diff -r 73a1feb507fb -r bc78a40cd63c mmsharing/mmshengine/inc/musengsessionobserver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmsharing/mmshengine/inc/musengsessionobserver.h	Wed Sep 01 12:31:01 2010 +0100
@@ -0,0 +1,102 @@
+/*
+* Copyright (c) 2005 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: 
+*
+*/
+
+
+#ifndef MUSHENGSESSIONOBSERVER_H
+#define MUSHENGSESSIONOBSERVER_H
+
+
+#include <e32std.h>
+
+// CLASS DECLARATION
+
+/**
+* An interface to be implemented by users of Multimedia Sharing Engine if 
+* they wish to receive events from session and streaming state changes.
+*
+* @lib museng.lib
+* @since S60 v3.2
+*/
+class MMusEngSessionObserver
+    {
+
+    public:
+
+        /**
+        * Indicates that incoming or outgoing session has been established.
+        *
+        * @since S60 v3.2
+        */
+        virtual void SessionEstablished() = 0;
+
+        /**
+        * Indicates that session has been terminated.
+        * After this function call session object must deleted.
+        * Function is synchronous, use active object which actives
+        * delete.
+        *
+        * @since S60 v3.2
+        */
+        virtual void SessionTerminated() = 0;
+
+        /**
+        * Current session has lost network connection.
+        *
+        * @since S60 v3.2
+        */
+        virtual void SessionConnectionLost() = 0; 
+
+        /**
+        * Undefined exception has occurred. Session is useless and must be
+        * deleted. Function is synchronous, use active object which actives
+        * delete.
+        *
+        * @since S60 v3.2
+        */
+        virtual void SessionFailed() = 0;
+
+        /**
+        * Current stream state is changed to idle meaning that
+        * we are not sending or receiving RTP.
+        *
+        * @since S60 v3.2
+        */
+        virtual void StreamIdle() = 0;
+
+        /**
+        * Current session state is changed to idle.
+        *
+        * @since S60 v3.2
+        */
+        virtual void StreamStreaming() = 0;        
+
+        /**
+        * Update time information of this session
+        *
+        * @since S60 v3.2
+        */
+        virtual void SessionTimeChanged( const TTimeIntervalSeconds& aSeconds ) = 0;
+        
+        /**
+        * RTCP inactivity timeout has occurred.
+        *
+        * @since S60 v3.2
+        */
+        virtual void InactivityTimeout() = 0;
+    };
+
+#endif
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