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| author | Ezequiel Garcia <ezequiel@collabora.com> | 2021-04-29 16:48:15 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-05-23 19:21:31 +0200 |
| commit | 45f97ba1ce8059632c6f1518fda1faedd7db55fb (patch) | |
| tree | cc61de5e13e977a81cf17949efe94db8124bbcfd /Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst | |
| parent | 701a6a410c319729c86bfb696860f21adbff1bfa (diff) | |
media: uapi: mpeg2: Remove V4L2_CID_MPEG_VIDEO_MPEG2_SLICE_PARAMS
The Hantro and Cedrus drivers work in frame-mode,
meaning they expect all the slices in a picture (either frame
or field structure) to be passed in each OUTPUT buffer.
These two are the only V4L2 MPEG-2 stateless decoders currently
supported. Given the VA-API drivers also work per-frame,
coalescing all the MPEG-2 slices in a buffer before the decoding
operation, it makes sense to not expect slice-mode drivers and
therefore remove V4L2_CID_MPEG_VIDEO_MPEG2_SLICE_PARAMS.
This is done to avoid carrying an unused interface. If needed,
this control can be added without breaking backwards compatibility.
Note that this would mean introducing a enumerator control to
specify the decoding mode (see V4L2_CID_STATELESS_H264_DECODE_MODE).
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Co-developed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Tested-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
Tested-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst')
| -rw-r--r-- | Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst b/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst index afc1505a3a7e1..07e54029e1e91 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst @@ -417,12 +417,6 @@ See also the examples in :ref:`control`. - any - An unsigned 32-bit valued control ranging from minimum to maximum inclusive. The step value indicates the increment between values. - * - ``V4L2_CTRL_TYPE_MPEG2_SLICE_PARAMS`` - - n/a - - n/a - - n/a - - A struct :c:type:`v4l2_ctrl_mpeg2_slice_params`, containing MPEG-2 - slice parameters for stateless video decoders. * - ``V4L2_CTRL_TYPE_MPEG2_QUANTISATION`` - n/a - n/a |