Originally committed as revision 21800 to svn://svn.ffmpeg.org/ffmpeg/trunk

3.6% faster on Elephants_Dream_HD-q7-aq7.ogg on my penryn

Originally committed as revision 21781 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 21780 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 21779 to svn://svn.ffmpeg.org/ffmpeg/trunk

3% faster on Elephants_Dream_HD-q7-aq7.ogg on my penryn

Originally committed as revision 21778 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 21777 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 21776 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 21775 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 21774 to svn://svn.ffmpeg.org/ffmpeg/trunk

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

Originally committed as revision 20896 to svn://svn.ffmpeg.org/ffmpeg/trunk

Inspired by guidance from Dark Shikari. On a Core 2 Duo 2.0 GHz, this
change decodes the 10-minute Big Buck Bunny 1080p short about 2 seconds
faster.

Originally committed as revision 20895 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 20752 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Dark Shikari

Originally committed as revision 20751 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Dark Shikari

Originally committed as revision 20750 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Dark Shikari

Originally committed as revision 20749 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 20748 to svn://svn.ffmpeg.org/ffmpeg/trunk

Faster checks in reverse_dc_prediction.
Simplified deblocking checks.
Check transform==15 first, since it's more common than 13.

Originally committed as revision 20747 to svn://svn.ffmpeg.org/ffmpeg/trunk

on their grouping, create one loop that indexes into a table of AC VLC
tables.

There is also a small optimization here: Do not call unpack_vlcs()
if there are no fragments in the list with outstanding coefficients.
My profiling indicates that this can save upwards of 1 million
dezicycles per frame throughout the course of unpack_dct_coeffs().

Originally committed as revision 20699 to svn://svn.ffmpeg.org/ffmpeg/trunk

outstanding coefficients yet to be decoded from the bitstream. Once a
fragment reaches end-of-block, remove it from this new list. This change
makes the VP3/Theora entropy decode process dramatically faster due to
not having to iterate incessantly over fragments which have already been
fully decoded.

Originally committed as revision 20698 to svn://svn.ffmpeg.org/ffmpeg/trunk

Based on 28_theora_malloc_checks.patch from the Google Chrome team.

Originally committed as revision 20008 to svn://svn.ffmpeg.org/ffmpeg/trunk

22_fix_theora_frag_fencepost.patch by chrome

Originally committed as revision 19995 to svn://svn.ffmpeg.org/ffmpeg/trunk

18_fix_theora_header_bit_len.patch by chrome

Originally committed as revision 19993 to svn://svn.ffmpeg.org/ffmpeg/trunk

branch and save around 45k-55k dezicycles per function run.

Originally committed as revision 19974 to svn://svn.ffmpeg.org/ffmpeg/trunk

the DC coefficients. This has a greater probability of leveraging the
coefficients while they are still cached.

When testing with the Big Buck Bunny 1080p video, I consistently saw
improvements of 500k-600k dezicycles per run (through
reverse_dc_prediction()) thanks to this move.

Originally committed as revision 19966 to svn://svn.ffmpeg.org/ffmpeg/trunk

main (heavily iterated) loop.

Originally committed as revision 19934 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19779 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19771 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19499 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19357 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19356 to svn://svn.ffmpeg.org/ffmpeg/trunk

Otherwise this will crash during decoding because the vlc tables are NULL.
Partially fixes ogv/smclock.ogv.1.101.ogv from issue 1240.

Originally committed as revision 19355 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19351 to svn://svn.ffmpeg.org/ffmpeg/trunk

of only up to 64. 127 is the maximum value allowed by the theora specification.

Originally committed as revision 19350 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19107 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18986 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18898 to svn://svn.ffmpeg.org/ffmpeg/trunk

This fixes ogg/theora on ARM (more generally the A32 bitstream reader)

Originally committed as revision 18819 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18795 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18731 to svn://svn.ffmpeg.org/ffmpeg/trunk