Counter.h

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/***************************************************************************
                          Counter.h  -  description
                             -------------------
    begin                : ven mar 26 2004
    copyright            : (C) 2004 by Daniele Lavatelli
    email                : ldaniele@interfree.it
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef COUNTER_H

 #define COUNTER_H

// #define TEST_YES //Compiled in test mode to produce documentation
 #define TEST_NO

 #include "TimeSpecStruct.h"
 

 typedef struct EventType
 {
  unsigned Type  : 1;
  unsigned Count : 7;
 } EventType;

 #define WHISTLE_EVENT 1
 #define NOISE_EVENT   0
 

 class Counter
 {
  public:


  Counter (TimeSpecsType);

  ~Counter();
  

  int   Process(int); //Returns Short, Long or Multiple whistle



  float GetReliability();

#ifdef TEST_YES


  void PrintStack(); //Provided for test, see documentation
#endif
  
  private:
  int           mPrevious; 
  TimeSpecsType mSpecs; 
  unsigned int  mEventStackPointer;
  EventType     mpEventStack[5];
  unsigned int  mNumWhistles;
  float         mReliability;
  float         mLastReliability;
 };

 #define SHORT_WHISTLE -2
 #define LONG_WHISTLE  -1
 #define NO_WHISTLES    0

 #define MAX_CONFIDENCE 1.0
 #define MED_CONFIDENCE 0.8
 #define LOW_CONFIDENCE 0.4

#endif

---