void RGBb_to_YUVb(const uint8 *RGB,uint8 *YUV)
{
int R = RGB[0], G = RGB[1], B = RGB[2];
YUV[0] = Y_RGB(R,G,B);
YUV[1] = U_RGB(R,G,B) + 127;
YUV[2] = V_RGB(R,G,B) + 127;
}
void RGBb_to_YUVi(const uint8 *RGB,int *Y,int *U,int *V)
{
int R = RGB[0], G = RGB[1], B = RGB[2];
*Y = Y_RGB(R,G,B);
*U = U_RGB(R,G,B) + 127;
*V = V_RGB(R,G,B) + 127;
assert( isinrange(*Y,0,255) );
assert( isinrange(*U,0,255) );
assert( isinrange(*V,0,255) );
}
void RGBb_to_YUVb_line(const uint8 *RGB,uint8 *YUV,int len)
{
int R,G,B;
while(len--)
{
R = *RGB++;
G = *RGB++;
B = *RGB++;
*YUV++ = Y_RGB(R,G,B);
*YUV++ = U_RGB(R,G,B) + 127;
*YUV++ = V_RGB(R,G,B) + 127;
}
}
void RGBi_to_YUVi(int R,int G,int B,int *Y,int *U,int *V)
{
assert( isinrange(R,0,255) );
assert( isinrange(G,0,255) );
assert( isinrange(B,0,255) );
*Y = Y_RGB(R,G,B);
*U = U_RGB(R,G,B) + 127;
*V = V_RGB(R,G,B) + 127;
assert( isinrange(*Y,0,255) );
assert( isinrange(*U,0,255) );
assert( isinrange(*V,0,255) );
}
// Update the YUV plots
void sample_update_yuv()
{
int i;
int pixel, r, g, b;
rtk_fig_clear(sample->vufig);
rtk_fig_clear(sample->yufig);
rtk_fig_clear(sample->vyfig);
for (i = 0; i < sample->pixel_count; i++)
{
pixel = sample->pixels[i];
if (sample->mmap->depth == 16)
{
r = R_RGB16(pixel);
g = G_RGB16(pixel);
b = B_RGB16(pixel);
}
else if (sample->mmap->depth == 32)
{
r = R_RGB32(pixel);
g = G_RGB32(pixel);
b = B_RGB32(pixel);
}
rtk_fig_color(sample->vufig, r / 256.0, g / 256.0, b / 256.0);
rtk_fig_rectangle(sample->vufig, V_RGB(r, g, b), U_RGB(r, g, b), 0, 2, 2, 1);
rtk_fig_color(sample->yufig, r / 256.0, g / 256.0, b / 256.0);
rtk_fig_rectangle(sample->yufig, Y_RGB(r, g, b), U_RGB(r, g, b), 0, 2, 2, 1);
rtk_fig_color(sample->vyfig, r / 256.0, g / 256.0, b / 256.0);
rtk_fig_rectangle(sample->vyfig, V_RGB(r, g, b), Y_RGB(r, g, b), 0, 2, 2, 1);
}
}