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| author | Boris Brezillon <boris.brezillon@collabora.com> | 2019-08-16 13:01:24 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-08-19 13:21:51 -0300 |
| commit | 5604be66a56867a784e162299a48c214921ffa1b (patch) | |
| tree | aac87abd8c1fbbe92907035b5b9750f1806ad7e1 /include/media | |
| parent | 7bb3c32abd7bafd346f667cccb7dfe9686f14ddd (diff) | |
| download | linux-5604be66a56867a784e162299a48c214921ffa1b.tar.gz linux-5604be66a56867a784e162299a48c214921ffa1b.tar.bz2 linux-5604be66a56867a784e162299a48c214921ffa1b.zip | |
media: uapi: h264: Add the concept of decoding mode
Some stateless decoders don't support per-slice decoding granularity
(or at least not in a way that would make them efficient or easy to use).
Expose a menu to control the supported decoding modes. Drivers are
allowed to support only one decoding but they can support both too.
To fully specify the decoding operation, we need to introduce
a start_byte_offset, to indicate where slices start.
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.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 | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/media/h264-ctrls.h b/include/media/h264-ctrls.h index 6160a69c0143..928c48c57282 100644 --- a/include/media/h264-ctrls.h +++ b/include/media/h264-ctrls.h @@ -26,6 +26,7 @@ #define V4L2_CID_MPEG_VIDEO_H264_SCALING_MATRIX (V4L2_CID_MPEG_BASE+1002) #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) /* enum v4l2_ctrl_type type values */ #define V4L2_CTRL_TYPE_H264_SPS 0x0110 @@ -34,6 +35,11 @@ #define V4L2_CTRL_TYPE_H264_SLICE_PARAMS 0x0113 #define V4L2_CTRL_TYPE_H264_DECODE_PARAMS 0x0114 +enum v4l2_mpeg_video_h264_decode_mode { + V4L2_MPEG_VIDEO_H264_DECODE_MODE_SLICE_BASED, + V4L2_MPEG_VIDEO_H264_DECODE_MODE_FRAME_BASED, +}; + #define V4L2_H264_SPS_CONSTRAINT_SET0_FLAG 0x01 #define V4L2_H264_SPS_CONSTRAINT_SET1_FLAG 0x02 #define V4L2_H264_SPS_CONSTRAINT_SET2_FLAG 0x04 @@ -125,6 +131,10 @@ struct v4l2_h264_pred_weight_table { struct v4l2_ctrl_h264_slice_params { /* Size in bytes, including header */ __u32 size; + + /* Offset in bytes to the start of slice in the OUTPUT buffer. */ + __u32 start_byte_offset; + /* Offset in bits to slice_data() from the beginning of this slice. */ __u32 header_bit_size; |