c@225: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
c@225: 
c@225: /*
c@225:     QM DSP Library
c@225: 
c@225:     Centre for Digital Music, Queen Mary, University of London.
c@225:     This file copyright 2006 Martin Gasser.
c@225:     All rights reserved.
c@225: */
c@225: 
c@225: #ifndef _TONALESTIMATOR_
c@225: #define _TONALESTIMATOR_
c@225: 
c@225: 
c@225: #include <valarray>
c@225: #include <numeric>
c@225: #include <algorithm>
c@225: #include <iostream>
c@225: 
c@225: class ChromaVector : public std::valarray<double>
c@225: {
c@225: public:
c@225: 	ChromaVector(size_t uSize = 12) : std::valarray<double>()
c@225: 	{ resize(uSize, 0.0f); }
c@225: 	
c@225: 	virtual ~ChromaVector() {};
c@225: 	
c@225: 	void printDebug()
c@225: 	{
c@225: 		for (int i = 0; i < size(); i++)
c@225: 		{
c@225: 			std::cout <<  (*this)[i] << ";";
c@225: 		}
c@225: 		
c@225: 		std::cout << std::endl;
c@225: 	}
c@225: 	
c@225: 	void normalizeL1()
c@225: 	{
c@225: 		// normalize the chroma vector (L1 norm)
c@225: 		double dSum = 0.0;
c@225: 	
c@285: 		for (size_t i = 0; i < 12; (dSum += std::abs((*this)[i++]))) ;
c@285: 		for (size_t i = 0; i < 12; dSum > 0.0000001?((*this)[i] /= dSum):(*this)[i]=0.0, i++) ;
c@225: 
c@225: 	}
c@225: 	
c@225: };
c@225: 
c@225: class TCSVector : public std::valarray<double>
c@225: {
c@225: public:
c@225: 	TCSVector() : std::valarray<double>()
c@225: 	{ resize(6, 0.0f); }
c@225: 	
c@225: 	virtual ~TCSVector() {};
c@225: 
c@225: 	void printDebug()
c@225: 	{
c@225: 		for (int i = 0; i < size(); i++)
c@225: 		{
c@225: 			std::cout <<  (*this)[i] << ";";
c@225: 		}
c@225: 		
c@225: 		std::cout << std::endl;
c@225: 	}
c@225: 	
c@225: 	double magnitude() const
c@225: 	{
c@225: 		double dMag = 0.0;
c@225: 		
c@225: 		for (size_t i = 0; i < 6; i++)
c@225: 		{
c@225: 			dMag += std::pow((*this)[i], 2.0);
c@225: 		}
c@225: 		
c@225: 		return std::sqrt(dMag);
c@225: 	}
c@225: 
c@225: };
c@225: 
c@225: 
c@225: 
c@225: class TonalEstimator
c@225: {
c@225: public:
c@225: 	TonalEstimator();
c@225: 	virtual ~TonalEstimator();
c@225: 	TCSVector transform2TCS(const ChromaVector& rVector);
c@225: protected:
c@225: 	std::valarray< std::valarray<double> > m_Basis;
c@225: };
c@225: 
c@225: #endif // _TONALESTIMATOR_