core: add demux_sub pseudo demuxer

Subtitle files are opened in mplayer.c, not using the demuxer
infrastructure in general. Pretend that this is not the case (outside of
the loading code) by opening a pseudo demuxer that does nothing. One
advantage is that the initialization code is now the same, and there's
no confusion about what the difference between track->stream,
track->sh_sub and mpctx->sh_sub is supposed to be.

This is a bit stupid, and it would be much better if there were proper
subtitle demuxers (there are many in recent FFmpeg, but not Libav). So
for now this is just a transition to a more proper architecture. Look
at demux_sub like an artifical limb: it's ugly, but don't hate it - it
helps you to get on with your life.

1 files changed, 1 insertions, 0 deletions

diff --git a/Makefile b/Makefile
index e91564703e..6e52253543 100644
--- a/Makefile
+++ b/Makefile
@@ -205,6 +205,7 @@ SOURCES = talloc.c \
           demux/demux_mf.c \
           demux/demux_mkv.c \
           demux/demux_mpg.c \
+          demux/demux_sub.c \
           demux/demux_ts.c \
           demux/mp3_hdr.c \
           demux/parse_es.c \