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ffmpeg / libavcodec / i386 / fft_sse.c @ 0dba1995

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# Date Author Comment
be449fca 10/16/2008 01:34 PM Diego Pettenò

Convert asm keyword into asm.

Neither the asm() nor the asm() keyword is part of the C99
standard, but while GCC accepts the former in C89 syntax, it is not
accepted in C99 unless GNU extensions are turned on (with -fasm). The
latter form is accepted in any syntax as an extension (without...

0a570e82 08/12/2008 12:36 AM Loren Merritt

remove mdct tmp buffer

Originally committed as revision 14702 to svn://

46803f4f 08/12/2008 12:33 AM Loren Merritt

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://

5d0ddd1a 08/12/2008 12:26 AM Loren Merritt

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://

b9fa3208 07/13/2008 03:03 PM Loren Merritt

exploit mdct symmetry
2% faster vorbis on conroe, k8. 7% on celeron.

Originally committed as revision 14207 to svn://

245976da 05/09/2008 11:56 AM Diego Biurrun

Use full path for #includes from another directory.

Originally committed as revision 13098 to svn://

40d0e665 05/08/2008 09:11 PM Ramiro Polla

Do not misuse long as the size of a register in x86.
typedef x86_reg as the appropriate size and use it instead.

Originally committed as revision 13081 to svn://

ee387b57 06/08/2007 08:35 PM Graham Booker

work around issues with the old version of Gnu Assembler shipped on
Intel / OSX 10.4.9
patch by Graham Booker % gbooker A cod3r P com %
Original thread:
Date: May 25, 2007 11:51 PM
Subject: [FFmpeg-devel] r9017 breaks WMA decoding on Intel Macs
The patch:...

b550bfaa 05/16/2007 09:51 AM Ronald S. Bultje

Add libavcodec to compiler include flags in order to simplify header
include paths in the source files.
mostly from a patch by Ronald S. Bultje, rbultje ronald.bitfreak net

Originally committed as revision 9034 to svn://

25e4f8aa 05/13/2007 04:32 PM Zuxy Meng

Faster SSE FFT/MDCT, patch by Zuxy Meng zuxy P meng A gmail P com
unrolls some loops, utilizing all 8 xmm registers. fft-test
shows ~10% speed up in (I)FFT and ~8% speed up in (I)MDCT on Dothan

Originally committed as revision 9017 to svn://

b78e7197 10/07/2006 03:30 PM Diego Biurrun

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://

ebbafcb4 09/21/2006 04:37 PM Loren Merritt

sse implementation of imdct.
patch mostly by Zuxy Meng (zuxy dot meng at gmail dot com)

Originally committed as revision 6311 to svn://

1e4ecf26 08/18/2006 11:53 PM Loren Merritt

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://

2ffb22d2 03/05/2006 08:25 PM Zuxy Meng

use xorps instead of mulps to toggle the sign of a float, as suggested by Software Optimization Guide for AMD64 Processors.
Patch by Zuxy Meng < zuxy POIS meng AH gmail POIS com > OKed by Michael
Original thread:
Date: Mar 5, 2006 8:15 PM
Subject: [Ffmpeg-devel] [PATCH] Little optimization to fft_sse.c...

5509bffa 01/12/2006 10:43 PM Diego Biurrun

Update licensing information: The FSF changed postal address.

Originally committed as revision 4842 to svn://

bb270c08 12/22/2005 01:10 AM Diego Biurrun

COSMETICS: tabs --> spaces, some prettyprinting

Originally committed as revision 4764 to svn://

115329f1 12/17/2005 06:14 PM Diego Biurrun

COSMETICS: Remove all trailing whitespace.

Originally committed as revision 4749 to svn://

68951ecf 03/13/2004 09:43 PM Gildas Bazin

fft_*() renamed into ff_fft_*() patch by (Gildas Bazin <gbazin at altern dot org>)

Originally committed as revision 2882 to svn://

e1958604 01/07/2003 05:41 PM Fabrice Bellard

added define for builtins use - inverse fix by Romain Dolbeau

Originally committed as revision 1410 to svn://

bb6f5690 10/28/2002 12:34 AM Fabrice Bellard

new generic FFT/MDCT code for audio codecs

Originally committed as revision 1088 to svn://