What this function does?

[Django_Untaken]

Hello Audio/Video Gurus. I don't seem to understand what following does. Here is the function.

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;
}

}

So, whether above function converts YUV to RGB32 or vice versa. Thanks for your input.

[Jochen Arndt]

You may ask the author. But the meaningful function name ConvertYCrCbToRGB should answer your question. This link may be also helpful: http://www.equasys.de/colorconversion.html[^].

[econy]

InvalidateRect(rect,FALSE);
DrawText(hDC,dtcMsgStr,-1,rect,DT_WORDBREAK|DT_LEFT);

I tried the above way, same phenomenon