[MPlayer-dev-eng] [PATCH] latm faad handling

[Dan Oscarsson]

Many mpeg-ts streams with LATM do not work correctly. From what I could
see this is because mplayer do not recognise it is LATM. In a previous
patch I posted I added so aac_probe tried to located LATM header. This
worked better but not for all files. I have now done further tests and
they showed that what looks like a LATM header is not always a working
LATM header.

The following patch works for all my files with LATM or AAC audio.

It does:

 - libfaad2 already implements LATM header searching and verification
   so I have added so you can call faad2's init and have it return
   failure if LATM is not found.

 - in ad_faad.c: first look for LATM using faad2,
   if this fails and it is a mpeg-ts-stream with LATM in,
       probe further in audio stream for LATM (tests show
       that this is necessary),
   if no LATM is found, do like before, probe using aac_probe
   for a AAC stream header and call faad init.

 - demux_ts.c is enhanced to recognise the AAC LATM header tag
   so that ad_faad.c can know when to search for LATM.


  Dan
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