diff options
| author | Jonas Karlman <jonas@kwiboo.se> | 2019-10-29 03:00:51 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@kernel.org> | 2019-11-09 10:46:07 +0300 |
| commit | 0b0393d59eb4a58456d128a782c42f924eedab16 (patch) | |
| tree | cff0a3b164684eac17d4fd45e6d7e3a70a2721a4 /Documentation/media | |
| parent | 1fd50a2c294457508f06b8b631d01a58de81cdd2 (diff) | |
| download | linux-0b0393d59eb4a58456d128a782c42f924eedab16.tar.xz | |
media: uapi: h264: clarify expected scaling_list_4x4/8x8 order
Clarify that the expected order of scaling lists should follow the order
they are listed in the H264 standard.
The expected scaling list order,
for 4x4: Intra Y, Intra Cb, Intra Cr, Inter Y, Inter Cb, Inter Cr,
for 8x8: Intra Y, Inter Y, Intra Cb, Inter Cb, Intra Cr, Inter Cr.
Also clarify that the values in a scaling list should be in matrix order,
the same value order that vaapi, vdpau and nvdec use.
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Diffstat (limited to 'Documentation/media')
| -rw-r--r-- | Documentation/media/uapi/v4l/ext-ctrls-codec.rst | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/Documentation/media/uapi/v4l/ext-ctrls-codec.rst b/Documentation/media/uapi/v4l/ext-ctrls-codec.rst index a1209f68c5e8..28313c0f4e7c 100644 --- a/Documentation/media/uapi/v4l/ext-ctrls-codec.rst +++ b/Documentation/media/uapi/v4l/ext-ctrls-codec.rst @@ -1713,10 +1713,14 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type - * - __u8 - ``scaling_list_4x4[6][16]`` - - + - Scaling matrix after applying the inverse scanning process. + Expected list order is Intra Y, Intra Cb, Intra Cr, Inter Y, + Inter Cb, Inter Cr. * - __u8 - ``scaling_list_8x8[6][64]`` - - + - Scaling matrix after applying the inverse scanning process. + Expected list order is Intra Y, Inter Y, Intra Cb, Inter Cb, + Intra Cr, Inter Cr. ``V4L2_CID_MPEG_VIDEO_H264_SLICE_PARAMS (struct)`` Specifies the slice parameters (as extracted from the bitstream) |