/***************************************************************************
                          input.h  -  description
                             -------------------
    begin                : Sat May 5 2001
    copyright            : (C) 2001 by Volker Schroer
    email                : DL1KSV@gmx.de
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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 INPUT_H
#define INPUT_H

#include <qstring.h>

#include <sys/ioctl.h>
#include <unistd.h>
#include <fcntl.h>



/**Abstract base class for the different input devices like soundcard, textfile,  Wavfile
  *@author Volker Schroer
  */


class Input {
public: 
	Input(int ptt);
	virtual ~Input();
	
  /** Opens the Device named Device for reading */
  virtual bool open_Device_read(QString *) = 0;

  /** Opens the Device named Device for writing */
  virtual bool open_Device_write(QString *) = 0;

  /** Closes the open Device */
  virtual bool close_Device() = 0 ;

  /** Tries to read anzahl samples and returns the nuber of read samples */
  virtual int getSamples(double *sample,int anzahl) = 0;

  /** Tries to write anzahl samples and returns the nuber of written samples */
  virtual int putSamples(double *sample,int anzahl) = 0;

  /** Switches PTT */
  virtual void PTT(bool mode) = 0;


protected:

/** Filedescriptor of PTT- Device */
int serial;  	
};

#endif