/*
     File: MIDIControlHandler.h
 Abstract: Part of CoreAudio Utility Classes
  Version: 1.1

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*/
#ifndef __MIDICONTROLHANDLER_H__
#define	__MIDICONTROLHANDLER_H__

#include <CoreAudio/CoreAudio.h>

/*! Abstract interface base class for classes which handle all incoming MIDI data */

class MIDIControlHandler
{
public:
	virtual			~MIDIControlHandler() {}
	virtual void	Reset() = 0;								//! Restore all state to defaults
	virtual bool	SetProgramChange(UInt16	inProgram) = 0;
	virtual bool	SetPitchWheel(UInt16 inValue) = 0;
	virtual bool	SetChannelPressure(UInt8 inValue) = 0;
	virtual bool	SetPolyPressure(UInt8 inKey, UInt8 inValue) = 0;
	virtual bool	SetController(UInt8 inControllerNumber, UInt8 inValue) = 0;
	virtual bool	SetSysex(void *inSysexMsg) = 0;

	virtual float	GetPitchBend() const = 0;

	/*! Default controller values.  These represent MSB values unless indicated in the name */

	enum
	{
		kDefault_Midpoint				= 0x40,		//! Used for all center-null-point controllers
		kDefault_Volume				= 100,
		kDefault_Pan					= kDefault_Midpoint,
		kDefault_ModWheel				= 0,
		kDefault_Pitch					= kDefault_Midpoint,
		kDefault_Expression			= 0x7f,
		kDefault_ChannelPressure	= 0,
		kDefault_ReverbSend			= 40,
		kDefault_ChorusSend			= 0,

		kDefault_RPN_LSB				= 0x7f,
		kDefault_RPN_MSB				= 0x7f,
		kDefault_PitchBendRange		= 2,
		kDefault_FineTuning			= kDefault_Midpoint,
		kDefault_CoarseTuning		= kDefault_Midpoint,
		kDefault_ModDepthRange		= 0,
		kDefault_ModDepthRangeLSB	= kDefault_Midpoint
	};
};

#endif	// __MIDICONTROLHANDLER_H__
