mirror of
https://port.numenaute.org/aleajactaest/khanat-code-old.git
synced 2024-09-23 21:20:32 +00:00
79 lines
2 KiB
C++
79 lines
2 KiB
C++
/* LzmaRamDecode.c */
|
|
|
|
#include "LzmaRamDecode.h"
|
|
#ifdef _SZ_ONE_DIRECTORY
|
|
#include "LzmaDecode.h"
|
|
#include "BranchX86.h"
|
|
#else
|
|
#include "../LZMA_C/LzmaDecode.h"
|
|
#include "../Branch/BranchX86.h"
|
|
#endif
|
|
|
|
#define LZMA_PROPS_SIZE 14
|
|
#define LZMA_SIZE_OFFSET 6
|
|
|
|
int LzmaRamGetUncompressedSize(
|
|
const unsigned char *inBuffer,
|
|
size_t inSize,
|
|
size_t *outSize)
|
|
{
|
|
unsigned int i;
|
|
if (inSize < LZMA_PROPS_SIZE)
|
|
return 1;
|
|
*outSize = 0;
|
|
for(i = 0; i < sizeof(size_t); i++)
|
|
*outSize += ((size_t)inBuffer[LZMA_SIZE_OFFSET + i]) << (8 * i);
|
|
for(; i < 8; i++)
|
|
if (inBuffer[LZMA_SIZE_OFFSET + i] != 0)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
#define SZE_DATA_ERROR (1)
|
|
#define SZE_OUTOFMEMORY (2)
|
|
|
|
int LzmaRamDecompress(
|
|
const unsigned char *inBuffer,
|
|
size_t inSize,
|
|
unsigned char *outBuffer,
|
|
size_t outSize,
|
|
size_t *outSizeProcessed,
|
|
void * (*allocFunc)(size_t size),
|
|
void (*freeFunc)(void *))
|
|
{
|
|
CLzmaDecoderState state; /* it's about 24 bytes structure, if int is 32-bit */
|
|
int result;
|
|
SizeT outSizeProcessedLoc;
|
|
SizeT inProcessed;
|
|
int useFilter;
|
|
|
|
if (inSize < LZMA_PROPS_SIZE)
|
|
return 1;
|
|
useFilter = inBuffer[0];
|
|
|
|
*outSizeProcessed = 0;
|
|
if (useFilter > 1)
|
|
return 1;
|
|
|
|
if (LzmaDecodeProperties(&state.Properties, inBuffer + 1, LZMA_PROPERTIES_SIZE) != LZMA_RESULT_OK)
|
|
return 1;
|
|
state.Probs = (CProb *)allocFunc(LzmaGetNumProbs(&state.Properties) * sizeof(CProb));
|
|
if (state.Probs == 0)
|
|
return SZE_OUTOFMEMORY;
|
|
|
|
result = LzmaDecode(&state,
|
|
inBuffer + LZMA_PROPS_SIZE, (SizeT)inSize - LZMA_PROPS_SIZE, &inProcessed,
|
|
outBuffer, (SizeT)outSize, &outSizeProcessedLoc);
|
|
freeFunc(state.Probs);
|
|
if (result != LZMA_RESULT_OK)
|
|
return 1;
|
|
*outSizeProcessed = (size_t)outSizeProcessedLoc;
|
|
if (useFilter == 1)
|
|
{
|
|
UInt32 _prevMask;
|
|
UInt32 _prevPos;
|
|
x86_Convert_Init(_prevMask, _prevPos);
|
|
x86_Convert(outBuffer, (UInt32)outSizeProcessedLoc, 0, &_prevMask, &_prevPos, 0);
|
|
}
|
|
return 0;
|
|
}
|