/*
* LzmaUncompress
* --------------
* In:
* dest - output data
* destLen - output data size
* src - input data
* srcLen - input data size
* Out:
* destLen - processed output size
* srcLen - processed input size
* Returns:
* SZ_OK - OK
* SZ_ERROR_DATA - Data error
* SZ_ERROR_MEM - Memory allocation arror
* SZ_ERROR_UNSUPPORTED - Unsupported properties
* SZ_ERROR_INPUT_EOF - it needs more bytes in input buffer (src)
*/
public static SRes LzmaUncompress(
P <byte> dest, ref long destLen,
P <byte> src, ref long srcLen,
P <byte> props, long propsSize)
{
ELzmaStatus status;
return(CLzmaDec.LzmaDecode(dest, ref destLen, src, ref srcLen, props, (uint)propsSize, ELzmaFinishMode.LZMA_FINISH_ANY, out status, ISzAlloc.SmallAlloc));
}
private static void LzmaDec_UpdateWithUncompressed(CLzmaDec p, P <byte> src, long size)
{
CUtils.memcpy(p.mDic + p.mDicPos, src, size);
p.mDicPos += size;
if (p.mCheckDicSize == 0 && p.mProp.mDicSize - p.mProcessedPos <= size)
{
p.mCheckDicSize = p.mProp.mDicSize;
}
p.mProcessedPos += (uint)size;
}
private static void LzmaDec_UpdateWithUncompressed(CLzmaDec p, P<byte> src, long size)
{
CUtils.memcpy(p.mDic + p.mDicPos, src, size);
p.mDicPos += size;
if (p.mCheckDicSize == 0 && p.mProp.mDicSize - p.mProcessedPos <= size)
p.mCheckDicSize = p.mProp.mDicSize;
p.mProcessedPos += (uint)size;
}
/* ---------- One Call Interface ---------- */
/* LzmaDecode
finishMode:
It has meaning only if the decoding reaches output limit (*destLen).
LZMA_FINISH_ANY - Decode just destLen bytes.
LZMA_FINISH_END - Stream must be finished after (*destLen).
Returns:
SZ_OK
status:
LZMA_STATUS_FINISHED_WITH_MARK
LZMA_STATUS_NOT_FINISHED
LZMA_STATUS_MAYBE_FINISHED_WITHOUT_MARK
SZ_ERROR_DATA - Data error
SZ_ERROR_MEM - Memory allocation error
SZ_ERROR_UNSUPPORTED - Unsupported properties
SZ_ERROR_INPUT_EOF - It needs more bytes in input buffer (src).
*/
public static SRes LzmaDecode(P<byte> dest, ref long destLen, P<byte> src, ref long srcLen, P<byte> propData, uint propSize, ELzmaFinishMode finishMode, out ELzmaStatus status, ISzAlloc alloc)
{
long outSize = destLen;
long inSize = srcLen;
destLen = 0;
srcLen = 0;
status = ELzmaStatus.LZMA_STATUS_NOT_SPECIFIED;
if (inSize < RC_INIT_SIZE)
return SZ_ERROR_INPUT_EOF;
CLzmaDec decoder = new CLzmaDec();
decoder.LzmaDec_Construct();
SRes res;
if ((res = decoder.LzmaDec_AllocateProbs(propData, propSize, alloc)) != SZ_OK)
return res;
decoder.mDic = dest;
decoder.mDicBufSize = outSize;
decoder.LzmaDec_Init();
srcLen = inSize;
res = decoder.LzmaDec_DecodeToDic(outSize, src, ref srcLen, finishMode, out status);
destLen = decoder.mDicPos;
if (res == SZ_OK && status == ELzmaStatus.LZMA_STATUS_NEEDS_MORE_INPUT)
res = SZ_ERROR_INPUT_EOF;
decoder.LzmaDec_FreeProbs(alloc);
return res;
}
