Bug#477806: Any updates on this bug?

Rogério Brito rbrito at ime.usp.br
Mon Apr 27 09:34:48 UTC 2009

Hi, Fabian.

On Apr 27 2009, Fabian Greffrath wrote:
> Rogério Brito schrieb:
>> I'm not sure right now, but I think that some functions of lame (OK, not
>> packaged in Debian) and lossywav (still not packaged) might benefit from
>> a Fast Fourier Transform.
> I have prepared djbft packages in the pkg-multimedia SVN that are ready 
> for upload IMHO. I packaged the software mainly for use with a52dec, 
> which is the only software that I know that actually uses djbfft.

Nice to know that. Oh, just one thing (I have not checked the svn repo
yet): are you compiling djbfft as a shared object?

> However, there are several other FFT libraries already available in the 
> Debian archive and I did not find it appropriate to upload just another 
> one that is used by only one other software in Debian (that is - by the 
> way - more and more replaced by generic solutions in ffmpeg).

Well, I'm not sure how the fft libraries perform these days, but I think
that doing a small benchmark would be useful. Especially for arches that
are less popular, like ppc.

> AFAIK lame does not use djbfft or any other external library for FFT  
> calculations; the same is true for lossywav.

Sure, lame does not use, but I'm thinking of getting rid of the assembly
specific parts (as much as I can---see the executable stacks problems that
we had recently).

BTW, can you check out the lame CVS repo and criticize the Debian
packaging? I'm willing to make major surgeries there, now that we're in
plain development cycle of lame 3.99.

OK, back to the djbfft, lossywav is only implemented in pascal/delphi and I
am planning a C port of it, where I would need a FFT library (to avoid
reinventing the wheel).

Would you like to join forces and transcribe the code from pascal to C, so
that we can have lossywav working for a broad range of platforms? I can add
you to the sf.net project (named lossywav, of course).

Regards, Rogério Brito.

Rogério Brito : rbrito@{mackenzie,ime.usp}.br : GPG key 1024D/7C2CAEB8
http://www.ime.usp.br/~rbrito : http://meusite.mackenzie.com.br/rbrito
Projects: algorithms.berlios.de : lame.sf.net : vrms.alioth.debian.org

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