Chris@47: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@47: 
Chris@47: /*
Chris@47:   Centre for Digital Music, Queen Mary University of London.
Chris@47:     
Chris@47:   This program is free software; you can redistribute it and/or
Chris@47:   modify it under the terms of the GNU General Public License as
Chris@47:   published by the Free Software Foundation; either version 2 of the
Chris@47:   License, or (at your option) any later version.  See the file
Chris@47:   COPYING included with this distribution for more information.
Chris@47: */
Chris@47: 
Chris@55: #ifndef TUNING_DIFFERENCE_H
Chris@55: #define TUNING_DIFFERENCE_H
Chris@47: 
Chris@47: #include <vamp-sdk/Plugin.h>
Chris@47: 
Chris@47: #include <cq/Chromagram.h>
Chris@47: 
Chris@47: #include <memory>
Chris@47: 
Chris@47: using std::string;
Chris@47: using std::vector;
Chris@47: 
Chris@55: class TuningDifference : public Vamp::Plugin
Chris@47: {
Chris@47: public:
Chris@55:     TuningDifference(float inputSampleRate);
Chris@55:     virtual ~TuningDifference();
Chris@47: 
Chris@47:     string getIdentifier() const;
Chris@47:     string getName() const;
Chris@47:     string getDescription() const;
Chris@47:     string getMaker() const;
Chris@47:     int getPluginVersion() const;
Chris@47:     string getCopyright() const;
Chris@47: 
Chris@47:     InputDomain getInputDomain() const;
Chris@47:     size_t getPreferredBlockSize() const;
Chris@47:     size_t getPreferredStepSize() const;
Chris@47:     size_t getMinChannelCount() const;
Chris@47:     size_t getMaxChannelCount() const;
Chris@47: 
Chris@47:     ParameterList getParameterDescriptors() const;
Chris@47:     float getParameter(string identifier) const;
Chris@47:     void setParameter(string identifier, float value);
Chris@47: 
Chris@47:     ProgramList getPrograms() const;
Chris@47:     string getCurrentProgram() const;
Chris@47:     void selectProgram(string name);
Chris@47: 
Chris@47:     OutputList getOutputDescriptors() const;
Chris@47: 
Chris@47:     bool initialise(size_t channels, size_t stepSize, size_t blockSize);
Chris@47:     void reset();
Chris@47: 
Chris@47:     FeatureSet process(const float *const *inputBuffers,
Chris@47:                        Vamp::RealTime timestamp);
Chris@47: 
Chris@47:     FeatureSet getRemainingFeatures();
Chris@47: 
Chris@47: protected:
Chris@47:     typedef vector<float> Signal;
Chris@47:     typedef vector<double> TFeature;
Chris@47: 
Chris@47:     int m_channelCount;
Chris@47:     int m_bpo;
Chris@47:     int m_blockSize;
Chris@47:     int m_frameCount;
Chris@47:     float m_maxDuration;
Chris@47:     int m_maxSemis;
Chris@47:     bool m_fineTuning;
Chris@47: 
Chris@50:     std::unique_ptr<Chromagram> m_refChroma;
Chris@50:     TFeature m_refTotals;
Chris@50:     std::map<int, TFeature> m_refFeatures; // map from cents-offset to feature
Chris@50:     Signal m_reference; // we have to retain this when fine-tuning is enabled
Chris@50:     std::vector<std::shared_ptr<Chromagram>> m_otherChroma;
Chris@50:     std::vector<TFeature> m_otherTotals;
Chris@50: 
Chris@47:     Chromagram::Parameters paramsForTuningFrequency(double hz) const;
Chris@47:     TFeature computeFeatureFromTotals(const TFeature &totals) const;
Chris@47:     TFeature computeFeatureFromSignal(const Signal &signal, double hz) const;
Chris@47:     void rotateFeature(TFeature &feature, int rotation) const;
Chris@50:     double featureDistance(const TFeature &ref, const TFeature &other,
Chris@50:                            int rotation) const;
Chris@50:     int findBestRotation(const TFeature &ref, const TFeature &other) const;
Chris@50:     std::pair<int, double> findFineFrequency(const TFeature &rotated,
Chris@50:                                              int coarseCents);
Chris@47:     void getRemainingFeaturesForChannel(int channel, FeatureSet &fs);
Chris@47: 
Chris@47:     mutable std::map<string, int> m_outputs;
Chris@47: };
Chris@47: 
Chris@47: 
Chris@47: #endif