Fixed issue417.

Originally committed as revision 13405 to svn://svn.ffmpeg.org/ffmpeg/trunk

This is more efficient as in practice the check is redundant most of the
time. Callers which do not know if enough data is available have to check
it with av_fifo_size(). Doing the check in *read() means the caller has
no choice to skip the check when its known to be redundant.
Also the return value was never documented in a public header so
changing it should not break the API. Besides this fixes the case where
read() failed on a 100% full fifo.

Originally committed as revision 13404 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 13251 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 13250 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 13096 to svn://svn.ffmpeg.org/ffmpeg/trunk

typedef x86_reg as the appropriate size and use it instead.

Originally committed as revision 13081 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 13069 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 13068 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 13066 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 13043 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12982 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Stefano Sabatini stefanodotsabatini-lalaatpostedotit

Originally committed as revision 12934 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12910 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12889 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12885 to svn://svn.ffmpeg.org/ffmpeg/trunk

patch by Stefano Sabatini: stefano sabatini-lala poste it

Originally committed as revision 12790 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12774 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Björn Axelsson: bjorn axelsson intinor se
Original thread: [FFmpeg-devel] [RFC][PATCH] av_fifo_write_from_bytestream()
Date: 04/03/2008 12:14 PM

Originally committed as revision 12773 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12760 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12755 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12677 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12676 to svn://svn.ffmpeg.org/ffmpeg/trunk

so that LOCAL_MANGLE can be used without EXTERN_PREFIX.
patch by Alexander Strange, astrange ithinksw com

Originally committed as revision 12558 to svn://svn.ffmpeg.org/ffmpeg/trunk

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

Originally committed as revision 12502 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12501 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12500 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12499 to svn://svn.ffmpeg.org/ffmpeg/trunk

                in libavutil.
Fix a compilation failure in r12489.

Originally committed as revision 12498 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12496 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12494 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12490 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Zuxy Meng: zuxy meng gmail com
Original thread:
[FFmpeg-devel] [PATCH] Pure, const and malloc attributes to libavutil
Date: 03/18/2008 6:09 AM

Originally committed as revision 12489 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12484 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12481 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12471 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12470 to svn://svn.ffmpeg.org/ffmpeg/trunk

Allows compiling a 64 bit FFmpeg on Mac OS X without using --disable-mmx.
patch by İsmail Dönmez  ismail namtrac org

Originally committed as revision 12468 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12435 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12433 to svn://svn.ffmpeg.org/ffmpeg/trunk