view cq/CQKernel.h @ 127:8996465e39fc

Expose some more processing parameters, use a single parameter class

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
/*
    Constant-Q library
    Copyright (c) 2013-2014 Queen Mary, University of London

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    obtaining a copy of this software and associated documentation
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    Except as contained in this notice, the names of the Centre for
    Digital Music; Queen Mary, University of London; and Chris Cannam
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*/

#ifndef CQ_KERNEL_H
#define CQ_KERNEL_H

#include "CQParameters.h"

#include <vector>
#include <complex>

class FFT;

class CQKernel
{
public:
    CQKernel(CQParameters params);
    ~CQKernel();
    
    struct Properties {
        double sampleRate;
        double maxFrequency;
        double minFrequency;
        int binsPerOctave;
        int fftSize;
        int fftHop;
        int atomsPerFrame;
        int atomSpacing;
        int firstCentre;
        int lastCentre;
        double Q;
    };

    Properties getProperties() const { return m_p; }

    std::vector<std::complex<double> > processForward
        (const std::vector<std::complex<double> > &);

    std::vector<std::complex<double> > processInverse
        (const std::vector<std::complex<double> > &);

private:
    const CQParameters m_inparams;
    Properties m_p;
    FFT *m_fft;

    struct KernelMatrix {
        std::vector<int> origin;
        std::vector<std::vector<std::complex<double> > > data;
    };
    KernelMatrix m_kernel;

    std::vector<double> makeWindow(int len) const;
    void generateKernel();
    void finaliseKernel();
};

#endif