int LzmaRamDecompress(
unsigned char *inBuffer,
size_t inSize,
unsigned char *outBuffer,
size_t outSize,
size_t *outSizeProcessed,
void * (*allocFunc)(size_t size),
void (*freeFunc)(void *))
{
int lc, lp, pb;
size_t lzmaInternalSize;
void *lzmaInternalData;
int result;
UInt32 outSizeProcessedLoc;
int useFilter = inBuffer[0];
*outSizeProcessed = 0;
if (useFilter > 1)
return 1;
if (inSize < LZMA_PROPS_SIZE)
return 1;
lc = inBuffer[1];
if (lc >= (9 * 5 * 5))
return 1;
for (pb = 0; lc >= (9 * 5); pb++, lc -= (9 * 5));
for (lp = 0; lc >= 9; lp++, lc -= 9);
lzmaInternalSize = (LZMA_BASE_SIZE + (LZMA_LIT_SIZE << (lc + lp))) * sizeof(CProb);
lzmaInternalData = allocFunc(lzmaInternalSize);
if (lzmaInternalData == 0)
return SZE_OUTOFMEMORY;
result = LzmaDecode((unsigned char *)lzmaInternalData, (UInt32)lzmaInternalSize,
lc, lp, pb,
inBuffer + LZMA_PROPS_SIZE, (UInt32)inSize - LZMA_PROPS_SIZE,
outBuffer, (UInt32)outSize,
&outSizeProcessedLoc);
freeFunc(lzmaInternalData);
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;
}
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;
}
extern "C" VoidPtr FB_DLL_EXPORT ib_util_malloc(long size)
{
return allocFunc ? allocFunc(size) : malloc(size);
}
int SzByteBufferCreate(CSzByteBuffer *buffer, size_t newCapacity, void * (*allocFunc)(size_t size))
{
buffer->Capacity = newCapacity;
buffer->Items = (Byte *)allocFunc(newCapacity);
return (buffer->Items != 0);
}
