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authorAndreas Rheinhardt <andreas.rheinhardt@outlook.com>2022-01-15 22:56:26 +0100
committerAndreas Rheinhardt <andreas.rheinhardt@outlook.com>2022-01-19 11:54:23 +0100
commitc1b6acde36c5a38df0c48bfdcd950bb882f7b1d8 (patch)
treebc9b0109b5bebb4469d3e18cde59925646834001 /libavcodec/tests
parent6221491f9027c55464c3995d67c30e000608ddb2 (diff)
downloadffmpeg-c1b6acde36c5a38df0c48bfdcd950bb882f7b1d8.tar.gz
avformat/matroskaenc: Allow to use custom reformatting functions
Matroska uses variable-length elements and in order not to waste bytes on length fields, the length of the data to write needs to be known before writing the length field. Annex B H.264/5 and WavPack need to be reformatted to know this length and this currently involves writing the data into temporary buffers; AV1 sometimes suffers from this as well. This commit aims to solve this by adding a callback that is called twice per packet: Once to get the size and once to actually write the data. In case of WavPack and AV1 (where parsing is cheap due to length fields) both calls will just parse the data with only the second function writing anything. For H.264/5, the position of the NALUs will need to be stored to be written lateron. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Diffstat (limited to 'libavcodec/tests')
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