linux-kernel - Re: [RFC 3/7] media: uapi: h264: clarify pic_order_cnt_bit

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Message-ID: <00e105d0706d6ae704eaedb2fe5371606fb2f9d6.camel@collabora.com>
Date:   Thu, 25 Jun 2020 11:06:37 -0400
From:   Nicolas Dufresne <nicolas.dufresne@...labora.com>
To:     Ezequiel Garcia <ezequiel@...labora.com>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Tomasz Figa <tfiga@...omium.org>, kernel@...labora.com,
        Jonas Karlman <jonas@...boo.se>,
        Hans Verkuil <hverkuil@...all.nl>,
        Alexandre Courbot <acourbot@...omium.org>,
        Jeffrey Kardatzke <jkardatzke@...omium.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Maxime Ripard <mripard@...nel.org>,
        Paul Kocialkowski <paul.kocialkowski@...tlin.com>
Subject: Re: [RFC 3/7] media: uapi: h264: clarify pic_order_cnt_bit_size
 field

Le mardi 23 juin 2020 à 15:28 -0300, Ezequiel Garcia a écrit :
> From: Philipp Zabel <p.zabel@...gutronix.de>
> 
> Since pic_order_cnt_bit_size is not a syntax element itself, explicitly
> state that it is the total size in bits of the pic_order_cnt_lsb,
> delta_pic_order_cnt_bottom, delta_pic_order_cnt[0], and
> delta_pic_order_cnt[1] syntax elements contained in the slice.
> 
> Signed-off-by: Philipp Zabel <p.zabel@...gutronix.de>
> [Ezequiel: rebase]
> Signed-off-by: Ezequiel Garcia <ezequiel@...labora.com>

Reviewed-by: Nicolas Dufresne <nicolas.dufresne@...labora.com>

> ---
>  Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
> index 7af12447a5b0..0808a36777b6 100644
> --- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
> +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
> @@ -1813,7 +1813,9 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type -
>        - Size in bits of the dec_ref_pic_marking() syntax element.
>      * - __u32
>        - ``pic_order_cnt_bit_size``
> -      -
> +      - Combined size in bits of the picture order count related syntax
> +        elements: pic_order_cnt_lsb, delta_pic_order_cnt_bottom,
> +        delta_pic_order_cnt0, and delta_pic_order_cnt1.
>      * - __u8
>        - ``cabac_init_idc``
>        -

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