Maarten de Boer wrote: > Hi, > > I suppose that many of you are or might be using fftw for real-time audio > processing, and I think the following information may be of your interest. > > I just came to realize that fftw_execute calls malloc. This happens even > though you create a 'plan' where you pass fftw_malloc preallocated input and > output buffers. > [ ... ] > I wrote the fftw developers and they confirmed the memory allocation takes > place. They suggested the following: > >> Try planning with the undocumented flag FFTW_NO_BUFFERING, which will >> prevent the use of malloc() in common cases. This is not >> foolproof---some transforms are very hard to do without additional >> buffers, but if all you are trying to do is vanilla out-of-place 1D >> transforms without large prime factors it should work.
Very interesting ... yoshimi still works with it in play, though it'll take a good deal more testing (and some thinking) to see if it makes a difference in my case. Thanks for that! cheers, Cal _______________________________________________ Linux-audio-dev mailing list [email protected] http://lists.linuxaudio.org/listinfo/linux-audio-dev
