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[RFC,1/4] media: Add pad flag MEDIA_PAD_FL_MUST_CONNECT

Message ID 1374256509-7850-2-git-send-email-sakari.ailus@iki.fi (mailing list archive)
State New, archived
Headers show

Commit Message

Sakari Ailus July 19, 2013, 5:55 p.m. UTC
Pads that set this flag must be connected by an active link for the entity
to stream.

Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
---
 Documentation/DocBook/media/v4l/media-ioc-enum-links.xml |    5 +++++
 include/uapi/linux/media.h                               |    1 +
 2 files changed, 6 insertions(+)
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Patch

diff --git a/Documentation/DocBook/media/v4l/media-ioc-enum-links.xml b/Documentation/DocBook/media/v4l/media-ioc-enum-links.xml
index 355df43..4725a99 100644
--- a/Documentation/DocBook/media/v4l/media-ioc-enum-links.xml
+++ b/Documentation/DocBook/media/v4l/media-ioc-enum-links.xml
@@ -134,6 +134,11 @@ 
 	    <entry>Output pad, relative to the entity. Output pads source data
 	    and are origins of links.</entry>
 	  </row>
+	  <row>
+	    <entry><constant>MEDIA_PAD_FL_MUST_CONNECT</constant></entry>
+	    <entry>A pad must be connected with an enabled link for
+	    the entity to be able to stream.</entry>
+	  </row>
 	</tbody>
       </tgroup>
     </table>
diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h
index ed49574..d847c76 100644
--- a/include/uapi/linux/media.h
+++ b/include/uapi/linux/media.h
@@ -98,6 +98,7 @@  struct media_entity_desc {
 
 #define MEDIA_PAD_FL_SINK		(1 << 0)
 #define MEDIA_PAD_FL_SOURCE		(1 << 1)
+#define MEDIA_PAD_FL_MUST_CONNECT	(1 << 2)
 
 struct media_pad_desc {
 	__u32 entity;		/* entity ID */