C++ (Cpp) xcrush_context_reset Examples

Example #1

File: bulk.c Project: davidleake/FreeRDP

void bulk_reset(rdpBulk* bulk)
{
    mppc_context_reset(bulk->mppcSend, FALSE);
    mppc_context_reset(bulk->mppcRecv, FALSE);
    ncrush_context_reset(bulk->ncrushRecv, FALSE);
    ncrush_context_reset(bulk->ncrushSend, FALSE);
    xcrush_context_reset(bulk->xcrushRecv, FALSE);
    xcrush_context_reset(bulk->xcrushSend, FALSE);
}

Example #2

File: xcrush.c Project: BrianChangchien/FiWoRDC

XCRUSH_CONTEXT* xcrush_context_new(BOOL Compressor)
{
	XCRUSH_CONTEXT* xcrush;

	xcrush = (XCRUSH_CONTEXT*) calloc(1, sizeof(XCRUSH_CONTEXT));

	if (xcrush)
	{
		xcrush->Compressor = Compressor;
		xcrush->mppc = mppc_context_new(1, Compressor);

		xcrush->HistoryOffset = 0;
		xcrush->HistoryBufferSize = 2000000;

		xcrush_context_reset(xcrush, FALSE);
	}

	return xcrush;
}

Example #3

File: xcrush.c Project: BrianChangchien/FiWoRDC

int xcrush_decompress(XCRUSH_CONTEXT* xcrush, BYTE* pSrcData, UINT32 SrcSize, BYTE** ppDstData, UINT32* pDstSize, UINT32 flags)
{
	int status = 0;
	UINT32 DstSize = 0;
	BYTE* pDstData = NULL;
	BYTE Level1ComprFlags;
	BYTE Level2ComprFlags;

	if (SrcSize < 2)
		return -1;

	Level1ComprFlags = pSrcData[0];
	Level2ComprFlags = pSrcData[1];

	pSrcData += 2;
	SrcSize -= 2;

	if (!(Level2ComprFlags & PACKET_COMPRESSED))
	{
		pDstData = pSrcData;
		DstSize = SrcSize;

		status = xcrush_decompress_l1(xcrush, pDstData, DstSize, ppDstData, pDstSize, Level1ComprFlags);

		return status;
	}

	if (Level2ComprFlags & PACKET_FLUSHED)
	{
		xcrush_context_reset(xcrush, FALSE);
	}

	status = mppc_decompress(xcrush->mppc, pSrcData, SrcSize, &pDstData, &DstSize, Level2ComprFlags);

	if (status < 0)
		return status;

	status = xcrush_decompress_l1(xcrush, pDstData, DstSize, ppDstData, pDstSize, Level1ComprFlags);

	return status;
}

Example #4

File: xcrush.c Project: BrianChangchien/FiWoRDC

int xcrush_compress(XCRUSH_CONTEXT* xcrush, BYTE* pSrcData, UINT32 SrcSize, BYTE** ppDstData, UINT32* pDstSize, UINT32* pFlags)
{
	int status = 0;
	UINT32 DstSize = 0;
	BYTE* pDstData = NULL;
	BYTE* CompressedData = NULL;
	UINT32 CompressedDataSize = 0;
	BYTE* OriginalData = NULL;
	UINT32 OriginalDataSize = 0;
	UINT32 Level1ComprFlags = 0;
	UINT32 Level2ComprFlags = 0;
	UINT32 CompressionLevel = 3;

	if (SrcSize > 16384)
		return -1001;

	if ((SrcSize + 2) > *pDstSize)
		return -1002;

	OriginalData = *ppDstData;
	OriginalDataSize = SrcSize;

	pDstData = xcrush->BlockBuffer;
	CompressedDataSize = SrcSize;

	status = xcrush_compress_l1(xcrush, pSrcData, SrcSize, &pDstData, &CompressedDataSize, &Level1ComprFlags);

	if (status < 0)
		return status;

	if (Level1ComprFlags & L1_COMPRESSED)
	{
		CompressedData = pDstData;

		if (CompressedDataSize > SrcSize)
			return -1003;
	}
	else
	{
		CompressedData = pSrcData;

		if (CompressedDataSize != SrcSize)
			return -1004;
	}

	status = 0;

	pDstData = &OriginalData[2];
	DstSize = OriginalDataSize - 2;

	if (CompressedDataSize > 50)
	{
		status = mppc_compress(xcrush->mppc, CompressedData, CompressedDataSize, &pDstData, &DstSize, &Level2ComprFlags);
	}

	if (status < 0)
		return status;

	if (!status || (Level2ComprFlags & PACKET_FLUSHED))
	{
		if (CompressedDataSize > DstSize)
		{
			xcrush_context_reset(xcrush, TRUE);
			*ppDstData = pSrcData;
			*pDstSize = SrcSize;
			*pFlags = 0;
			return 1;
		}

		DstSize = CompressedDataSize;
		CopyMemory(&OriginalData[2], CompressedData, CompressedDataSize);
	}

	if (Level2ComprFlags & PACKET_COMPRESSED)
	{
		Level2ComprFlags |= xcrush->CompressionFlags;
		xcrush->CompressionFlags = 0;
	}
	else if (Level2ComprFlags & PACKET_FLUSHED)
	{
		xcrush->CompressionFlags = PACKET_FLUSHED;
	}

	Level1ComprFlags |= L1_INNER_COMPRESSION;

	OriginalData[0] = (BYTE) Level1ComprFlags;
	OriginalData[1] = (BYTE) Level2ComprFlags;

#if 0
	WLog_DBG(TAG, "XCrushCompress: Level1ComprFlags: %s Level2ComprFlags: %s",
			xcrush_get_level_1_compression_flags_string(Level1ComprFlags),
			xcrush_get_level_2_compression_flags_string(Level2ComprFlags));
#endif

	if (*pDstSize < (DstSize + 2))
		return -1006;

	*pDstSize = DstSize + 2;
	*pFlags = PACKET_COMPRESSED | CompressionLevel;

	return 1;
}