void ofxFftBasic::fft(float *input, float *output)
{
int Half = bins/2;
if(!ready) {
ofLog(OF_LOG_ERROR, "setup() must be called before fft()\n");
return;
}
/* processing variables*/
float *in_real = new float[bins];
float *in_img = new float[bins];
float *out_real = new float[bins];
float *out_img = new float[bins];
for (int i = 0; i < bins; i++) {
in_real[i] = input[i];
}
runWindow(in_real);
RealFFT(bins, in_real, out_real, out_img);
float normalizer = 2. / windowSum;
for(int i = 1; i < Half; i++) {
output[i] = cartesianToAmplitude(out_real[i], out_img[i]) * normalizer;
}
delete [] in_real;
delete [] in_img;
delete [] out_real;
delete [] out_img;
}
void ofxFft::updatePolar() {
prepareCartesian();
for(int i = 0; i < binSize; i++) {
amplitude[i] = cartesianToAmplitude(real[i], imag[i]);
phase[i] = cartesianToPhase(real[i], imag[i]);
}
polarUpdated = true;
polarNormalized = cartesianNormalized;
}
