c@225: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
c@225: 
c@225: /*
c@225:     QM DSP Library
c@225: 
c@225:     Centre for Digital Music, Queen Mary, University of London.
c@309:     This file 2005-2006 Christian Landone.
c@309: 
c@309:     This program is free software; you can redistribute it and/or
c@309:     modify it under the terms of the GNU General Public License as
c@309:     published by the Free Software Foundation; either version 2 of the
c@309:     License, or (at your option) any later version.  See the file
c@309:     COPYING included with this distribution for more information.
c@225: */
c@225: 
cannam@489: #ifndef QM_DSP_CONSTANTQ_H
cannam@489: #define QM_DSP_CONSTANTQ_H
c@225: 
c@225: #include <vector>
c@241: #include "maths/MathAliases.h"
c@241: #include "maths/MathUtilities.h"
c@225: 
cannam@465: struct CQConfig {
cannam@465:     double FS;         // samplerate
c@245:     double min;        // minimum frequency
c@245:     double max;        // maximum frequency
c@245:     unsigned int BPO;  // bins per octave
c@245:     double CQThresh;   // threshold
c@225: };
c@225: 
cannam@483: class ConstantQ
cannam@483: {
c@225: public:
cannam@495:     ConstantQ(CQConfig config);
c@225:     ~ConstantQ();
c@225: 
cannam@495:     void process(const double* FFTRe, const double* FFTIm,
cannam@495:                  double* CQRe, double* CQIm);
cannam@495: 
cannam@495:     double* process(const double* FFTData);
c@225: 
c@225:     void sparsekernel();
c@225: 
cannam@495:     double getQ() { return m_dQ; }
cannam@495:     int getK() { return m_uK; }
cannam@495:     int getFFTLength() { return m_FFTLength; }
cannam@495:     int getHop() { return m_hop; }
c@225: 
c@225: private:
cannam@495:     void initialise(CQConfig config);
c@225:     void deInitialise();
cannam@483:         
c@225:     double* m_CQdata;
cannam@465:     double m_FS;
c@225:     double m_FMin;
c@225:     double m_FMax;
c@225:     double m_dQ;
c@225:     double m_CQThresh;
cannam@495:     int m_hop;
cannam@495:     int m_BPO;
cannam@495:     int m_FFTLength;
cannam@495:     int m_uK;
c@276: 
c@276:     struct SparseKernel {
cannam@495:         std::vector<int> is;
cannam@495:         std::vector<int> js;
c@276:         std::vector<double> imag;
c@276:         std::vector<double> real;
c@276:     };
c@276: 
c@276:     SparseKernel *m_sparseKernel;
c@225: };
c@225: 
c@225: 
c@225: #endif//CONSTANTQ_H
c@225: