linux-kernel - Re: [Patch v5 12/12] Documention: v4l: Documentation for HEVC CIDs

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Date:   Fri, 7 Jul 2017 17:59:21 +0300
From:   Stanimir Varbanov <stanimir.varbanov@...aro.org>
To:     Smitha T Murthy <smitha.t@...sung.com>,
        linux-arm-kernel@...ts.infradead.org, linux-media@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     kyungmin.park@...sung.com, kamil@...as.org, jtp.park@...sung.com,
        a.hajda@...sung.com, mchehab@...nel.org, pankaj.dubey@...sung.com,
        krzk@...nel.org, m.szyprowski@...sung.com, s.nawrocki@...sung.com
Subject: Re: [Patch v5 12/12] Documention: v4l: Documentation for HEVC CIDs

Hi,

On 06/19/2017 08:10 AM, Smitha T Murthy wrote:
> Added V4l2 controls for HEVC encoder
> 
> Signed-off-by: Smitha T Murthy <smitha.t@...sung.com>
> ---
>  Documentation/media/uapi/v4l/extended-controls.rst | 364 +++++++++++++++++++++
>  1 file changed, 364 insertions(+)
> 
> diff --git a/Documentation/media/uapi/v4l/extended-controls.rst b/Documentation/media/uapi/v4l/extended-controls.rst
> index abb1057..7767c70 100644
> --- a/Documentation/media/uapi/v4l/extended-controls.rst
> +++ b/Documentation/media/uapi/v4l/extended-controls.rst
> @@ -1960,6 +1960,370 @@ enum v4l2_vp8_golden_frame_sel -
>      1, 2 and 3 corresponding to encoder profiles 0, 1, 2 and 3.
>  
>  

<cut>

> +``V4L2_CID_MPEG_VIDEO_HEVC_PROFILE``
> +    (enum)
> +
> +enum v4l2_mpeg_video_hevc_profile -
> +    Select the desired profile for HEVC encoder.
> +
> +.. raw:: latex
> +
> +    \begin{adjustbox}{width=\columnwidth}
> +
> +.. tabularcolumns:: |p{11.0cm}|p{10.0cm}|
> +
> +.. flat-table::
> +    :header-rows:  0
> +    :stub-columns: 0
> +
> +    * - ``V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN``
> +      - Main profile.

MAIN10?

> +    * - ``V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN_STILL_PICTURE``
> +      - Main still picture profile.
> +
> +.. raw:: latex
> +
> +    \end{adjustbox}
> +
> +

<cut>

> +MFC 10.10 MPEG Controls
> +-----------------------
> +
> +The following MPEG class controls deal with MPEG decoding and encoding
> +settings that are specific to the Multi Format Codec 10.10 device present
> +in the S5P and Exynos family of SoCs by Samsung.
> +
> +
> +.. _mfc1010-control-id:
> +
> +MFC 10.10 Control IDs
> +^^^^^^^^^^^^^^^^^^^^^
> +
> +``V4L2_CID_MPEG_MFC10_VIDEO_HEVC_REF_NUMBER_FOR_PFRAMES (integer)``
> +    Selects number of P reference pictures required for HEVC encoder.
> +    P-Frame can use 1 or 2 frames for reference.
> +
> +``V4L2_CID_MPEG_MFC10_VIDEO_HEVC_PREPEND_SPSPPS_TO_IDR (integer)``
> +    Indicates whether to generate SPS and PPS at every IDR. Setting it to 0
> +    disables generating SPS and PPS at every IDR. Setting it to one enables
> +    generating SPS and PPS at every IDR.
> +

I'm not sure those two should be driver specific, have to check does
venus driver has similar controls.

> +
>  .. _camera-controls:
>  
>  Camera Control Reference
> 

-- 
regards,
Stan