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Commit 53bf0f44 authored by Kamil Debski's avatar Kamil Debski Committed by Mauro Carvalho Chehab
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[media] v4l: Define video buffer flag for the COPY timestamp type 



Define video buffer flag for the COPY timestamp. In this case the timestamp
value is copied from the OUTPUT to the corresponding CAPTURE buffer.

Signed-off-by: default avatarKamil Debski <k.debski@samsung.com>
Signed-off-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: default avatarSylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarSylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 9776e171

Documentation/DocBook/media/v4l/io.xml

+6 −0
Original line number Diff line number Diff line
@@ -1145,6 +1145,12 @@ in which case caches have not been used.</entry> 
	    same clock outside V4L2, use

	    <function>clock_gettime(2)</function> .</entry>

	  </row>

	  <row>

	    <entry><constant>V4L2_BUF_FLAG_TIMESTAMP_COPY</constant></entry>

	    <entry>0x4000</entry>

	    <entry>The CAPTURE buffer timestamp has been taken from the

	    corresponding OUTPUT buffer. This flag applies only to mem2mem devices.</entry>

	  </row>

	</tbody>

      </tgroup>

    </table>

include/uapi/linux/videodev2.h

+1 −0
Original line number Diff line number Diff line
@@ -705,6 +705,7 @@ struct v4l2_buffer { 
#define V4L2_BUF_FLAG_TIMESTAMP_MASK		0xe000

#define V4L2_BUF_FLAG_TIMESTAMP_UNKNOWN		0x0000

#define V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC	0x2000

#define V4L2_BUF_FLAG_TIMESTAMP_COPY		0x4000



/**

 * struct v4l2_exportbuffer - export of video buffer as DMABUF file descriptor