diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/media/v4l2-ctrls.h | 19 | ||||
| -rw-r--r-- | include/media/v4l2-event.h | 18 | ||||
| -rw-r--r-- | include/media/v4l2-fh.h | 2 | ||||
| -rw-r--r-- | include/media/v4l2-subdev.h | 2 |
4 files changed, 15 insertions, 26 deletions
diff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h index a15e909..6966291 100644 --- a/include/media/v4l2-ctrls.h +++ b/include/media/v4l2-ctrls.h @@ -171,7 +171,6 @@ struct v4l2_ctrl_ref { * control is needed multiple times, so this is a simple * optimization. * @buckets: Buckets for the hashing. Allows for quick control lookup. - * @nr_of_refs: Total number of control references in the list. * @nr_of_buckets: Total number of buckets in the array. * @error: The error code of the first failed control addition. */ @@ -181,7 +180,6 @@ struct v4l2_ctrl_handler { struct list_head ctrl_refs; struct v4l2_ctrl_ref *cached; struct v4l2_ctrl_ref **buckets; - u16 nr_of_refs; u16 nr_of_buckets; int error; }; @@ -499,23 +497,6 @@ void v4l2_ctrl_add_event(struct v4l2_ctrl *ctrl, void v4l2_ctrl_del_event(struct v4l2_ctrl *ctrl, struct v4l2_subscribed_event *sev); -/** v4l2_ctrl_subscribe_fh() - Helper function that subscribes a control event. - * @fh: The file handler that subscribed the control event. - * @sub: The event to subscribe (type must be V4L2_EVENT_CTRL). - * @n: How many events should be allocated? (Passed to v4l2_event_alloc). - * Recommended to set to twice the number of controls plus whatever - * is needed for other events. This function will set n to - * max(n, 2 * fh->ctrl_handler->nr_of_refs). - * - * A helper function that initializes the fh for events, allocates the - * list of events and subscribes the control event. - * - * Typically called in the handler of VIDIOC_SUBSCRIBE_EVENT in the - * V4L2_EVENT_CTRL case. - */ -int v4l2_ctrl_subscribe_fh(struct v4l2_fh *fh, - struct v4l2_event_subscription *sub, unsigned n); - /* Helpers for ioctl_ops. If hdl == NULL then they will all return -EINVAL. */ int v4l2_queryctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_queryctrl *qc); int v4l2_querymenu(struct v4l2_ctrl_handler *hdl, struct v4l2_querymenu *qm); diff --git a/include/media/v4l2-event.h b/include/media/v4l2-event.h index eda17f8..8d681e5 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 */ diff --git a/include/media/v4l2-fh.h b/include/media/v4l2-fh.h index bfc0457..52513c2 100644 --- a/include/media/v4l2-fh.h +++ b/include/media/v4l2-fh.h @@ -40,10 +40,8 @@ struct v4l2_fh { /* Events */ wait_queue_head_t wait; struct list_head subscribed; /* Subscribed events */ - struct list_head free; /* Events ready for use */ struct list_head available; /* Dequeueable event */ unsigned int navailable; - unsigned int nallocated; /* Number of allocated events */ u32 sequence; }; diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h index 2884e3e..b05579b 100644 --- a/include/media/v4l2-subdev.h +++ b/include/media/v4l2-subdev.h @@ -513,8 +513,6 @@ struct v4l2_subdev { void *host_priv; /* subdev device node */ struct video_device devnode; - /* number of events to be allocated on open */ - unsigned int nevents; }; #define media_entity_to_v4l2_subdev(ent) \ |