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#ifndef _SEGMENTER_H
#define _SEGMENTER_H
/*
* Segmenter.h
* soundbite
*
* Created by Mark Levy on 23/03/2006.
* Copyright 2006 Centre for Digital Music, Queen Mary, University of London.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version. See the file
COPYING included with this distribution for more information.
*
*/
#include <vector>
#include <iostream>
using std::vector;
using std::ostream;
class Segment
{
public:
int start; // in samples
int end;
int type;
};
class Segmentation
{
public:
int nsegtypes; // number of segment types, so possible types are {0,1,...,nsegtypes-1}
int samplerate;
vector<Segment> segments;
};
ostream& operator<<(ostream& os, const Segmentation& s);
class Segmenter
{
public:
Segmenter() {}
virtual ~Segmenter() {}
virtual void initialise(int samplerate) = 0; // must be called before any other methods
virtual int getWindowsize() = 0; // required window size for calls to extractFeatures()
virtual int getHopsize() = 0; // required hop size for calls to extractFeatures()
virtual void extractFeatures(const double* samples, int nsamples) = 0;
virtual void segment() = 0; // call once all the features have been extracted
virtual void segment(int m) = 0; // specify desired number of segment-types
virtual void clear() { features.clear(); }
const Segmentation& getSegmentation() const { return segmentation; }
protected:
vector<vector<double> > features;
Segmentation segmentation;
int samplerate;
};
#endif
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