maybe this should be moved to libavutil ...

Originally committed as revision 5782 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 5781 to svn://svn.ffmpeg.org/ffmpeg/trunk

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fix playback of theora.ogg on mphq patch by (matthieu castet %% castet dat matthieu ot free dat fr %%)

Originally committed as revision 5776 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 5775 to svn://svn.ffmpeg.org/ffmpeg/trunk

replace *_dequant (2 intra, 1 inter) by qmat (3 intra, 3 inter) (needed for theora according to spec)

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this change is messy as whoever wrote the original code copied the GetBitContext instead of passing a pointer to it which has to be fixed for the above thing

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available to external programs as well.
Also make more things available to external programs like GET_UTF8, MKTAG etc.

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calculate all coefficients for several orders during cholesky factorization, the resulting coefficients are not strictly optimal though as there is a small difference in the autocorrelation matrixes which is ignored for the smaller orders

Originally committed as revision 5758 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 5757 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 5756 to svn://svn.ffmpeg.org/ffmpeg/trunk

based on patch by Víctor Paesa wzrlpy at arsystel com

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and similar since $libdir contained $prefix, which contained $(DESTDIR)..

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Originally committed as revision 5748 to svn://svn.ffmpeg.org/ffmpeg/trunk

  this will find the coefficients which minimize the sum of the squared errors,
  levinson-durbin recursion OTOH is only strictly correct if the autocorrelation matrix is a
  toeplitz matrix which it is only if the blocksize is infinite, this is also why applying
  a window (like the welch winodw we currently use) improves the lpc coefficients generated
  by levinson-durbin recursion ...

optionally (use_lpc>2) support iterative linear least abs() solver using cholesky
  factorization with adjusted weights in each iteration

compression gain for both is small, and multiple passes are of course dead slow

Originally committed as revision 5747 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 5746 to svn://svn.ffmpeg.org/ffmpeg/trunk

Removes one of the last FIXMEs from the build system.

Originally committed as revision 5745 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 5744 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 5743 to svn://svn.ffmpeg.org/ffmpeg/trunk