--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mobilemessaging/audiomsg/inc/amsvolobserver.h	Thu Dec 17 08:44:11 2009 +0200
@@ -0,0 +1,53 @@
+/*
+* Copyright (c) 2005-2006 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:   Observer class for speaker functions
+*
+*/
+
+
+
+#ifndef __AMSVOLOBSERVER_H
+#define __AMSVOLOBSERVER_H
+ 
+
+// CLASS DEFINITION
+
+/**
+ *  This class defines a generic observer interface.
+ *  Indicates navipane volume and speaker selection.
+ *
+ *  @lib audiomessge.exe
+ *  @since S60 v3.1
+ */
+class MAmsVolumeObserver
+	{
+	public: // new methods
+
+		/**
+		* Called to notify a change in the observed volume state.
+		*/
+		virtual void UpdateNaviVol( TInt aCurrentVolumeValue ) = 0;
+
+        virtual TInt GetVolume()= 0;
+        
+		/**
+		* Called to notify a change in the observed speaker state.
+		*/
+		virtual void SetSpeakerOutput( TBool aEarpiece ) = 0;
+	
+	};
+
+
+#endif  // __AMSVOLOBSERVER_H
+