diff -r 000000000000 -r bde4ae8d615e os/mm/devsoundextensions/effects/StereoWidening/StereoWideningProxy/Src/StereoWideningProxy.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/os/mm/devsoundextensions/effects/StereoWidening/StereoWideningProxy/Src/StereoWideningProxy.cpp	Fri Jun 15 03:10:57 2012 +0200
@@ -0,0 +1,210 @@
+/*
+* 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
+
+