/*

* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Project file for EnhancedMediaClient Utility

*

*/

#include "DistanceAttenuationEffectImpl.h"

#include <DistanceAttenuationBase.h>

#include <ControlObserver.h>

using namespace multimedia;

CDistanceAttenuationEffect::CDistanceAttenuationEffect()

    {

    // No Impl

    }

CDistanceAttenuationEffect::~CDistanceAttenuationEffect()

    {

	delete iPrevDistanceAttenuationProxy;

	delete  iDistanceAttenuationProxy;

	iObservers.Close();

    }

TInt CDistanceAttenuationEffect::PostConstructor()

    {

    TRAPD( status, CEffectControlBase::ConstructL(KUidDistanceAttenuationEffect) );

    return status;

    }

// From MControl begins

TInt CDistanceAttenuationEffect::AddObserver( MControlObserver& aObserver )

    {

    return iObservers.Append(&aObserver);

    }

TInt CDistanceAttenuationEffect::RemoveObserver( MControlObserver& aObserver )

    {

	TInt index = iObservers.Find(&aObserver);

	if( index != KErrNotFound )

		{

		iObservers.Remove(index);

		}

	return index;

    }

TUid CDistanceAttenuationEffect::Type()

    {

    return KDistanceAttenuationEffectControl;

    }

TControlType CDistanceAttenuationEffect::ControlType()

    {

	return EEffectControl;

    }

// From MControl ends

// From MEffectControl begins

TInt CDistanceAttenuationEffect::Apply()

    {

    return DoApply();

    }

// From MEffectControl ends

TInt CDistanceAttenuationEffect::DoApply()

    {

    TInt error(KErrNone);    

	if(iDistanceAttenuationProxy)

		{

		TRAP(error,iDistanceAttenuationProxy->ApplyL());	

		}	

	else

		{

		error = KErrNotReady;	

		}			

    return error;    

    }

// From MDistanceAttenuationEffect begins

/**

* Gets the Distance Attenuation of the listener.

* @since 3.0

* @param aRMin The source-to-listener distance below which the sound level is constant

* @param aRMax The source-to-listener distance above which the sound level is constant or zero

* @param aMuteAfterMax Indicate if the sound is muted beyond RMax

* @param aRollOffFactor Multiplier factor to source-to-listener distance

* @param aRoomRollOffFactor Multiplier factor to source-to-listener distance for Room effect.

* @return -

*/

TInt CDistanceAttenuationEffect::DistanceAttenuation( TInt& aRMin, TInt& aRMax, TBool& aMuteAfterMax,

                                   TUint& aRollOffFactor, TUint& aRoomRollOffFactor )

	{

	TInt status(KErrNone);

	if(iDistanceAttenuationProxy)

		{

		TInt32 a,b;

		TBool c;

		TUint32 d,e;

		iDistanceAttenuationProxy->DistanceAttenuation(a,b,c,d,e);	

		aRMin = a;

		aRMax = b;

		aMuteAfterMax = c;	

		aRollOffFactor = d;

		aRoomRollOffFactor = e;

		}	

	else

		{

		status = KErrNotReady;	

		}			

	return status;			

	}

/**

* Get roll off factor maximum value.

* @since 3.0

* @param aRollOffFactor The maximum multiplier factor to source-to-listener distance for Room effect.

* @return -

*/

TInt CDistanceAttenuationEffect::RollOffFactorMax( TUint& aRollOfFactorMax )

	{

	TInt status(KErrNone);

	if(iDistanceAttenuationProxy)

		{

		TUint32 factormax;

		iDistanceAttenuationProxy->RollOffFactorMax(factormax);	

		aRollOfFactorMax = factormax;

		}	

	else

		{

		status = KErrNotReady;	

		}			

	return status;			

	}

/**

* Get room roll off factor maximum value.

* @since 3.0

* @param aRollOffFactor The maximum multiplier factor to source-to-listener distance for Room effect.

* @return -

*/

TInt CDistanceAttenuationEffect::RoomRollOffFactorMax( TUint& aRoomRollOfFactorMax )

	{

	TInt status(KErrNone);

	if(iDistanceAttenuationProxy)

		{

		TUint32 factormax;

		iDistanceAttenuationProxy->RoomRollOffFactorMax(factormax);	

		aRoomRollOfFactorMax = factormax;

		}	

	else

		{

		status = KErrNotReady;	

		}			

	return status;			

	}

/**

* Sets the Distance Attenuation

* @since 3.0

* @param aRMin The source-to-listener distance below which the sound level is constant

* @param aRMax The source-to-listener distance above which the sound level is constant or zero

* @param aMuteAfterMax Indicate if the sound is muted beyond RMax

* @param aRollOffFactor Multiplier factor to source-to-listener distance

* @param aRoomRollOffFactor Multiplier factor to source-to-listener distance for Room effect.

* @return -

*/

TInt CDistanceAttenuationEffect::SetDistanceAttenuation( TInt aRMin, TInt aRMax, TBool aMuteAfterMax,

                                       TUint aRollOffFactor, TUint aRoomRollOffFactor )

	{

	TInt status(KErrNone);

	if(iDistanceAttenuationProxy)

		{

		TInt32 a,b;

		TBool c;	

		TUint32 d,e;

		a = aRMin;

		b = aRMax;

		c = aMuteAfterMax;

		d = aRollOffFactor;

		e = aRoomRollOffFactor;

		TRAP(status,iDistanceAttenuationProxy->SetDistanceAttenuationL(a,b,c,d,e));	

		}	

	else

		{

		status = KErrNotReady;	

		}			

	return status;	

	}

// From MDistanceAttenuationEffect ends

// From MAudioEffectControl

/**

* Disable the effect

* @since 5.0

*/

TInt CDistanceAttenuationEffect::Disable()

	{

	TInt status(KErrNone);

	if(iDistanceAttenuationProxy)

		{

		TRAP(status,iDistanceAttenuationProxy->DisableL());	

		}	

	else

		{

		status = KErrNotReady;	

		}			

	return status;				

	}

/**

* Enable the effect

* @since 5.0

*/

TInt CDistanceAttenuationEffect::Enable()

	{

	TInt status(KErrNone);

	RDebug::Print(_L("CDistanceAttenuationEffect::Enable() [%x]"),iDistanceAttenuationProxy);

	if(iDistanceAttenuationProxy)

		{

		TRAP(status,iDistanceAttenuationProxy->EnableL());	

		}	

	else

		{

		status = KErrNotReady;	

		}			

	return status;					

	}

/**

* Enforce the effect.

* @since 5.0

* @param aEnforced Indicate the effect is to be enforced or not. ETrue = Enforced.

*/

TInt CDistanceAttenuationEffect::Enforce( TBool &aEnforced )

	{

	TInt status(KErrNone);

	if(iDistanceAttenuationProxy)

		{

		TRAP(status,iDistanceAttenuationProxy->EnforceL(aEnforced));	

		}	

	else

		{

		status = KErrNotReady;	

		}					

	return status;		

	}

/**

* Check if this effect object currently has update rights.

* A client can lose update rights in some hardware platforms where there are a limited

* number of instances of an effect that can exist at the same time. When an effect instance

* has lost update rights the user can still change settings, but any calls to Apply the

* settings will be deferred until update rights are regained.

* @since 5.0

* @param ETrue if this object currently has rights to update the settings of this effect,

*         EFalse otherwise.

*/

TInt CDistanceAttenuationEffect::HaveUpdateRights(TBool &aHaveUpdateRights)

	{

	TInt status(KErrNone);

	if(iDistanceAttenuationProxy)

		{

		aHaveUpdateRights = iDistanceAttenuationProxy->HaveUpdateRights();	

		}	

	else

		{

		status = KErrNotReady;	

		}			

	return status;	

	}

/**

* Check if the effect is enabled

* @since 5.0

* @param ETrue if the effect is enabled, EFalse if the effect is disabled.

*/

TInt CDistanceAttenuationEffect::IsEnabled(TBool &aEnabled)

	{

	TInt status(KErrNone);

	if(iDistanceAttenuationProxy)

		{

		aEnabled = iDistanceAttenuationProxy->IsEnabled();	

		}	

	else

		{

		status = KErrNotReady;	

		}			

	return status;			

	}

/**

* Check if the effect is enforced.

* @since 5.0

* @param ETrue if the effect is enforced, EFalse if the effect isn ot enforced.

*/

TInt CDistanceAttenuationEffect::IsEnforced(TBool &aEnforced)

	{

	TInt status(KErrNone);

	if(iDistanceAttenuationProxy)

		{

		aEnforced = iDistanceAttenuationProxy->IsEnforced();	

		}	

	else

		{

		status = KErrNotReady;	

		}			

	return status;			

	}

/*

* Get the unique identifier of the audio effect

* @since 5.0

* @param Unique identifier of the audio effect object.

*/

TInt CDistanceAttenuationEffect::Uid(TUid &aUid)

	{

	TInt status(KErrNone);

	if(iDistanceAttenuationProxy)

		{

		aUid = iDistanceAttenuationProxy->Uid();	

		}	

	else

		{

		status = KErrNotReady;	

		}			

	return status;			

	}

// From MAudioEffectControl Ends

// From CEffectControlBase begins

void CDistanceAttenuationEffect::Event( TEffectControlEvent aEvent )

    {

	TInt status(KErrNone);    	

    // Controller Loaded with ECIBuilderCreated

    if ( aEvent == ECIBuilderCreated )

        {

    	RDebug::Print(_L("Deleting Proxy"));	

		status = DeleteEffectProxy();

		RDebug::Print(_L("Deleting Proxy [%d]"),status);	

		status = CreateEffectProxy();	

		RDebug::Print(_L("Creating Proxy [%d]"),status);	

		if(status == KErrNone)

			{

			SavePreviousSettings();	

			}

		else

			{

			for ( TInt i = 0; i < iObservers.Count(); i++ )

				{

				iObservers[i]->Event(this,MAudioEffectControl::KDisabled,NULL);

				} 		

			}	

        }

    else if ( aEvent == EMessageHandlerDeleted )

        {

        if(status == KErrNone)

        	{

        	DeleteEffectProxy();	

        	}

        }

    }

// From CEffectControlBase ends

TInt CDistanceAttenuationEffect::CreateEffectProxy()

	{

	TInt status(KErrNone);

	status = GetMessageHandle(iMsgHndlrHandlePckg);

	if(status != KErrNone)

		{

		return status;	

		}

	iCustomCommand = GetCustomCommand();		

	if(!iCustomCommand)

		{

		return KErrNotReady;	

		}

	TRAP(status,iDistanceAttenuationProxy = CDistanceAttenuationProxy::NewL(iMsgHndlrHandlePckg, *iCustomCommand, NULL));	

	if(status == KErrNone)

		{

		TRAP(status,iDistanceAttenuationProxy->RegisterObserverL(*this));	

		}		

	return status;

	}

TInt CDistanceAttenuationEffect::DeleteEffectProxy()

	{

	TInt status(KErrNone);	

	if(iDistanceAttenuationProxy)

		{

		iPrevDistanceAttenuationProxy = iDistanceAttenuationProxy;	

		}

	iDistanceAttenuationProxy = NULL;	

	return status;

	}

TInt CDistanceAttenuationEffect::SavePreviousSettings()

	{

	TInt status(KErrNone);	

	if(iPrevDistanceAttenuationProxy)

		{

		TBool enforce = iPrevDistanceAttenuationProxy->IsEnforced();

		iDistanceAttenuationProxy->EnforceL(enforce);	

		TBool enable = iPrevDistanceAttenuationProxy->IsEnabled();

		if(enable)

			{

			iDistanceAttenuationProxy->EnableL();	

			}

		delete iPrevDistanceAttenuationProxy;

		iPrevDistanceAttenuationProxy = NULL;

		}				

	return status;	

	}

 void CDistanceAttenuationEffect::EffectChanged( const CAudioEffect* /*aObservedEffect*/, TUint8 aEvent )

 	{

	for ( TInt i = 0; i < iObservers.Count(); i++ )

		{

		iObservers[i]->Event(this,aEvent,NULL);

		} 		

 	}

// End of file