comparison dsp/tempotracking/DownBeat.cpp @ 64:6cb2b3cd5356

* Refactor FFT a little bit so as to separate construction and processing
  rather than have a single static method -- will make it easier to use a
  different implementation
* pull in KissFFT implementation (not hooked up yet)

         (int((m_rate / decimationFactor) * 1.3));
 //    std::cerr << "rate = " << m_rate << ", bfs = " << m_beatframesize << std::endl;
     m_beatframe = new double[m_beatframesize];
     m_fftRealOut = new double[m_beatframesize];
     m_fftImagOut = new double[m_beatframesize];
+    m_fft = new FFTReal(m_beatframesize);
 }
 
 DownBeat::~DownBeat()
 {
     delete m_decimator1;

     if (m_buffer) free(m_buffer);
     delete[] m_decbuf;
     delete[] m_beatframe;
     delete[] m_fftRealOut;
     delete[] m_fftImagOut;
+    delete m_fft;
 }
 
 void
 DownBeat::setBeatsPerBar(int bpb)
 {

             m_beatframe[j] = 0.0;
         }
 
         // Now FFT beat frame
         
-        FFT::process(m_beatframesize, false,
-                     m_beatframe, 0, m_fftRealOut, m_fftImagOut);
+        m_fft->process(false, m_beatframe, m_fftRealOut, m_fftImagOut);
         
         // Calculate magnitudes
 
         for (size_t j = 0; j < m_beatframesize/2; ++j) {
             newspec[j] = sqrt(m_fftRealOut[j] * m_fftRealOut[j] +