ofxFft is an addon for openFrameworks

ofxFft wraps two libraries with the same interface: FFTW and KISS FFT. KISS FFT is MIT licensed, and enabled by default. FFTW is GPL, and can be enabled using the #define USE_FFTW flag.

To use ofxFft with FFTW make sure you download the precompiled libraries.

Basic usage is demonstrated by example-eq and example-basic.

To install ofxFft, move the ofxFft folder to your of/addons/ folder.

Note: With ofx version 0.9.0, the project generator should add the compiler search paths for the project automatically if configured to include ofxFft.

With each project, you need to:

Add to your compiler search path:

of/addons/ofxFft/src
of/addons/ofxFft/libs/kiss

If you're using FFTW on Windows, you'll also need to add:

of/addons/ofxFft/libs/fftw/include

And link with:

of/addons/ofxFft/libs/fftw/lib/win32/libfftw3f-3.dll

If you're not using FFTW, you'll need to:

From ofxFft.h, remove the line:

#define USE_FFTW
In the example projects ofApp.cpp, uncomment the line:

//fft = ofxFft::create(bufferSize, OF_FFT_WINDOW_HAMMING);

and comment out the line:

fft = ofxFft::create(bufferSize, OF_FFT_WINDOW_HAMMING, OF_FFT_FFTW);

FFTW was compiled with:

./configure --disable-shared --enable-static --enable-float --enable-threads make sudo make install

which puts the static libraries in .libs

Note that the library is compiled in 32-bit mode on both Windows and OS X.

cibomahto/ofxFft

ofxFft is an addon for openFrameworks