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/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * $URL$
 * $Id$
 *
 */

/*
 * This code is based on original Hugo Trilogy source code
 *
 * Copyright (c) 1989-1995 David P. Gray
 *
 */

#ifndef HUGO_SOUND_H
#define HUGO_SOUND_H

#include "audio/mixer.h"
#include "audio/mididrv.h"
#include "audio/midiparser.h"
#include "audio/softsynth/pcspk.h"

namespace Hugo {

class MidiPlayer : public MidiDriver_BASE {
public:
	MidiPlayer(MidiDriver *driver);
	~MidiPlayer();

	bool isPlaying() const;
	int getVolume() const;

	void adjustVolume(int diff);
	void pause(bool p);
	void play(uint8 *stream, uint16 size);
	void setChannelVolume(int channel);
	void setLooping(bool loop);
	void setVolume(int volume);
	void stop();
	void syncVolume();
	void updateTimer();

	// MidiDriver interface
	int open();
	void close();
	void metaEvent(byte type, byte *data, uint16 length);
	void send(uint32 b);

	uint32 getBaseTempo();

private:
	static void timerCallback(void *p);

	static const int kNumbChannels = 16;

	MidiDriver *_driver;
	MidiParser *_parser;
	uint8 *_midiData;
	bool _isLooping;
	bool _isPlaying;
	bool _paused;
	int _masterVolume;
	MidiChannel *_channelsTable[kNumbChannels];
	uint8 _channelsVolume[kNumbChannels];
	Common::Mutex _mutex;
};

class SoundHandler {
public:
	SoundHandler(HugoEngine *vm);
	~SoundHandler();

	static const int kHugoCNT = 1190000;

	int8 pcspkrTimer;                               // Timer (ticks) for note being played
	int8 pcspkrOctave;                              // Current octave 1..7
	int8 pcspkrNoteDuration;                        // Current length of note (ticks)

	const char *DOSSongPtr;
	const char *DOSIntroSong;

	void toggleMusic();
	void toggleSound();
	void setMusicVolume();
	static void loopPlayer(void *refCon);
	void pcspkr_player();
	void playMusic(int16 tune);
	void playSound(int16 sound, const byte priority);
	void initSound();
	void syncVolume();
	void checkMusic();
	void loadIntroSong(Common::ReadStream &in);
	void initPcspkrPlayer();
protected:
	byte curPriority;                               // Priority of currently playing sound

private:
	HugoEngine *_vm;
	Audio::SoundHandle _soundHandle;
	MidiPlayer *_midiPlayer;
	Audio::PCSpeaker *_speakerStream;
	Audio::SoundHandle _speakerHandle;

	void stopSound();
	void stopMusic();
	void playMIDI(sound_pt seq_p, uint16 size);
};

} // End of namespace Hugo

#endif //HUGO_SOUND_H