/*

* 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 "RoomLevelEffectImpl.h"

#include <RoomLevelBase.h>

#include <ControlObserver.h>

#include "ReverbEffectImpl.h"

#ifdef _DEBUG

#include <e32debug.h>

#define _U(s) _L(s)

#define RET_ERR_IF_ERR(err) if (err!=KErrNone) { \

    RDebug::Print(_L("RET_ERR_IF_ERR:Line[%d]Err[%d]"), __LINE__, err); \

    RDebug::Print(_U( __FILE__ )); \

    return err; }

#else

#define RET_ERR_IF_ERR(err) if (err!=KErrNone) return err

#endif // _DEBUG

using namespace multimedia;

CRoomLevelEffect::CRoomLevelEffect()

    {

    // No Impl

    }

CRoomLevelEffect::~CRoomLevelEffect()

    {

	delete iPrevRoomLevelProxy;

	delete  iRoomLevelProxy;

	iObservers.Close();

    }

TInt CRoomLevelEffect::PostConstructor()

    {

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

    return status;

    }

// From MControl begins

TInt CRoomLevelEffect::AddObserver( MControlObserver& aObserver )

    {

    return iObservers.Append(&aObserver);

    }

TInt CRoomLevelEffect::RemoveObserver( MControlObserver& aObserver )

    {

	TInt index = iObservers.Find(&aObserver);

	if( index != KErrNotFound )

		{

		iObservers.Remove(index);

		}

	return index;

    }

TUid CRoomLevelEffect::Type()

    {

    return KRoomLevelEffectControl;

    }

TControlType CRoomLevelEffect::ControlType()

    {

	return EEffectControl;

    }

// From MControl ends

// From MEffectControl begins

TInt CRoomLevelEffect::Apply()

    {

    return DoApply();

    }

// From MEffectControl ends

TInt CRoomLevelEffect::DoApply()

    {

    TInt error(KErrNone);    

	if(iRoomLevelProxy)

		{

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

		}	

	else

		{

		error = KErrNotReady;	

		}			

    return error;    

    }

// From MRoomLevelEffect begins

/**

* Gets the RoomLevel current level in mB

* @since 5.0

* @return RoomLevel current level

*/

TInt CRoomLevelEffect::Level(TInt& aLevel)

	{

	TInt status(KErrNone);

	if(iRoomLevelProxy)

		{

		aLevel = iRoomLevelProxy->Level();	

		}	

	else

		{

		status = KErrNotReady;	

		}			

	return status;						

	}

/**

* Gets the RoomLevel current level maximum and minimum in mB

* @since 5.0

* @param aMin Minimum current level

* @param aMax Maximum current level

* @return -

*/

TInt CRoomLevelEffect::LevelRange( TInt& aMin, TInt& aMax )

	{

	TInt status(KErrNone);

	if(iRoomLevelProxy)

		{

		TInt32 min,max;	

		iRoomLevelProxy->LevelRange(min,max);

		aMin = min;

		aMax = max;	

		}	

	else

		{

		status = KErrNotReady;	

		}			

	return status;						

	}

/**

* Sets the RoomLevel level, it will leave if aRoomLevel is not within range of Min and Max

* @since 5.0

* @param aRoomLevelLevel The RoomLevel level in mB

*/

TInt CRoomLevelEffect::SetRoomLevel( TInt aRoomLevel )

	{

	TInt status(KErrNone);

	if(iRoomLevelProxy)

		{

		TRAP(status,iRoomLevelProxy->SetRoomLevelL(aRoomLevel));	

		}	

	else

		{

		status = KErrNotReady;	

		}			

	return status;				

	}

// From MRoomLevelEffect ends

// From MAudioEffectControl

/**

* Disable the effect

* @since 5.0

*/

TInt CRoomLevelEffect::Disable()

	{

	TInt status(KErrNone);

	if(iRoomLevelProxy)

		{

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

		}	

	else

		{

		status = KErrNotReady;	

		}			

	return status;				

	}

/**

* Enable the effect

* @since 5.0

*/

TInt CRoomLevelEffect::Enable()

	{

	TInt status(KErrNone);

	RDebug::Print(_L("CRoomLevelEffect::Enable() [%x]"),iRoomLevelProxy);

	if(iRoomLevelProxy)

		{

		TRAP(status,iRoomLevelProxy->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 CRoomLevelEffect::Enforce( TBool &aEnforced )

	{

	TInt status(KErrNone);

	if(iRoomLevelProxy)

		{

		TRAP(status,iRoomLevelProxy->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

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

*         EFalse otherwise.

*/

TInt CRoomLevelEffect::HaveUpdateRights(TBool &aHaveUpdateRights)

	{

	TInt status(KErrNone);

	if(iRoomLevelProxy)

		{

		aHaveUpdateRights = iRoomLevelProxy->HaveUpdateRights();	

		}	

	else

		{

		status = KErrNotReady;	

		}			

	return status;	

	}

/**

* Check if the effect is enabled

* @since 5.0

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

*/

TInt CRoomLevelEffect::IsEnabled(TBool &aEnabled)

	{

	TInt status(KErrNone);

	if(iRoomLevelProxy)

		{

		aEnabled = iRoomLevelProxy->IsEnabled();	

		}	

	else

		{

		status = KErrNotReady;	

		}			

	return status;			

	}

/**

* Check if the effect is enforced.

* @since 5.0

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

*/

TInt CRoomLevelEffect::IsEnforced(TBool &aEnforced)

	{

	TInt status(KErrNone);

	if(iRoomLevelProxy)

		{

		aEnforced = iRoomLevelProxy->IsEnforced();	

		}	

	else

		{

		status = KErrNotReady;	

		}			

	return status;			

	}

/*

* Get the unique identifier of the audio effect

* @since 5.0

* @return Unique identifier of the audio effect object.

*/

TInt CRoomLevelEffect::Uid(TUid &aUid)

	{

	TInt status(KErrNone);

	if(iRoomLevelProxy)

		{

		aUid = iRoomLevelProxy->Uid();	

		}	

	else

		{

		status = KErrNotReady;	

		}			

	return status;			

	}

// From MAudioEffectControl Ends

// From CEffectControlBase begins

void CRoomLevelEffect::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();	

        	}

        }

    }

TInt CRoomLevelEffect::AttachReverb( MReverbControl& aReverb )

    {

    TInt status(KErrNone);

    if ( iCReverbEffect )

        {

        status = KErrAlreadyExists;

        }

    RET_ERR_IF_ERR( status );

    if ( aReverb.Type() != KReverbEffectControl )

        {

        status = KErrArgument;

        }

    RET_ERR_IF_ERR( status );

    iCReverbEffect = dynamic_cast<CReverbEffect*>(&aReverb);

    status = KErrNone;

    return status;

    }

TInt CRoomLevelEffect::DetachReverb( MReverbControl& aReverb )

    {

    TInt status(KErrNone);

    if ( aReverb.Type() != KReverbEffectControl )

        {

        status = KErrArgument;

        }

    RET_ERR_IF_ERR( status );

    status = KErrNotFound;

    iCReverbEffect = dynamic_cast<CReverbEffect*>(&aReverb);

    if ( iCReverbEffect == dynamic_cast<CReverbEffect*>(&aReverb) )

        {

        status = KErrNone;

        // Make sure CRoomLevelEffect::AttachReverb is called before proxy gets created.

        if ( !iCReverbEffect )

            {

            status = KErrNotReady;  

            }

        RET_ERR_IF_ERR( status );

        // Detach reverb proxy here

        CEnvironmentalReverb* aReverb(NULL);

        status = iCReverbEffect->GetCEnvironmentalReverb(aReverb);

        RET_ERR_IF_ERR( status );

        status = iRoomLevelProxy->DettachReverb(*aReverb);

        RET_ERR_IF_ERR( status );

        iCReverbEffect = NULL;

        }

    return status;

    }

// From CEffectControlBase ends

TInt CRoomLevelEffect::CreateEffectProxy()

	{

	TInt status(KErrNone);

	status = GetMessageHandle(iMsgHndlrHandlePckg);

    RET_ERR_IF_ERR( status );

    iCustomCommand = GetCustomCommand();		

	if(!iCustomCommand)

		{

		status = KErrNotReady;	

		}

    RET_ERR_IF_ERR( status );

    // Make sure CRoomLevelEffect::AttachReverb is called before proxy gets created.

    if ( !iCReverbEffect )

        {

        status = KErrNotReady;  

        }

    RET_ERR_IF_ERR( status );

	TRAP(status,iRoomLevelProxy = CRoomLevelProxy::NewL(iMsgHndlrHandlePckg, *iCustomCommand, NULL));

    RET_ERR_IF_ERR( status );

    // Attach reverb proxy here

    CEnvironmentalReverb* aReverb(NULL);

    status = iCReverbEffect->GetCEnvironmentalReverb(aReverb);

    RET_ERR_IF_ERR( status );

    status = iRoomLevelProxy->AttachReverb(*aReverb);

    RET_ERR_IF_ERR( status );

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

	return status;

	}

TInt CRoomLevelEffect::DeleteEffectProxy()

	{

	TInt status(KErrNone);	

	if(iRoomLevelProxy)

		{

		iPrevRoomLevelProxy = iRoomLevelProxy;	

		}

	iRoomLevelProxy = NULL;	

	return status;

	}

TInt CRoomLevelEffect::SavePreviousSettings()

	{

	TInt status(KErrNone);	

	if(iPrevRoomLevelProxy)

		{

		TBool enforce = iPrevRoomLevelProxy->IsEnforced();

		iRoomLevelProxy->EnforceL(enforce);	

		TBool enable = iPrevRoomLevelProxy->IsEnabled();

		if(enable)

			{

			iRoomLevelProxy->EnableL();	

			}

		delete iPrevRoomLevelProxy;

		iPrevRoomLevelProxy = NULL;

		}				

	return status;	

	}

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

 	{

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

		{

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

		} 		

 	}

// End of file