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| author |   Ezequiel Garcia <ezequiel@collabora.com> | 2019-08-16 13:01:25 -0300 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-08-19 13:23:12 -0300 |
| commit | 8cae93e090113e46bd29a99c1727d8f13ea12fdf (patch) | |
| tree | 14bd89209cf54424272a7b1100f6765985ed7dca /include/media | |
| parent | media: uapi: h264: Add the concept of decoding mode (diff) | |
| download | linux-dev-8cae93e090113e46bd29a99c1727d8f13ea12fdf.tar.xz linux-dev-8cae93e090113e46bd29a99c1727d8f13ea12fdf.zip | |
media: uapi: h264: Add the concept of start code
Stateless decoders have different expectations about the
start code that is prepended on H264 slices. Add a
menu control to express the supported start code types
(including no start code).
Drivers are allowed to support only one start code type,
but they can support both too.
Note that this is independent of the H264 decoding mode,
which specifies the granularity of the decoding operations.
Either in frame-based or slice-based mode, this new control
will allow to define the start code expected on H264 slices.
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Tested-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'include/media')
| -rw-r--r-- | include/media/h264-ctrls.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/media/h264-ctrls.h b/include/media/h264-ctrls.h index 928c48c57282..ba2876a64cf6 100644 --- a/include/media/h264-ctrls.h +++ b/include/media/h264-ctrls.h @@ -27,6 +27,7 @@ #define V4L2_CID_MPEG_VIDEO_H264_SLICE_PARAMS (V4L2_CID_MPEG_BASE+1003) #define V4L2_CID_MPEG_VIDEO_H264_DECODE_PARAMS (V4L2_CID_MPEG_BASE+1004) #define V4L2_CID_MPEG_VIDEO_H264_DECODE_MODE (V4L2_CID_MPEG_BASE+1005) +#define V4L2_CID_MPEG_VIDEO_H264_START_CODE (V4L2_CID_MPEG_BASE+1006) /* enum v4l2_ctrl_type type values */ #define V4L2_CTRL_TYPE_H264_SPS 0x0110 @@ -40,6 +41,11 @@ enum v4l2_mpeg_video_h264_decode_mode { V4L2_MPEG_VIDEO_H264_DECODE_MODE_FRAME_BASED, }; +enum v4l2_mpeg_video_h264_start_code { + V4L2_MPEG_VIDEO_H264_START_CODE_NONE, + V4L2_MPEG_VIDEO_H264_START_CODE_ANNEX_B, +}; + #define V4L2_H264_SPS_CONSTRAINT_SET0_FLAG 0x01 #define V4L2_H264_SPS_CONSTRAINT_SET1_FLAG 0x02 #define V4L2_H264_SPS_CONSTRAINT_SET2_FLAG 0x04 |