1 V4L2_CTRL_FLAG_DISABLED 2 V4L2_CTRL_FLAG_GRABBED 3 V4L2_CTRL_FLAG_READ_ONLY 4 V4L2_CTRL_FLAG_UPDATE 5 V4L2_CTRL_FLAG_INACTIVE 6 V4L2_CTRL_FLAG_SLIDER 7 V4L2_CTRL_FLAG_WRITE_ONLY 8 V4L2_CTRL_FLAG_VOLATILE 9
