Originally committed as revision 14081 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 13759 to svn://svn.ffmpeg.org/ffmpeg/trunk

patch by Stefano Sabatini, stefano.sabatini-lala poste it

Originally committed as revision 13009 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12525 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12402 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12317 to svn://svn.ffmpeg.org/ffmpeg/trunk

through a context variable as this is simpler and i think also faster, but
the return value of functions could be used instead of course.
The code also ensures as a side effect that the AC decoder state does not
become invalid.
This fixes all known crashes. And outputs nothing in case of an error instead
of random noise.

Originally committed as revision 12316 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12315 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 11713 to svn://svn.ffmpeg.org/ffmpeg/trunk

cast to correct type, fix warning: apedec.c:859: warning: passing argument 1 of 's->dsp.bswap_buf' from incompatible pointer type

Originally committed as revision 11679 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 11125 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 11122 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 10484 to svn://svn.ffmpeg.org/ffmpeg/trunk