linux-kernel - Re: [PATCH v5 2/5] docs: Document colorimetry class

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Message-ID: <ce79ea9f-df67-8d71-c351-d2255c74d4ad@xs4all.nl>
Date:   Tue, 16 Mar 2021 12:37:28 +0100
From:   Hans Verkuil <hverkuil-cisco@...all.nl>
To:     Stanimir Varbanov <stanimir.varbanov@...aro.org>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org
Cc:     Ezequiel Garcia <ezequiel@...labora.com>,
        Nicolas Dufresne <nicolas.dufresne@...labora.com>
Subject: Re: [PATCH v5 2/5] docs: Document colorimetry class

On 09/02/2021 17:24, Stanimir Varbanov wrote:
> Add a document for ext control colorimetry class.
> 
> Signed-off-by: Stanimir Varbanov <stanimir.varbanov@...aro.org>
> ---
>  .../userspace-api/media/v4l/common.rst        |  1 +
>  .../media/v4l/ext-ctrls-colorimetry.rst       | 22 +++++++++++++++++++
>  .../media/v4l/vidioc-g-ext-ctrls.rst          |  4 ++++
>  3 files changed, 27 insertions(+)
>  create mode 100644 Documentation/userspace-api/media/v4l/ext-ctrls-colorimetry.rst
> 
> diff --git a/Documentation/userspace-api/media/v4l/common.rst b/Documentation/userspace-api/media/v4l/common.rst
> index 8c263c5a85d8..ea0435182e44 100644
> --- a/Documentation/userspace-api/media/v4l/common.rst
> +++ b/Documentation/userspace-api/media/v4l/common.rst
> @@ -51,6 +51,7 @@ applicable to all devices.
>      ext-ctrls-fm-tx
>      ext-ctrls-fm-rx
>      ext-ctrls-detect
> +    ext-ctrls-colorimetry
>      fourcc
>      format
>      planar-apis
> diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-colorimetry.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-colorimetry.rst
> new file mode 100644
> index 000000000000..862f78b41b32
> --- /dev/null
> +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-colorimetry.rst
> @@ -0,0 +1,22 @@
> +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
> +
> +.. _colorimetry-controls:
> +
> +*****************************
> +Colorimetry Control Reference
> +*****************************
> +
> +The Colorimetry class includes controls for High Dynamic Range
> +imaging for representing colors in digital images and video. The
> +controls should be used for video and image encoding and decoding
> +as well as in HDMI receivers and transmitters.
> +
> +Colorimetry Control IDs
> +-----------------------
> +
> +.. _colorimetry-control-id:
> +
> +``V4L2_CID_COLORIMETRY_CLASS (class)``
> +    The Colorimetry class descriptor. Calling
> +    :ref:`VIDIOC_QUERYCTRL` for this control will
> +    return a description of this control class.
> diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst b/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst
> index b9c62affbb5a..8a95ebdd499a 100644
> --- a/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst
> +++ b/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst
> @@ -394,6 +394,10 @@ still cause this situation.
>        - 0xa40000
>        - The class containing stateless codec controls. These controls are
>  	described in :ref:`codec-stateless-controls`.
> +    * - ``V4L2_CTRL_CLASS_COLORIMETRY``
> +      - 0xa50000
> +      - The class containing colorimetry controls. These controls are
> +	described in :ref:`colorimetry-controls`.
>  
>  Return Value
>  ============
> 

Reviewed-by: Hans Verkuil <hverkuil-cisco@...all.nl>

Regards,

	Hans