FFT.h

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

/*
    Vamp

    An API for audio analysis and feature extraction plugins.

    Centre for Digital Music, Queen Mary, University of London.
    Copyright 2006-2012 Chris Cannam and QMUL.
  
    Permission is hereby granted, free of charge, to any person
    obtaining a copy of this software and associated documentation
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    included in all copies or substantial portions of the Software.

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*/

#ifndef _VAMP_FFT_H_
#define _VAMP_FFT_H_

#include "plugguard.h"
_VAMP_SDK_PLUGSPACE_BEGIN(FFT.h)

namespace Vamp {

class FFT
{
public:
    static void forward(unsigned int n,
                        const double *ri, const double *ii,
                        double *ro, double *io);

    static void inverse(unsigned int n,
                        const double *ri, const double *ii,
                        double *ro, double *io);
};

class FFTComplex
{
public:
    FFTComplex(unsigned int n);

    ~FFTComplex();

    void forward(const double *ci, double *co);

    void inverse(const double *ci, double *co);

private:
    class D;
    D *m_d;
};

class FFTReal
{
public:
    FFTReal(unsigned int n);

    ~FFTReal();

    void forward(const double *ri, double *co);

    void inverse(const double *ci, double *ro);

private:
    class D;
    D *m_d;
};

}

_VAMP_SDK_PLUGSPACE_END(FFT.h)

#endif