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

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Message-Id: <20200623182809.1375-4-ezequiel@collabora.com>
Date:   Tue, 23 Jun 2020 15:28:05 -0300
From:   Ezequiel Garcia <ezequiel@...labora.com>
To:     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>,
        Nicolas Dufresne <nicolas.dufresne@...labora.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Maxime Ripard <mripard@...nel.org>,
        Paul Kocialkowski <paul.kocialkowski@...tlin.com>,
        Ezequiel Garcia <ezequiel@...labora.com>
Subject: [RFC 3/7] media: uapi: h264: clarify pic_order_cnt_bit_size field

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>
---
 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``
       -
-- 
2.26.0.rc2