Chris@366: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@366: /*
Chris@366:     Constant-Q library
Chris@366:     Copyright (c) 2013-2014 Queen Mary, University of London
Chris@366: 
Chris@366:     Permission is hereby granted, free of charge, to any person
Chris@366:     obtaining a copy of this software and associated documentation
Chris@366:     files (the "Software"), to deal in the Software without
Chris@366:     restriction, including without limitation the rights to use, copy,
Chris@366:     modify, merge, publish, distribute, sublicense, and/or sell copies
Chris@366:     of the Software, and to permit persons to whom the Software is
Chris@366:     furnished to do so, subject to the following conditions:
Chris@366: 
Chris@366:     The above copyright notice and this permission notice shall be
Chris@366:     included in all copies or substantial portions of the Software.
Chris@366: 
Chris@366:     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
Chris@366:     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
Chris@366:     MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
Chris@366:     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
Chris@366:     CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
Chris@366:     CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
Chris@366:     WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Chris@366: 
Chris@366:     Except as contained in this notice, the names of the Centre for
Chris@366:     Digital Music; Queen Mary, University of London; and Chris Cannam
Chris@366:     shall not be used in advertising or otherwise to promote the sale,
Chris@366:     use or other dealings in this Software without prior written
Chris@366:     authorization.
Chris@366: */
Chris@366: 
Chris@366: #ifndef CQ_KERNEL_H
Chris@366: #define CQ_KERNEL_H
Chris@366: 
Chris@366: #include "CQParameters.h"
Chris@366: 
Chris@366: #include <vector>
Chris@366: #include <complex>
Chris@366: 
Chris@366: class FFT;
Chris@366: 
Chris@366: class CQKernel
Chris@366: {
Chris@366: public:
Chris@366:     CQKernel(CQParameters params);
Chris@366:     ~CQKernel();
Chris@366: 
Chris@366:     bool isValid() const { return m_valid; }
Chris@366:     
Chris@366:     struct Properties {
Chris@366:         double sampleRate;
Chris@366:         double maxFrequency;
Chris@366:         double minFrequency;
Chris@366:         int binsPerOctave;
Chris@366:         int fftSize;
Chris@366:         int fftHop;
Chris@366:         int atomsPerFrame;
Chris@366:         int atomSpacing;
Chris@366:         int firstCentre;
Chris@366:         int lastCentre;
Chris@366:         double Q;
Chris@366:     };
Chris@366: 
Chris@366:     Properties getProperties() const { return m_p; }
Chris@366: 
Chris@366:     std::vector<std::complex<double> > processForward
Chris@366:         (const std::vector<std::complex<double> > &);
Chris@366: 
Chris@366:     std::vector<std::complex<double> > processInverse
Chris@366:         (const std::vector<std::complex<double> > &);
Chris@366: 
Chris@366: private:
Chris@366:     const CQParameters m_inparams;
Chris@366:     Properties m_p;
Chris@366:     bool m_valid;
Chris@366:     FFT *m_fft;
Chris@366: 
Chris@366:     struct KernelMatrix {
Chris@366:         std::vector<int> origin;
Chris@366:         std::vector<std::vector<std::complex<double> > > data;
Chris@366:     };
Chris@366:     KernelMatrix m_kernel;
Chris@366: 
Chris@366:     std::vector<double> makeWindow(int len) const;
Chris@366:     bool generateKernel();
Chris@366:     void finaliseKernel();
Chris@366: };
Chris@366: 
Chris@366: #endif