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c4dc600f1f
Retarded webshit streaming protocols (well, DASH) chop a stream into small fragments, and move unchanging header parts to an "init" fragment to save some bytes (in the case at hand about 300 bytes for each fragment that is 100KB-200KB, sure was worth it, fucking idiots). Since mpv uses an even more retarded hack to inefficiently emulate DASH through EDL, it opens a new demuxer for every fragment. Thus the fragment needs to be virtually concatenated with the init fragment. (To be fair, I'm not sure whether the alternative, reusing the demuxer and letting it see a stream of byte-wise concatenated fragmenmts, would actually be saner.) demux_lavc.c contained a hack for this. Unfortunately, a certain shitty streaming site by an evil company, that will bestow dytopia upon us soon enough, sometimes serves webm based DASH instead of the expected mp4 DASH. And for some reason, libavformat's mkv demuxer can't handle the init fragment or rejects it for some reason. Since I'd rather eat mushrooms grown in Chernobyl than debugging, hacking, or (god no) contributing to FFmpeg, and since Chernobyl is so far away, make it work with our builtin mkv demuxer instead. This is not hard. We just need to copy the hack in demux_lavf.c to demux_mkv.c. Since I'm not _that_ much of a dumbfuck to actually do this, remove the shitty gross demux_lavf.c hack, and replace it by a slightly less bad generic implementation (stream_concat.c from the previous commit), and use it on all demuxers. Although this requires much more code, this frees demux_lavf.c from a hack, and doesn't require adding a duplicated one to demux_mkv.c, so to the naive eye this seems to be a much better outcome. Regarding the code, for some reason stream_memory_open() is never meant to fail, while stream_concat_open() can in extremely obscure situations, and (currently) not in this case, but we handle failure of it anyway. Yep. |
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| .. | ||
| cache.c | ||
| cache.h | ||
| codec_tags.c | ||
| codec_tags.h | ||
| cue.c | ||
| cue.h | ||
| demux_cue.c | ||
| demux_edl.c | ||
| demux_lavf.c | ||
| demux_libarchive.c | ||
| demux_mf.c | ||
| demux_mkv_timeline.c | ||
| demux_mkv.c | ||
| demux_null.c | ||
| demux_playlist.c | ||
| demux_raw.c | ||
| demux_timeline.c | ||
| demux.c | ||
| demux.h | ||
| ebml.c | ||
| ebml.h | ||
| matroska.h | ||
| packet.c | ||
| packet.h | ||
| stheader.h | ||
| timeline.c | ||
| timeline.h | ||