[vdr] 5th technology preview - DVD subtiles & navigation

[Andreas Schultz <aschultz@cs.uni-magdeburg.de>]

Hi all,

I have a new experimantal version of the DVD navigation patch.

http://www.cs.uni-magdeburg.de/~aschultz/dvd/vdr-0.99pre1-nav5.diff.gz
http://www.cs.uni-magdeburg.de/~aschultz/dvd/vdr-0.99pre1-nav4-nav5.diff.gz


changes to -nav3/4:
    - improved support for still picture based menues
    - audio track and subtitles selection through DVD menue works
    - started some cleanup in cDVDplayBuffer (and introduced more ugly
      code, that needs cleaning)

known issues/todo:
    - video/audio distortions at the end of menu loops
    - audio track and subtitles selction menu access
      not fully implemented
    - user operations are not surpressed as directed by the DVD (this
      especialy applies to surpressing chapter skip's in menues)

The menue spu decoding has been improved and should now work in most 
cases. However, the OSD usage will be changed as soon as Klaus has 
finisched some changes in cDvbOsd.

I have observed audio distortions with some audio track / subtitle 
combinations (e.g., playing "The Matrix" with English audio and German 
subtitles distorts audio rather badly at the beginning).
This is most probably due to some kind of memory corruption caused by 
the SPU decoder. I will investigate this further, reports on when and 
where this happens are welcome.

BUG reporting guidelines:

Before reporting problems with specific DVD's, recompile VDR with
'#define TRACE' set in decoder.c and include the output of vdr in your 
report. Without that information, it is almost impossible to identify 
the problem.


Have fun

        Andreas