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56 Commits

Author SHA1 Message Date
Justin Ruggles
f1f373c220 fix and simplify frame size check and reencoding in verbatim mode 
Originally committed as revision 14811 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-17 16:10:46 +00:00
Justin Ruggles
38c1a5c4d9 update my email address to one which does not depend on my service provider 
Originally committed as revision 14797 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-16 22:42:59 +00:00
Justin Ruggles
9045f5e72d cosmetics: adjust line breaks and vertical alignment 
Originally committed as revision 14795 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-16 21:32:03 +00:00
Justin Ruggles
56c07e2989 use limited range of lpc orders when quantizing coefficients 
Originally committed as revision 14794 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-16 21:24:06 +00:00
Ramiro Polla
c50da3ad6c flacenc, lpc: Move LPC code from flacenc.c to new lpc.[ch] files. 
Originally committed as revision 14790 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-16 17:18:20 +00:00
Ramiro Polla
51c796d012 flacenc: Allow more flexible shift calculation in LPC. 
Originally committed as revision 14789 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-16 17:03:57 +00:00
Peter Ross
fd76c37fd9 Modify all codecs to report their supported input and output sample format(s). 
Originally committed as revision 14482 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-31 10:47:31 +00:00
Ramiro Polla
6647ab80e3 bitstream: move put_sbits() from flacenc.c to bitstream.h and use it 
throughout libavcodec.

Originally committed as revision 14204 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-13 14:27:48 +00:00
Stefano Sabatini
fe4bf37455 Make AVCodec long_names definition conditional depending on CONFIG_SMALL. 
Originally committed as revision 13759 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-06-12 21:50:13 +00:00
Diego Biurrun
245976da2a Use full path for #includes from another directory. 
Originally committed as revision 13098 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-09 11:56:36 +00:00
Stefano Sabatini
d5202e4fda Add long names to many AVCodec declarations. 
patch by Stefano Sabatini, stefano.sabatini-lala poste it

Originally committed as revision 13005 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-04-27 10:52:44 +00:00
Justin Ruggles
42ceeb5f3c remove redundant context variable 
Originally committed as revision 12642 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-03-31 00:29:52 +00:00
Justin Ruggles
fe790f89e8 Use 15-bit LPC precision by default. This generally gives better compression 
results. Also update Ogg regression test.

Originally committed as revision 12630 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-03-30 16:01:10 +00:00
Zuxy Meng
98a6fff98c Apply 'cold' attribute to init/uninit functions in libavcodec 
Originally committed as revision 12525 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-03-21 03:11:20 +00:00
Michael Niedermayer
a4195e68b6 assert() and note about odd len. 
Originally committed as revision 11884 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-02-09 14:45:36 +00:00
Michael Niedermayer
fa4ed8c10a optimize apply_welch_window() 
Originally committed as revision 11881 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-02-09 03:42:48 +00:00
Aurelien Jacobs
3abe5fbdc4 improve CRC API 
- don't export any global var
 - provide either generated or hardcoded tables

Originally committed as revision 11409 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-01-04 23:09:58 +00:00
Loren Merritt
90f0344165 remove a branch from an inner loop. 
1% faster flac encoding.

Originally committed as revision 10865 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-10-27 13:39:19 +00:00
Loren Merritt
286127c5dd div -> mul 
Originally committed as revision 10630 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-10-01 05:56:30 +00:00
Loren Merritt
b8de342919 simplify lpc 
Originally committed as revision 10628 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-09-30 03:36:13 +00:00
Loren Merritt
bfdd5bc1f1 unroll finite differences to avoid swapping registers. 
1.5x faster encode_residual_fixed().
overall flac encoding: 3% faster at compression_levels 0-2.

Originally committed as revision 10625 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-09-29 23:44:34 +00:00
Loren Merritt
a309dce75f encode_residual_fixed(): replace FIR with finite differences. 
4x faster order 2, 3.5x order 3, 3x order 4.
overall flac encoding: 35% faster at compression_levels 0-2, no effect at higher levels.

Originally committed as revision 10624 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-09-29 23:21:57 +00:00
Loren Merritt
6810b93a81 sse2 version of compute_autocorr(). 
4x faster than c (somehow, even though doubles only allow 2x simd).
overal flac encoding: 15-50% faster on core2, 4-11% on k8, 3-13% on p4.

Originally committed as revision 10621 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-09-29 22:31:18 +00:00
Loren Merritt
19b9c7cc66 was computing one more autocorrelation coefficient that was actually used 
Originally committed as revision 10613 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-09-29 07:43:52 +00:00
Loren Merritt
14bd2a9f25 replace brute force find_optimal_param() with a closed-form solution. 
overall flac encoding: 4-15% faster.
output is not identical to the previous algorithm due to occasional rounding
errors, but the differece is less than .0005% bitrate.

Originally committed as revision 10612 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-09-29 05:41:27 +00:00
Loren Merritt
f6215b1b06 gcc isn't smart enough to factor out duplicate stores 
Originally committed as revision 10611 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-09-29 01:54:25 +00:00
Loren Merritt
28e968c4a4 2.5x faster compute_autocorr() 
overall flac encoding: 15-50% faster on core2, 8-30% on k8, 2-20% on p4 (depending on compression_level)

Originally committed as revision 10606 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-09-28 06:06:18 +00:00
Loren Merritt
dc44d4ad64 unroll encode_residual_lpc(). speedup varies between 1.2x and 1.8x depending on lpc order. 
Originally committed as revision 10596 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-09-27 02:42:00 +00:00
Loren Merritt
0d2caa37c5 oops, potential overflow on really large blocks 
Originally committed as revision 10587 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-09-25 23:34:48 +00:00
Loren Merritt
f74471e043 optimize encode_residual_lpc() 
37%/45%/90% faster on core2/k8/p4, making flac encoding overall 15%/17%/40% faster at compression_level>=8 (less at low levels).

Originally committed as revision 10585 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-09-25 23:30:29 +00:00
Reimar Döffinger
f66e4f5f9e Add av_ prefix to clip functions 
Originally committed as revision 8122 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-02-25 10:27:12 +00:00
Zuxy Meng
360932f76d Fix ASF format parser's broken UTF-16 string handling 
1. Add a PUT_UTF8 macro to common.h; code borrowed from libavcodec/flacenc.c.
2. Make use of the macro in flacenc.c
Patch by Zuxy Meng % zuxy P meng A gmail P com %
Original thread:
Date: Nov 5, 2006 9:56 AM
Subject: [Ffmpeg-devel] PUT_UTF8 & asf format enhancement

Originally committed as revision 6911 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-11-06 10:32:48 +00:00
Diego Biurrun
c26abfa541 Rename ABS macro to FFABS. 
Originally committed as revision 6666 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-10-11 23:17:58 +00:00
Diego Biurrun
b78e7197a8 Change license headers to say 'FFmpeg' instead of 'this program/this library' 
and fix GPL/LGPL version mismatches.

Originally committed as revision 6577 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-10-07 15:30:46 +00:00
Justin Ruggles
e1bbc0321c cosmetic change to adjust alignment. 
Originally committed as revision 5767 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-07-16 17:08:25 +00:00
Justin Ruggles
5f3acd9ec9 Modify preset compression levels to utilize log search. 
Originally committed as revision 5766 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-07-16 17:04:54 +00:00
Michael Niedermayer
dbb45a3bb7 log prediction order search method 
Originally committed as revision 5763 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-07-16 15:46:45 +00:00
Justin Ruggles
26053bdcc8 Add lpc order search. This creates new compression levels 6 to 12. 
Originally committed as revision 5762 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-07-16 13:34:47 +00:00
Michael Niedermayer
408ec4e2a6 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
 2006-07-15 23:43:38 +00:00
Michael Niedermayer
8ea543b580 cleanup 
Originally committed as revision 5750 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-07-14 19:14:25 +00:00
Michael Niedermayer
ab01b2b82a optionally (use_lpc=2) support Cholesky factorization for finding the lpc coeficients 
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
 2006-07-14 18:48:38 +00:00
Michael Niedermayer
1484a46753 dither lpc cpeffs 
Originally committed as revision 5727 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-07-13 11:41:52 +00:00
Justin Ruggles
c6375bf23c allows user-settable block size and fixes related typo 
Originally committed as revision 5674 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-07-08 16:39:58 +00:00
Justin Ruggles
1e5707b7b8 porder patch by (Justin Ruggles jruggle a t earthlink d ot net) 
Originally committed as revision 5593 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-07-03 09:20:26 +00:00
Michael Niedermayer
474176bf92 3 lines while -> 1 line for loop 
Originally committed as revision 5577 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-07-02 13:14:04 +00:00
Michael Niedermayer
5d2f52b989 simplify 
Originally committed as revision 5576 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-07-02 13:10:08 +00:00
Michael Niedermayer
b2e30cb324 simplify compute_autocorr 
Originally committed as revision 5575 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-07-02 13:01:01 +00:00
Michael Niedermayer
412759560c dont use memcpy for copying structs 
Originally committed as revision 5574 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-07-02 12:40:39 +00:00
Michael Niedermayer
7c69b83057 simplify 
Originally committed as revision 5573 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-07-02 11:06:27 +00:00
Justin Ruggles
a403fc0324 flac-lpc patch by (Justin Ruggles jruggle earthlink net) 
tabs removed and regression.sh fixed (it was missing in the patch) by me

Originally committed as revision 5572 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-07-02 10:22:31 +00:00