Re: [PATCH 1/2 v3] v4l: Define video buffer flag for the COPY timestamp type

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On Fri January 25 2013 11:29:56 Kamil Debski wrote:
> 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@xxxxxxxxxxx>
> Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>

Acked-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>

Regards,

	Hans

> ---
>  Documentation/DocBook/media/v4l/io.xml |    6 ++++++
>  include/uapi/linux/videodev2.h         |    1 +
>  2 files changed, 7 insertions(+)
> 
> diff --git a/Documentation/DocBook/media/v4l/io.xml b/Documentation/DocBook/media/v4l/io.xml
> index 73f202f..40ee987 100644
> --- a/Documentation/DocBook/media/v4l/io.xml
> +++ b/Documentation/DocBook/media/v4l/io.xml
> @@ -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>
> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
> index 72e9921..d5a59af 100644
> --- a/include/uapi/linux/videodev2.h
> +++ b/include/uapi/linux/videodev2.h
> @@ -697,6 +697,7 @@ 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
> 
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