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Diffstat (limited to 'include/media/v4l2-event.h')
-rw-r--r--include/media/v4l2-event.h18
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 */

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