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35 Commits

Author SHA1 Message Date
Michael Niedermayer
7e068841cb replace long double in the audiophile kiddy mode with doubles, its faster (and more portable) and the audiophile placebo 120db stopband attenuation isnt affected 
Originally committed as revision 8482 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-03-22 11:23:38 +00:00
Michael Niedermayer
d6fead9089 change high precision mode to 30 bits again after making the code less overflow sensitive 
Originally committed as revision 8481 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-03-22 11:13:13 +00:00
Michael Niedermayer
303bd95cd2 optimize linear filter coeff interpolation code, this also makes the code less prone to overflows 
Originally committed as revision 8480 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-03-22 11:10:30 +00:00
Michael Niedermayer
447caf7941 revert r8469 (increase bits for non default highprecision mode) 
it causes overflows with linear interpolated filters coefficients

Originally committed as revision 8476 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-03-22 03:18:34 +00:00
Michael Niedermayer
55fc0eb174 AUDIOPHILE_KIDDY_MODE 
Originally committed as revision 8475 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-03-22 03:16:02 +00:00
Michael Niedermayer
50df67d3b5 optimize bessel function instead of trusting gcc to do trivial optimizations (as gcc doesnt ...) 
Originally committed as revision 8474 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-03-22 00:52:49 +00:00
Michael Niedermayer
14f887efc6 select more sensible default windows (= attenuation beyond the dynamic range of your input is silly if it negatively affects other parameters) 
Originally committed as revision 8473 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-03-22 00:16:41 +00:00
Michael Niedermayer
20cf58c32b make kaiser windows with other beta than 16 available 
Originally committed as revision 8472 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-03-21 23:44:49 +00:00
Michael Niedermayer
c252b26d55 make high precision mode accessible at compile time 
Originally committed as revision 8470 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-03-21 22:39:00 +00:00
Michael Niedermayer
ca6940f871 increase bits for non default highprecision mode 
Originally committed as revision 8469 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-03-21 22:38:07 +00:00
Michael Niedermayer
ae232dd740 code for testing the accuracy of the resampler 
Originally committed as revision 8468 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-03-21 22:37:05 +00:00
Michael Niedermayer
66a148a19a remove dithering of filter coefficients, improves precision by 1-2 bits and 
improves subjective sound quality on artificial sample (udial.wav resampling
to 32khz)

Originally committed as revision 8467 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-03-21 22:02:52 +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
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
Stefan Huehner
7b49ce2e34 Add const to (mostly) char* and make some functions static, which aren't used 
outside their declaring source file and which have no corresponding prototype.
patch by Stefan Huehner stefan^^@^^huehner^^.^^org

Originally committed as revision 5497 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-06-18 11:33:14 +00:00
Diego Biurrun
5509bffa88 Update licensing information: The FSF changed postal address. 
Originally committed as revision 4842 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-01-12 22:43:26 +00:00
Diego Biurrun
115329f160 COSMETICS: Remove all trailing whitespace. 
Originally committed as revision 4749 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-12-17 18:14:38 +00:00
Wolfram Gloger
f0ff20a197 minor fixes for invalid audio data patch by (Wolfram Gloger: wmglo, dent med uni-muenchen de) 
Originally committed as revision 4524 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-08-14 16:37:29 +00:00
Kurosu
f41c1fac3c av_malloc vs av_mallocz patch by (Kurosu <kurosu inforezo org>) 
Originally committed as revision 3830 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-01-12 18:25:48 +00:00
Michael Niedermayer
53f0090dcc faster and slightly less accurate nearest neighbor resampler 
Originally committed as revision 3789 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-12-31 17:37:23 +00:00
Michael Niedermayer
6cb5dcb392 special case for filter_length==1 
Originally committed as revision 3787 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-12-31 12:58:46 +00:00
Michael Niedermayer
788d7a8cac av_resample_compensate() doxy 
Originally committed as revision 3671 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-11-12 02:05:26 +00:00
Michael Niedermayer
6e225de2fe user selectble cutoff frequency 
Originally committed as revision 3619 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-10-21 21:07:40 +00:00
Michael Niedermayer
4e255822e5 100l (dont reset the sample position at the block end) 
Originally committed as revision 3618 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-10-21 20:01:32 +00:00
Michael Niedermayer
ed861c6bd2 make most resample filter parameters selectable at runtime 
Originally committed as revision 3617 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-10-21 03:11:34 +00:00
Michael Niedermayer
f25ba8b393 optimization 
Originally committed as revision 3616 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-10-20 19:06:29 +00:00
Michael Niedermayer
51a880208a make filter size, int32/int16 and a few other things selectable at compiletime 
Originally committed as revision 3615 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-10-20 18:02:34 +00:00
Michael Niedermayer
2ac615da82 10l 
Originally committed as revision 3614 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-10-20 12:04:08 +00:00
Michael Niedermayer
80e8528865 dont just resample half of the data sometimes 
Originally committed as revision 3535 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-09-28 21:11:09 +00:00
Michael Niedermayer
bb22e8b175 10l (lrintf(a)+b vs. lrintf(a+b)) 
Originally committed as revision 3391 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-08-14 15:18:49 +00:00
Michael Niedermayer
1ac3176044 ugly missing lrintf workaround by ("Steven M. Schultz" <sms at 2bsd dot com>) 
Originally committed as revision 3289 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-07-05 19:19:04 +00:00
Michael Niedermayer
b9d2085ba1 various resampling fixes 
Originally committed as revision 3271 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-06-30 14:15:31 +00:00
Michael Niedermayer
08f7073a6f avoid useless normalization and 10l fix 
Originally committed as revision 3229 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-06-17 16:34:46 +00:00
Michael Niedermayer
aaaf1635c0 polyphase kaiser windowed sinc and blackman nuttall windowed sinc audio resample filters 
Originally committed as revision 3228 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-06-17 15:43:23 +00:00