libs/Music/MultiCumulativeDiffAlgo.h

   1 // Copyright 2004 "Gilles Degottex"
   2
   3 // This file is part of "Music"
   4
   5 // "Music" is free software; you can redistribute it and/or modify
   6 // it under the terms of the GNU Lesser General Public License as published by
   7 // the Free Software Foundation; either version 2.1 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // "Music" is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13 // GNU Lesser General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU Lesser General Public License
  16 // along with this program; if not, write to the Free Software
  17 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18
  19
  20 #ifndef _MultiCumulativeDiffAlgo_h_
  21 #define _MultiCumulativeDiffAlgo_h_
  22
  23 #include <vector>
  24 #include <deque>
  25 using namespace std;
  26 #include "Algorithm.h"
  27 #include "CumulativeDiff.h"
  28
  29 namespace Music
  30 {
  31         //! Compute error for each possible freqs with correlation algorithm
  32         class MultiCumulativeDiffAlgo : public Transform
  33         {
  34                 double m_test_complexity;
  35                 int m_first_fond;
  36                 vector<bool> m_is_fondamental;
  37
  38           protected:
  39                 void init();
  40                 virtual void AFreqChanged()                                                     {init();}
  41                 virtual void samplingRateChanged()                                      {init();}
  42                 virtual void semitoneBoundsChanged()                            {init();}
  43
  44           public:
  45                 //! correlation filters
  46                 vector< CumulativeDiff* > m_diffs;
  47
  48                 bool is_minima(int ih);
  49
  50           public:
  51                 double m_pitch_tolerance;
  52
  53                 void setTestComplexity(double test_complexity)          {m_test_complexity = test_complexity;}
  54                 double getTestComplexity()                                                      {return m_test_complexity;}
  55
  56                 virtual int getSampleAlgoLatency() const                        {return int((getAlgoLatency()/1000.0)*GetSamplingRate());}
  57                 //! in millis
  58                 virtual double getAlgoLatency() const                           {return 1000.0*(2*m_diffs[0]->m_s)/GetSamplingRate();}
  59
  60                 //! unique ctor
  61                 /*!
  62                  * \param latency_factor latency factor for statistical purpose [1;oo[
  63                  * \param test_complexity
  64                 */
  65                 MultiCumulativeDiffAlgo(int latency_factor, double test_complexity);
  66
  67                 //! overwrited computing function
  68                 virtual void apply(const deque<double>& buff);
  69
  70                 virtual double getFondamentalWaveLength() const;
  71
  72                 virtual ~MultiCumulativeDiffAlgo();
  73         };
  74 }
  75
  76 #endif