[FFmpeg-devel] Fixpoint FFT optimization, with MDCT and IMDCT wrappers for audio optimization
Sat Jul 28 13:46:51 CEST 2007
On Fri, Jul 27, 2007 at 09:38:53PM -0400, Marc Hoffman wrote:
> On 7/27/07, Michael Niedermayer <michaelni at gmx.at> wrote:
> > Hi
> > On Fri, Jul 27, 2007 at 05:40:14PM -0400, mmh wrote:
> > [...]
> snip --- agreed and will make those changes.
> > > --- libavcodec/fft.c (revision 9807)
> > > +++ libavcodec/fft.c (working copy)
> > > @@ -109,7 +109,7 @@
> > > }
> > > nblocks = nblocks >> 1;
> > > } while (nblocks != 0);
> > > - av_freep(&s->exptab);
> > > +// av_freep(&s->exptab);
> > > }
> > hmm
> This because I'm testing on a machine that deallocates that array.
> i.e. X86 and guess what we make that array vanish. Give me a
> direction, and I will cast down the code as you command.
ff_fft_init() should call the fixed point init
the mmx code in it should be split out into a i386/whatever.c
and allso called from ff_fft_init()
i think that would solve it?
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
Republics decline into democracies and democracies degenerate into
despotisms. -- Aristotle
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