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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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3 /*
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4 * SimilarityPlugin.h
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5 *
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6 * Copyright 2008 Centre for Digital Music, Queen Mary, University of London.
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7 * All rights reserved.
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8 */
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9
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10 #ifndef _SIMILARITY_PLUGIN_H_
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11 #define _SIMILARITY_PLUGIN_H_
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12
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13 #include <vamp-sdk/Plugin.h>
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14 #include <vamp-sdk/RealTime.h>
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15
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16 class MFCC;
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17 class Chromagram;
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18 class Decimator;
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19
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20 class SimilarityPlugin : public Vamp::Plugin
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21 {
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22 public:
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23 SimilarityPlugin(float inputSampleRate);
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24 virtual ~SimilarityPlugin();
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25
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26 bool initialise(size_t channels, size_t stepSize, size_t blockSize);
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27 void reset();
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28
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29 std::string getIdentifier() const;
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30 std::string getName() const;
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31 std::string getDescription() const;
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32 std::string getMaker() const;
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33 int getPluginVersion() const;
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34 std::string getCopyright() const;
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35
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36 size_t getPreferredStepSize() const;
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37 size_t getPreferredBlockSize() const;
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38 InputDomain getInputDomain() const { return TimeDomain; }
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39
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40 size_t getMinChannelCount() const;
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41 size_t getMaxChannelCount() const;
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42
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43 SimilarityPlugin::ParameterList getParameterDescriptors() const;
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44 float getParameter(std::string param) const;
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45 void setParameter(std::string param, float value);
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46
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47 OutputList getOutputDescriptors() const;
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48
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49 FeatureSet process(const float *const *inputBuffers, Vamp::RealTime timestamp);
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50
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51 FeatureSet getRemainingFeatures();
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52
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53 protected:
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54 int getDecimationFactor() const;
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55
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56 enum Type {
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57 TypeMFCC,
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58 TypeChroma
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59 };
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60
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61 void calculateBlockSize() const;
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62
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63 Type m_type;
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64 MFCC *m_mfcc;
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65 Chromagram *m_chromagram;
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66 Decimator *m_decimator;
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67 int m_featureColumnSize;
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68 mutable size_t m_blockSize;
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69 size_t m_fftSize;
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70 int m_channels;
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71
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72 mutable int m_distanceMatrixOutput;
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73 mutable int m_distanceVectorOutput;
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74 mutable int m_meansOutput;
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75 mutable int m_variancesOutput;
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76
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77 typedef std::vector<double> FeatureColumn;
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78 typedef std::vector<FeatureColumn> FeatureMatrix;
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79 typedef std::vector<FeatureMatrix> FeatureMatrixSet;
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80
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81 FeatureMatrixSet m_values;
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82 };
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83
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84 #endif
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85
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