--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/devsoundextensions/effects/RoomLevel/RoomLevelProxy/Src/RoomLevelProxy.cpp	Tue Feb 02 01:56:55 2010 +0200
@@ -0,0 +1,269 @@
+/*
+* 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 RoomLevel proxy class
+*
+*/
+
+
+
+
+// INCLUDE FILES
+
+#ifdef _DEBUG
+#include <e32svr.h>
+#endif
+
+#include "RoomLevelProxy.h"
+#include "RoomLevelEventObserver.h"
+#include <CustomInterfaceUtility.h>
+#include "EnvironmentalReverbProxy.h"
+
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// CRoomLevelProxy::CRoomLevelProxy
+// C++ default constructor can NOT contain any code, that
+// might leave.
+// -----------------------------------------------------------------------------
+//
+CRoomLevelProxy::CRoomLevelProxy(
+	TMMFMessageDestinationPckg aMessageHandler,
+	MCustomCommand& aCustomCommand,
+	CCustomInterfaceUtility* aCustomInterfaceUtility )
+	: 	iCustomCommand(&aCustomCommand),
+		iMessageHandler(aMessageHandler),
+		iCustomInterfaceUtility(aCustomInterfaceUtility)
+
+    {
+    }
+
+// Destructor
+CRoomLevelProxy::~CRoomLevelProxy()
+  {
+
+    // Remove the custom interface message handler before we destroy the proxy.
+    if (iClientReverb)
+       ((CEnvironmentalReverbProxy*)iClientReverb)->RoomLevelDetached(*this);
+    if (iCustomInterfaceUtility)
+        iCustomInterfaceUtility->RemoveCustomInterface(iMessageHandler);
+ 	delete iRoomLevelEventObserver;
+	delete iCustomInterfaceUtility;
+
+	}
+
+// -----------------------------------------------------------------------------
+// CRoomLevelProxy::NewL
+// Static function for creating an instance of the Environmental RoomLevel object.
+// -----------------------------------------------------------------------------
+//
+EXPORT_C CRoomLevelProxy* CRoomLevelProxy::NewL(
+	TMMFMessageDestinationPckg aMessageHandler,
+    MCustomCommand& aCustomCommand,
+    CCustomInterfaceUtility* aCustomInterfaceUtility )
+    {
+    CRoomLevelProxy* self = new (ELeave) CRoomLevelProxy(aMessageHandler, aCustomCommand, aCustomInterfaceUtility);
+    CleanupStack::PushL(self);
+    self->ConstructL();
+    CleanupStack::Pop(self);
+     
+    return self;
+	}
+
+// -----------------------------------------------------------------------------
+// CRoomLevelProxy::ConstructL
+// -----------------------------------------------------------------------------
+//
+void CRoomLevelProxy::ConstructL()
+    {
+#ifdef _DEBUG
+    RDebug::Print(_L("CRoomLevelProxy::ConstructL"));
+#endif
+    iRoomLevelEventObserver = CRoomLevelEventObserver::NewL(iMessageHandler, *iCustomCommand, *this);
+    StartObserver();
+    // sends a message to fetch initial data.
+    TEfRoomLevelDataPckg dataPckgFrom;
+	iCustomCommand->CustomCommandSync(iMessageHandler, (TInt)ERoomInitialize, KNullDesC8, KNullDesC8, dataPckgFrom);
+	SetEffectData(dataPckgFrom);
+
+	}
+
+
+// -----------------------------------------------------------------------------
+// CRoomLevelProxy::ApplyL
+// Apply the Environmental RoomLevel settings.
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void CRoomLevelProxy::ApplyL()
+	{
+#ifdef _DEBUG
+    RDebug::Print(_L("CRoomLevelProxy::Apply"));
+#endif
+
+	if ( !iHaveUpdateRights )
+		{
+		User::Leave(KErrAccessDenied);
+		}
+	
+	iRoomLevelData.iEnabled = iEnabled;
+	iRoomLevelData.iEnforced = iEnforced;
+	iRoomLevelData.iHaveUpdateRights = iHaveUpdateRights;
+	iCustomCommand->CustomCommandSync(iMessageHandler, (TInt)ERoomApply, DoEffectData(), KNullDesC8);
+
+	}
+
+// -----------------------------------------------------------------------------
+// CRoomLevelProxy::StartObserver
+// Starts the event observer. The event observer monitors asynchronous events
+// from the message handler.
+// -----------------------------------------------------------------------------
+//
+void CRoomLevelProxy::StartObserver()
+	{
+#ifdef _DEBUG
+    RDebug::Print(_L("CRoomLevelProxy::StartObserver"));
+#endif
+
+	iRoomLevelEventObserver->Start();
+	}
+
+// -----------------------------------------------------------------------------
+// CRoomLevelProxy::RoomLevelEvent
+// Checks which data member has changed and notify the observers.
+// -----------------------------------------------------------------------------
+//
+void CRoomLevelProxy::RoomLevelEvent(
+	const TDesC8& aBuffer )
+	{
+#ifdef _DEBUG
+    RDebug::Print(_L("CRoomLevelProxy::RoomLevelEvent"));
+#endif
+
+	TEfRoomLevelDataPckg dataPckgFrom;
+	dataPckgFrom.Copy(aBuffer);
+	TEfRoomLevel newRoomLevelData = dataPckgFrom();  
+
+	TUint8 event = 0;
+
+	if ( newRoomLevelData.iEnabled != iRoomLevelData.iEnabled )
+		{
+		iRoomLevelData.iEnabled = newRoomLevelData.iEnabled;
+		iEnabled = newRoomLevelData.iEnabled;
+		if ( iRoomLevelData.iEnabled )
+			{
+			event = MAudioEffectObserver::KEnabled;
+			}
+		else
+			{
+			event = MAudioEffectObserver::KDisabled;
+			}
+		}
+	else if ( newRoomLevelData.iEnforced != iRoomLevelData.iEnforced )
+		{
+		iRoomLevelData.iEnforced = newRoomLevelData.iEnforced;
+		iEnforced = newRoomLevelData.iEnforced;
+		if ( iRoomLevelData.iEnforced )
+			{
+			event = MAudioEffectObserver::KEnforced;
+			}
+		else
+			{
+			event = MAudioEffectObserver::KNotEnforced;
+			}
+		}
+	else if ( newRoomLevelData.iHaveUpdateRights != iRoomLevelData.iHaveUpdateRights )
+		{
+		iRoomLevelData.iHaveUpdateRights = newRoomLevelData.iHaveUpdateRights;
+		iHaveUpdateRights = newRoomLevelData.iHaveUpdateRights;
+		if ( iRoomLevelData.iHaveUpdateRights )
+			{
+			event = MAudioEffectObserver::KGainedUpdateRights;
+			}
+		else
+			{
+			event = MAudioEffectObserver::KLostUpdateRights;
+			}
+		}
+		
+	else if ( newRoomLevelData.iEnvironmentalReverbId != iRoomLevelData.iEnvironmentalReverbId )
+		{
+		iRoomLevelData.iEnvironmentalReverbId = newRoomLevelData.iEnvironmentalReverbId;
+//		event = MRoomLevelObserver::KRoomLevelChanged;
+		}
+		
+	else if ( newRoomLevelData.iStreamRoomLevel != iRoomLevelData.iStreamRoomLevel )
+		{
+		iRoomLevelData.iStreamRoomLevel = newRoomLevelData.iStreamRoomLevel;
+		event = MRoomLevelObserver::KRoomLevelChanged;
+		}
+	else if ( newRoomLevelData.iStreamMinRoomLevel != iRoomLevelData.iStreamMinRoomLevel )
+		{
+		iRoomLevelData.iStreamMinRoomLevel = newRoomLevelData.iStreamMinRoomLevel;
+//		event = MRoomLevelObserver::KMinRoomLevelChanged;
+		}
+	else if ( newRoomLevelData.iStreamMaxRoomLevel != iRoomLevelData.iStreamMaxRoomLevel )
+		{
+		iRoomLevelData.iStreamMaxRoomLevel = newRoomLevelData.iStreamMaxRoomLevel;
+//		event = MRoomLevelObserver::KMinRoomLevelChanged;
+		}
+
+  
+	if (!event)
+		return;
+
+	for ( TInt i = 0; i < iObservers.Count(); i++ )
+		{
+		iObservers[i]->EffectChanged(this, event);
+		}
+	}
+
+
+// -----------------------------------------------------------------------------
+// CRoomLevelProxy::AttachReverb
+// Set room level's reverb ID
+// -----------------------------------------------------------------------------
+//
+TInt CRoomLevelProxy::AttachReverb(CEnvironmentalReverb& aReverb)
+{
+	TInt err(KErrNone);
+	iRoomLevelData.iEnvironmentalReverbId = ((CEnvironmentalReverbProxy&)aReverb).GetUniqueId();
+    TRAP(err,(((CEnvironmentalReverbProxy&)(aReverb)).RoomLevelAttached(*this)));
+
+    return err;
+}
+
+
+
+// -----------------------------------------------------------------------------
+// CRoomLevelProxy::DettachReverb
+// 
+// -----------------------------------------------------------------------------
+//
+TInt CRoomLevelProxy::DettachReverb(CEnvironmentalReverb& aReverb)
+{
+    TInt status(KErrNone);
+    iClientReverb = NULL;
+    if ( iCustomInterfaceUtility )
+        {
+        iCustomInterfaceUtility->RemoveCustomInterface(iMessageHandler);
+        }
+    TRAP(status,(((CEnvironmentalReverbProxy&)(aReverb)).RoomLevelDetached(*this)));
+    return status;
+}
+
+// ========================== OTHER EXPORTED FUNCTIONS =========================
+
+// End of File
+
+