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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: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Kamil Debski 2013-01-25 06:29:56 -03:00 committed by Mauro Carvalho Chehab
parent 9776e17189
commit 53bf0f446b
2 changed files with 7 additions and 0 deletions
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6
Documentation/DocBook/media/v4l/io.xml
View File

@ -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>

1
include/uapi/linux/videodev2.h
View File

@ -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