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/* Lzma86Dec.c -- LZMA + x86 (BCJ) Filter Decoder↩
2016-05-16 : Igor Pavlov : Public domain */↩
↩
#include "Precomp.h"↩
↩
#include "Lzma86.h"↩
↩
#include "Alloc.h"↩
#include "Bra.h"↩
#include "LzmaDec.h"↩
↩
SRes Lzma86_GetUnpackSize(const Byte *src, SizeT srcLen, UInt64 *unpackSize)↩
{↩
unsigned i;↩
if (srcLen < LZMA86_HEADER_SIZE)↩
return SZ_ERROR_INPUT_EOF;↩
*unpackSize = 0;↩
for (i = 0; i < sizeof(UInt64); i++)↩
*unpackSize += ((UInt64)src[LZMA86_SIZE_OFFSET + i]) << (8 * i);↩
return SZ_OK;↩
}↩
↩
SRes Lzma86_Decode(Byte *dest, SizeT *destLen, const Byte *src, SizeT *srcLen)↩
{↩
SRes res;↩
int useFilter;↩
SizeT inSizePure;↩
ELzmaStatus status;↩
↩
if (*srcLen < LZMA86_HEADER_SIZE)↩
return SZ_ERROR_INPUT_EOF;↩
↩
useFilter = src[0];↩
↩
if (useFilter > 1)↩
{↩
*destLen = 0;↩
return SZ_ERROR_UNSUPPORTED;↩
}↩
↩
inSizePure = *srcLen - LZMA86_HEADER_SIZE;↩
res = LzmaDecode(dest, destLen, src + LZMA86_HEADER_SIZE, &inSizePure,↩
src + 1, LZMA_PROPS_SIZE, LZMA_FINISH_ANY, &status, &g_Alloc);↩
*srcLen = inSizePure + LZMA86_HEADER_SIZE;↩
if (res != SZ_OK)↩
return res;↩
if (useFilter == 1)↩
{↩
UInt32 x86State;↩
x86_Convert_Init(x86State);↩
x86_Convert(dest, *destLen, 0, &x86State, 0);↩
}↩
return SZ_OK;↩
}↩