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| author | Hans Verkuil <hverkuil-cisco@xs4all.nl> | 2020-02-10 11:42:38 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-02-24 17:52:44 +0100 |
| commit | 218fc9f2fcfbad70e7b2111eca591b1dc8e6c8a9 (patch) | |
| tree | e93987baba2ac953bc08cfa8be1b86f7ca57bfef /Documentation/media/uapi/v4l/vidioc-decoder-cmd.rst | |
| parent | f86a183cda8798899ffc33031f17afd788b1ec90 (diff) | |
media: Documentation/media/uapi: more readable unions
Avoid adding an extra columns when describing unions in the documentation.
That makes it much harder to read. See e.g. VIDIOC_QUERY_EXT_CTRLS.
Instead start off a union with 'union {' and end it with an extra row
containing '}'.
This leaves a lot more space for the description of the fields.
This formatting technique was used in a few places already, but this
patches fixes all remaining occurrences of 'union' in the media uAPI.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Reported-by: Nicolas Dufresne <nicolas@ndufresne.ca>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'Documentation/media/uapi/v4l/vidioc-decoder-cmd.rst')
| -rw-r--r-- | Documentation/media/uapi/v4l/vidioc-decoder-cmd.rst | 26 |
1 files changed, 7 insertions, 19 deletions
diff --git a/Documentation/media/uapi/v4l/vidioc-decoder-cmd.rst b/Documentation/media/uapi/v4l/vidioc-decoder-cmd.rst index f1a504836f31..784c5980da8d 100644 --- a/Documentation/media/uapi/v4l/vidioc-decoder-cmd.rst +++ b/Documentation/media/uapi/v4l/vidioc-decoder-cmd.rst @@ -77,32 +77,25 @@ introduced in Linux 3.3. They are, however, mandatory for stateful mem2mem decod .. flat-table:: struct v4l2_decoder_cmd :header-rows: 0 :stub-columns: 0 - :widths: 11 24 12 16 106 + :widths: 1 1 1 3 * - __u32 - ``cmd`` - - - - The decoder command, see :ref:`decoder-cmds`. * - __u32 - ``flags`` - - - - Flags to go with the command. If no flags are defined for this command, drivers and applications must set this field to zero. - * - union + * - union { - (anonymous) - - - - - - - * - - - struct + * - struct - ``start`` - - Structure containing additional data for the ``V4L2_DEC_CMD_START`` command. * - - - - __s32 - ``speed`` - Playback speed and direction. The playback speed is defined as @@ -113,7 +106,6 @@ introduced in Linux 3.3. They are, however, mandatory for stateful mem2mem decod of 1 steps just one frame forward, a speed of -1 steps just one frame back. * - - - - __u32 - ``format`` - Format restrictions. This field is set by the driver, not the @@ -124,30 +116,26 @@ introduced in Linux 3.3. They are, however, mandatory for stateful mem2mem decod GOPs, which it can then play in reverse order. So to implement reverse playback the application must feed the decoder the last GOP in the video file, then the GOP before that, etc. etc. - * - - - struct + * - struct - ``stop`` - - Structure containing additional data for the ``V4L2_DEC_CMD_STOP`` command. * - - - - __u64 - ``pts`` - Stop playback at this ``pts`` or immediately if the playback is already past that timestamp. Leave to 0 if you want to stop after the last frame was decoded. - * - - - struct + * - struct - ``raw`` - - - - * - - - - __u32 - ``data``\ [16] - Reserved for future extensions. Drivers and applications must set the array to zero. + * - } + - |