Hi Hans,
On Friday 25 Mar 2016 13:44:27 Hans Verkuil wrote:
> On 03/25/2016 11:43 AM, Laurent Pinchart wrote:
> > Add composer, format converter and scaler functions, as well as generic
> > video processing to be used when no other processing function is
> > applicable.
> >
> > Signed-off-by: Laurent Pinchart
> > <laurent.pinchart+rene...@ideasonboard.com>
> > ---
> >
> > Documentation/DocBook/media/v4l/media-types.xml | 34 ++++++++++++++++++++
> > include/uapi/linux/media.h | 8 ++++++
> > 2 files changed, 42 insertions(+)
> >
> > diff --git a/Documentation/DocBook/media/v4l/media-types.xml
> > b/Documentation/DocBook/media/v4l/media-types.xml index
> > 5e3f20fdcf17..a6e171e80bce 100644
> > --- a/Documentation/DocBook/media/v4l/media-types.xml
> > +++ b/Documentation/DocBook/media/v4l/media-types.xml
> > @@ -121,6 +121,40 @@
> >
> > <entry><constant>MEDIA_ENT_F_AUDIO_MIXER</constant></entry>
> > <entry>Audio Mixer Function Entity.</entry>
> >
> > </row>
> >
> > + <row>
> > +
<entry><constant>MEDIA_ENT_F_PROC_VIDEO_GENERIC</constant></entry>
> > + <entry>Generic video processing, when no other processing
function
> > + is applicable.
> > + </entry>
>
> Does someone in this patch series use this one? If not, then just drop it.
> And if there is one, which patch is it?
Yes, I have three entities using this, two look up tables (1D and 3D) and an
entity handling the interface between the VSP and the display device.
> > + <row>
> > +
<entry><constant>MEDIA_ENT_F_PROC_VIDEO_COMPOSER</constant></entry>
> > + <entry>Video composer (blender). An entity capable of video
> > + composing must have at least two sink pads and one source
> > + pad, and composes input video frames onto output video
> > + frames. Composition can be performed using alpha blending,
> > + color keying, raster operations (ROP), stitching or any other
> > + mean.
>
> s/mean/means/
Will fix, thanks.
> > + </entry>
> > + </row>
> > + </row>
> > +
<entry><constant>MEDIA_ENT_F_PROC_VIDEO_CONVERTER</constant></entry>
> > + <entry>Video format converter. An entity capable of video format
> > + conversion must have at least one sink pad and one source
> > + pad, and convert the format of pixels received on its sink
> > + pad(s) to a different format output on its source pad(s).
> > + </entry>
>
> Does this cover a de-interlacer?
Deinterlacing and pixel format conversion seem to be different concepts to me,
I wouldn't include deinterlacers here.
> > + </row>
> > + <row>
> > + <entry><constant>MEDIA_ENT_F_PROC_VIDEO_SCALER</constant></entry>
> > + <entry>Video scaler. An entity capable of video scaling must have
> > + at least one sink pad and one source pad, and scaling the
> > + video frame(s) received on its sink pad(s) to a different
> > + resolution output on its source pad(s). The range of
> > + supported scaling ratios is entity-specific and can differ
> > + between the horizontal and vertical directions. In particular
> > + scaling can be supported in one direction only.
> > + </entry>
> > + </row>
> >
> > </tbody>
> >
> > </tgroup>
> >
> > </table>
>
> Regards,
>
> Hans
>
> > diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h
> > index df59edee25d1..884ec1cae09d 100644
> > --- a/include/uapi/linux/media.h
> > +++ b/include/uapi/linux/media.h
> > @@ -95,6 +95,14 @@ struct media_device_info {
> >
> > #define MEDIA_ENT_F_AUDIO_MIXER (MEDIA_ENT_F_BASE + 0x03003)
> >
> > /*
> >
> > + * Processing entities
> > + */
> > +#define MEDIA_ENT_F_PROC_VIDEO_GENERIC (MEDIA_ENT_F_BASE +
> > 0x4001)
> > +#define MEDIA_ENT_F_PROC_VIDEO_COMPOSER (MEDIA_ENT_F_BASE +
> > 0x4002)
> > +#define MEDIA_ENT_F_PROC_VIDEO_CONVERTER (MEDIA_ENT_F_BASE + 0x4003)
> > +#define MEDIA_ENT_F_PROC_VIDEO_SCALER (MEDIA_ENT_F_BASE +
> > 0x4004)
> > +
> > +/*
> >
> > * Connectors
> > */
> >
> > /* It is a responsibility of the entity drivers to add connectors and
> > links */
--
Regards,
Laurent Pinchart
