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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 file 2005-2006 Christian Landone.
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 CHROMAGRAM_H
#define CHROMAGRAM_H
#include "dsp/transforms/FFT.h"
#include "base/Window.h"
#include "ConstantQ.h"
struct ChromaConfig{
unsigned int FS;
double min;
double max;
unsigned int BPO;
double CQThresh;
MathUtilities::NormaliseType normalise;
};
class Chromagram
{
public:
Chromagram( ChromaConfig Config );
~Chromagram();
double* process( const double *data ); // time domain
double* process( const double *real, const double *imag ); // frequency domain
void unityNormalise( double* src );
// Complex arithmetic
double kabs( double real, double imag );
// Results
unsigned int getK() { return m_uK;}
unsigned int getFrameSize() { return m_frameSize; }
unsigned int getHopSize() { return m_hopSize; }
private:
int initialise( ChromaConfig Config );
int deInitialise();
Window<double> *m_window;
double *m_windowbuf;
double* m_chromadata;
double m_FMin;
double m_FMax;
unsigned int m_BPO;
unsigned int m_uK;
MathUtilities::NormaliseType m_normalise;
unsigned int m_frameSize;
unsigned int m_hopSize;
FFTReal* m_FFT;
ConstantQ* m_ConstantQ;
double* m_FFTRe;
double* m_FFTIm;
double* m_CQRe;
double* m_CQIm;
bool m_skGenerated;
};
#endif
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