[media] v4l2: add a motion detection event

Add a new MOTION_DET event to signal when motion is detected.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 632de96b42d5..1477abebd35b 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -1799,6 +1799,7 @@ struct v4l2_streamparm {
 #define V4L2_EVENT_CTRL                         3
 #define V4L2_EVENT_FRAME_SYNC                   4
 #define V4L2_EVENT_SOURCE_CHANGE                5
+#define V4L2_EVENT_MOTION_DET                   6
 #define V4L2_EVENT_PRIVATE_START                0x08000000
 
 /* Payload for V4L2_EVENT_VSYNC */
@@ -1836,6 +1837,21 @@ struct v4l2_event_src_change {
         __u32 changes;
 };
 
+#define V4L2_EVENT_MD_FL_HAVE_FRAME_SEQ (1 << 0)
+
+/**
+ * struct v4l2_event_motion_det - motion detection event
+ * @flags:             if V4L2_EVENT_MD_FL_HAVE_FRAME_SEQ is set, then the
+ *                     frame_sequence field is valid.
+ * @frame_sequence:    the frame sequence number associated with this event.
+ * @region_mask:       which regions detected motion.
+ */
+struct v4l2_event_motion_det {
+        __u32 flags;
+        __u32 frame_sequence;
+        __u32 region_mask;
+};
+
 struct v4l2_event {
         __u32                           type;
         union {
@@ -1843,6 +1859,7 @@ struct v4l2_event {
                 struct v4l2_event_ctrl          ctrl;
                 struct v4l2_event_frame_sync    frame_sync;
                 struct v4l2_event_src_change    src_change;
+                struct v4l2_event_motion_det    motion_det;
                 __u8                            data[64];
         } u;
         __u32                           pending;