Commit Graph

21 Commits

Author SHA1 Message Date
Michael Niedermayer 71375e0500 Try to fix wma regression.
Originally committed as revision 15261 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-09-08 13:37:12 +00:00
Aurelien Jacobs 67f718bd11 Add a temp variable to ff_sine_window_init() to match the way wma.c computed
window before r14757. This fixes a regression introduced by r14757 on amd64.

Originally committed as revision 14982 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-26 19:40:53 +00:00
Robert Swain 47698b83fd The ff_sine_#[] should be aligned as they will commonly be used in dsputil
functions

Originally committed as revision 14767 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-14 22:12:19 +00:00
Robert Swain 69fc4da360 Add declarations for the sine tables used in wma.c (half window sizes: 128,
256, 512, 1024 and 2048) to mdct.c. Make them accessible via dsputil.h. Make
wma.c use these shared tables.

Originally committed as revision 14758 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-14 14:40:16 +00:00
Loren Merritt d46ac5bfde mdct wrapper function to match fft
Originally committed as revision 14703 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-12 00:38:30 +00:00
Loren Merritt 0a570e826d remove mdct tmp buffer
Originally committed as revision 14702 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-12 00:36:36 +00:00
Loren Merritt e8dd7b0c9a remove a float->double->float conversion.
1.8x faster imdct_c with fpmath=sse, no change with x87

Originally committed as revision 14701 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-12 00:34:08 +00:00
Loren Merritt 46803f4f67 optimize imdct_half:
remove tmp buffer.
skip fft reinterleave pass, leaving data in a format more convenient for simd.
merge post-rotate with post-reorder.

Originally committed as revision 14700 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-12 00:33:34 +00:00
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