[FFmpeg-devel] Fwd: Fixpoint FFT optimization, with MDCT and IMDCT wrappers for audio optimization

Guillaume POIRIER poirierg
Thu Aug 16 16:41:21 CEST 2007


On 8/16/07, Marc Hoffman <mmhoffm at gmail.com> wrote:

> I'm thinking that it might be better to define a fix point fft based
> on the reference float version like you have done.  And then hook
> optimizations via dsputils DSPContext, then you can just override the
> default behavior how ever you want for what ever platform you desire.
> What do you think?

Well, don't forget that according to Michael, FFmpeg's FFT sucks, so
writing a fixed-point version of a sucky implementation may not be so
wise :-(

A soldier will fight long and hard for a bit of colored ribbon.
 -- Napoleon Bonaparte

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