#define CLAMP(t) ((t>255)?255:((t<0)?0:t))
// RGB to YUV
#define GET_Y(R,G,B) CLAMP((( 66 * (R) + 129 * (G) +  25 * (B) + 128) >> 8) +  16)
#define GET_U(R,G,B) CLAMP(((-38 * (R) -  74 * (G) + 112 * (B) + 128) >> 8) + 128)
#define GET_V(R,G,B) CLAMP(((112 * (R) -  94 * (G) -  18 * (B) + 128) >> 8) + 128)

unsigned int Capture::GrabPlanar(unsigned char **Y, unsigned char **U, unsigned char **V){
    if(*Y != nullptr || *U != nullptr || *V != nullptr){return 0;}
    unsigned char *frame = nullptr;
    unsigned int width, height, plane_size = 0;
    unsigned int size = GrabBitmap(&frame, width, height, 1);
    if( size){ // I420 algorithm...
        plane_size = width * height;
        *Y = (unsigned char *)malloc(plane_size     );
        *U = (unsigned char *)malloc(plane_size >> 2);
        *V = (unsigned char *)malloc(plane_size >> 2);
        unsigned char R, G, B;
        unsigned int iY, iU, iV;
        iY = iU = iV = 0;
        for(unsigned int i; i < size; i+=3){
            R = frame[i  ];
            G = frame[i+1];
            B = frame[i+2];
            (*Y)[iY] = GET_Y(R,G,B);
            // Не знаю что делать с индексами iU и iV
            // там ведь буфер в 4 раза меньше, можно на ошибку сегментации нарваться...
            iY++;
        }
    }
    if( frame != nullptr ){free(frame);}
    return plane_size;
}