Also make some small changes to saturation order of 4-tap SSSE3 MC to fix a
non-bitexactness bug.

Patch mostly by Eli Friedman <eli.friedman AT gmail DOT com>.

Originally committed as revision 23965 to svn://svn.ffmpeg.org/ffmpeg/trunk

Check for GNU assembler only when asm is enabled.  Show a warning for
ppc/altivec only, and fail on ARM.

Originally committed as revision 23964 to svn://svn.ffmpeg.org/ffmpeg/trunk

Make sure that the *_tablegen.h header is listed in the dependencies, but
filter it out in the compile line.

Originally committed as revision 23963 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23962 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23961 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23960 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Loren Merritt

Originally committed as revision 23959 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23958 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch (mostly) by Loren Merritt

Originally committed as revision 23957 to svn://svn.ffmpeg.org/ffmpeg/trunk

1.8x faster than altivec radix-2 on a G4
8% faster vorbis decoding

Patch (mostly) by Loren Merritt

Originally committed as revision 23956 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23955 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23954 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23953 to svn://svn.ffmpeg.org/ffmpeg/trunk

This checks which assembler syntax is supported and defines macros
for register names accordingly.

Originally committed as revision 23952 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23951 to svn://svn.ffmpeg.org/ffmpeg/trunk

Also put compute_antialias_integer() under !CONFIG_FLOAT and change
forward declarations to declare only the relevant one of these.

Fixes warnings about unused functions and pointer type mismatches.

Originally committed as revision 23950 to svn://svn.ffmpeg.org/ffmpeg/trunk

The mmx code is floating-point only, and this function does not know
from which decoder it is called.  Without this change, the integer
decoder only "works" because the size of the context struct is smaller
in this case, and the mmx init function writes the function pointer
outside the allocated context.

Fixes issue 2054.

Originally committed as revision 23949 to svn://svn.ffmpeg.org/ffmpeg/trunk

rectalogic at rectalogic dot com
Fixes issue #1754

Originally committed as revision 23948 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23947 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23946 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23945 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23944 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23943 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Josh Allmann, joshua dot allmann at gmail

Originally committed as revision 23942 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Josh Allmann, joshua dot allmann at gmail

Originally committed as revision 23941 to svn://svn.ffmpeg.org/ffmpeg/trunk

Avoid a compile-time dependency of the pad filter on libavcodec.

Originally committed as revision 23940 to svn://svn.ffmpeg.org/ffmpeg/trunk

prototype and also always call them with exactly those arguments.
The previous way seems to have worked on all supported platforms, however
it was not strictly valid C and would crash e.g. with a compiler that
uses stdcall by default.
Also avoids warnings if -Wstrict-prototypes is used.

Originally committed as revision 23939 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23938 to svn://svn.ffmpeg.org/ffmpeg/trunk

they now also depends on cabac.o for ff_h264_norm_shift

Originally committed as revision 23937 to svn://svn.ffmpeg.org/ffmpeg/trunk

warning: the address of 'number' will always evaluate as 'true'
patch by Eli Friedman   eli _dot_ friedman _at_ gmail _dot_ com

Originally committed as revision 23936 to svn://svn.ffmpeg.org/ffmpeg/trunk

The ADTS output files are not explicitly signaled because the format
does not support explicit signalling.

Originally committed as revision 23935 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23934 to svn://svn.ffmpeg.org/ffmpeg/trunk

This allocates per-thread copies of some MpegEncContext.ac_val which
is used concurrently from the encoding threads.

Originally committed as revision 23933 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23932 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23931 to svn://svn.ffmpeg.org/ffmpeg/trunk

If both /dev/random and /dev/urandom failed to return data, an
uninitialised value might be returned.  Since most systems have a
non-blocking /dev/urandom or have /dev/random with similar properties,
the chance of blocking is minimal, and the alternative of returning
non-random data is worse.

Originally committed as revision 23930 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23929 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23928 to svn://svn.ffmpeg.org/ffmpeg/trunk

Whose idea was it to have a CPU that didn't SIGILL on an invalid instruction?

Originally committed as revision 23927 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Rafaël Carré (rafael <dot> carre <at> gmail).

Originally committed as revision 23926 to svn://svn.ffmpeg.org/ffmpeg/trunk