view plugins/ChromagramPlugin.h @ 7:641ce27165bd

* Make chromagram take input in frequency domain.  This means we can avoid
  any bother with zero-padding at the front and end, etc, and misalignments
  because the host provides fft windows properly centred in the first place.

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    QM Vamp Plugin Set

    Centre for Digital Music, Queen Mary, University of London.
    All rights reserved.
*/

#ifndef _CHROMAGRAM_PLUGIN_H_
#define _CHROMAGRAM_PLUGIN_H_

#include <vamp-sdk/Plugin.h>
#include <dsp/chromagram/Chromagram.h>

#include <queue>

class ChromagramPlugin : public Vamp::Plugin
{
public:
    ChromagramPlugin(float inputSampleRate);
    virtual ~ChromagramPlugin();

    bool initialise(size_t channels, size_t stepSize, size_t blockSize);
    void reset();

    InputDomain getInputDomain() const { return FrequencyDomain; }

    std::string getName() const;
    std::string getDescription() const;
    std::string getMaker() const;
    int getPluginVersion() const;
    std::string getCopyright() const;

    ParameterList getParameterDescriptors() const;
    float getParameter(std::string) const;
    void setParameter(std::string, float);

    size_t getPreferredStepSize() const;
    size_t getPreferredBlockSize() const;

    OutputList getOutputDescriptors() const;

    FeatureSet process(float **inputBuffers, Vamp::RealTime timestamp);

    FeatureSet getRemainingFeatures();

protected:
    int m_minMIDIPitch;
    int m_maxMIDIPitch;
    float m_tuningFrequency;
    bool m_normalized;
    int m_bpo;

    void setupConfig();

    ChromaConfig m_config;
    Chromagram *m_chromagram;
    mutable size_t m_step;
    mutable size_t m_block;

    Feature normalize(const Feature &);
};


#endif