This moves the H264-specific functions from DSPContext to the new
H264DSPContext.  The code is made conditional on CONFIG_H264DSP
which is set by the codecs requiring it.

The qpel and chroma MC functions are not moved as these are used by
non-h264 code.

Originally committed as revision 22565 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22564 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22560 to svn://svn.ffmpeg.org/ffmpeg/trunk

This fixes libavcodec/h264.h:1100: warning: integer overflow in expression

Originally committed as revision 22558 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22556 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22554 to svn://svn.ffmpeg.org/ffmpeg/trunk

this seems to improve RD performance.

Originally committed as revision 22550 to svn://svn.ffmpeg.org/ffmpeg/trunk

need it in *thread.c.

Originally committed as revision 22544 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22533 to svn://svn.ffmpeg.org/ffmpeg/trunk

The init function is only compiled if MMX is enabled, the call
must use the same condition.

Originally committed as revision 22531 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22527 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22525 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22524 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22523 to svn://svn.ffmpeg.org/ffmpeg/trunk

This moves the DWT functions from snow.c and dsputil.c to a file of
their own.  A new struct, DWTContext, holds the function pointers
previously part of DSPContext.

Originally committed as revision 22522 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22520 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22517 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22516 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22515 to svn://svn.ffmpeg.org/ffmpeg/trunk

avctx->get_buffer() in case of error, rather than AVERROR_UNKNOWN
which is deprecated, and mark AVERROR_UNKNOWN for deletion at the next
major bump.

Originally committed as revision 22512 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22511 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22510 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

libavutil/error.h.

Error code definitions and handling code belong to libavutil, where
they can be shared by all the libav* libraries.

See the thread:
Subject: [FFmpeg-devel] [PATCH] Move error codes definitions from lavc to lavu
Date: Sun, 19 Jul 2009 12:09:16 +0200

Originally committed as revision 22501 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

Originally committed as revision 22489 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22485 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22484 to svn://svn.ffmpeg.org/ffmpeg/trunk

Previously, the area of a lost slice would be left at the slice number of the previous
frame which could occasionally match the number of the next slice and thus a non existing
slice could have been used for prediction leading to additional decoding errors in otherwise
undamaged slices.

Originally committed as revision 22483 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22480 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22479 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22470 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22466 to svn://svn.ffmpeg.org/ffmpeg/trunk

w53_32_c() and w97_32_c() are defined as stubs when snow encoder is
disabled.  In this case, those functions are not referenced at all
and do thus not need to be defined.

Originally committed as revision 22448 to svn://svn.ffmpeg.org/ffmpeg/trunk

These casts are correct and safe.  The pointers are guaranteed to
have proper alignment, and aliasing is not a problem with character
types.

Originally committed as revision 22446 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22441 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22440 to svn://svn.ffmpeg.org/ffmpeg/trunk

This fixes compilation on mingw32ce

Originally committed as revision 22437 to svn://svn.ffmpeg.org/ffmpeg/trunk

as i did nt find a limit in the spec)
This should stop cavlc_decode_residual() on a zero bitstream

Originally committed as revision 22429 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22419 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 22415 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Zhou Zongyi, zhouzy A os D pku D edu D cn

Originally committed as revision 22414 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22413 to svn://svn.ffmpeg.org/ffmpeg/trunk