This is the correct solution to the warning "fixed" in the previous
commit.

Originally committed as revision 24367 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/vp8.c:892: warning: suggest explicit braces to avoid ambiguous `else'

Originally committed as revision 24366 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

immediately after a mb row is decoded

Originally committed as revision 24252 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24251 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24110 to svn://svn.ffmpeg.org/ffmpeg/trunk

filter to match the simple loop filter

Originally committed as revision 24010 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23979 to svn://svn.ffmpeg.org/ffmpeg/trunk

16 subblocks (since we no longer need that), which should also lead to a
minor speedup.

Originally committed as revision 23854 to svn://svn.ffmpeg.org/ffmpeg/trunk

we apply them as 16x8/8x16/8x8 subblocks where possible. Since this allows
us to use width=8/16 instead of width=4 MC functions, we can now take more
advantage of SSE2/SSSE3 optimizations, leading to a total speedup for splitMV
filter of about 10%.

Originally committed as revision 23853 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23813 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23809 to svn://svn.ffmpeg.org/ffmpeg/trunk

This isn't useful for the C functions, but will allow re-using H and V functions
for HV functions without adding separate H and V wrappers.

Originally committed as revision 23782 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23765 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23745 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by David Conrad <lessen42 gmail com> and myself.

Originally committed as revision 23719 to svn://svn.ffmpeg.org/ffmpeg/trunk