It's more readable and less prone to breakage.

Signed-off-by: Diego Biurrun <diego@biurrun.de>

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

With negative stride, the start of the edge_emu buffer should be pointing to
the last line, not the end of the buffer.
With positive stride, pointing to the end of the buffer was completely wrong.

Also remove qscale_table code; this didn't make sense anyways as VP3 doesn't
use an MPEG-like quantizer scale.

It is pretty hopeless that other considerable projects will adopt
libavutil alone in other projects. Projects that need small footprint
are better off with more specialized libraries such as gnulib or rather
just copy the necessary parts that they need. With this in mind, nobody
is helped by having libavutil and libavcore split. In order to ease
maintenance inside and around FFmpeg and to reduce confusion where to
put common code, avcore's functionality is merged (back) to avutil.

Signed-off-by: Reinhard Tartler <siretart@tauware.de>

Decode times for big_buck_bunny_720p_stereo:

1 thread:
real    1m14.227s
user    1m13.104s
sys     0m1.108s

2 threads: (33% faster)
real    0m49.329s
user    1m33.735s
sys     0m1.834s

3 threads: (44% faster)
real    0m41.593s
user    1m44.884s
sys     0m1.967s

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

None of these symbols should be accessed directly, so declare them as
hidden.

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

Originally committed as revision 26398 to svn://svn.ffmpeg.org/ffmpeg/trunk

Reading 7 bits as an unsigned int can't result in a value exceeding 127.
Accordingly, remove error message (as it'll never be reached).

Originally committed as revision 25575 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25574 to svn://svn.ffmpeg.org/ffmpeg/trunk

Bug caused by the fact that get_bits(gb, 0) is undefined.
Doesn't affect any streams generated by the official Theora encoder, but such
streams are nevertheless valid.

Fixes decoding of CELT-933dd833-nmr-bandt.ogv.

Originally committed as revision 25573 to svn://svn.ffmpeg.org/ffmpeg/trunk

Fixes a black line in non-swapped, non-mod-16-height Theora videos
when vp3_draw_horiz_band is used.

Originally committed as revision 25073 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25058 to svn://svn.ffmpeg.org/ffmpeg/trunk

when the video uses 4:2:2 instead of 4:2:0 coding.

Originally committed as revision 25052 to svn://svn.ffmpeg.org/ffmpeg/trunk

that result in overdrawing areas again and again if s->flipped_image
is false.

Originally committed as revision 25051 to svn://svn.ffmpeg.org/ffmpeg/trunk

via the context.

Originally committed as revision 25050 to svn://svn.ffmpeg.org/ffmpeg/trunk

av_check_image_size() instead.

Originally committed as revision 24711 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23904 to svn://svn.ffmpeg.org/ffmpeg/trunk

for 4:2:2 and 4:4:4 formats.

Originally committed as revision 23537 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23346 to svn://svn.ffmpeg.org/ffmpeg/trunk

exactly ends the remaining blocks.

Originally committed as revision 23304 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22931 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

Originally committed as revision 22899 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22898 to svn://svn.ffmpeg.org/ffmpeg/trunk

Fixes issue1834

Originally committed as revision 22897 to svn://svn.ffmpeg.org/ffmpeg/trunk

2-4% faster overall decode

Originally committed as revision 22896 to svn://svn.ffmpeg.org/ffmpeg/trunk

.5% slower to fix some crashes on invalid streams

Originally committed as revision 22893 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22892 to svn://svn.ffmpeg.org/ffmpeg/trunk

is deprecated and will be dropped at the next major bump.

Originally committed as revision 22735 to svn://svn.ffmpeg.org/ffmpeg/trunk

1.5% faster overall decode on my penryn

Originally committed as revision 22504 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22500 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22499 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22498 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22497 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22496 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22495 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22494 to svn://svn.ffmpeg.org/ffmpeg/trunk

I couldn't measure it to be slower for normal interframe videos.
For the worst case, high-bitrate intra-only videos, it can be 0.7% slower.

Originally committed as revision 22416 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22377 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22361 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22360 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22359 to svn://svn.ffmpeg.org/ffmpeg/trunk