Extended Matroska demuxer

This adds the following functionality:

* Read segment title and uses that for display in a UI
  There is an issue when the file does not specify a segment title. It will
  then fall back to a generic "(No title)", since I could not find a way to
  retrieve the file name the player shows.

* More implementation files

  Added:
   - demux_matroska.h
   - demux_matroska_chapters.h

  This breaks the OO-ish C visibility a bit, since there need to be public
  (i.e. non-static) interfaces between the units.

* Chapter Handling

  I did a rough initial implementation of Matroska's "editions" system. The
  demuxer will parse all editions from the header, and for each edition the
  top level of chapters. This is not quite the full spec as Matroska
  intends, but it should work fine as long as there is only a single edition
  and all editions/chapters only reference only one (the first and only)
  segment in the stream, and are supposed to apply to all tracks therein.

  When the stream has chapters, the demuxer will now handle skip events from
  the player to jump between chapters.

0 files changed, 0 insertions, 0 deletions