Andreas Rheinhardt dc2f6b54ac avformat/matroskaenc: Avoid allocations for SeekHead ... Up until e7ddafd5, the Matroska muxer wrote two SeekHeads: One at the beginning referencing the main level 1 elements (i.e. not the Clusters) and one at the end, referencing the Clusters. This second SeekHead was useless and has therefore been removed. Yet the SeekHead-related functions and structures are still geared towards this usecase: They are built around an allocated array of variable size that gets reallocated every time an element is added to it although the maximum number of Seek entries is a small compile-time constant, so that one should rather include the array in the SeekHead structure itself; and said structure should be contained in the MatroskaMuxContext instead of being allocated separately. The earlier code reserved space for a SeekHead with 10 entries, although we currently write at most 6. Reducing said number implied that every Matroska/Webm file will be 84 bytes smaller and required to adapt several FATE tests; furthermore, the reserved amount overestimated the amount needed for for the SeekHead's length field and how many bytes need to be reserved to write a EBML Void element, bringing the total reduction to 89 bytes. This also fixes a potential segfault: If !mkv->is_live and if the AVIOContext is initially unseekable when writing the header, the SeekHead is already written when writing the header and this used to free the SeekHead-related structures that have been allocated. But if the AVIOContext happens to be seekable when writing the trailer, it will be attempted to write the SeekHead again which will lead to segfaults because the corresponding structures have already been freed. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>		2020-03-26 03:19:56 +01:00
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acodec-adpcm-yamaha	…
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acodec-alac	avformat/movenc: ensure we don't write the major brand as a compatible brand more than once	2019-12-21 11:57:28 -03:00
acodec-flac	…
acodec-mp2	…
acodec-pcm-alaw	…
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acodec-pcm-s8	avformat/movenc: ensure we don't write the major brand as a compatible brand more than once	2019-12-21 11:57:28 -03:00
acodec-pcm-s16be	avformat/movenc: ensure we don't write the major brand as a compatible brand more than once	2019-12-21 11:57:28 -03:00
acodec-pcm-s16le	…
acodec-pcm-s24be	avformat/movenc: ensure we don't write the major brand as a compatible brand more than once	2019-12-21 11:57:28 -03:00
acodec-pcm-s24le	…
acodec-pcm-s32be	avformat/movenc: ensure we don't write the major brand as a compatible brand more than once	2019-12-21 11:57:28 -03:00
acodec-pcm-s32le	…
acodec-pcm-u8	…
cache-pipe	…
empty-edit-mp4	…
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lavf-aiff	…
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lavf-dv	Merge commit '618d02c1fa9e74d490cace64a7d15762656b521c'	2019-03-14 14:36:24 -03:00
lavf-flv	Merge commit '618d02c1fa9e74d490cace64a7d15762656b521c'	2019-03-14 14:36:24 -03:00
lavf-gif	…
lavf-gxf	…
lavf-jpg	…
lavf-mkv	avformat/matroskaenc: Avoid allocations for SeekHead	2020-03-26 03:19:56 +01:00
lavf-mmf	…
lavf-mov	avformat/movenc: ensure we don't write the major brand as a compatible brand more than once	2019-12-21 11:57:28 -03:00
lavf-mpg	…
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lavf-rm	…
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lavf-tiff	…
lavf-ts	avformat/mpegtsenc: get rid of packet counting for sdt/pat/pmt	2019-08-23 22:49:01 +02:00
lavf-ul	…
lavf-voc	…
lavf-wav	…
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lavf-y4m	Merge commit 'f8df5e2f31a5ba7b30a0e1caaaf5a03c753b3f9b'	2019-03-14 14:59:45 -03:00
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vsynth_lena-dnxhd-1080i	avformat/movenc: ensure we don't write the major brand as a compatible brand more than once	2019-12-21 11:57:28 -03:00
vsynth_lena-dv	…
vsynth_lena-dv-50	…
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vsynth_lena-mpeg4	avformat/movenc: ensure we don't write the major brand as a compatible brand more than once	2019-12-21 11:57:28 -03:00
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vsynth_lena-svq1	avformat/movenc: ensure we don't write the major brand as a compatible brand more than once	2019-12-21 11:57:28 -03:00
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