/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.

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/>.

Additional permissions under GNU GPL version 3 section 7

If you modify this Program, or any covered work, by linking or
combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK,
NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent
JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK
(or a modified version of those libraries),
containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA,
PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG
JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the
licensors of this Program grant you additional
permission to convey the resulting work. Corresponding Source for a
non-source form of such a combination shall include the source code for
the parts of OpenSSL and IJG JPEG Library used as well as that of the covered
work.

You can contact Cyan Worlds, Inc. by email legal@cyan.com
 or by snail mail at:
      Cyan Worlds, Inc.
      14617 N Newport Hwy
      Mead, WA   99021

*==LICENSE==*/
//////////////////////////////////////////////////////////////////////////////
//																			//
//	plEAXEffects - Various classes and wrappers to support EAX				//
//					acceleration.											//
//																			//
//////////////////////////////////////////////////////////////////////////////

#ifndef _plEAXEffects_h
#define _plEAXEffects_h


#include "hsTypes.h"
#include "hsTemplates.h"


//// Listener Settings Class Definition ///////////////////////////////////////

class plDSoundBuffer;
class plEAXListenerMod;

#ifdef EAX_SDK_AVAILABLE
typedef struct _EAXREVERBPROPERTIES EAXREVERBPROPERTIES;
#else
#include <EFX-Util.h>
#endif

class plEAXListener 
{	
public:
	~plEAXListener();
	static plEAXListener	&GetInstance( void );

	hsBool	Init( void );
	void	Shutdown( void );

	bool SetGlobalEAXProperty(GUID guid, unsigned long ulProperty, void *pData, unsigned long ulDataSize );
	bool GetGlobalEAXProperty(GUID guid, unsigned long ulProperty, void *pData, unsigned long ulDataSize );
	
	void	ProcessMods( hsTArray<plEAXListenerMod *> &modArray );
	void	ClearProcessCache( void );

protected:
	plEAXListener();
	void	IFail( hsBool major );
	void	IFail( const char *msg, hsBool major );
	void	IRelease( void );

	void	IMuteProperties( EAXREVERBPROPERTIES *props, hsScalar percent );

	hsBool				fInited;
	
	// Cache info
	Int32				fLastModCount;
	hsBool				fLastWasEmpty;
	hsScalar			fLastSingleStrength;
	plEAXListenerMod	*fLastBigRegion;

};

//// Soft Buffer Settings Class Definition ////////////////////////////////////
//	Used to hold buffer settings that will be attenuated by a soft volume,
//	to make the main settings class a bit cleaner

class hsStream;
class plEAXSourceSoftSettings
{
public:
		Int16		fOcclusion;
		hsScalar	fOcclusionLFRatio, fOcclusionRoomRatio, fOcclusionDirectRatio;

		void		Read( hsStream *s );
		void		Write( hsStream *s );

		void		SetOcclusion( Int16 occ, hsScalar lfRatio, hsScalar roomRatio, hsScalar directRatio );
		Int16		GetOcclusion( void ) const { return fOcclusion; }
		hsScalar	GetOcclusionLFRatio( void ) const { return fOcclusionLFRatio; }
		hsScalar	GetOcclusionRoomRatio( void ) const { return fOcclusionRoomRatio; }
		hsScalar	GetOcclusionDirectRatio( void ) const { return fOcclusionDirectRatio; }

		void		Reset( void );
};

//// Buffer Settings Class Definition /////////////////////////////////////////

class plEAXSource;

class plEAXSourceSettings
{
	public:
		plEAXSourceSettings();
		virtual ~plEAXSourceSettings();

		void	Read( hsStream *s );
		void	Write( hsStream *s );

		void	Enable( hsBool e );
		hsBool	IsEnabled( void ) const { return fEnabled; }

		void	SetRoomParams( Int16 room, Int16 roomHF, hsBool roomAuto, hsBool roomHFAuto );
		Int16	GetRoom( void ) const   { return fRoom; }
		Int16	GetRoomHF( void )  const  { return fRoomHF; }
		hsBool	GetRoomAuto( void ) const   { return fRoomAuto; }
		hsBool	GetRoomHFAuto( void ) const  { return fRoomHFAuto; }

		void	SetOutsideVolHF( Int16 vol );
		Int16	GetOutsideVolHF( void ) const { return fOutsideVolHF; }

		void		SetFactors( hsScalar airAbsorption, hsScalar roomRolloff, hsScalar doppler, hsScalar rolloff );
		hsScalar	GetAirAbsorptionFactor( void ) const { return fAirAbsorptionFactor; }
		hsScalar	GetRoomRolloffFactor( void ) const { return fRoomRolloffFactor; }
		hsScalar	GetDopplerFactor( void ) const { return fDopplerFactor; }
		hsScalar	GetRolloffFactor( void ) const { return fRolloffFactor; }

		plEAXSourceSoftSettings	&GetSoftStarts( void ) { return fSoftStarts; }
		plEAXSourceSoftSettings	&GetSoftEnds( void ) { return fSoftEnds; }
		
		plEAXSourceSoftSettings	&GetCurrSofts( void )  { return fCurrSoftValues; }

		void		SetOcclusionSoftValue( hsScalar value );
		hsScalar	GetOcclusionSoftValue( void ) const { return fOcclusionSoftValue; }

		void		ClearDirtyParams( void ) const { fDirtyParams = 0; }

	protected:
		friend class plEAXSource;
		friend  plEAXSourceSoftSettings;

		hsBool		fEnabled;
		Int16		fRoom, fRoomHF;
		hsBool		fRoomAuto, fRoomHFAuto;
		Int16		fOutsideVolHF;
		hsScalar	fAirAbsorptionFactor, fRoomRolloffFactor, fDopplerFactor, fRolloffFactor;
		plEAXSourceSoftSettings	fSoftStarts, fSoftEnds, fCurrSoftValues;
		hsScalar	fOcclusionSoftValue;
		mutable UInt32		fDirtyParams;

		enum ParamSets
		{
			kOcclusion		= 0x01,
			kRoom			= 0x02,
			kOutsideVolHF	= 0x04,
			kFactors		= 0x08,
			kAll			= 0xff
		};

		void	IRecalcSofts( UInt8 whichOnes );
};

//// Source Class Definition //////////////////////////////////////////////////

class plEAXSource
{
public:
	friend plEAXSourceSettings;
	friend  plEAXSourceSoftSettings;

	plEAXSource();
	virtual ~plEAXSource();

	void	Init( plDSoundBuffer *parent );
	void	Release( void );
	hsBool	IsValid( void ) const;
	bool SetSourceEAXProperty(unsigned source, GUID guid, unsigned long ulProperty, void *pData, unsigned long ulDataSize);
	bool GetSourceEAXProperty(unsigned source, GUID guid, unsigned long ulProperty, void *pData, unsigned long ulDataSize);
	void	SetFrom(  plEAXSourceSettings *settings, unsigned source, hsBool force = false );

private:
	hsBool	fInit;
};

#endif //_plEAXEffects_h