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| author |   Ezequiel Garcia <ezequiel@collabora.com> | 2020-08-25 05:52:31 +0200 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-09-01 14:13:28 +0200 |
| commit | 4245232fa6ca58f79710732bd16cefe78b8b8bc4 (patch) | |
| tree | 0615ed0be12512d287872a8dfc94a374d2a8cf52 /tools/perf/scripts/python | |
| parent | media: uapi: h264: Clarify pic_order_cnt_bit_size field (diff) | |
media: uapi: h264: Increase size of 'first_mb_in_slice' field
Slice header syntax element 'first_mb_in_slice' can point
to the last macroblock, currently the field can only reference
65536 macroblocks which is insufficient for 8K videos.
Although unlikely, a 8192x4320 video (where macroblocks are 16x16),
would contain 138240 macroblocks on a frame.
As per the H264 specification, 'first_mb_in_slice' can be up to
PicSizeInMbs - 1, so increase the size of the field to 32-bits.
Note that v4l2_ctrl_h264_slice_params struct will be modified
in a follow-up commit, and so we defer its 64-bit padding.
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Tested-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions