]->get_acked_packet());
}
for (int i = 0; i < CHN_CNT; i++)
_audio_out[i]->submit(p[i]);
}
/* ack remaining packets */
for (int i = 0; i < CHN_CNT; ++i)
while (_stream[i]->ack_avail())
_stream[i]->release_packet(_stream[i]->get_acked_packet());
}
}
@ -189,7 +185,7 @@ static int process_config(const char ***files)
int main(int argc, char **argv)
{
PDBG("--- Audio-out test ---\n");
PDBG("--- Audio_out test ---\n");
const char *defaults[] = { "1.raw", "2.raw" };
const char **files = defaults;
@ -203,11 +199,9 @@ int main(int argc, char **argv)
}
Track *track[cnt];
Allocator_avl *block_alloc[cnt][CHN_CNT];
for (int i = 0; i < cnt; ++i) {
for (int j = 0; j < CHN_CNT; ++j)
block_alloc[i][j] = new (env()->heap()) Allocator_avl(env()->heap());
track[i] = new (env()->heap()) Track(files[i], block_alloc[i]);
track[i] = new (env()->heap()) Track(files[i]);
}
/* start playback after constrution of all tracks */
@ -217,3 +211,5 @@ int main(int argc, char **argv)
sleep_forever();
return 0;
}