Loren Merritt
46803f4f67
optimize imdct_half:
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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
16 years ago
Loren Merritt
b9fa32082c
exploit mdct symmetry
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2% faster vorbis on conroe, k8. 7% on celeron.
Originally committed as revision 14207 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Robert Swain
9146e4d61c
Add generic ff_sine_window_init function and implement in codecs appropriately
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Originally committed as revision 13888 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Måns Rullgård
77f11d8a4c
improve precision in mdct.c using double for some temporaries
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Originally committed as revision 12457 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Robert Swain
3ed546fe52
Add variable alpha and size of half window for Kaiser-Bessel Derived window
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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
17 years ago
Robert Swain
4eb7a735cb
Make the Kaiser-Bessel window generator a common function
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Patch by Robert Swain, robert d swain a gmail d com
Originally committed as revision 11514 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Diego Biurrun
b78e7197a8
Change license headers to say 'FFmpeg' instead of 'this program/this library'
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and fix GPL/LGPL version mismatches.
Originally committed as revision 6577 to svn://svn.ffmpeg.org/ffmpeg/trunk
18 years ago
Diego Biurrun
5509bffa88
Update licensing information: The FSF changed postal address.
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Originally committed as revision 4842 to svn://svn.ffmpeg.org/ffmpeg/trunk
19 years ago
Diego Biurrun
115329f160
COSMETICS: Remove all trailing whitespace.
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Originally committed as revision 4749 to svn://svn.ffmpeg.org/ffmpeg/trunk
19 years ago
Gildas Bazin
68951ecf0c
fft_*() renamed into ff_fft_*() patch by (Gildas Bazin <gbazin at altern dot org>)
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Originally committed as revision 2882 to svn://svn.ffmpeg.org/ffmpeg/trunk
21 years ago
Michael Niedermayer
983e3246b7
per file doxy
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Originally committed as revision 1634 to svn://svn.ffmpeg.org/ffmpeg/trunk
22 years ago
Fabrice Bellard
d9823692f5
use av_malloc instead of malloc
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Originally committed as revision 1412 to svn://svn.ffmpeg.org/ffmpeg/trunk
22 years ago
Fabrice Bellard
82696beed3
avoid name clash
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Originally committed as revision 1104 to svn://svn.ffmpeg.org/ffmpeg/trunk
22 years ago
Fabrice Bellard
bb6f569072
new generic FFT/MDCT code for audio codecs
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Originally committed as revision 1088 to svn://svn.ffmpeg.org/ffmpeg/trunk
22 years ago