I am trying to port my screensaver from windows to mac and one of its features was reacting on system sound output. On windows it was easy using Direct Sound, but I can't find any example of capturing sound output on mac. Is it possible even possible without writing something like kernel extension? Using flash it is also very easy — it even gives computeSpectrum
method to get raw data or even fft transformed data.
All programs that I have already found use Soundflower or their own kernel extension. But I don't think that asking to install separate program or using kernel extension is a good way.