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Chris@43
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1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
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2
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Chris@43
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3 /*
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4 Vamp Tempogram Plugin
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5 Carl Bussey, Centre for Digital Music, Queen Mary University of London
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6 Copyright 2014 Queen Mary University of London.
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7
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8 This program is free software; you can redistribute it and/or
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9 modify it under the terms of the GNU General Public License as
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10 published by the Free Software Foundation; either version 2 of the
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11 License, or (at your option) any later version. See the file
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12 COPYING included with this distribution for more information.
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13 */
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c@7
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14
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c@7
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15 #ifndef __Tempogram__Spectrogram__
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c@7
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16 #define __Tempogram__Spectrogram__
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c@7
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17 #include <vector>
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c@7
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18 #include <vamp-sdk/FFT.h>
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c@7
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19 #include <cmath>
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Chris@31
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20 #include <cstddef>
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c@7
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21
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c@13
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22 typedef std::vector <std::vector<float> > Spectrogram;
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c@13
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23 typedef std::vector <std::vector<float> > SpectrogramTransposed;
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c@13
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24
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c@11
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25 class SpectrogramProcessor{
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c@13
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26 size_t m_windowLength;
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c@13
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27 size_t m_fftLength;
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c@13
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28 size_t m_hopSize;
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c@13
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29 size_t m_numberOfOutputBins;
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c@13
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30 double * m_pFftInput;
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c@13
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31 double * m_pFftOutputReal;
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c@13
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32 double * m_pFftOutputImag;
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c@7
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33
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c@7
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34 void initialise();
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c@7
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35 void cleanup();
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c@7
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36 public:
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37 SpectrogramProcessor(const size_t &windowLength, const size_t &fftLength, const size_t &hopSize);
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c@11
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38 ~SpectrogramProcessor();
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c@13
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39
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c@25
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40 Spectrogram process(const float * const pInput, const size_t &inputLength, const float * pWindow) const;
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c@14
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41 static SpectrogramTransposed transpose(const Spectrogram &spectrogram);
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c@25
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42 static float calculateMax(const Spectrogram &spectrogram);
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c@7
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43 };
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c@7
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44
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c@7
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45 #endif /* defined(__Tempogram__Spectrogram__) */
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