This avoids some unused variable warnings with YASM disabled.

Signed-off-by: Mans Rullgard <mans@mansr.com>

function and rename it to av_get_cpu_flags().

Originally committed as revision 25076 to svn://svn.ffmpeg.org/ffmpeg/trunk

symbols, and move them from libavcodec/avcodec.h to libavutil/cpu.h.

Originally committed as revision 25040 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24909 to svn://svn.ffmpeg.org/ffmpeg/trunk

Lets us do the zeroing in asm instead of C.
Also makes it consistent with the way the regular iDCT code does it.

Originally committed as revision 24668 to svn://svn.ffmpeg.org/ffmpeg/trunk

unchanged bytes) in the horizontal simple loopfilter. This makes the filter
quite a bit faster in itself (~30 cycles less on Core1), probably mostly
because we don't need a complex 4x4 transpose, but only a simple byte
interleave. Also allows using pextrw on SSE4, which speeds up even more
(e.g. 25% faster on Core i7).

Originally committed as revision 24638 to svn://svn.ffmpeg.org/ffmpeg/trunk

Add MMX idct_dc_add4uv function for this case.
~40% faster chroma idct.

Originally committed as revision 24455 to svn://svn.ffmpeg.org/ffmpeg/trunk

Take shortcuts based on statistically common situations.
Add 4-at-a-time idct_dc function (mmx and sse2) since rows of 4 DC-only DCT
blocks are common.
TODO: tie this more directly into the MB mode, since the DC-level transform is
only used for non-splitmv blocks?

Originally committed as revision 24452 to svn://svn.ffmpeg.org/ffmpeg/trunk

~0.3% faster overall.

Originally committed as revision 24448 to svn://svn.ffmpeg.org/ffmpeg/trunk

CPUs supporting it.

Originally committed as revision 24437 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24409 to svn://svn.ffmpeg.org/ffmpeg/trunk

SSSE3 versions, improve SSE2 versions a bit.
SSE2/SSSE3 mbedge h functions are currently broken, so explicitly disable them.

Originally committed as revision 24403 to svn://svn.ffmpeg.org/ffmpeg/trunk

Avoid pextrw, since it's slow on many older CPUs.
Now it doesn't require mmxext either.

Originally committed as revision 24397 to svn://svn.ffmpeg.org/ffmpeg/trunk

and chroma (width=8).

Originally committed as revision 24378 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24377 to svn://svn.ffmpeg.org/ffmpeg/trunk

wrong with it tomorrow or so, then re-submit.

Originally committed as revision 24341 to svn://svn.ffmpeg.org/ffmpeg/trunk

regular MMX code. Examples of this are the Core1 CPU. Instead, set a new flag,
FF_MM_SSE2/3SLOW, which can be checked for particular SSE2/3 functions that
have been checked specifically on such CPUs and are actually faster than
their MMX counterparts.

In addition, use this flag to enable particular VP8 and LPC SSE2 functions
that are faster than their MMX counterparts.

Based on a patch by Loren Merritt <lorenm AT u washington edu>.

Originally committed as revision 24340 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24339 to svn://svn.ffmpeg.org/ffmpeg/trunk

so that it does both U and V planes at the same time. This will have speed
advantages when using SSE2 (or higher) optimizations, since we can do both
the U and V rows together in a single xmm register.

This also renames filter16 to filter16y and filter8 to filter8uv so that it's
more obvious what each function is used for.

Originally committed as revision 24337 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24250 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24029 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24013 to svn://svn.ffmpeg.org/ffmpeg/trunk

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

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

Originally committed as revision 23886 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23878 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23865 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23858 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23857 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23816 to svn://svn.ffmpeg.org/ffmpeg/trunk

- MMXEXT, SSE2 and SSSE3 MC functions
- MMX and SSE4 IDCT dc_add functions

Patch by Jason Garrett-Glaser <darkshikari gmail com> and myself.

Originally committed as revision 23815 to svn://svn.ffmpeg.org/ffmpeg/trunk