[FFmpeg-devel] [PATCH] activate ac3 decoder

Siarhei Siamashka siarhei.siamashka
Thu Feb 28 08:13:27 CET 2008

On 27 February 2008, Benjamin Larsson wrote:
> Siarhei Siamashka wrote:
> > On 19 February 2008, Michael Niedermayer wrote:
> > [...]
> [...]
> > What other FFT implementations can be also considered, before making a
> > decision what FFT implementation to use in ffmpeg?
> >
> > If DJBFFT would be the final choice, it still needs SIMD optimizations.
> > But somebody needs to confirm its current legal status to be completely
> > sure. And if DJBFFT is really public domain now, can it be relicensed to
> > LGPL?
> Hi, we got permission to use djbfft under the LGPL in FFmpeg.

That's a good news (http://cr.yp.to/distributors.html now also mentions DJBFFT
as public domain).

> So I propose that we start working on merging it. Fixed point ports would 
> be nice also :) 

Well, unless Michael stops you saying that he will revert any 
commit with split-radix FFT ;) Split-radix is not the FFT with 
the lowest computational complexity anymore.

More information about the ffmpeg-devel mailing list