FFT.h

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/* -*- 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 program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.  See the file
    COPYING included with this distribution for more information.
*/
 
#ifndef FFT_H
#define FFT_H
 
class FFT  
{
public:
    FFT(int nsamples);
    ~FFT();
 
    void process(bool inverse,
                 const double *realIn, const double *imagIn,
                 double *realOut, double *imagOut);
    
private:
    class D;
    D *m_d;
};
 
class FFTReal
{
public:
    FFTReal(int nsamples);
    ~FFTReal();
 
    void forward(const double *realIn,
                 double *realOut, double *imagOut);
 
    void forwardMagnitude(const double *realIn, double *magOut);
 
    void inverse(const double *realIn, const double *imagIn,
                 double *realOut);
 
private:
    class D;
    D *m_d;
};    
 
#endif