/*

* Copyright (c) 2004 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:   Implementation of the Stereo Widening proxy class

*

*/

// INCLUDE FILES

#ifdef _DEBUG

#include <e32svr.h>

#endif

#include "StereoWideningProxy.h"

#include "StereoWideningEventObserver.h"

#include <CustomInterfaceUtility.h>

// ============================ MEMBER FUNCTIONS ===============================

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

// CStereoWideningProxy::CStereoWideningProxy

// C++ default constructor can NOT contain any code, that

// might leave.

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

//

CStereoWideningProxy::CStereoWideningProxy(

	TMMFMessageDestinationPckg aMessageHandler,

	MCustomCommand& aCustomCommand,

	CCustomInterfaceUtility* aCustomInterfaceUtility )

	: 	iCustomCommand(&aCustomCommand),

		iMessageHandler(aMessageHandler),

		iCustomInterfaceUtility(aCustomInterfaceUtility)

    {

    }

// Destructor

CStereoWideningProxy::~CStereoWideningProxy()

    {

    // Remove the custom interface message handler before we destroy the proxy.

    if(iCustomInterfaceUtility)

        iCustomInterfaceUtility->RemoveCustomInterface(iMessageHandler);

	delete iStereoWideningEventObserver;

	delete iCustomInterfaceUtility;

	}

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

// CStereoWideningProxy::NewL

// Static function for creating an instance of the Stereo Widening object.

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

//

EXPORT_C CStereoWideningProxy* CStereoWideningProxy::NewL(

	TMMFMessageDestinationPckg aMessageHandler,

    MCustomCommand& aCustomCommand,

    CCustomInterfaceUtility* aCustomInterfaceUtility )

    {

    CStereoWideningProxy* self = new (ELeave) CStereoWideningProxy(aMessageHandler, aCustomCommand, aCustomInterfaceUtility);

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop(self);

    return self;

	}

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

// CStereoWideningProxy::ConstructL

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

//

void CStereoWideningProxy::ConstructL()

    {

#ifdef _DEBUG

    RDebug::Print(_L("CStereoWideningProxy::ConstructL"));

#endif

    iStereoWideningEventObserver = CStereoWideningEventObserver::NewL(iMessageHandler, *iCustomCommand, *this);

    StartObserver();

    // sends a message to fetch initial data.

    TEfStereoWideningDataPckg dataPckgFrom;

	iCustomCommand->CustomCommandSync(iMessageHandler, (TInt)EAswefInitialize, KNullDesC8, KNullDesC8, dataPckgFrom);

	SetEffectData(dataPckgFrom);

	}

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

// CStereoWideningProxy::ApplyL

// Apply the Stereo Widening settings.

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

//

EXPORT_C void CStereoWideningProxy::ApplyL()

	{

#ifdef _DEBUG

    RDebug::Print(_L("CStereoWideningProxy::Apply"));

#endif

	if ( !iHaveUpdateRights )

		{

		User::Leave(KErrAccessDenied);

		}

	iStereoWideningData.iEnabled = iEnabled;

	iStereoWideningData.iEnforced = iEnforced;

	iStereoWideningData.iHaveUpdateRights = iHaveUpdateRights;

	iCustomCommand->CustomCommandSync(iMessageHandler, (TInt)EAswefApply, DoEffectData(), KNullDesC8);

	}

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

// CStereoWideningProxy::StartObserver

// Starts the event observer. The event observer monitors asynchronous events

// from the message handler.

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

//

void CStereoWideningProxy::StartObserver()

	{

#ifdef _DEBUG

    RDebug::Print(_L("CStereoWideningProxy::StartObserver"));

#endif

	iStereoWideningEventObserver->Start();

	}

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

// CStereoWideningProxy::StereoWideningEvent

// Checks which data member has changed and notify the observers.

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

//

void CStereoWideningProxy::StereoWideningEvent(

	const TDesC8& aBuffer )

	{

#ifdef _DEBUG

    RDebug::Print(_L("CStereoWideningProxy::StereoWideningEvent"));

#endif

	TEfStereoWideningDataPckg dataPckgFrom;

	dataPckgFrom.Copy(aBuffer);

	TEfStereoWidening newStereoWideningData = dataPckgFrom();

	TUint8 event = 0;

		if ( newStereoWideningData.iEnabled != iStereoWideningData.iEnabled )

			{

			iStereoWideningData.iEnabled = newStereoWideningData.iEnabled;

			iEnabled = newStereoWideningData.iEnabled;

			if ( iStereoWideningData.iEnabled )

				{

				event = MAudioEffectObserver::KEnabled;

				}

			else

				{

				event = MAudioEffectObserver::KDisabled;

				}

			}

		else if ( newStereoWideningData.iEnforced != iStereoWideningData.iEnforced )

			{

			iStereoWideningData.iEnforced = newStereoWideningData.iEnforced;

			iEnforced = newStereoWideningData.iEnforced;

			if ( iStereoWideningData.iEnforced )

				{

				event = MAudioEffectObserver::KEnforced;

				}

			else

				{

				event = MAudioEffectObserver::KNotEnforced;

				}

			}

		else if ( newStereoWideningData.iHaveUpdateRights != iStereoWideningData.iHaveUpdateRights )

			{

			iStereoWideningData.iHaveUpdateRights = newStereoWideningData.iHaveUpdateRights;

			iHaveUpdateRights = newStereoWideningData.iHaveUpdateRights;

			if ( iStereoWideningData.iHaveUpdateRights )

				{

				event = MAudioEffectObserver::KGainedUpdateRights;

				}

			else

				{

				event = MAudioEffectObserver::KLostUpdateRights;

				}

			}

		else if ( newStereoWideningData.iLevel != iStereoWideningData.iLevel )

			{

			iStereoWideningData.iLevel = newStereoWideningData.iLevel;

			event = MStereoWideningObserver::KStereoWideningLevelChanged;

			}

	if (!event)

		return;

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

		{

		iObservers[i]->EffectChanged(this, event);

		}

	}

// ========================== OTHER EXPORTED FUNCTIONS =========================

// End of File