/*

* 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 "StereoWideningEffectImpl.h"

#include <StereoWideningBase.h>

#include <ControlObserver.h>

using namespace multimedia;

CStereoWideningEffect::CStereoWideningEffect()

    {

    // No Impl

    }

CStereoWideningEffect::~CStereoWideningEffect()

    {

	delete iPrevStereoWideningProxy;

	delete  iStereoWideningProxy;

	iObservers.Close();

    }

TInt CStereoWideningEffect::PostConstructor()

    {

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

    return status;

    }

// From MControl begins

TInt CStereoWideningEffect::AddObserver( MControlObserver& aObserver )

    {

    return iObservers.Append(&aObserver);

    }

TInt CStereoWideningEffect::RemoveObserver( MControlObserver& aObserver )

    {

	TInt index = iObservers.Find(&aObserver);

	if( index != KErrNotFound )

		{

		iObservers.Remove(index);

		}

	return index;

    }

TUid CStereoWideningEffect::Type()

    {

    return KStereoWideningEffectControl;

    }

TControlType CStereoWideningEffect::ControlType()

    {

	return EEffectControl;

    }

// From MControl ends

// From MEffectControl begins

TInt CStereoWideningEffect::Apply()

    {

    return DoApply();

    }

// From MEffectControl ends

TInt CStereoWideningEffect::DoApply()

    {

    TInt error(KErrNone);    

	if(iStereoWideningProxy)

		{

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

		}	

	else

		{

		error = KErrNotReady;	

		}			

    return error;    

    }

// From MStereoWideningEffect begins

/**

* Check if continuous level is supported for stereo widening.

* @since 5.0

* @param  ETrue if continuous level is supported for stereo widening.  If this returns

*         EFalse, then the adaptation is actually setting the level to the nearest supported discrete

*         value, when SetStereoWidenlingLevelL is called.

* @return Error Code

*/

TInt CStereoWideningEffect::IsContinuousLevelSupported(TBool& aSupported)

	{

	TInt status(KErrNone);

	if(iStereoWideningProxy)

		{

		aSupported = iStereoWideningProxy->IsContinuousLevelSupported();	

		}	

	else

		{

		status = KErrNotReady;	

		}			

	return status;			

	}

/**

* Set stereo widening level.

* @since 5.0

* @param aLevel Stereo widening level ranges from 0-100, where 0 is None and 100 is Maximum widening.

*/

TInt CStereoWideningEffect::SetStereoWideningLevel( TInt aLevel )

	{

	TInt status(KErrNone);

	if(iStereoWideningProxy)

		{

		TRAP(status,iStereoWideningProxy->SetStereoWideningLevelL(aLevel));	

		}	

	else

		{

		status = KErrNotReady;	

		}			

	return status;			

	}

/**

* Get the stereo widening settings.

* @since 5.0

* @param aLevel Gets the Current Stereo widening level

* @return Error Code

*/

TInt CStereoWideningEffect::StereoWideningLevel(TInt& aLevel)

	{

	TInt status(KErrNone);

	if(iStereoWideningProxy)

		{

		aLevel = iStereoWideningProxy->StereoWideningLevel();	

		}	

	else

		{

		status = KErrNotReady;	

		}			

	return status;	

	}

// From MStereoWideningEffect ends

// From MAudioEffectControl

/**

* Disable the effect

* @since 5.0

*/

TInt CStereoWideningEffect::Disable()

	{

	TInt status(KErrNone);

	if(iStereoWideningProxy)

		{

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

		}	

	else

		{

		status = KErrNotReady;	

		}			

	return status;				

	}

/**

* Enable the effect

* @since 5.0

*/

TInt CStereoWideningEffect::Enable()

	{

	TInt status(KErrNone);

	RDebug::Print(_L("CStereoWideningEffect::Enable() [%x]"),iStereoWideningProxy);

	if(iStereoWideningProxy)

		{

		TRAP(status,iStereoWideningProxy->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 CStereoWideningEffect::Enforce( TBool &aEnforced )

	{

	TInt status(KErrNone);

	if(iStereoWideningProxy)

		{

		TRAP(status,iStereoWideningProxy->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 CStereoWideningEffect::HaveUpdateRights(TBool &aHaveUpdateRights)

	{

	TInt status(KErrNone);

	if(iStereoWideningProxy)

		{

		aHaveUpdateRights = iStereoWideningProxy->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 CStereoWideningEffect::IsEnabled(TBool &aEnabled)

	{

	TInt status(KErrNone);

	if(iStereoWideningProxy)

		{

		aEnabled = iStereoWideningProxy->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 CStereoWideningEffect::IsEnforced(TBool &aEnforced)

	{

	TInt status(KErrNone);

	if(iStereoWideningProxy)

		{

		aEnforced = iStereoWideningProxy->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 CStereoWideningEffect::Uid(TUid &aUid)

	{

	TInt status(KErrNone);

	if(iStereoWideningProxy)

		{

		aUid = iStereoWideningProxy->Uid();	

		}	

	else

		{

		status = KErrNotReady;	

		}			

	return status;			

	}

// From MAudioEffectControl Ends

// From CEffectControlBase begins

void CStereoWideningEffect::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 CStereoWideningEffect::CreateEffectProxy()

	{

	TInt status(KErrNone);

	status = GetMessageHandle(iMsgHndlrHandlePckg);

	if(status != KErrNone)

		{

		return status;	

		}

	iCustomCommand = GetCustomCommand();		

	if(!iCustomCommand)

		{

		return KErrNotReady;	

		}

	TRAP(status,iStereoWideningProxy = CStereoWideningProxy::NewL(iMsgHndlrHandlePckg, *iCustomCommand, NULL));	

	if(status == KErrNone)

		{

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

		}		

	return status;

	}

TInt CStereoWideningEffect::DeleteEffectProxy()

	{

	TInt status(KErrNone);	

	if(iStereoWideningProxy)

		{

		iPrevStereoWideningProxy = iStereoWideningProxy;	

		}

	iStereoWideningProxy = NULL;	

	return status;

	}

TInt CStereoWideningEffect::SavePreviousSettings()

	{

	TInt status(KErrNone);	

	if(iPrevStereoWideningProxy)

		{

		TBool enforce = iPrevStereoWideningProxy->IsEnforced();

		iStereoWideningProxy->EnforceL(enforce);	

		TBool enable = iPrevStereoWideningProxy->IsEnabled();

		if(enable)

			{

			iStereoWideningProxy->EnableL();	

			}

		delete iPrevStereoWideningProxy;

		iPrevStereoWideningProxy = NULL;

		}				

	return status;	

	}

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

 	{

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

		{

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

		} 		

 	}

// End of file