[FFmpeg-devel] [PATCH] Altivec split-radix FFT

Guillaume POIRIER poirierg
Sat Oct 17 20:22:39 CEST 2009


Hello,

2009/10/12 M?ns Rullg?rd <mans at mansr.com>

> Guillaume POIRIER <poirierg at gmail.com> writes:
>
> > Hello,
> >
> > On Mon, Oct 12, 2009 at 2:47 PM, Loren Merritt <lorenm at u.washington.edu
> >wrote:
> >
> >> On Tue, 29 Sep 2009, Loren Merritt wrote:
> >>
> >>> changed.
> >>>
> >>
> >> ping
> >
> > I'm fine with it. Too bad it won't speed-up the FFT on OSX, but at
> > the very least it doesn't break compilation on that OS.
> >
> > People who want split-radix FFT on OSX can either use Conrad's
> > script or use FSF's SDK.
>
> Will this FFT be enabled automatically if David's script is used?
>

Nope. Actually, I never managed to make that script work for me, even though
I passed the configure options that David advised me to pass:
./configure --cpu=g5 --enable-gpl --cc="gcc-4.2"
--as="/Users/gpoirier/Prgm/ffmpeg-git/gas-preprocessor.pl gcc-4.2"

compilation ends as follows:
gcc-4.2 -DHAVE_AV_CONFIG_H -I. -I"/Users/gpoirier/Prgm/ffmpeg-git"
-D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112 -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -mcpu=970 -mpowerpc-gfxopt -mpowerpc64 -std=c99
-mdynamic-no-pic -fomit-frame-pointer -maltivec -mabi=altivec -g
-Wdeclaration-after-statement -Wall -Wno-switch -Wdisabled-optimization
-Wpointer-arith -Wredundant-decls -Wno-pointer-sign -Wcast-qual
-Wwrite-strings -Wundef -O3 -fno-math-errno -fno-tree-vectorize       -MMD
-MF libavcodec/ppc/fft_altivec.d -MT libavcodec/ppc/fft_altivec.o -c -o
libavcodec/ppc/fft_altivec.o libavcodec/ppc/fft_altivec.c
/var/folders/OK/OK9VWpWfFU0cYq0AxFLacE+++TI/-Tmp-//ccYt2viD.s:576:Parameter
syntax error (parameter 1)
/var/folders/OK/OK9VWpWfFU0cYq0AxFLacE+++TI/-Tmp-//ccYt2viD.s:577:Parameter
syntax error (parameter 1)
/var/folders/OK/OK9VWpWfFU0cYq0AxFLacE+++TI/-Tmp-//ccYt2viD.s:579:Parameter
syntax error (parameter 1)
/var/folders/OK/OK9VWpWfFU0cYq0AxFLacE+++TI/-Tmp-//ccYt2viD.s:1077:Parameter
syntax error (parameter 1)
/var/folders/OK/OK9VWpWfFU0cYq0AxFLacE+++TI/-Tmp-//ccYt2viD.s:1078:Parameter
syntax error (parameter 1)
/var/folders/OK/OK9VWpWfFU0cYq0AxFLacE+++TI/-Tmp-//ccYt2viD.s:1080:Parameter
syntax error (parameter 1)



Maybe I don't have the latest version of his script?

Guillaume



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