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[media] V4L: Add capability flags for memory-to-memory devices

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This patch adds new V4L2_CAP_VIDEO_M2M and V4L2_CAP_VIDEO_M2M_MPLANE
capability flags that are intended to be used for memory-to-memory (M2M)
devices, instead of ORed V4L2_CAP_VIDEO_CAPTURE and V4L2_CAP_VIDEO_OUTPUT.

V4L2_CAP_VIDEO_M2M flag is added at the drivers, CAPTURE and OUTPUT
capability flags are left untouched and will be removed in future,
after a transition period required for existing applications to be
adapted to check only for V4L2_CAP_VIDEO_M2M.

Signed-off-by: Sylwester Nawrocki <[email protected]>
Signed-off-by: Kyungmin Park <[email protected]>
Acked-by: Kamil Debski <[email protected]>
Acked-by: Andrzej Pietrasiewicz <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
This commit is contained in:
Sylwester Nawrocki 2012-07-26 09:30:00 -03:00 • committed by Mauro Carvalho Chehab
commit f0476a83d6
10 changed files with 70 additions and 16 deletions
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9
Documentation/DocBook/media/v4l/compat.xml
View file

@ -2471,6 +2471,15 @@ that used it. It was originally scheduled for removal in 2.6.35.
</orderedlist>
</section>
<section>
<title>V4L2 in Linux 3.6</title>
<orderedlist>
<listitem>
<para>Added V4L2_CAP_VIDEO_M2M and V4L2_CAP_VIDEO_M2M_MPLANE capabilities.</para>
</listitem>
</orderedlist>
</section>
<section id="other">
<title>Relation of V4L2 to other Linux multimedia APIs</title>

13
Documentation/DocBook/media/v4l/vidioc-querycap.xml
View file

@ -191,6 +191,19 @@ linkend="output">Video Output</link> interface.</entry>
<link linkend="planar-apis">multi-planar API</link> through the
<link linkend="output">Video Output</link> interface.</entry>
</row>
<row>
<entry><constant>V4L2_CAP_VIDEO_M2M</constant></entry>
<entry>0x00004000</entry>
<entry>The device supports the single-planar API through the
Video Memory-To-Memory interface.</entry>
</row>
<row>
<entry><constant>V4L2_CAP_VIDEO_M2M_MPLANE</constant></entry>
<entry>0x00008000</entry>
<entry>The device supports the
<link linkend="planar-apis">multi-planar API</link> through the
Video Memory-To-Memory interface.</entry>
</row>
<row>
<entry><constant>V4L2_CAP_VIDEO_OVERLAY</constant></entry>
<entry>0x00000004</entry>