void TransformImage_YUY2(
BYTE* pDest,
LONG lDestStride,
const BYTE* pSrc,
LONG lSrcStride,
DWORD dwWidthInPixels,
DWORD dwHeightInPixels
)
{
for (DWORD y = 0; y < dwHeightInPixels; y++)
{
RGBQUAD *pDestPel = (RGBQUAD*)pDest;
WORD *pSrcPel = (WORD*)pSrc;
for (DWORD x = 0; x < dwWidthInPixels; x += 2)
{
// Byte order is U0 Y0 V0 Y1
int y0 = (int)LOBYTE(pSrcPel[x]);
int u0 = (int)HIBYTE(pSrcPel[x]);
int y1 = (int)LOBYTE(pSrcPel[x + 1]);
int v0 = (int)HIBYTE(pSrcPel[x + 1]);
pDestPel[x] = ConvertYCrCbToRGB(y0, v0, u0);
pDestPel[x + 1] = ConvertYCrCbToRGB(y1, v0, u0);
}
pSrc += lSrcStride;
pDest += lDestStride;
}
}
_declspec(dllexport) void FromYUY2ToRGB32(LPVOID lpDest, LPVOID lpSource, LONG lWidth, LONG lHeight)
{
RGBQUAD *pDestPel = (RGBQUAD*)lpDest;
WORD *pSrcPel = (WORD*)lpSource;
for (int y = 0; y < lHeight; y++)
{
for (int x = 0; x < lWidth; x += 2)
{
//
// Byte order is U0 Y0 V0 Y1
//
int y0 = (int)LOBYTE(pSrcPel[x]);
int u0 = (int)HIBYTE(pSrcPel[x]);
int y1 = (int)LOBYTE(pSrcPel[x + 1]);
int v0 = (int)HIBYTE(pSrcPel[x + 1]);
pDestPel[x] = ConvertYCrCbToRGB(y0, v0, u0);
pDestPel[x + 1] = ConvertYCrCbToRGB(y1, v0, u0);
}
pSrcPel += lWidth;
pDestPel += lWidth;
}
}
void TransformImage_NV12(
BYTE* pDst,
LONG dstStride,
const BYTE* pSrc,
LONG srcStride,
DWORD dwWidthInPixels,
DWORD dwHeightInPixels
)
{
const BYTE* lpBitsY = pSrc;
const BYTE* lpBitsCb = lpBitsY + (dwHeightInPixels * srcStride);;
const BYTE* lpBitsCr = lpBitsCb + 1;
for (UINT y = 0; y < dwHeightInPixels; y += 2)
{
const BYTE* lpLineY1 = lpBitsY;
const BYTE* lpLineY2 = lpBitsY + srcStride;
const BYTE* lpLineCr = lpBitsCr;
const BYTE* lpLineCb = lpBitsCb;
LPBYTE lpDibLine1 = pDst;
LPBYTE lpDibLine2 = pDst + dstStride;
for (UINT x = 0; x < dwWidthInPixels; x += 2)
{
int y0 = (int)lpLineY1[0];
int y1 = (int)lpLineY1[1];
int y2 = (int)lpLineY2[0];
int y3 = (int)lpLineY2[1];
int cb = (int)lpLineCb[0];
int cr = (int)lpLineCr[0];
RGBQUAD r = ConvertYCrCbToRGB(y0, cr, cb);
lpDibLine1[0] = r.rgbBlue;
lpDibLine1[1] = r.rgbGreen;
lpDibLine1[2] = r.rgbRed;
lpDibLine1[3] = 0; // Alpha
r = ConvertYCrCbToRGB(y1, cr, cb);
lpDibLine1[4] = r.rgbBlue;
lpDibLine1[5] = r.rgbGreen;
lpDibLine1[6] = r.rgbRed;
lpDibLine1[7] = 0; // Alpha
r = ConvertYCrCbToRGB(y2, cr, cb);
lpDibLine2[0] = r.rgbBlue;
lpDibLine2[1] = r.rgbGreen;
lpDibLine2[2] = r.rgbRed;
lpDibLine2[3] = 0; // Alpha
r = ConvertYCrCbToRGB(y3, cr, cb);
lpDibLine2[4] = r.rgbBlue;
lpDibLine2[5] = r.rgbGreen;
lpDibLine2[6] = r.rgbRed;
lpDibLine2[7] = 0; // Alpha
lpLineY1 += 2;
lpLineY2 += 2;
lpLineCr += 2;
lpLineCb += 2;
lpDibLine1 += 8;
lpDibLine2 += 8;
}
pDst += (2 * dstStride);
lpBitsY += (2 * srcStride);
lpBitsCr += srcStride;
lpBitsCb += srcStride;
}
}
