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[media] media: Add pad flag MEDIA_PAD_FL_MUST_CONNECT

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Pads that set this flag must be connected by an active link for the entity
to stream.

Signed-off-by: Sakari Ailus <[email protected]>
Acked-by: Sylwester Nawrocki <[email protected]>
Signed-off-by: Laurent Pinchart <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
This commit is contained in:
Sakari Ailus 2013-10-13 07:58:43 -03:00 • committed by Mauro Carvalho Chehab
commit d0700c5175
2 changed files with 10 additions and 0 deletions
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9
Documentation/DocBook/media/v4l/media-ioc-enum-links.xml
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@ -134,6 +134,15 @@
<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>If this flag is set and the pad is linked to any other
pad, then at least one of those links must be enabled for the
entity to be able to stream. There could be temporary reasons
(e.g. device configuration dependent) for the pad to need
enabled links even when this flag isn't set; the absence of the
flag doesn't imply there is none.</entry>
</row>
</tbody>
</tgroup>
</table>