--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/devsoundextensions/effects/SrcDoppler/SourceDopplerProxy/Src/SourceDopplerEventObserver.h	Tue Feb 02 01:56:55 2010 +0200
@@ -0,0 +1,99 @@
+/*
+* 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:   Definition of the event observer class
+*
+*/
+
+
+
+
+#ifndef CSOURCEDOPPLEREVENTOBSERVER_H
+#define CSOURCEDOPPLEREVENTOBSERVER_H
+
+// INCLUDES
+#include <e32base.h>
+#include "SourceDopplerProxy.h"
+
+
+// CLASS DECLARATION
+
+/**
+*  Doppler event observer provides encapsulates a monitoring request towards the message handler.
+*
+*  @lib SourceDopplerProxy.lib
+*  @since 3.0
+*/
+class CSourceDopplerEventObserver : public CActive
+    {
+    public: // Constructors and destructor
+
+        /**
+        * Two-phased constructor.
+        */
+        static CSourceDopplerEventObserver* NewL(TMMFMessageDestinationPckg aMessageHandler, MCustomCommand& aCustomCommand,
+        								  MSourceDopplerCallback& aCallback);
+
+        /**
+        * Destructor.
+        */
+        virtual ~CSourceDopplerEventObserver();
+
+    public: // New functions
+
+        /**
+        * Start event monitoring
+        * @since 3.0
+        */
+        void Start();
+
+       	/**
+        * Stop event monitoring
+        * @since 3.0
+        */
+        void Stop();
+
+
+    private:
+
+        /**
+        * C++ default constructor.
+        */
+        CSourceDopplerEventObserver();
+
+        /**
+        * By default Symbian 2nd phase constructor is private.
+        */
+        void ConstructL(TMMFMessageDestinationPckg aMessageHandler, MCustomCommand& aCustomCommand,
+        				MSourceDopplerCallback& aCallback);
+
+        void RunL();
+
+        void DoCancel();
+
+    private:
+
+		// Pointer to custom command utility
+		MCustomCommand* iCustomCommand;
+		// Message handler handle
+		TMMFMessageDestinationPckg iMessageHandler;
+		// Doppler change event Callbacks
+		MSourceDopplerCallback* iCallback;
+		// Data package received from server
+		TEfDopplerDataPckg iDataPckgFrom;
+		//
+		TBool iStopped;
+	};
+
+#endif 		// CDOPPLEREVENTOBSERVER_H
+