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| author | Nicolas Dufresne <nicolas.dufresne@collabora.com> | 2022-02-21 20:37:27 +0100 |
|---|---|---|
| committer | Hans Verkuil <hverkuil-cisco@xs4all.nl> | 2022-02-23 08:53:08 +0100 |
| commit | 88c63ac741266bf3fc0812578199dfb16a3c31b5 (patch) | |
| tree | 5da7fcd45830a070b59f6caa7182e4b075512d5f /Documentation | |
| parent | doc: media: Document MM21 tiled format (diff) | |
| download | linux-88c63ac741266bf3fc0812578199dfb16a3c31b5.tar.xz linux-88c63ac741266bf3fc0812578199dfb16a3c31b5.zip | |
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 <nicolas.dufresne@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
[hverkuil: fix small typo in comment]
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/userspace-api/media/v4l/ext-ctrls-codec-stateless.rst | 7 |
1 files changed, 6 insertions, 1 deletions
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 cc080c4257d0..c6ef05e0d3a4 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<vp9_reference_mode>` for more details. + :ref:`Reference Mode<vp9_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. |