Signed-off-by: Janne Grunau <janne-libav@jannau.net>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Approximately 3% faster on Cortex-A8.
Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit 7da48fd0)

Approximately 3% faster on Cortex-A8.
Signed-off-by: Mans Rullgard <mans@mansr.com>

Grab from the bitstream in 16-bit chunks instead of 8-bit chunks.
TODO: grab in 32-bit chunks on 64-bit systems.

Originally committed as revision 24783 to svn://svn.ffmpeg.org/ffmpeg/trunk

Create a custom table for VP5/6/8's renorm to avoid depending on H.264's.
Saves one instruction in the arithmetic decoder as well.

Originally committed as revision 24701 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24684 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

Originally committed as revision 24562 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24561 to svn://svn.ffmpeg.org/ffmpeg/trunk

This is a lot more reliable to get cmov rather than trying to trick gcc into
generating it, useful since it's 2% faster overall.

Patch by Eli Friedman <eli.friedman at gmail>

Originally committed as revision 24471 to svn://svn.ffmpeg.org/ffmpeg/trunk

on the huffman tree, instead of traversing the tree in a while loop.

Based on the similar optimization in libvpx's detokenize.c

10% faster at normal bitrates, and 30% faster for high-bitrate intra-only

Originally committed as revision 24468 to svn://svn.ffmpeg.org/ffmpeg/trunk

No difference at the moment, but allows a future branchy variant
of vp56_rac_get_prob to be significantly faster

Originally committed as revision 24467 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24466 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24465 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24412 to svn://svn.ffmpeg.org/ffmpeg/trunk

Saves nothing except a bit of memory/cache now, but will allow future
optimizations.

Originally committed as revision 24411 to svn://svn.ffmpeg.org/ffmpeg/trunk

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

Necessary because of this GCC bug:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44474
To do this, convert some, but not all (!) of the variables in VP56RangeCoder
into local variables.
If we convert c->high into a local variable, gcc gets the stupids and refuses
to use a conditional move for the unpredictable main branch.

TODO: dispense with this bullshit and write an asm version.

Originally committed as revision 23924 to svn://svn.ffmpeg.org/ffmpeg/trunk

This incantation causes gcc 4.3 to generate cmov on x86, a vastly better option
than a completely unpredictable branch.
Hopefully this carries over to newer versions and other CPUs with conditionals.
~5 cycles saved per call on a Core i7.

Originally committed as revision 23921 to svn://svn.ffmpeg.org/ffmpeg/trunk

Negate "bits" to eliminate a negate in cache refilling.

Originally committed as revision 23920 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23915 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

Originally committed as revision 23718 to svn://svn.ffmpeg.org/ffmpeg/trunk

Using macro templates allows the vp[56]_adjust functions to be
inlined instead of called through function pointers.  The new
function pointers enable optimised implementations of the filters.

4% faster VP6 decoding on Cortex-A8.

Originally committed as revision 22992 to svn://svn.ffmpeg.org/ffmpeg/trunk

Passing an explicit filename to this command is only necessary if the
documentation in the @file block refers to a file different from the
one the block resides in.

Originally committed as revision 22921 to svn://svn.ffmpeg.org/ffmpeg/trunk

These macros are redundant.  All uses are replaced with the generic
DECLARE_ALIGNED macro instead.

Originally committed as revision 22233 to svn://svn.ffmpeg.org/ffmpeg/trunk

post-processing, and add a new FF_QSCALE_TYPE_VP56 for this.

Originally committed as revision 21529 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 21377 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19348 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18494 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18352 to svn://svn.ffmpeg.org/ffmpeg/trunk

Otherwise doxygen complains about ambiguous filenames when files exist
under the same name in different subdirectories.

Originally committed as revision 16912 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 16073 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 16069 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 16068 to svn://svn.ffmpeg.org/ffmpeg/trunk