Until now an API user with a non-libavformat MP4 or Matroska demuxer
would have had to manually filter the extradata to skip the first four
bytes when passing data to libavcodec, so that only the OBUs would
remain. Now the AV1CodecConfigurationRecord structure can be passed
to libavcodec as-is. This is lets it to be dealt with in a similar
manner to AVC or HEVC.
This is done in the following steps:
1. A nice helper by Mark is added so that it can be utilized in stead
of ff_cbs_read from both the decoder and parser after the CBS gains
the capability to handle AV1CodecConfigurationRecord structures.
2. Support is added to AV1 CBS for handling AV1CodecConfigurationRecord
in a similar vein to AVC/HEVC's avcc/hvcc handling.
3. AV1 decoder and parser are switched to utilize the newly added
helper functionality.
4. Support is added for writing out the passed AV1CodecConfigurationRecord
in ff_isom_write_av1c, which is called from the MP4 and Matroska
writers.
5. Finally, both MP4 and Matroska demuxers are changed to expose the
full AV1CodecConfigurationRecord as extradata.
Jan Ekström (5):
avcodec/cbs_av1: add support for standard MP4/Matroska extradata
avcodec/av1{dec,parser}: move to ff_cbs_read_extradata_from_codec
avformat/av1: add support for passing through MP4/Matroska av1c
avformat/mov: remove special handling of av1c extradata
avformat/matroskadec: remove special handling of av1c extradata
Mark Thompson (1):
cbs: Add function to read extradata from an AVCodecContext
libavcodec/av1_parser.c | 2 +-
libavcodec/av1dec.c | 5 ++-
libavcodec/cbs.c | 77 ++++++++++++++++++++-------------------
libavcodec/cbs.h | 11 ++++++
libavcodec/cbs_av1.c | 34 +++++++++++++++++
libavformat/av1.c | 14 +++++++
libavformat/matroskadec.c | 4 --
libavformat/mov.c | 30 +--------------
8 files changed, 103 insertions(+), 74 deletions(-)
--
2.28.0
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