--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/natfw/natfwconnectionmultiplexer/inc/mncmmediasourceobserver.h	Tue Feb 02 01:04:58 2010 +0200
@@ -0,0 +1,73 @@
+/*
+* Copyright (c) 2007-2008 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 for media source(s)
+*
+*/
+
+
+
+
+#ifndef M_MNCMMEDIASOURCEOBSERVER_H
+#define M_MNCMMEDIASOURCEOBSERVER_H
+
+#include <e32base.h>
+
+/**
+ *  Observer for media source(s)
+ *
+ *  Used by CNcmConnectionMultiplexer for receiving wrapper sending
+ *  error notifies
+ *
+ *  @lib connectionmux.lib
+ *  @since S60 v3.2
+ */
+class MNcmMediaSourceObserver
+    {
+
+public:
+
+    /**
+     * Called by Media Source after wrapper has had sending error
+     *
+     * @since   S60 v3.2
+     * @param   aStreamId           The ID identifying stream   
+     * @param   aError              The error code
+     * @return  void
+     */ 
+    virtual void WrapperSenderError( TUint aStreamId, TInt aError ) = 0;
+
+    /**
+     * Called by Media Source if current local port is already in use.
+     * Gets new free port.
+     *
+     * @since   S60 v3.2
+     * @param   aStreamId           The ID identifying stream   
+     * @param   aPort               New free port
+     * @return  void
+     */     
+    virtual void GetFreePort( TUint aStreamId, TUint& aPort ) = 0;
+    
+    /**
+     * Notifies that the first media packet is sent to
+     * the remote end.
+     *
+     * @since   S60 v3.2
+     * @param   aStreamId           The ID identifying stream
+     * @return  void
+     */     
+    virtual void FirstMediaPacketSent( TUint aStreamId ) = 0;
+    };
+
+
+#endif // M_MNCMMEDIASOURCEOBSERVER_H