/* This source file is a part of the GePhex Project.

 Copyright (C) 2001-2004

 Georg Seidel <georg@gephex.org> 
 Martin Bayer <martin@gephex.org> 
 Phillip Promesberger <coma@gephex.org>
 
 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.
 
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.*/

#ifndef INCLUDED_SYNTH_H
#define INCLUDED_SYNTH_H

struct Instrument
{
  double frequenz_env_amount;
  double frequenz_env_attack;
  double frequenz_env_decay;
  double frequenz_env_sustain_level;
  double frequenz_env_sustain;
  double frequenz_env_release;
  double frequenz_lfo_amount;
  double frequenz_lfo_frequ;
  double amplitude_lfo_amount;
  double amplitude_lfo_frequ;
  double amplitude_env_amount;
  double amplitude_env_attack;
  double amplitude_env_decay;
  double amplitude_env_sustain_level;
  double amplitude_env_sustain;
  double amplitude_env_release;
  int waveform;
};

class Voice
{
public: 
  const Instrument& m_inst;
  double m_frequ;
  double m_starttime;
  double m_length;
  double m_amp;
  const double m_time_steps;
  
  double m_phase;
  double m_time;

  double last;
public:
  /**
   * construct new voice
   */
  Voice(const Instrument& inst, 
	double frequ, double starttime, double length, double amp, 
	double time_steps=1.0/44100.0);
  
  /**
   * calculate next sample
   */
  double operator()();
};


#endif