linux-kernel - Re: [PATCH v3 2/3] media: v4l2-ctrl: Add control for VP9 profile

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Date:   Thu, 14 Jun 2018 11:06:20 +0300
From:   Stanimir Varbanov <stanimir.varbanov@...aro.org>
To:     Keiichi Watanabe <keiichiw@...omium.org>,
        linux-arm-kernel@...ts.infradead.org
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Tiffany Lin <tiffany.lin@...iatek.com>,
        Andrew-CT Chen <andrew-ct.chen@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Kamil Debski <kamil@...as.org>,
        Jeongtae Park <jtp.park@...sung.com>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Hans Verkuil <hverkuil@...all.nl>,
        Jonathan Corbet <corbet@....net>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Smitha T Murthy <smitha.t@...sung.com>,
        Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>,
        Tomasz Figa <tfiga@...omium.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mediatek@...ts.infradead.org, linux-arm-msm@...r.kernel.org,
        s.nawrocki@...sung.com
Subject: Re: [PATCH v3 2/3] media: v4l2-ctrl: Add control for VP9 profile

Hi Keiichi,

On 06/14/2018 10:46 AM, Keiichi Watanabe wrote:
> Add a new control V4L2_CID_MPEG_VIDEO_VP9_PROFILE for VP9
> profiles. This control allows to select a desired profile for VP9
> encoder and query for supported profiles by VP9 encoder/decoder.
> 
> Though this control is similar to V4L2_CID_MPEG_VIDEO_VP8_PROFILE, we need to
> separate this control from it because supported profiles usually differ between
> VP8 and VP9.
> 
> Signed-off-by: Keiichi Watanabe <keiichiw@...omium.org>
> ---
>  .../media/uapi/v4l/extended-controls.rst      | 25 +++++++++++++++++++
>  drivers/media/v4l2-core/v4l2-ctrls.c          | 11 ++++++++
>  include/uapi/linux/v4l2-controls.h            |  7 ++++++
>  3 files changed, 43 insertions(+)
> 
> diff --git a/Documentation/media/uapi/v4l/extended-controls.rst b/Documentation/media/uapi/v4l/extended-controls.rst
> index de99eafb0872..095b42e9d6fe 100644
> --- a/Documentation/media/uapi/v4l/extended-controls.rst
> +++ b/Documentation/media/uapi/v4l/extended-controls.rst
> @@ -1980,6 +1980,31 @@ enum v4l2_mpeg_video_vp8_profile -
>      * - ``V4L2_MPEG_VIDEO_VP8_PROFILE_3``
>        - Profile 3
> 
> +.. _v4l2-mpeg-video-vp9-profile:
> +
> +``V4L2_CID_MPEG_VIDEO_VP9_PROFILE``
> +    (enum)
> +
> +enum v4l2_mpeg_video_vp9_profile -

what about vp9 levels, shouldn't we add them too? Or we will add it when
there is a user.


-- 
regards,
Stan