From: Nicolas Dufresne Date: Mon, 21 Feb 2022 19:37:27 +0000 (-0500) Subject: doc: media: Document VP9 reference_mode miss-placement X-Git-Tag: v6.6.17~7948^2~85^2~3 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=88c63ac741266bf3fc0812578199dfb16a3c31b5;p=platform%2Fkernel%2Flinux-rpi.git doc: media: Document VP9 reference_mode miss-placement The reference_mode derived syntax is part of the compressed headers and should have been moved into the corresponding control structure. Document this mistake. The value can be set to 0 if the driver does not require compressed headers information. Signed-off-by: Nicolas Dufresne Reviewed-by: Andrzej Pietrasiewicz Signed-off-by: Hans Verkuil [hverkuil: fix small typo in comment] --- diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec-stateless.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec-stateless.rst index cc080c4..c6ef05e 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec-stateless.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec-stateless.rst @@ -1692,7 +1692,12 @@ See section '7.3.1 Tx mode semantics' of the :ref:`vp9` specification for more d * - __u8 - ``reference_mode`` - Specifies the type of inter prediction to be used. See - :ref:`Reference Mode` for more details. + :ref:`Reference Mode` for more details. Note that + this is derived as part of the compressed header parsing process and + for this reason should have been part of + :c:type: `v4l2_ctrl_vp9_compressed_hdr` optional control. It is safe to + set this value to zero if the driver does not require compressed + headers. * - __u8 - ``reserved[7]`` - Applications and drivers must set this to zero.