#ifndef _MIDI_SYNTH_H
#define _MIDI_SYNTH_H

#include <BeBuild.h>
#include <Midi.h>
#include <Synth.h>
#include <MidiDefs.h>

class BMidiSynth : public BMidi
{
public:
	BMidiSynth(); 
	virtual ~BMidiSynth();

	status_t EnableInput(bool enable, bool loadInstruments);
	bool IsInputEnabled(void) const;

	/* set volume. You can overdrive by passing values larger than 1.0 */
	void SetVolume(double volume);
	double Volume(void) const;

	/* set note offset in semi tones	*/
	/* (12 is down an octave, -12 is up an octave) */
	void SetTransposition(int16 offset);
	int16 Transposition(void) const;

	/* Mute and unmute channels (0 to 15) */
	void MuteChannel(int16 channel, bool do_mute);
	void GetMuteMap(char* pChannels) const;

	void SoloChannel(int16 channel, bool do_solo);
	void GetSoloMap(char* pChannels) const;

	/* Use these functions to drive the synth engine directly */
	status_t LoadInstrument(int16 instrument);
	status_t UnloadInstrument(int16 instrument);
	status_t RemapInstrument(int16 from, int16 to);

	void FlushInstrumentCache(bool startStopCache);

	/* get current midi tick in microseconds */
	uint32 Tick(void) const;

	/* The channel variable is 1 to 16. Channel 10 is percussion for example. */
	/* The programNumber variable is a number from 0-127 */

	virtual void NoteOff(
		uchar channel, uchar note, uchar velocity, uint32 time = B_NOW);

	virtual void NoteOn(
		uchar channel, uchar note, uchar velocity, uint32 time = B_NOW);

	virtual void KeyPressure(
		uchar channel, uchar note, uchar pressure, uint32 time = B_NOW);

	virtual void ControlChange(
		uchar channel, uchar controlNumber, uchar controlValue, 
		uint32 time = B_NOW);

	virtual void ProgramChange(
		uchar channel, uchar programNumber, uint32 time = B_NOW);

	virtual void ChannelPressure(
		uchar channel, uchar pressure, uint32 time = B_NOW);

	virtual void PitchBend(
		uchar channel, uchar lsb, uchar msb, uint32 time = B_NOW);

	virtual void AllNotesOff(bool controlOnly, uint32 time = B_NOW);

protected:
	void* fSongVariables;
	void* fPerformanceVariables;
	bool fMidiQueue;

private:

	virtual void _ReservedMidiSynth1();
	virtual void _ReservedMidiSynth2();
	virtual void _ReservedMidiSynth3();
	virtual void _ReservedMidiSynth4();

	friend class BSynth;

	virtual void Run();

	bool fInputEnabled;
	uint32 _reserved[4];
};

#endif // _MIDI_SYNTH_H