diff -r 000000000000 -r bde4ae8d615e os/mm/devsoundextensions/effects/DistAtten/DistanceAttenuationProxy/Src/DistanceAttenuationProxy.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/os/mm/devsoundextensions/effects/DistAtten/DistanceAttenuationProxy/Src/DistanceAttenuationProxy.cpp	Fri Jun 15 03:10:57 2012 +0200
@@ -0,0 +1,241 @@
+/*
+* 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 Distance Attenuation proxy class
+*
+*/
+
+
+
+
+// INCLUDE FILES
+
+#ifdef _DEBUG
+#include <e32svr.h>
+#endif
+
+#include "DistanceAttenuationProxy.h"
+#include "DistanceAttenuationEventObserver.h"
+#include <CustomInterfaceUtility.h>
+
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// CDistanceAttenuationProxy::CDistanceAttenuationProxy
+// C++ default constructor can NOT contain any code, that
+// might leave.
+// -----------------------------------------------------------------------------
+//
+CDistanceAttenuationProxy::CDistanceAttenuationProxy(
+	TMMFMessageDestinationPckg aMessageHandler,
+	MCustomCommand& aCustomCommand,
+	CCustomInterfaceUtility* aCustomInterfaceUtility )
+	: 	iCustomCommand(&aCustomCommand),
+		iMessageHandler(aMessageHandler),
+		iCustomInterfaceUtility(aCustomInterfaceUtility)
+
+    {
+    }
+
+// Destructor
+CDistanceAttenuationProxy::~CDistanceAttenuationProxy()
+    {
+    // Remove the custom interface message handler before we destroy the proxy.
+    if(iCustomInterfaceUtility)
+        iCustomInterfaceUtility->RemoveCustomInterface(iMessageHandler);
+	delete iDistanceAttenuationEventObserver;
+	delete iCustomInterfaceUtility;
+	}
+
+// -----------------------------------------------------------------------------
+// CDistanceAttenuationProxy::NewL
+// Static function for creating an instance of the Distance Attenuation object.
+// -----------------------------------------------------------------------------
+//
+EXPORT_C CDistanceAttenuationProxy* CDistanceAttenuationProxy::NewL(
+	TMMFMessageDestinationPckg aMessageHandler,
+    MCustomCommand& aCustomCommand,
+    CCustomInterfaceUtility* aCustomInterfaceUtility )
+    {
+    CDistanceAttenuationProxy* self = new (ELeave) CDistanceAttenuationProxy(aMessageHandler, aCustomCommand, aCustomInterfaceUtility);
+    CleanupStack::PushL(self);
+    self->ConstructL();
+    CleanupStack::Pop(self);
+    return self;
+	}
+
+// -----------------------------------------------------------------------------
+// CDistanceAttenuationProxy::ConstructL
+// -----------------------------------------------------------------------------
+//
+void CDistanceAttenuationProxy::ConstructL()
+    {
+#ifdef _DEBUG
+    RDebug::Print(_L("CDistanceAttenuationProxy::ConstructL"));
+#endif
+    iDistanceAttenuationEventObserver = CDistanceAttenuationEventObserver::NewL(iMessageHandler, *iCustomCommand, *this);
+    StartObserver();
+    // sends a message to fetch initial data.
+    TEfDistanceAttenuationDataPckg dataPckgFrom;
+	iCustomCommand->CustomCommandSync(iMessageHandler, (TInt)EDaefInitialize, KNullDesC8, KNullDesC8, dataPckgFrom);
+	SetEffectData(dataPckgFrom);
+	}
+
+
+// -----------------------------------------------------------------------------
+// CDistanceAttenuationProxy::ApplyL
+// Apply the Distance Attenuation settings.
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void CDistanceAttenuationProxy::ApplyL()
+	{
+#ifdef _DEBUG
+    RDebug::Print(_L("CDistanceAttenuationProxy::Apply"));
+#endif
+
+	if ( !iHaveUpdateRights )
+		{
+		User::Leave(KErrAccessDenied);
+		}
+
+	iDistanceAttenuationData.iEnabled = iEnabled;
+	iDistanceAttenuationData.iEnforced = iEnforced;
+	iDistanceAttenuationData.iHaveUpdateRights = iHaveUpdateRights;
+	iCustomCommand->CustomCommandSync(iMessageHandler, (TInt)EDaefApply, DoEffectData(), KNullDesC8);
+	}
+
+// -----------------------------------------------------------------------------
+// CDistanceAttenuationProxy::StartObserver
+// Starts the event observer. The event observer monitors asynchronous events
+// from the message handler.
+// -----------------------------------------------------------------------------
+//
+void CDistanceAttenuationProxy::StartObserver()
+	{
+#ifdef _DEBUG
+    RDebug::Print(_L("CDistanceAttenuationProxy::StartObserver"));
+#endif
+
+	iDistanceAttenuationEventObserver->Start();
+	}
+
+// -----------------------------------------------------------------------------
+// CDistanceAttenuationProxy::DistanceAttenuationEvent
+// Checks which data member has changed and notify the observers.
+// -----------------------------------------------------------------------------
+//
+void CDistanceAttenuationProxy::DistanceAttenuationEvent(
+	const TDesC8& aBuffer )
+	{
+#ifdef _DEBUG
+    RDebug::Print(_L("CDistanceAttenuationProxy::DistanceAttenuationEvent"));
+#endif
+
+	TEfDistanceAttenuationDataPckg dataPckgFrom;
+	dataPckgFrom.Copy(aBuffer);
+	TEfDistanceAttenuation newDistanceAttenuationData = dataPckgFrom();
+
+	TUint8 event = 0;
+
+		if ( newDistanceAttenuationData.iEnabled != iDistanceAttenuationData.iEnabled )
+			{
+			iDistanceAttenuationData.iEnabled = newDistanceAttenuationData.iEnabled;
+			iEnabled = newDistanceAttenuationData.iEnabled;
+			if ( iDistanceAttenuationData.iEnabled )
+				{
+				event = MAudioEffectObserver::KEnabled;
+				}
+			else
+				{
+				event = MAudioEffectObserver::KDisabled;
+				}
+			}
+		else if ( newDistanceAttenuationData.iEnforced != iDistanceAttenuationData.iEnforced )
+			{
+			iDistanceAttenuationData.iEnforced = newDistanceAttenuationData.iEnforced;
+			iEnforced = newDistanceAttenuationData.iEnforced;
+			if ( iDistanceAttenuationData.iEnforced )
+				{
+				event = MAudioEffectObserver::KEnforced;
+				}
+			else
+				{
+				event = MAudioEffectObserver::KNotEnforced;
+				}
+			}
+		else if ( newDistanceAttenuationData.iHaveUpdateRights != iDistanceAttenuationData.iHaveUpdateRights )
+			{
+			iDistanceAttenuationData.iHaveUpdateRights = newDistanceAttenuationData.iHaveUpdateRights;
+			iHaveUpdateRights = newDistanceAttenuationData.iHaveUpdateRights;
+			if ( iDistanceAttenuationData.iHaveUpdateRights )
+				{
+				event = MAudioEffectObserver::KGainedUpdateRights;
+				}
+			else
+				{
+				event = MAudioEffectObserver::KLostUpdateRights;
+				}
+			}
+
+		else if ( newDistanceAttenuationData.iRMin != iDistanceAttenuationData.iRMin )
+			{
+			iDistanceAttenuationData.iRMin = newDistanceAttenuationData.iRMin;
+			event = MDistanceAttenuationObserver::KDistanceAttenuationChanged;
+			}
+		else if ( newDistanceAttenuationData.iRMax != iDistanceAttenuationData.iRMax )
+			{
+			iDistanceAttenuationData.iRMax = newDistanceAttenuationData.iRMax;
+			event = MDistanceAttenuationObserver::KDistanceAttenuationChanged;
+			}
+		else if ( newDistanceAttenuationData.iMuteAfterMax != iDistanceAttenuationData.iMuteAfterMax )
+			{
+			iDistanceAttenuationData.iMuteAfterMax = newDistanceAttenuationData.iMuteAfterMax;
+			event = MDistanceAttenuationObserver::KDistanceAttenuationChanged;
+			}
+		else if ( newDistanceAttenuationData.iRollOffFactor != iDistanceAttenuationData.iRollOffFactor )
+			{
+			iDistanceAttenuationData.iRollOffFactor = newDistanceAttenuationData.iRollOffFactor;
+			event = MDistanceAttenuationObserver::KDistanceAttenuationChanged;
+			}
+		else if ( newDistanceAttenuationData.iRoomRollOffFactor != iDistanceAttenuationData.iRoomRollOffFactor )
+			{
+			iDistanceAttenuationData.iRoomRollOffFactor = newDistanceAttenuationData.iRoomRollOffFactor;
+			event = MDistanceAttenuationObserver::KDistanceAttenuationChanged;
+			}
+		else if ( newDistanceAttenuationData.iRollOffFactorMax != iDistanceAttenuationData.iRollOffFactorMax )
+			{
+			iDistanceAttenuationData.iRollOffFactorMax = newDistanceAttenuationData.iRollOffFactorMax;
+			event = MDistanceAttenuationObserver::KDistanceAttenuationChanged;
+			}
+		else if ( newDistanceAttenuationData.iRoomRollOffFactorMax != iDistanceAttenuationData.iRoomRollOffFactorMax )
+			{
+			iDistanceAttenuationData.iRoomRollOffFactorMax = newDistanceAttenuationData.iRoomRollOffFactorMax;
+			event = MDistanceAttenuationObserver::KDistanceAttenuationChanged;
+			}
+
+	if (!event)
+		return;
+
+	for ( TInt i = 0; i < iObservers.Count(); i++ )
+		{
+		iObservers[i]->EffectChanged(this, event);
+		}
+	}
+
+
+// ========================== OTHER EXPORTED FUNCTIONS =========================
+
+
+// End of File
+