Commit Graph

13 Commits

Author SHA1 Message Date
Loren Merritt
b9fa32082c exploit mdct symmetry
2% faster vorbis on conroe, k8. 7% on celeron.

Originally committed as revision 14207 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-07-13 15:03:58 +00:00
Robert Swain
9146e4d61c Add generic ff_sine_window_init function and implement in codecs appropriately
Originally committed as revision 13888 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-06-22 15:12:27 +00:00
Måns Rullgård
77f11d8a4c improve precision in mdct.c using double for some temporaries
Originally committed as revision 12457 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-03-16 13:15:42 +00:00
Robert Swain
3ed546fe52 Add variable alpha and size of half window for Kaiser-Bessel Derived window
generation. Hard code Bessel I0 approximation iterations to 50.

See thread for discussion:
[FFmpeg-devel] [PATCH] Move Kaiser-Bessel Derived window to mdct.c
Started on the 2008/01/10

Originally committed as revision 11520 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-01-13 11:02:08 +00:00
Robert Swain
4eb7a735cb Make the Kaiser-Bessel window generator a common function
Patch by Robert Swain, robert d swain a gmail d com

Originally committed as revision 11514 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-01-12 11:11:19 +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
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
Gildas Bazin
68951ecf0c fft_*() renamed into ff_fft_*() patch by (Gildas Bazin <gbazin at altern dot org>)
Originally committed as revision 2882 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-03-13 21:43:24 +00:00
Michael Niedermayer
983e3246b7 per file doxy
Originally committed as revision 1634 to svn://svn.ffmpeg.org/ffmpeg/trunk
2003-03-06 11:32:04 +00:00
Fabrice Bellard
d9823692f5 use av_malloc instead of malloc
Originally committed as revision 1412 to svn://svn.ffmpeg.org/ffmpeg/trunk
2003-01-07 17:44:21 +00:00
Fabrice Bellard
82696beed3 avoid name clash
Originally committed as revision 1104 to svn://svn.ffmpeg.org/ffmpeg/trunk
2002-10-29 22:26:01 +00:00
Fabrice Bellard
bb6f569072 new generic FFT/MDCT code for audio codecs
Originally committed as revision 1088 to svn://svn.ffmpeg.org/ffmpeg/trunk
2002-10-28 00:34:08 +00:00