Symbol: v4l2_event_subscription
sys/sys/videoio.h
3387
#define VIDIOC_SUBSCRIBE_EVENT _IOW('V', 90, struct v4l2_event_subscription)
sys/sys/videoio.h
3388
#define VIDIOC_UNSUBSCRIBE_EVENT _IOW('V', 91, struct v4l2_event_subscription)