/* 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef GRIM_IMUSE_H
#define GRIM_IMUSE_H

#include "common/mutex.h"

#include "engines/grim/imuse/imuse_track.h"

namespace Grim {

#define MAX_IMUSE_TRACKS 16
#define MAX_IMUSE_FADETRACKS 16

struct ImuseTable;
class SaveGame;

class Imuse {
private:

	int _callbackFps;

	Track *_track[MAX_IMUSE_TRACKS + MAX_IMUSE_FADETRACKS];

	Common::Mutex _mutex;
	ImuseSndMgr *_sound;

	bool _pause;
	bool _demo;

	int32 _attributes[185];
	int32 _curMusicState;
	int32 _curMusicSeq;

	const ImuseTable *_stateMusicTable;
	const ImuseTable *_seqMusicTable;

	int32 makeMixerFlags(int32 flags);
	static void timerHandler(void *refConf);
	void callback();
	void switchToNextRegion(Track *track);
	int allocSlot(int priority);
	void selectVolumeGroup(const char *soundName, int volGroupId);

	void fadeOutMusic(int fadeDelay);
	void fadeOutMusicAndStartNew(int fadeDelay, const char *filename, int hookId, int vol, int pan);
	Track *cloneToFadeOutTrack(Track *track, int fadeDelay);

	void playMusic(const ImuseTable *table, int atribPos, bool sequence);

	void flushTrack(Track *track);

public:
	Imuse(int fps, bool demo);
	~Imuse();

	bool startSound(const char *soundName, int volGroupId, int hookId, int volume, int pan, int priority, Track *otherTrack);
	bool startVoice(const char *soundName, int volume = 127, int pan = 64);
	void startMusic(const char *soundName, int hookId, int volume, int pan);
	void startMusicWithOtherPos(const char *soundName, int hookId, int volume, int pan, Track *otherTrack);
	void startSfx(const char *soundName, int priority = 127);

	void restoreState(SaveGame *savedState);
	void saveState(SaveGame *savedState);
	void resetState();

	Track *findTrack(const char *soundName);
	void setPriority(const char *soundName, int priority);
	void setVolume(const char *soundName, int volume);
	int getVolume(const char *soundName);
	void setPan(const char *soundName, int pan); /* pan: 0 .. 127 */
	void setFadePan(const char *soundName, int destPan, int duration);
	void setFadeVolume(const char *soundName, int destVolume, int duration);
	void setHookId(const char *soundName, int hookId);
	int getCountPlayedTracks(const char *soundName);
	void stopSound(const char *soundName);
	void stopAllSounds();
	void pause(bool pause);
	void setMusicState(int stateId);
	int setMusicSequence(int seqId);
	void refreshScripts();
	void flushTracks();
	bool isVoicePlaying();
	char *getCurMusicSoundName();
	int getCurMusicPan();
	int getCurMusicVol();
	bool getSoundStatus(const char *soundName);
	int32 getPosIn16msTicks(const char *soundName);
};

extern Imuse *g_imuse;

} // end of namespace Grim

#endif