case BC_YUV422: in_w &= ~1; break; // 2x1
case BC_YUV420P: in_w &= ~1; in_h &= ~1; break; // 2x2
case BC_YUV422P: in_w &= ~1; break; // 2x1
case BC_YUV422: in_w &= ~1; break; // 2x1
case BC_YUV420P: in_w &= ~1; in_h &= ~1; break; // 2x2
case BC_YUV422P: in_w &= ~1; break; // 2x1