Chris@9: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@9: 
Chris@9: /*
Chris@9:     pYIN - A fundamental frequency estimator for monophonic audio
Chris@9:     Centre for Digital Music, Queen Mary, University of London.
Chris@9:     
Chris@9:     This program is free software; you can redistribute it and/or
Chris@9:     modify it under the terms of the GNU General Public License as
Chris@9:     published by the Free Software Foundation; either version 2 of the
Chris@9:     License, or (at your option) any later version.  See the file
Chris@9:     COPYING included with this distribution for more information.
Chris@9: */
Chris@9: 
matthiasm@0: #include "MonoNote.h"
matthiasm@0: #include <vector>
matthiasm@0: 
matthiasm@0: #include <cstdio>
matthiasm@0: #include <cmath>
matthiasm@0: #include <complex>
matthiasm@0: 
matthiasm@0: using std::vector;
matthiasm@0: using std::pair;
matthiasm@0: 
matthiasm@0: MonoNote::MonoNote() :
matthiasm@0:     hmm()
matthiasm@0: {
matthiasm@0: }
matthiasm@0: 
matthiasm@0: MonoNote::~MonoNote()
matthiasm@0: {
matthiasm@0: }
matthiasm@0: 
matthiasm@0: const vector<MonoNote::FrameOutput>
matthiasm@0: MonoNote::process(const vector<vector<pair<double, double> > > pitchProb)
matthiasm@0: {
matthiasm@0:     vector<vector<double> > obsProb;
matthiasm@0:     for (size_t iFrame = 0; iFrame < pitchProb.size(); ++iFrame)
matthiasm@0:     {
matthiasm@0:         obsProb.push_back(hmm.calculateObsProb(pitchProb[iFrame]));
matthiasm@0:     }
matthiasm@0:     
matthiasm@0:     vector<double> *scale = new vector<double>(pitchProb.size());
matthiasm@0:     
matthiasm@0:     vector<MonoNote::FrameOutput> out; 
matthiasm@0:     
matthiasm@0:     vector<int> path = hmm.decodeViterbi(obsProb, scale);
matthiasm@0:     
matthiasm@0:     for (size_t iFrame = 0; iFrame < path.size(); ++iFrame)
matthiasm@0:     {
matthiasm@0:         double currPitch = -1;
matthiasm@0:         int stateKind = 0;
matthiasm@0: 
matthiasm@0:         currPitch = hmm.par.minPitch + (path[iFrame]/hmm.par.nSPP) * 1.0/hmm.par.nPPS;
matthiasm@0:         stateKind = (path[iFrame]) % hmm.par.nSPP + 1;
matthiasm@0: 
matthiasm@0:         out.push_back(FrameOutput(iFrame, currPitch, stateKind));
matthiasm@0:         // std::cerr << path[iFrame] << " -- "<< pitchProb[iFrame][0].first << " -- "<< currPitch << " -- " << stateKind << std::endl;
matthiasm@0:     }
matthiasm@0:     delete scale;
matthiasm@0:     return(out);
Chris@9: }