diff options
Diffstat (limited to 'include/media/v4l2-event.h')
| -rw-r--r-- | include/media/v4l2-event.h | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/include/media/v4l2-event.h b/include/media/v4l2-event.h index eda17f8d78bc..8d681e5ca552 100644 --- a/include/media/v4l2-event.h +++ b/include/media/v4l2-event.h @@ -30,10 +30,15 @@ #include <linux/wait.h> struct v4l2_fh; +struct v4l2_subscribed_event; struct video_device; struct v4l2_kevent { + /* list node for the v4l2_fh->available list */ struct list_head list; + /* pointer to parent v4l2_subscribed_event */ + struct v4l2_subscribed_event *sev; + /* event itself */ struct v4l2_event event; }; @@ -50,18 +55,25 @@ struct v4l2_subscribed_event { struct v4l2_fh *fh; /* list node that hooks into the object's event list (if there is one) */ struct list_head node; + /* the number of elements in the events array */ + unsigned elems; + /* the index of the events containing the oldest available event */ + unsigned first; + /* the number of queued events */ + unsigned in_use; + /* an array of elems events */ + struct v4l2_kevent events[]; }; -int v4l2_event_alloc(struct v4l2_fh *fh, unsigned int n); -void v4l2_event_free(struct v4l2_fh *fh); int v4l2_event_dequeue(struct v4l2_fh *fh, struct v4l2_event *event, int nonblocking); void v4l2_event_queue(struct video_device *vdev, const struct v4l2_event *ev); void v4l2_event_queue_fh(struct v4l2_fh *fh, const struct v4l2_event *ev); int v4l2_event_pending(struct v4l2_fh *fh); int v4l2_event_subscribe(struct v4l2_fh *fh, - struct v4l2_event_subscription *sub); + struct v4l2_event_subscription *sub, unsigned elems); int v4l2_event_unsubscribe(struct v4l2_fh *fh, struct v4l2_event_subscription *sub); +void v4l2_event_unsubscribe_all(struct v4l2_fh *fh); #endif /* V4L2_EVENT_H */ |