Matroska support in the FFmpeg plugin. I have a few streams
to test with, most didn't play right with the Matroska reader,
many simply crash. With the FFmpeg matroska support, most files
do play fine. Seeking the audio stream is a problem, in that
the FFmpeg code does not build the index for the audio stream,
and so seeking always falls back to regions of the file that
have already played. The audio will catch up eventually and
playback will be fine again. A minority of files I could test
with don't work right, those seem all to be older files.
Overall, the support for Matroska files has much improved
with this commit. I am still investigating why FFplay has
no trouble seeking in mkv files, while the FFmpeg plugin only
seeks perfectly in video streams. It may be a problem that
the FFmpeg plugin uses completely separate AVFormatContexts
for each stream, which on the other hand allows to seek BMediaTracks
independently from each other and resolves concurrency issues.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38541 a95241bf-73f2-0310-859d-f6bbb57e9c96
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