view dsp/phasevocoder/PhaseVocoder.h @ 289:befe5aa6b450

* 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)

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    QM DSP Library

    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2005-2006 Christian Landone.
    All rights reserved.
*/

#ifndef PHASEVOCODER_H
#define PHASEVOCODER_H

class FFTReal;

class PhaseVocoder  
{
public:
    PhaseVocoder( unsigned int size );
    virtual ~PhaseVocoder();

    void process( double* src, double* mag, double* theta);

protected:
    void getPhase(unsigned int size, double *theta, double *real, double *imag);
//    void coreFFT( unsigned int NumSamples, double *RealIn, double* ImagIn, double *RealOut, double *ImagOut);
    void getMagnitude( unsigned int size, double* mag, double* real, double* imag);
    void FFTShift( unsigned int size, double* src);

    unsigned int m_n;
    FFTReal *m_fft;
    double *m_imagOut;
    double *m_realOut;

};

#endif