[FFmpeg-devel] Fixpoint FFT optimization, with MDCT and IMDCT wrappers for audio optimization
Sun Jul 29 20:17:38 CEST 2007
On 7/29/07, mmh <mmh at pleasantst.com> wrote:
> mmh writes:
> > Hi,
> > I could really use some help on the integration aspects of this patch.
> > The intent of this is to be able to implement optimized audio codecs
> > for architectures with out floating point operations. This is part of
> > the cook fixpoint patch but its a little more general.
> > I don't know what to do with s->exptab in fft.c, I need its contents I
> > guess this table wouldn't be deleted on a machine that will be using
> > fixpoint arithmetic however for testing I'm not sure what to do other
> > than code replication.
> > Thanks
> > Marc
> I think I got the integration issues out now. Thanks for all the great input.
+++ libavcodec/fft-test.c (working copy)
@@ -128,7 +128,6 @@
return (float)((random() & 0xffff) - 32768) / 32768.0;
@@ -153,13 +152,47 @@
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