[FFmpeg-devel] [PATCH] support for ordered chapters/segment linking in Matroska

[Anton Khirnov]

Hi,
these patches add support for $subj. A description of this feature can
be found here:
http://www.uppcon.se/thefluff/hurfdurf/?p=8
The first patch contains modifications to avformat.h/utils.c, in the
second are typedefs and reading necessary ids, third is file-loading
and read/seek code and fourh implements basic support to ffplay.
How it works: if the demuxer finds a EditionFlagOrdered flag it will
set avfc->matroska_ordered_chapters. If the player is interested, it
then calls matroska_load_linked_segments, which scans directory the
file is in and checks all mkv files there for segment UID match. Then
it return a list of contexts for all needed segments and functions for
reading/seeking on a virtual timeline. The player should also check
packets for PKT_FLAG_SEGMENSWITCH and reset/switch decoders
accordingly.

I realize my patch is somewhat hackish, but see no cleaner way of doing this.

Anton
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