//=============================================================================
//  MuseScore
//  Music Composition & Notation
//
//  Copyright (C) 2002-2012 Werner Schweer
//
//  This program is free software; you can redistribute it and/or modify
//  it under the terms of the GNU General Public License version 2
//  as published by the Free Software Foundation and appearing in
//  the file LICENCE.GPL
//=============================================================================
 
#ifndef __SYNTHESIZER_H__
#define __SYNTHESIZER_H__
 
#include "libmscore/synthesizerstate.h"
 
namespace Ms {
 
struct MidiPatch;
class PlayEvent;
class Synth;
class SynthesizerGui;
 
//---------------------------------------------------------
//   Synthesizer
//---------------------------------------------------------
 
class Synthesizer {
      bool _active;
 
   protected:
      float _sampleRate;
      SynthesizerGui* _gui;
 
   public:
      Synthesizer() : _active(false) { _gui = 0; }
      virtual ~Synthesizer() {}
      virtual void init(float sr)    { _sampleRate = sr; }
      float sampleRate() const       { return _sampleRate; }
 
      virtual const char* name() const = 0;
 
      virtual void setMasterTuning(double) {}
      virtual double masterTuning() const { return 440.0; }
 
      virtual bool loadSoundFonts(const QStringList&) = 0;
      virtual bool addSoundFont(const QString&)    { return false; }
      virtual bool removeSoundFont(const QString&) { return false; }
 
      virtual QStringList soundFonts() const = 0;
 
      virtual void process(unsigned, float*, float*, float*) = 0;
      virtual void play(const PlayEvent&) = 0;
 
      virtual const QList<MidiPatch*>& getPatchInfo() const = 0;
 
      // get/set synthesizer state
      virtual SynthesizerGroup state() const = 0;
      virtual bool setState(const SynthesizerGroup&) = 0;
      virtual void setValue(int, double) {}
      virtual double value(int) const { return 0.0; }
 
      void reset()                    { _active = false; }
      bool active() const             { return _active; }
      void setActive(bool val = true) { _active = val;  }
 
      virtual void allSoundsOff(int /*channel*/) {}
      virtual void allNotesOff(int /*channel*/) {}
 
      virtual SynthesizerGui* gui()  { return _gui; }
      };
 
}
#endif
 

V730 Not all members of a class are initialized inside the constructor. Consider inspecting: _sampleRate.