sl@0: /*
sl@0: * Copyright (c) 2004 Nokia Corporation and/or its subsidiary(-ies). 
sl@0: * All rights reserved.
sl@0: * This component and the accompanying materials are made available
sl@0: * under the terms of "Eclipse Public License v1.0"
sl@0: * which accompanies this distribution, and is available
sl@0: * at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: *
sl@0: * Initial Contributors:
sl@0: * Nokia Corporation - initial contribution.
sl@0: *
sl@0: * Contributors:
sl@0: *
sl@0: * Description:   Implementation of the Loudness proxy class
sl@0: *
sl@0: */
sl@0: 
sl@0: 
sl@0: 
sl@0: 
sl@0: // INCLUDE FILES
sl@0: 
sl@0: #ifdef _DEBUG
sl@0: #include <e32svr.h>
sl@0: #endif
sl@0: 
sl@0: #include "LoudnessProxy.h"
sl@0: #include "LoudnessEventObserver.h"
sl@0: #include <CustomInterfaceUtility.h>
sl@0: 
sl@0: 
sl@0: // ============================ MEMBER FUNCTIONS ===============================
sl@0: 
sl@0: // -----------------------------------------------------------------------------
sl@0: // CLoudnessProxy::CLoudnessProxy
sl@0: // C++ default constructor can NOT contain any code, that
sl@0: // might leave.
sl@0: // -----------------------------------------------------------------------------
sl@0: //
sl@0: CLoudnessProxy::CLoudnessProxy(
sl@0: 	TMMFMessageDestinationPckg aMessageHandler,
sl@0: 	MCustomCommand& aCustomCommand,
sl@0: 	CCustomInterfaceUtility* aCustomInterfaceUtility )
sl@0: 	: 	iCustomCommand(&aCustomCommand),
sl@0: 		iMessageHandler(aMessageHandler),
sl@0: 		iCustomInterfaceUtility(aCustomInterfaceUtility)
sl@0: 
sl@0:     {
sl@0:     }
sl@0: 
sl@0: // Destructor
sl@0: CLoudnessProxy::~CLoudnessProxy()
sl@0:     {
sl@0:     // Remove the custom interface message handler before we destroy the proxy.
sl@0:     if(iCustomInterfaceUtility)    
sl@0:         iCustomInterfaceUtility->RemoveCustomInterface(iMessageHandler);
sl@0: 	delete iLoudnessEventObserver;
sl@0: 	delete iCustomInterfaceUtility;
sl@0: 	}
sl@0: 
sl@0: // -----------------------------------------------------------------------------
sl@0: // CLoudnessProxy::NewL
sl@0: // Static function for creating an instance of the Loudness object.
sl@0: // -----------------------------------------------------------------------------
sl@0: //
sl@0: EXPORT_C CLoudnessProxy* CLoudnessProxy::NewL(
sl@0: 	TMMFMessageDestinationPckg aMessageHandler,
sl@0:     MCustomCommand& aCustomCommand,
sl@0:     CCustomInterfaceUtility* aCustomInterfaceUtility )
sl@0:     {
sl@0:     CLoudnessProxy* self = new (ELeave) CLoudnessProxy(aMessageHandler, aCustomCommand, aCustomInterfaceUtility);
sl@0:     CleanupStack::PushL(self);
sl@0:     self->ConstructL();
sl@0:     CleanupStack::Pop(self);
sl@0:     return self;
sl@0: 	}
sl@0: 
sl@0: // -----------------------------------------------------------------------------
sl@0: // CLoudnessProxy::ConstructL
sl@0: // -----------------------------------------------------------------------------
sl@0: //
sl@0: void CLoudnessProxy::ConstructL()
sl@0:     {
sl@0: #ifdef _DEBUG
sl@0:     RDebug::Print(_L("CLoudnessProxy::ConstructL"));
sl@0: #endif
sl@0:     iLoudnessEventObserver = CLoudnessEventObserver::NewL(iMessageHandler, *iCustomCommand, *this);
sl@0:     StartObserver();
sl@0:     // sends a message to fetch initial data.
sl@0:     TEfLoudnessDataPckg dataPckgFrom;
sl@0: 	iCustomCommand->CustomCommandSync(iMessageHandler, (TInt)ELefInitialize, KNullDesC8, KNullDesC8, dataPckgFrom);
sl@0: 	SetEffectData(dataPckgFrom);
sl@0: 	}
sl@0: 
sl@0: 
sl@0: // -----------------------------------------------------------------------------
sl@0: // CLoudnessProxy::ApplyL
sl@0: // Apply the Loudness settings.
sl@0: // -----------------------------------------------------------------------------
sl@0: //
sl@0: EXPORT_C void CLoudnessProxy::ApplyL()
sl@0: 	{
sl@0: #ifdef _DEBUG
sl@0:     RDebug::Print(_L("CLoudnessProxy::Apply"));
sl@0: #endif
sl@0: 
sl@0: 	if ( !iHaveUpdateRights )
sl@0: 		{
sl@0: 		User::Leave(KErrAccessDenied);
sl@0: 		}
sl@0: 
sl@0: 	iLoudnessData.iEnabled = iEnabled;
sl@0: 	iLoudnessData.iEnforced = iEnforced;
sl@0: 	iLoudnessData.iHaveUpdateRights = iHaveUpdateRights;
sl@0: 	iCustomCommand->CustomCommandSync(iMessageHandler, (TInt)ELefApply, DoEffectData(), KNullDesC8);
sl@0: 	}
sl@0: 
sl@0: // -----------------------------------------------------------------------------
sl@0: // CLoudnessProxy::StartObserver
sl@0: // Starts the event observer. The event observer monitors asynchronous events
sl@0: // from the message handler.
sl@0: // -----------------------------------------------------------------------------
sl@0: //
sl@0: void CLoudnessProxy::StartObserver()
sl@0: 	{
sl@0: #ifdef _DEBUG
sl@0:     RDebug::Print(_L("CLoudnessProxy::StartObserver"));
sl@0: #endif
sl@0: 
sl@0: 	iLoudnessEventObserver->Start();
sl@0: 	}
sl@0: 
sl@0: // -----------------------------------------------------------------------------
sl@0: // CLoudnessProxy::LoudnessEvent
sl@0: // Checks which data member has changed and notify the observers.
sl@0: // -----------------------------------------------------------------------------
sl@0: //
sl@0: void CLoudnessProxy::LoudnessEvent(
sl@0: 	const TDesC8& aBuffer )
sl@0: 	{
sl@0: #ifdef _DEBUG
sl@0:     RDebug::Print(_L("CLoudnessProxy::LoudnessEvent"));
sl@0: #endif
sl@0: 
sl@0: 	TEfLoudnessDataPckg dataPckgFrom;
sl@0: 	dataPckgFrom.Copy(aBuffer);
sl@0: 	TEfLoudnessData newLoudnessData = dataPckgFrom();
sl@0: 
sl@0: 	TUint8 event = 0;
sl@0: 
sl@0: 		if ( newLoudnessData.iEnabled != iLoudnessData.iEnabled )
sl@0: 			{
sl@0: 			iLoudnessData.iEnabled = newLoudnessData.iEnabled;
sl@0: 			iEnabled = newLoudnessData.iEnabled;
sl@0: 			if ( iLoudnessData.iEnabled )
sl@0: 				{
sl@0: 				event = MAudioEffectObserver::KEnabled;
sl@0: 				}
sl@0: 			else
sl@0: 				{
sl@0: 				event = MAudioEffectObserver::KDisabled;
sl@0: 				}
sl@0: 			}
sl@0: 		else if ( newLoudnessData.iEnforced != iLoudnessData.iEnforced )
sl@0: 			{
sl@0: 			iLoudnessData.iEnforced = newLoudnessData.iEnforced;
sl@0: 			iEnforced = newLoudnessData.iEnforced;
sl@0: 			if ( iLoudnessData.iEnforced )
sl@0: 				{
sl@0: 				event = MAudioEffectObserver::KEnforced;
sl@0: 				}
sl@0: 			else
sl@0: 				{
sl@0: 				event = MAudioEffectObserver::KNotEnforced;
sl@0: 				}
sl@0: 			}
sl@0: 		else if ( newLoudnessData.iHaveUpdateRights != iLoudnessData.iHaveUpdateRights )
sl@0: 			{
sl@0: 			iLoudnessData.iHaveUpdateRights = newLoudnessData.iHaveUpdateRights;
sl@0: 			iHaveUpdateRights = newLoudnessData.iHaveUpdateRights;
sl@0: 			if ( iLoudnessData.iHaveUpdateRights )
sl@0: 				{
sl@0: 				event = MAudioEffectObserver::KGainedUpdateRights;
sl@0: 				}
sl@0: 			else
sl@0: 				{
sl@0: 				event = MAudioEffectObserver::KLostUpdateRights;
sl@0: 				}
sl@0: 			}
sl@0: 
sl@0: 	if (!event)
sl@0: 		return;
sl@0: 
sl@0: 	for ( TInt i = 0; i < iObservers.Count(); i++ )
sl@0: 		{
sl@0: 		iObservers[i]->EffectChanged(this, event);
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: 
sl@0: // ========================== OTHER EXPORTED FUNCTIONS =========================
sl@0: 
sl@0: // End of File
sl@0: 
sl@0: