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9bb3d6b972
git-subtree-dir: sgx-jvm/avian git-subtree-mainline:f978eab8d1git-subtree-split:09e4fe60d0
80 lines
1.8 KiB
C++
80 lines
1.8 KiB
C++
/* Copyright (c) 2008-2015, Avian Contributors
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Permission to use, copy, modify, and/or distribute this software
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for any purpose with or without fee is hereby granted, provided
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that the above copyright notice and this permission notice appear
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in all copies.
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There is NO WARRANTY for this software. See license.txt for
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details. */
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#include "avian/lzma-util.h"
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#include "C/LzmaEnc.h"
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using namespace vm;
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namespace {
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SRes myProgress(void*, UInt64, UInt64)
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{
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return SZ_OK;
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}
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} // namespace
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namespace vm {
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uint8_t* encodeLZMA(System* s,
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avian::util::Alloc* a,
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uint8_t* in,
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size_t inSize,
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size_t* outSize)
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{
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const unsigned PropHeaderSize = 5;
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const unsigned HeaderSize = 13;
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unsigned bufferSize = inSize * 2;
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uint8_t* buffer = static_cast<uint8_t*>(a->allocate(bufferSize));
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LzmaAllocator allocator(a);
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CLzmaEncProps props;
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LzmaEncProps_Init(&props);
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props.level = 9;
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props.writeEndMark = 1;
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ICompressProgress progress = {myProgress};
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SizeT propsSize = PropHeaderSize;
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int32_t inSize32 = inSize;
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memcpy(buffer + PropHeaderSize, &inSize32, 4);
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SizeT outSizeT = bufferSize;
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int result = LzmaEncode(buffer + HeaderSize,
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&outSizeT,
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in,
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inSize,
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&props,
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buffer,
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&propsSize,
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1,
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&progress,
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&(allocator.allocator),
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&(allocator.allocator));
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expect(s, result == SZ_OK);
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*outSize = outSizeT + HeaderSize;
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uint8_t* out = static_cast<uint8_t*>(a->allocate(*outSize));
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memcpy(out, buffer, *outSize);
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a->free(buffer, bufferSize);
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return out;
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}
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} // namespace vm
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