Chris@43: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@43: 
Chris@43: /*
Chris@43:    Vamp Tempogram Plugin
Chris@43:    Carl Bussey, Centre for Digital Music, Queen Mary University of London
Chris@43:    Copyright 2014 Queen Mary University of London.
Chris@43:     
Chris@43:    This program is free software; you can redistribute it and/or
Chris@43:    modify it under the terms of the GNU General Public License as
Chris@43:    published by the Free Software Foundation; either version 2 of the
Chris@43:    License, or (at your option) any later version.  See the file
Chris@43:    COPYING included with this distribution for more information.
Chris@43: */
c@7: 
c@7: #ifndef __Tempogram__Spectrogram__
c@7: #define __Tempogram__Spectrogram__
c@7: #include <vector>
c@7: #include <vamp-sdk/FFT.h>
c@7: #include <cmath>
Chris@31: #include <cstddef>
c@7: 
c@13: typedef std::vector <std::vector<float> > Spectrogram;
c@13: typedef std::vector <std::vector<float> > SpectrogramTransposed;
c@13: 
c@11: class SpectrogramProcessor{
c@13:     size_t m_windowLength;
c@13:     size_t m_fftLength;
c@13:     size_t m_hopSize;
c@13:     size_t m_numberOfOutputBins;
c@13:     double * m_pFftInput;
c@13:     double * m_pFftOutputReal;
c@13:     double * m_pFftOutputImag;
c@7:     
c@7:     void initialise();
c@7:     void cleanup();
c@7: public:
c@14:     SpectrogramProcessor(const size_t &windowLength, const size_t &fftLength, const size_t &hopSize);
c@11:     ~SpectrogramProcessor();
c@13:     
c@25:     Spectrogram process(const float * const pInput, const size_t &inputLength, const float * pWindow) const;
c@14:     static SpectrogramTransposed transpose(const Spectrogram &spectrogram);
c@25:     static float calculateMax(const Spectrogram &spectrogram);
c@7: };
c@7: 
c@7: #endif /* defined(__Tempogram__Spectrogram__) */