Commit Graph

25 Commits

Author SHA1 Message Date
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 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 49c0dd754c indent
Originally committed as revision 14699 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-12 00:27:21 +00:00
Loren Merritt 5d0ddd1a9f split-radix FFT
c is 1.9x faster than previous c (on various x86 cpus), sse is 1.6x faster than previous sse.

Originally committed as revision 14698 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-12 00:26:58 +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
Måns Rullgård 4f54a3b8b4 indentation
Originally committed as revision 12478 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-03-17 19:22:31 +00:00
Måns Rullgård 844ea46aeb clean up FFT SIMD selection
Originally committed as revision 12477 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-03-17 19:22:28 +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
Loren Merritt ebbafcb454 sse implementation of imdct.
patch mostly by Zuxy Meng (zuxy dot meng at gmail dot com)

Originally committed as revision 6311 to svn://svn.ffmpeg.org/ffmpeg/trunk
2006-09-21 16:37:39 +00:00
Loren Merritt 652c59b967 use ff_fft_calc_3dn2 instead of sse on a K8.
1.5% faster vorbis.

Originally committed as revision 6024 to svn://svn.ffmpeg.org/ffmpeg/trunk
2006-08-19 02:42:20 +00:00
Loren Merritt 1e4ecf26f5 ff_fft_calc_3dn/3dn2/sse: convert intrinsics to inline asm.
2.5% faster fft, 0.5% faster vorbis.

Originally committed as revision 6023 to svn://svn.ffmpeg.org/ffmpeg/trunk
2006-08-18 23:53:49 +00:00
Loren Merritt 60ae06e77e r5954 broke fft on cpus with 3dnow but without mm3dnow.h
Originally committed as revision 5974 to svn://svn.ffmpeg.org/ffmpeg/trunk
2006-08-10 18:49:47 +00:00
Loren Merritt bcfa3e58ee 3dnow2 implementation of imdct.
6% faster vorbis and wma.

Originally committed as revision 5954 to svn://svn.ffmpeg.org/ffmpeg/trunk
2006-08-08 04:01:04 +00:00
Benjamin Larsson 7943355485 ff_fft_init now double checks that the system has mm3dnow.h before
checking if the cpu can do 3dnow at all. This bug caused amd cpu's
without sse to not have a working fft function. Ie no wma, cook or
vorbis decoder.

Originally committed as revision 5570 to svn://svn.ffmpeg.org/ffmpeg/trunk
2006-07-02 02:05:35 +00:00
Zuxy Meng 82eb4b0f1b 3DNow! & Extended 3DNow! versions of FFT
Patch by Zuxy Meng, zuxy <<dot>> meng >>at<< gmail <<dot>> com
Minor non-functional diff-related fixes by me.

Originally committed as revision 5125 to svn://svn.ffmpeg.org/ffmpeg/trunk
2006-03-08 04:13:55 +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 bb270c0896 COSMETICS: tabs --> spaces, some prettyprinting
Originally committed as revision 4764 to svn://svn.ffmpeg.org/ffmpeg/trunk
2005-12-22 01:10:11 +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
Michael Niedermayer db40a39aba AltiVec perf (take 2), plus a couple AltiVec functions by (Romain Dolbeau <dolbeau at irisa dot fr>)
Originally committed as revision 1464 to svn://svn.ffmpeg.org/ffmpeg/trunk
2003-01-16 21:54:55 +00:00
Romain Dolbeau e629ab68a7 altivec jumbo patch by (Romain Dolbeau <dolbeaur at club-internet dot fr>)
Originally committed as revision 1448 to svn://svn.ffmpeg.org/ffmpeg/trunk
2003-01-11 20:51:03 +00:00
Fabrice Bellard 8d268a7d4c fft altivec by Romain Dolbeau - simplified patch, test it on PPC with fft-test and wma decoding
Originally committed as revision 1417 to svn://svn.ffmpeg.org/ffmpeg/trunk
2003-01-07 18:15:48 +00:00
Fabrice Bellard bbbb6d6fc3 enabled SSE fft on x86
Originally committed as revision 1413 to svn://svn.ffmpeg.org/ffmpeg/trunk
2003-01-07 17:45:24 +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