This moves some groups of tests for single codecs to separate files,
and adds shorthands for running all tests in a group.

Originally committed as revision 24697 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24696 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24695 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24694 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24693 to svn://svn.ffmpeg.org/ffmpeg/trunk

This reverts rev 24674 - the VP8 decoder actually depends on cabac.o.
vp8.c includes vp56.h, which includes cabac.h, which has inline functions
that reference tables from cabac.c.

This fixes compilation with --disable-everything --enable-decoder=vp8.

Originally committed as revision 24692 to svn://svn.ffmpeg.org/ffmpeg/trunk

Avoids a function call in the case of empty DCT blocks (most of the time).

Originally committed as revision 24691 to svn://svn.ffmpeg.org/ffmpeg/trunk

Accidentally committed some timing code.

Originally committed as revision 24690 to svn://svn.ffmpeg.org/ffmpeg/trunk

Slightly faster.

Originally committed as revision 24689 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24688 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24687 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24686 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24685 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24684 to svn://svn.ffmpeg.org/ffmpeg/trunk

1-2 clocks faster.

Originally committed as revision 24683 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24682 to svn://svn.ffmpeg.org/ffmpeg/trunk

~34% faster partition type decoding.

Originally committed as revision 24681 to svn://svn.ffmpeg.org/ffmpeg/trunk

Much faster splitmv mode decoding.

Originally committed as revision 24680 to svn://svn.ffmpeg.org/ffmpeg/trunk

~50% faster MB mode decoding, plus eliminate a costly switch.

Originally committed as revision 24679 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24678 to svn://svn.ffmpeg.org/ffmpeg/trunk

Always inline the arithmetic coder, except in the case of header-parsing stuff,
in which case don't inline it at all to save code size.

Originally committed as revision 24677 to svn://svn.ffmpeg.org/ffmpeg/trunk

This is especially important because classifs can be very large.

Originally committed as revision 24676 to svn://svn.ffmpeg.org/ffmpeg/trunk

If sizeof uint_fast8_t > 1 and sizeof size_t <= 4, the expression that mallocs
classifs  is susceptible to integer overflow.

Originally committed as revision 24675 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24674 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24673 to svn://svn.ffmpeg.org/ffmpeg/trunk

It is already selected through the H264DSP dependency of VP8.

Originally committed as revision 24672 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24671 to svn://svn.ffmpeg.org/ffmpeg/trunk

A lot of the time the DC block is empty: don't do the WHT in this case.
A lot of the rest of the time, there's only one coefficient: make a special
DC-only transform for that case.
When the block is empty, don't incorrectly mark luma DCT blocks as having DC
coefficients.

Originally committed as revision 24670 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24669 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

This is required when cross-testing on dos-like targets.

Originally committed as revision 24667 to svn://svn.ffmpeg.org/ffmpeg/trunk

Without this flag -Wall generates warnings that nobody wants to see fixed or
worked around. Disabling those warnings is thus the best solution.

Originally committed as revision 24666 to svn://svn.ffmpeg.org/ffmpeg/trunk

Increase readability and robustness, as the test result is not going
to differ if the order of the pixfmts codes changes.

Originally committed as revision 24665 to svn://svn.ffmpeg.org/ffmpeg/trunk

inter-frame behaviour unchanged.

Originally committed as revision 24664 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24663 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24662 to svn://svn.ffmpeg.org/ffmpeg/trunk

/**\u2264 => /**<

Originally committed as revision 24661 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24660 to svn://svn.ffmpeg.org/ffmpeg/trunk

~1.5% faster decode_block_coeffs

Originally committed as revision 24659 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24658 to svn://svn.ffmpeg.org/ffmpeg/trunk