On OS X, this struct is only available if _DARWIN_C_SOURCE is defined,
when we have _POSIX_C_SOURCE defined. This allows the struct to be found,
enabling proper IPv6 multicast functionality on OS X.

The define is already set within the file that uses the struct. Setting it
only for this test in configure avoids having to keep it defined for the
whole build.

Originally committed as revision 25370 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25369 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25368 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25367 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25366 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25365 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25364 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25363 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25362 to svn://svn.ffmpeg.org/ffmpeg/trunk

prediction (plus some with different rounding for svq3/rv40). Speedup (for
SSSE3) about ~6-fold, 3.6% faster overall with cathedral sample.

Originally committed as revision 25361 to svn://svn.ffmpeg.org/ffmpeg/trunk

If multiple stsd atoms are parsed for the same stream, the old
extradata would be leaked.

Originally committed as revision 25360 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25359 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25358 to svn://svn.ffmpeg.org/ffmpeg/trunk

patch by Anton Khirnov  anton _at_ khirnov _dot_ net

Originally committed as revision 25357 to svn://svn.ffmpeg.org/ffmpeg/trunk

This makes e.g. --disable-everything --enable-demuxer=rtsp actually
enable the rtsp demuxer and everything else that is needed.

Originally committed as revision 25356 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25355 to svn://svn.ffmpeg.org/ffmpeg/trunk

This makes the code dependencies correct. Previously, the SDP demuxer
wasn't buildable on its own.

This also reverts rev 25343.

Originally committed as revision 25354 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25353 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25352 to svn://svn.ffmpeg.org/ffmpeg/trunk

This is required in order to get the IP_MULTICAST_TTL define.

Originally committed as revision 25351 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25350 to svn://svn.ffmpeg.org/ffmpeg/trunk

prevents a read-after-close-induced segfault later. Fixes issue 2266.

Patch by qrtt1 <chingyichan dot tw gmail com>.

Originally committed as revision 25349 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25348 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25347 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25346 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25345 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25344 to svn://svn.ffmpeg.org/ffmpeg/trunk

They reside within a large CONFIG_RTSP_DEMUXER block and are thus pointless.

Originally committed as revision 25343 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25342 to svn://svn.ffmpeg.org/ffmpeg/trunk

patch by Anton Khirnov   anton _at_ khirnov _dot_ net

Originally committed as revision 25341 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25340 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25339 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25338 to svn://svn.ffmpeg.org/ffmpeg/trunk

This preempts issues with av_cmp_q(0/0, X)

Originally committed as revision 25337 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25336 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25335 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25334 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25333 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25332 to svn://svn.ffmpeg.org/ffmpeg/trunk

Fixes compilation with clang's builtin assembler

Patch by İsmail Dönmez, ismail at namtrac dot org

Originally committed as revision 25331 to svn://svn.ffmpeg.org/ffmpeg/trunk