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								#ifndef SOUNDOUT_H
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								#define SOUNDOUT_H
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								#include <QtCore>
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								#include <QDebug>
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								// An instance of this thread sends audio data to a specified soundcard.
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								// Output can be muted while underway, preserving waveform timing when
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								// transmission is resumed.
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								class SoundOutThread : public QThread
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								{
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								  Q_OBJECT
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								protected:
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								  virtual void run();
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								public:
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								// Constructs (but does not start) a SoundOutThread
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								  SoundOutThread()
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								    :   quitExecution(false)           // Initialize some private members
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								    ,   m_rate(0)
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								    ,   m_nwave(48*11025)
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								    ,   m_txOK(false)
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								    ,   m_txMute(false)
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								  {
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								  }
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								public:
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								  void setOutputDevice(qint32 n);
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								  void setPeriod(int n);
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								  bool quitExecution;           //If true, thread exits gracefully
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								// Private members
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								private:
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								  double  m_rate;               //Sample rate
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								  qint32  m_nDevOut;            //Output device number
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								  qint32  m_nwave;              //Length of wave file
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								  qint32  m_TRperiod;           //T/R period (30 or 60 s)
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								  bool    m_txOK;               //Enable Tx audio
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								  bool    m_txMute;             //Mute temporarily
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								};
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								#endif
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