videodev2: add new event type V4L2_EVENT_SIGNALCHANGED

PATCH New Mikhail Domrachev 1 participant 1 message Mar 31, 2014

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Documentation Media (V4L/DVB)

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Mikhail Domrachev

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2014-03-31 13:50 UTC #0 lore raw

PATCH v2 2/3 videodev2: add new event type V4L2_EVENT_SIGNALCHANGED

Applications subscribed for this event can be notified about changes of TV standard.

Signed-off-by Mikhail Domrachev <[email protected]>

---
 Documentation/DocBook/media/v4l/vidioc-subscribe-event.xml | 7 +++++++
 include/uapi/linux/videodev2.h                             | 1 +
 2 files changed, 8 insertions(+)

Documentation/DocBook/media/v4l/vidioc-subscribe-event.xml +7 -0

index 5c70b61..dc7cb9f 100644
@@ -155,6 +155,13 @@
 	    </entry>
 	  </row>
 	  <row>
+	    <entry><constant>V4L2_EVENT_SIGNALCHANGED</constant></entry>
+	    <entry>5</entry>
+	    <entry>This event is triggered when TV standard of the input signal is changed.
+		   New detected standard of type &v4l2-std-id; placed to u.data[] field of &v4l2-event;
+	    </entry>
+	  </row>
+	  <row>
 	    <entry><constant>V4L2_EVENT_PRIVATE_START</constant></entry>
 	    <entry>0x08000000</entry>
 	    <entry>Base event number for driver-private events.</entry>

include/uapi/linux/videodev2.h +1 -0

index e35ad6c..45094f2 100644
@@ -1765,6 +1765,7 @@ struct v4l2_streamparm {
 #define V4L2_EVENT_EOS				2
 #define V4L2_EVENT_CTRL				3
 #define V4L2_EVENT_FRAME_SYNC			4
+#define V4L2_EVENT_SIGNALCHANGED		5
 #define V4L2_EVENT_PRIVATE_START		0x08000000
 
 /* Payload for V4L2_EVENT_VSYNC */

Signature · 1 line

1.8.5.3