/* 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/>.
 *
 */

/*
 * Copyright (C) 2006-2010 - Frictional Games
 *
 * This file is part of HPL1 Engine.
 */

#ifndef HPL_SOUND_CHANNEL_H
#define HPL_SOUND_CHANNEL_H

#include "common/list.h"
#include "hpl1/engine/math/MathTypes.h"

namespace hpl {
class iSoundData;
class cSoundManager;

class iSoundChannelCallback {
public:
	virtual ~iSoundChannelCallback() = default;
	virtual void OnPriorityRelease() = 0;
};

//--------------------------------------------

class iSoundChannel {
public:
	iSoundChannel(iSoundData *apData, cSoundManager *apSoundManger) : mpData(apData) {
		mbLooping = false;
		mbPaused = true;
		mbPositionRelative = false;

		mfSpeed = 1;
		mfVolume = 1;
		mfMaxDistance = 0;
		mfMinDistance = 0;

		mpSoundManger = apSoundManger;

		mvVelocity = cVector3f(0, 0, 0);
		mvPosition = cVector3f(0, 0, 0);
		mvRelPosition = cVector3f(0, 0, 0);

		mbBlockable = false;
		mfBlockVolumeMul = 1;

		mbAffectedByEnv = false;

		mlPriorityModifier = 0;

		mbStopUsed = false;

		mpCallback = NULL;

		mlId = 0;
	}

	virtual ~iSoundChannel() {}

	virtual void Play() = 0;
	virtual void Stop() = 0;

	virtual void SetPaused(bool abX) = 0;
	virtual void SetSpeed(float afSpeed) = 0;
	virtual void SetVolume(float afVolume) = 0;
	virtual void SetLooping(bool abLoop) = 0;
	virtual void SetPan(float afPan) = 0;
	virtual void Set3D(bool ab3D) = 0;

	virtual void SetPriority(int alX) = 0;
	virtual int GetPriority() = 0;

	void SetPriorityModifier(int alX) {
		mlPriorityModifier = alX;
		SetPriority(GetPriority());
	}
	int GetPriorityModifier() { return mlPriorityModifier; }

	virtual void SetPositionRelative(bool abRelative) = 0;
	virtual void SetPosition(const cVector3f &avPos) = 0;
	void SetRelPosition(const cVector3f &avPos) { mvRelPosition = avPos; }

	virtual void SetVelocity(const cVector3f &avVel) = 0;

	virtual void SetMinDistance(float fMin) = 0;
	virtual void SetMaxDistance(float fMax) = 0;

	virtual bool IsPlaying() = 0;
	virtual bool IsBufferUnderrun() = 0;
	virtual double GetElapsedTime() = 0;
	virtual double GetTotalTime() = 0;

	bool GetPaused() { return mbPaused; }
	float GetSpeed() { return mfSpeed; }
	float GetVolume() { return mfVolume; }
	bool GetLooping() { return mbLooping; }
	float GetPan() { return mfPan; }
	bool Get3D() { return mb3D; }

	bool GetStopUsed() { return mbStopUsed; }

	bool GetBlockable() { return mbBlockable; }
	void SetBlockable(bool abX) { mbBlockable = abX; }
	void SetBlockVolumeMul(float afX) { mfBlockVolumeMul = afX; }
	float GetBlockVolumeMul() { return mfBlockVolumeMul; }

	bool GetPositionRelative() { return mbPositionRelative; }

	const cVector3f &GetRelPosition() { return mvRelPosition; }
	const cVector3f &GetPosition() { return mvPosition; }
	const cVector3f &GetVelocity() { return mvVelocity; }

	float GetMinDistance() { return mfMinDistance; }
	float GetMaxDistance() { return mfMaxDistance; }

	iSoundChannelCallback *GetCallBack() { return mpCallback; }
	void SetCallBack(iSoundChannelCallback *apCallback) { mpCallback = apCallback; }

	int GetId() { return mlId; }
	void SetId(int alX) { mlId = alX; }

	iSoundData *GetData() { return mpData; }

	// virtual void SetFiltering ( iFilter* apFilter, int alFlags ) = 0;
	virtual void SetAffectedByEnv(bool abAffected) { mbAffectedByEnv = abAffected; }
	virtual void SetFiltering(bool abEnabled, int alFlags) = 0;
	virtual void SetFilterGain(float afGain) = 0;
	virtual void SetFilterGainHF(float afGainHF) = 0;

protected:
	iSoundData *mpData;
	cSoundManager *mpSoundManger;

	bool mbLooping;
	bool mbPaused;
	bool mbPositionRelative;
	bool mb3D;

	float mfSpeed;
	float mfVolume;
	float mfPan;
	float mfMaxDistance;
	float mfMinDistance;

	cVector3f mvVelocity;
	cVector3f mvPosition;
	cVector3f mvRelPosition;

	bool mbBlockable;
	float mfBlockVolumeMul;

	bool mbAffectedByEnv;

	int mlPriority;
	int mlPriorityModifier;

	bool mbStopUsed;

	int mlId;

	iSoundChannelCallback *mpCallback;
};

typedef Common::List<iSoundChannel *> tSoundChannelList;
typedef tSoundChannelList::iterator tSoundChannelListIt;

} // namespace hpl

#endif // HPL_SOUND_CHANNEL_H