81 lines
1.8 KiB
C
81 lines
1.8 KiB
C
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
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/*
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QM DSP Library
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Centre for Digital Music, Queen Mary, University of London.
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This file 2005-2006 Christian Landone.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version. See the file
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COPYING included with this distribution for more information.
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*/
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#ifndef CHROMAGRAM_H
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#define CHROMAGRAM_H
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#include "dsp/transforms/FFT.h"
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#include "base/Window.h"
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#include "ConstantQ.h"
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struct ChromaConfig{
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unsigned int FS;
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double min;
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double max;
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unsigned int BPO;
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double CQThresh;
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MathUtilities::NormaliseType normalise;
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};
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class Chromagram
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{
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public:
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Chromagram( ChromaConfig Config );
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~Chromagram();
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double* process( const double *data ); // time domain
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double* process( const double *real, const double *imag ); // frequency domain
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void unityNormalise( double* src );
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// Complex arithmetic
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double kabs( double real, double imag );
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// Results
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unsigned int getK() { return m_uK;}
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unsigned int getFrameSize() { return m_frameSize; }
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unsigned int getHopSize() { return m_hopSize; }
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private:
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int initialise( ChromaConfig Config );
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int deInitialise();
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Window<double> *m_window;
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double *m_windowbuf;
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double* m_chromadata;
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double m_FMin;
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double m_FMax;
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unsigned int m_BPO;
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unsigned int m_uK;
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MathUtilities::NormaliseType m_normalise;
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unsigned int m_frameSize;
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unsigned int m_hopSize;
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FFTReal* m_FFT;
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ConstantQ* m_ConstantQ;
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double* m_FFTRe;
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double* m_FFTIm;
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double* m_CQRe;
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double* m_CQIm;
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bool m_skGenerated;
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};
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#endif
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