Too often it ends up decoding random data into noise without detecting
it (for example after seeking of some MP3 data with oddly often occurring
startcode emulation).
Fixes issue1154.

Originally committed as revision 19302 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19301 to svn://svn.ffmpeg.org/ffmpeg/trunk

stuff at random.

Originally committed as revision 19300 to svn://svn.ffmpeg.org/ffmpeg/trunk

primarily intended for internal use in lavc/lavf, not for use in apps.

Originally committed as revision 19296 to svn://svn.ffmpeg.org/ffmpeg/trunk

header file.

Originally committed as revision 19295 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19294 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19290 to svn://svn.ffmpeg.org/ffmpeg/trunk

enumerated type mixed with another type

Originally committed as revision 19283 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19281 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19280 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19268 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Haruhiko Yamagata, h D yamagata A nifty D com

Originally committed as revision 19266 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19260 to svn://svn.ffmpeg.org/ffmpeg/trunk

First, reverted one was r19239.

Patch by Haruhiko Yamagata, h D yamagata A nifty D com

Originally committed as revision 19258 to svn://svn.ffmpeg.org/ffmpeg/trunk

is used.

Patch by Brian Crowell <($firstname)@fluggo.com>

Originally committed as revision 19257 to svn://svn.ffmpeg.org/ffmpeg/trunk

mv_x < 1 or mv_y < 1.

Originally committed as revision 19255 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19252 to svn://svn.ffmpeg.org/ffmpeg/trunk

is more expressive.

Originally committed as revision 19249 to svn://svn.ffmpeg.org/ffmpeg/trunk

next_frame_offset are not set, because second field has next frame offset set
but not frame_offset, otherwise this wrongly fetch timestamp for the
second field.

Originally committed as revision 19244 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19241 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19240 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Haruhiko Yamagata, h D yamagata A nifty D com

Originally committed as revision 19239 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19238 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Yoshihisa Uchida, yoshihisa D uchida A gmail

Originally committed as revision 19237 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19235 to svn://svn.ffmpeg.org/ffmpeg/trunk

- remove unneeded vlc code < 0 check
- reorder vlc code handling so that the unlikely escape decoding
  part comes last
- move overflow check out of the decode loop
- branchless sign conversion

Originally committed as revision 19234 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19233 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19232 to svn://svn.ffmpeg.org/ffmpeg/trunk

and change default type to float so that the run level
decoding functionality can be shared with wmapro

Originally committed as revision 19231 to svn://svn.ffmpeg.org/ffmpeg/trunk

Based on code by DivX, Inc., heavily changed by Björn Axelsson [gecko acc.umu.se] and me.

Originally committed as revision 19222 to svn://svn.ffmpeg.org/ffmpeg/trunk

should use it, too).

Originally committed as revision 19221 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19218 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19216 to svn://svn.ffmpeg.org/ffmpeg/trunk

These are only supposed to be called once per row, not once per macroblock.
~1.5% faster according to oprofile.

Originally committed as revision 19213 to svn://svn.ffmpeg.org/ffmpeg/trunk

The threads' contexts and rbsp_buffers were not freed at the end
of decoding.

Fixes issue 1581

Originally committed as revision 19207 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19206 to svn://svn.ffmpeg.org/ffmpeg/trunk

~8% faster VC-1 decoding.
Possible future optimization: clear blocks after use instead of before, and for
DC-only blocks, only clear the DC coefficient.

Originally committed as revision 19205 to svn://svn.ffmpeg.org/ffmpeg/trunk

Includes mmx2 asm for the various functions.
Note that the actual idct still does not have an x86 SIMD implemtation.
For wmv3 files using regular idct, the decoder just falls back to simple_idct,
since simple_idct_dc doesn't exist (yet).

Originally committed as revision 19204 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19203 to svn://svn.ffmpeg.org/ffmpeg/trunk

continuing in 32-bit quantities.
Fixes crash observed on sparc during FATE mlp test.
Patch by Ramiro.

Originally committed as revision 19200 to svn://svn.ffmpeg.org/ffmpeg/trunk