On 05/20/2016 01:40 AM, Laurent Pinchart wrote:
> Add composer, pixel formatter, pixel encoding converter and scaler
> functions.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart+rene...@ideasonboard.com>
Acked-by: Hans Verkuil <hans.verk...@cisco.com>
Looks good!
Hans
> ---
> Documentation/DocBook/media/v4l/media-types.xml | 55
> +++++++++++++++++++++++++
> include/uapi/linux/media.h | 9 ++++
> 2 files changed, 64 insertions(+)
>
> diff --git a/Documentation/DocBook/media/v4l/media-types.xml
> b/Documentation/DocBook/media/v4l/media-types.xml
> index 5e3f20fdcf17..60fe841f8846 100644
> --- a/Documentation/DocBook/media/v4l/media-types.xml
> +++ b/Documentation/DocBook/media/v4l/media-types.xml
> @@ -121,6 +121,61 @@
> <entry><constant>MEDIA_ENT_F_AUDIO_MIXER</constant></entry>
> <entry>Audio Mixer Function Entity.</entry>
> </row>
> + <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
> + means.
> + </entry>
> + </row>
> + <row>
> +
> <entry><constant>MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER</constant></entry>
> + <entry>Video pixel formatter. An entity capable of pixel formatting
> + must have at least one sink pad and one source pad. Read
> + pixel formatters read pixels from memory and perform a subset
> + of unpacking, cropping, color keying, alpha multiplication
> + and pixel encoding conversion. Write pixel formatters perform
> + a subset of dithering, pixel encoding conversion and packing
> + and write pixels to memory.
> + </entry>
> + </row>
> + <row>
> +
> <entry><constant>MEDIA_ENT_F_PROC_VIDEO_PIXEL_ENC_CONV</constant></entry>
> + <entry>Video pixel encoding converter. An entity capable of pixel
> + enconding conversion must have at least one sink pad and one
> + source pad, and convert the encoding of pixels received on
> + its sink pad(s) to a different encoding output on its source
> + pad(s). Pixel encoding conversion includes but isn't limited
> + to RGB to/from HSV, RGB to/from YUV and CFA (Bayer) to RGB
> + conversions.
> + </entry>
> + </row>
> + <row>
> + <entry><constant>MEDIA_ENT_F_PROC_VIDEO_LUT</constant></entry>
> + <entry>Video look-up table. An entity capable of video lookup table
> + processing must have one sink pad and one source pad. It uses
> + the values of the pixels received on its sink pad to look up
> + entries in internal tables and output them on its source pad.
> + The lookup processing can be performed on all components
> + separately or combine them for multi-dimensional table
> + lookups.
> + </entry>
> + </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 scale 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). Binning and
> + skipping are considered as scaling.
> + </entry>
> + </row>
> </tbody>
> </tgroup>
> </table>
> diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h
> index e226bc35c639..bff3ffdfd55f 100644
> --- a/include/uapi/linux/media.h
> +++ b/include/uapi/linux/media.h
> @@ -96,6 +96,15 @@ struct media_device_info {
> #define MEDIA_ENT_F_AUDIO_MIXER (MEDIA_ENT_F_BASE + 0x03003)
>
> /*
> + * Processing entities
> + */
> +#define MEDIA_ENT_F_PROC_VIDEO_COMPOSER (MEDIA_ENT_F_BASE +
> 0x4001)
> +#define MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER (MEDIA_ENT_F_BASE +
> 0x4002)
> +#define MEDIA_ENT_F_PROC_VIDEO_PIXEL_ENC_CONV (MEDIA_ENT_F_BASE +
> 0x4003)
> +#define MEDIA_ENT_F_PROC_VIDEO_LUT (MEDIA_ENT_F_BASE + 0x4004)
> +#define MEDIA_ENT_F_PROC_VIDEO_SCALER (MEDIA_ENT_F_BASE +
> 0x4005)
> +
> +/*
> * Connectors
> */
> /* It is a responsibility of the entity drivers to add connectors and links
> */
>
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