/*
** FamiTracker - NES/Famicom sound tracker
** Copyright (C) 2005-2010  Jonathan Liss
**
** 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 
** Library General Public License for more details.  To obtain a 
** copy of the GNU Library General Public License, write to the Free 
** Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
**
** Any permitted reproduction of these routines, in whole or in part,
** must bear this legend.
*/

#pragma once

//
// Derived channels, VRC6
//

class SoundGen;

class CChannelHandlerVRC6 : public CChannelHandler {
public:
	CChannelHandlerVRC6(SoundGen *gen);
	virtual void ProcessChannel();
	virtual void ResetChannel();
protected:
	virtual void PlayChannelNote(stChanNote *NoteData, int EffColumns);
};

class CVRC6Square1 : public CChannelHandlerVRC6 {
public:
	CVRC6Square1(SoundGen *gen) : CChannelHandlerVRC6(gen) { m_iDefaultDuty = 0; m_bEnabled = false; }
	void RefreshChannel();
protected:
	void ClearRegisters();
private:
};

class CVRC6Square2 : public CChannelHandlerVRC6 {
public:
	CVRC6Square2(SoundGen *gen) : CChannelHandlerVRC6(gen) { m_iDefaultDuty = 0;  m_bEnabled = false; }
	void RefreshChannel();
protected:
	void ClearRegisters();
private:
};

class CVRC6Sawtooth : public CChannelHandlerVRC6 {
public:
	CVRC6Sawtooth(SoundGen *gen) : CChannelHandlerVRC6(gen) { m_iDefaultDuty = 0;  m_bEnabled = false; };
	void RefreshChannel();
protected:
	void ClearRegisters();
private:
};
