clamp_u8
*dst++ = clamp_u8(y[j] + (int)(1.772f * cb));
*dst++ = clamp_u8(y + (int)(1.402f * cr));
*dst++ = clamp_u8(y - (int)(0.34414f * cb) - (int)(0.71414f * cr));
*dst++ = clamp_u8(y + (int)(1.772f * cb));
dst[0] = clamp_u8(y0 + (int)(1.402f * cr));
dst[1] = clamp_u8(y0 - (int)(0.34414f * cb) - (int)(0.71414f * cr));
dst[2] = clamp_u8(y0 + (int)(1.772f * cb));
dst[3] = clamp_u8(y1 + (int)(1.402f * cr));
dst[4] = clamp_u8(y1 - (int)(0.34414f * cb) - (int)(0.71414f * cr));
dst[5] = clamp_u8(y1 + (int)(1.772f * cb));
*dst++ = clamp_u8(y[j] + (int)(1.402f * cr));
*dst++ = clamp_u8(y[j] - (int)(0.34414f * cb) - (int)(0.71414f * cr));