YUY2转RGB 的各种版本

//YUY2视频转化RGB格式 by hardy 2007-10-17 //http://www.fourcc.org/fccyvrgb.php inline void YUY2_RGB(BYTE *YUY2buff,BYTE *RGBbuff,DWORD dwSize) { //B = 1.164(Y - 16) + 2.018(U - 128) //G = 1.164(Y - 16) - 0.813(V - 128) - 0.391(U - 128) //R = 1.164(Y - 16) + 1.596(V - 128) BYTE *orgRGBbuff = RGBbuff; for(DWORD count=0;count<dwSize;count+=4) { //Y0 U0 Y1 V0 float Y0 = *YUY2buff; float U = *(++YUY2buff); float Y1 = *(++YUY2buff); float V = *(++YUY2buff); ++YUY2buff; *(RGBbuff) = (BYTE)(Y0 + (1.370705 * (V-128))); *(++RGBbuff) = (BYTE)(Y0 - (0.698001 * (V-128)) - (0.337633 * (U-128))); *(++RGBbuff) = (BYTE)(Y0 + (1.732446 * (U-128))); *(++RGBbuff) = (BYTE)(Y1 + (1.370705 * (V-128))); *(++RGBbuff) = (BYTE)(Y1 - (0.698001 * (V-128)) - (0.337633 * (U-128))); *(++RGBbuff) = (BYTE)(Y1 + (1.732446 * (U-128))); ++RGBbuff; } } inline void YUY2_RGB2(BYTE *YUY2buff,BYTE *RGBbuff,DWORD dwSize) { //R = Y + 1.14V //G = Y - 0.39U - 0.58V //B = Y + 2.03U // R = Y + 1.403V' //G = Y - 0.344U' - 0.714V' //B = Y + 1.770U' BYTE *orgRGBbuff = RGBbuff; for(DWORD count=0;count<dwSize;count+=4) { //Y0 U0 Y1 V0 float Y0 = *YUY2buff; float U = *(++YUY2buff); float Y1 = *(++YUY2buff); float V = *(++YUY2buff); ++YUY2buff; float R,G,B; R = (Y0 + 1.14f*V); G=(Y0 - 0.39f*U-0.58f*V); B=(Y0 +2.03f*U); if(R<0) R =0; if(R>255) R=255; if(G<0) G =0; if(G>255) G=255; if(B<0) B =0; if(B>255) B=255; *(RGBbuff) = (BYTE)B; *(++RGBbuff) = (BYTE)G; *(++RGBbuff) = (BYTE)R; R = (Y1 + 1.14f*V); G=(Y1 - 0.39f*U-0.58f*V); B=(Y1 +2.03f*U) ; if(R<0) R =0; if(R>255) R=255; if(G<0) G =0; if(G>255) G=255; if(B<0) B =0; if(B>255) B=255; *(++RGBbuff) = (BYTE)B; *(++RGBbuff) = (BYTE)G; *(++RGBbuff) = (BYTE)R; ++RGBbuff; } } inline void YUY2_RGB4(BYTE *YUY2buff,BYTE *RGBbuff,DWORD dwSize) { // R = Y + 1.403V' //G = Y - 0.344U' - 0.714V' //B = Y + 1.770U' BYTE *orgRGBbuff = RGBbuff; for(DWORD count=0;count<dwSize;count+=4) { //Y0 U0 Y1 V0 float Y0 = *YUY2buff; float U = *(++YUY2buff); float Y1 = *(++YUY2buff); float V = *(++YUY2buff); ++YUY2buff; float R,G,B; R = (Y0 + 1.403f*V); G=(Y0 - 0.344f*U-0.714f*V); B=(Y0 +1.77f*U); if(R<0) R =0; if(R>255) R=255; if(G<0) G =0; if(G>255) G=255; if(B<0) B =0; if(B>255) B=255; *(RGBbuff) = (BYTE)R; *(++RGBbuff) = (BYTE)G; *(++RGBbuff) = (BYTE)B; R = (Y1 + 1.403f*V); G=(Y1 - 0.344f*U-0.714f*V); B=(Y1 +1.77f*U); if(R<0) R =0; if(R>255) R=255; if(G<0) G =0; if(G>255) G=255; if(B<0) B =0; if(B>255) B=255; *(++RGBbuff) = (BYTE)R; *(++RGBbuff) = (BYTE)G; *(++RGBbuff) = (BYTE)B; ++RGBbuff; } } inline void YUY2_RGB3(BYTE *YUY2buff,BYTE *RGBbuff,DWORD dwSize) { //B = 1.164(Y - 16) + 2.018(U - 128) //G = 1.164(Y - 16) - 0.813(V - 128) - 0.391(U - 128) //R = 1.164(Y - 16) + 1.596(V - 128) BYTE *orgRGBbuff = RGBbuff; for(DWORD count=0;count<dwSize;count+=4) { //Y0 U0 Y1 V0 float Y0 = *YUY2buff; float U = *(++YUY2buff); float Y1 = *(++YUY2buff); float V = *(++YUY2buff); ++YUY2buff; *(RGBbuff) = (BYTE)(1.164f*(Y0 - 16)+ 2.018f*(U - 128)); *(++RGBbuff) = (BYTE)(1.164f*(Y0 - 16) - 0.813f*(V - 128) - 0.391f*(U - 128)); *(++RGBbuff) = (BYTE)(1.164f*(Y0 - 16) + 1.596f*(V - 128)); *(++RGBbuff) = (BYTE)(1.164f*(Y0 - 16)+ 2.018f*(U - 128)); *(++RGBbuff) = (BYTE)(1.164f*(Y0 - 16) - 0.813f*(V - 128) - 0.391f*(U - 128)); *(++RGBbuff) = (BYTE)(1.164f*(Y0 - 16) + 1.596f*(V - 128)); ++RGBbuff; } } // http://msdn2.microsoft.com/en-us/library/ms893078.aspx void VC4000Graber::YUY2_RGB(BYTE *YUY2buff,BYTE *RGBbuff,DWORD dwSize) { // //C = Y - 16 //D = U - 128 //E = V - 128 //R = clip(( 298 * C + 409 * E + 128) >> 8) //G = clip(( 298 * C - 100 * D - 208 * E + 128) >> 8) //B = clip(( 298 * C + 516 * D + 128) >> 8) BYTE *orgRGBbuff = RGBbuff; for(DWORD count=0;count<dwSize;count+=4) { //Y0 U0 Y1 V0 BYTE Y0 = *YUY2buff; BYTE U = *(++YUY2buff); BYTE Y1 = *(++YUY2buff); BYTE V = *(++YUY2buff); ++YUY2buff; LONG Y,C,D,E; BYTE R,G,B; Y = Y0; C = Y-16; D = U-128; E = V-128; R = clip255(( 298 * C + 409 * E + 128) >> 8); G = clip255(( 298 * C - 100 * D - 208 * E + 128) >> 8); B = clip255(( 298 * C + 516 * D + 128) >> 8); *(RGBbuff) = B; *(++RGBbuff) = G; *(++RGBbuff) = R; Y = Y1; C = Y-16; D = U-128; E = V-128; R = clip255(( 298 * C + 409 * E + 128) >> 8); G = clip255(( 298 * C - 100 * D - 208 * E + 128) >> 8); B = clip255(( 298 * C + 516 * D + 128) >> 8); *(++RGBbuff) = B; *(++RGBbuff) = G; *(++RGBbuff) = R; ++RGBbuff; } } BYTE VC4000Graber::clip255(LONG v) { if(v<0) v=0; else if(v>255) v=255; return (BYTE)v; }

转自：http://blog.csdn.net/hardVB/archive/2007/10/18/1831810.aspx