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#include "cvd/utility.h"
#include "cvd/colourspace.h"
#include "cvd_src/yuv422.h"
namespace CVD {
namespace ColourSpace {
void yuv422_to_rgb_c(const unsigned char* yuv, unsigned char* rgb, unsigned int total)
{
int yy, uu, vv, ug_plus_vg, ub, vr;
int r,g,b;
//rgb += width*(height-1)*3;
total /= 2;
while (total--) {
yy = yuv[0] << 8;
uu = yuv[1] - 128;
vv = yuv[3] - 128;
ug_plus_vg = uu * 88 + vv * 183;
ub = uu * 454;
vr = vv * 359;
r = (yy + vr) >> 8;
g = (yy - ug_plus_vg) >> 8;
b = (yy + ub) >> 8;
rgb[0] = r < 0 ? 0 : (r > 255 ? 255 : (unsigned char)r);
rgb[1] = g < 0 ? 0 : (g > 255 ? 255 : (unsigned char)g);
rgb[2] = b < 0 ? 0 : (b > 255 ? 255 : (unsigned char)b);
yy = yuv[2] << 8;
r = (yy + vr) >> 8;
g = (yy - ug_plus_vg) >> 8;
b = (yy + ub) >> 8;
rgb[3] = r < 0 ? 0 : (r > 255 ? 255 : (unsigned char)r);
rgb[4] = g < 0 ? 0 : (g > 255 ? 255 : (unsigned char)g);
rgb[5] = b < 0 ? 0 : (b > 255 ? 255 : (unsigned char)b);
yuv += 4;
rgb += 6;
}
}
void yuv422_to_grey_c(const unsigned char* yuv, unsigned char* grey, unsigned int total)
{
total/=2;
while (total--) {
grey[0] = yuv[0];
grey[1] = yuv[2];
yuv += 4;
grey += 2;
}
}
void vuy422_to_rgb(const unsigned char* yuv, unsigned char* rgb, unsigned int width, unsigned int height)
{
int yy, uu, vv, ug_plus_vg, ub, vr;
int r,g,b;
unsigned int total = width*height;
total /= 2;
while (total--) {
yy = yuv[1] << 8;
uu = yuv[0] - 128;
vv = yuv[2] - 128;
ug_plus_vg = uu * 88 + vv * 183;
ub = uu * 454;
vr = vv * 359;
r = (yy + vr) >> 8;
g = (yy - ug_plus_vg) >> 8;
b = (yy + ub) >> 8;
rgb[0] = r < 0 ? 0 : (r > 255 ? 255 : (unsigned char)r);
rgb[1] = g < 0 ? 0 : (g > 255 ? 255 : (unsigned char)g);
rgb[2] = b < 0 ? 0 : (b > 255 ? 255 : (unsigned char)b);
yy = yuv[3] << 8;
r = (yy + vr) >> 8;
g = (yy - ug_plus_vg) >> 8;
b = (yy + ub) >> 8;
rgb[3] = r < 0 ? 0 : (r > 255 ? 255 : (unsigned char)r);
rgb[4] = g < 0 ? 0 : (g > 255 ? 255 : (unsigned char)g);
rgb[5] = b < 0 ? 0 : (b > 255 ? 255 : (unsigned char)b);
yuv += 4;
rgb += 6;
}
}
void vuy422_to_grey(const unsigned char* yuv, unsigned char* grey, unsigned int width, unsigned int height)
{
unsigned int total = width*height;
total/=2;
while (total--) {
grey[0] = yuv[1];
grey[1] = yuv[3];
yuv += 4;
grey += 2;
}
}
}
}
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