src/DummyMonoQuantizer.cpp

   1 // Copyright 2005 "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 #include "MonoQuantizer.h"
  21
  22 #include <iostream>
  23 using namespace std;
  24 #include <Music/Music.h>
  25 using namespace Music;
  26 #include "DummyMonoQuantizer.h"
  27
  28 DummyMonoQuantizer::DummyMonoQuantizer()
  29 {
  30         m_confidence = 1.0;
  31 }
  32
  33 void DummyMonoQuantizer::quantize(double freq)
  34 {
  35 //      cerr << "DummyMonoQuantizer::quantize " << freq << endl;
  36
  37         double current_time = m_time.elapsed();
  38
  39         double current_center_freq = h2f(f2h(freq));
  40         m_avg_freq = freq;
  41
  42         if(m_current_center_freq==0.0)
  43         {
  44                 if(current_center_freq>0.0)
  45                 {
  46                         m_current_center_freq = current_center_freq;
  47                         m_duration.start();
  48                         emit(noteStarted(m_current_center_freq, 0.0));
  49                 }
  50         }
  51         else
  52         {
  53                 if(current_center_freq==0.0)
  54                 {
  55                         m_current_center_freq = current_center_freq;
  56                         emit(noteFinished(m_current_center_freq, 0.0));
  57                 }
  58                 else if(m_current_center_freq != current_center_freq)
  59                 {
  60                         emit(noteFinished(m_current_center_freq, 0.0));
  61                         m_current_center_freq = current_center_freq;
  62                         m_duration.start();
  63                         emit(noteStarted(m_current_center_freq, 0.0));
  64                 }
  65         }
  66 }
  67
  68 void DummyMonoQuantizer::reset()
  69 {
  70         quantize(0.0);
  71         m_avg_freq = 0.0;
  72 }