RGB2YUV.rar_RGB24_rgb2yuv

void Rgb2Yuv(unsigned srcWidth,unsigned srcHeight,const BYTE* rgb,BYTE* yuv); #define rgbtoy(b, g, r, y) y=(BYTE)(((int)30*r +(int)59*g +(int)11*b)/100) #define rgbtoyuv(b, g, r, y, u, v) \ rgbtoy(b, g, r, y); \ u=(BYTE)(((int)-17*r -(int)33*g +(int)50*b+12800)/100); \ v=(BYTE)(((int)50*r -(int)42*g -(int)8*b+12800)/100) void Rgb2Yuv ( unsigned srcWidth,unsigned srcHeight,const BYTE * rgb,BYTE * yuv ) { const unsigned planeSize = srcWidth*srcHeight; const unsigned halfWidth = srcWidth >> 1; BYTE * yplane = yuv; BYTE * uplane = yuv + planeSize; BYTE * vplane = yuv + planeSize + (planeSize >> 2); const BYTE * rgbIndex = rgb; for (unsigned y = 0; y < srcHeight; y++) { BYTE * yline = yplane + (y * srcWidth); BYTE * uline = uplane + ((y >> 1) * halfWidth); BYTE * vline = vplane + ((y >> 1) * halfWidth); rgbIndex = rgb + (srcWidth*(srcHeight-1-y)*3); for (unsigned x = 0; x < srcWidth; x+=2) { rgbtoy(rgbIndex[0], rgbIndex[1], rgbIndex[2],*yline); rgbIndex += 3; yline++; rgbtoyuv(rgbIndex[0], rgbIndex[1], rgbIndex[2],*yline, *uline, *vline); rgbIndex += 3; yline++; uline++; vline++; } } }