[PATCH v4 13/36] [media] v4l2: add a frame timeout event

Steve Longerbeam
2017-02-16T02:19:15Z

Add a new FRAME_TIMEOUT event to signal that a video capture or
output device has timed out waiting for reception or transmit
completion of a video frame.

Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
---
Documentation/media/uapi/v4l/vidioc-dqevent.rst | 5 +++++
Documentation/media/videodev2.h.rst.exceptions | 1 +
include/uapi/linux/videodev2.h | 1 +
3 files changed, 7 insertions(+)

diff --git a/Documentation/media/uapi/v4l/vidioc-dqevent.rst b/Documentation/media/uapi/v4l/vidioc-dqevent.rst
index 8d663a7..dd77d9b 100644
--- a/Documentation/media/uapi/v4l/vidioc-dqevent.rst
+++ b/Documentation/media/uapi/v4l/vidioc-dqevent.rst
@@ -197,6 +197,11 @@ call.
the regions changes. This event has a struct
:c:type:`v4l2_event_motion_det`
associated with it.
+ * - ``V4L2_EVENT_FRAME_TIMEOUT``
+ - 7
+ - This event is triggered when the video capture or output device
+ has timed out waiting for the reception or transmit completion of
+ a frame of video.
* - ``V4L2_EVENT_PRIVATE_START``
- 0x08000000
- Base event number for driver-private events.
diff --git a/Documentation/media/videodev2.h.rst.exceptions b/Documentation/media/videodev2.h.rst.exceptions
index e11a0d0..5b0f767 100644
--- a/Documentation/media/videodev2.h.rst.exceptions
+++ b/Documentation/media/videodev2.h.rst.exceptions
@@ -459,6 +459,7 @@ replace define V4L2_EVENT_CTRL event-type
replace define V4L2_EVENT_FRAME_SYNC event-type
replace define V4L2_EVENT_SOURCE_CHANGE event-type
replace define V4L2_EVENT_MOTION_DET event-type
+replace define V4L2_EVENT_FRAME_TIMEOUT event-type
replace define V4L2_EVENT_PRIVATE_START event-type

replace define V4L2_EVENT_CTRL_CH_VALUE ctrl-changes-flags
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 46e8a2e3..e174c45 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -2132,6 +2132,7 @@ struct v4l2_streamparm {
#define V4L2_EVENT_FRAME_SYNC 4
#define V4L2_EVENT_SOURCE_CHANGE 5
#define V4L2_EVENT_MOTION_DET 6
+#define V4L2_EVENT_FRAME_TIMEOUT 7
#define V4L2_EVENT_PRIVATE_START 0x08000000

/* Payload for V4L2_EVENT_VSYNC */
--
2.7.4