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