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libfreerdp-codec: add support for 16 color palette image copy

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This commit is contained in:
Marc-André Moreau 2015-03-16 14:01:43 -04:00
parent 9562439bd8
commit 0e94ac663d
1 changed files with 68 additions and 0 deletions
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68
libfreerdp/codec/color.c
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@ -1720,6 +1720,74 @@ int freerdp_image1_copy(BYTE* pDstData, DWORD DstFormat, int nDstStep, int nXDst
int freerdp_image4_copy(BYTE* pDstData, DWORD DstFormat, int nDstStep, int nXDst, int nYDst,
int nWidth, int nHeight, BYTE* pSrcData, DWORD SrcFormat, int nSrcStep, int nXSrc, int nYSrc, BYTE* palette)
{
int x, y;
int nSrcPad;
int nDstPad;
int nAlignedWidth;
int dstBitsPerPixel;
int dstBytesPerPixel;
BOOL vFlip = FALSE;
BOOL invert = FALSE;
dstBitsPerPixel = FREERDP_PIXEL_FORMAT_DEPTH(DstFormat);
dstBytesPerPixel = (FREERDP_PIXEL_FORMAT_BPP(DstFormat) / 8);
nAlignedWidth = nWidth + (nWidth % 2);
if (nSrcStep < 0)
nSrcStep = nAlignedWidth / 2;
if (nDstStep < 0)
nDstStep = dstBytesPerPixel * nWidth;
nSrcPad = (nSrcStep - (nAlignedWidth / 2));
nDstPad = (nDstStep - (nWidth * dstBytesPerPixel));
if (FREERDP_PIXEL_FORMAT_IS_ABGR(DstFormat))
invert = TRUE;
if (FREERDP_PIXEL_FORMAT_FLIP(DstFormat) == FREERDP_PIXEL_FLIP_VERTICAL)
vFlip = TRUE;
if (dstBytesPerPixel == 4)
{
BYTE* pSrcPixel;
UINT32* pDstPixel;
UINT32* values = (UINT32*) palette;
if (!invert)
{
if (!vFlip)
{
pSrcPixel = &pSrcData[nYSrc * nSrcStep];
pDstPixel = (UINT32*) &pDstData[(nYDst * nDstStep) + (nXDst * 4)];
for (y = 0; y < nHeight; y++)
{
for (x = 0; x < nWidth / 2; x++)
{
pDstPixel[0] = values[*pSrcPixel >> 4];
pDstPixel[1] = values[*pSrcPixel & 0xF];
pDstPixel += 2;
pSrcPixel++;
}
if (nWidth % 2)
{
pDstPixel[0] = values[*pSrcPixel >> 4];
pDstPixel++;
pSrcPixel++;
}
pSrcPixel += nSrcPad;
pDstPixel = (UINT32*) &((BYTE*) pDstPixel)[nDstPad];
}
}
}
return 1;
}
return 1;
}