--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ipappsrv_plat/media_control_api/inc/mmccctrlobserver.h	Tue Feb 02 01:04:58 2010 +0200
@@ -0,0 +1,166 @@
+/*
+* Copyright (c) 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 events.
+*
+*/
+
+
+
+
+#ifndef MMCCCTRLOBSERVER_H
+#define MMCCCTRLOBSERVER_H
+
+// INCLUDES
+#include <e32def.h>
+#include <mmf/common/mmfbase.h>
+#include <mmccevents.h>
+
+/**
+*  Observer interface for clients to receive events from MCC.
+*
+*  @lib mmccinterface.lib
+*/
+class MMccCtrlObserver
+    {
+public:
+    
+    /**
+    * Callback function to receive media events
+    * @param aSignal Received media events
+    * @return void
+    */
+    virtual void MccEventReceived( const TMccEvent& aEvent ) = 0;
+    
+    /**
+    * Callback function to receive media started event.
+    * @param aSessionId Session ID
+    * @param aLinkId Link ID
+    * @param aStreamId Stream ID
+    * @param aSinkSourceId Sink or source ID
+    */
+    virtual void MccMediaStarted( TUint32 aSessionId,
+                                  TUint32 aLinkId,     
+                                  TUint32 aStreamId,
+                                  TUint32 aSinkSourceId ) = 0;
+    
+    /**
+    * Callback function to receive media stopped event.
+    * @param aSessionId Session ID
+    * @param aLinkId Link ID
+    * @param aStreamId Stream ID
+    * @param aSinkSourceId Sink or source ID
+    */
+    virtual void MccMediaStopped( TUint32 aSessionId,
+                                  TUint32 aLinkId,
+                                  TUint32 aStreamId,
+                                  TUint32 aSinkSourceId ) = 0;
+
+    /**
+    * Callback function to receive media paused event.
+    * @param aSessionId Session ID
+    * @param aLinkId Link ID
+    * @param aStreamId Stream ID
+    * @param aSinkSourceId Sink or source ID
+    */
+    virtual void MccMediaPaused( TUint32 aSessionId,
+                                 TUint32 aLinkId,
+                                 TUint32 aStreamId,
+                                 TUint32 aSinkSourceId ) = 0;
+
+    /**
+    * Callback function to receive media resumed event.
+    * @param aSessionId Session ID
+    * @param aLinkId Link ID
+    * @param aStreamId Stream ID
+    * @param aSinkSourceId Sink or source ID
+    */
+    virtual void MccMediaResumed( TUint32 aSessionId,
+                                  TUint32 aLinkId,
+                                  TUint32 aStreamId,
+                                  TUint32 aSinkSourceId ) = 0;
+
+    /**
+    * Callback function to receive media prepared event.
+    * @param aSessionId Session ID
+    * @param aLinkId Link ID
+    * @param aStreamId Stream ID
+    * @param aSinkSourceId Sink or source ID
+    */
+    virtual void MccMediaPrepared( TUint32 aSessionId,
+                                   TUint32 aLinkId,
+                                   TUint32 aStreamId,
+                                   TUint32 aSinkSourceId ) = 0;
+
+    /**
+    * Callback function to receive media inactivity event.
+    * @param aSessionId Session ID
+    * @param aLinkId Link ID
+    * @param aStreamId Stream ID
+    * @param aSinkSourceId Sink or source ID
+    */
+    virtual void MccMediaInactive( TUint32 aSessionId,
+                                   TUint32 aLinkId,
+                                   TUint32 aStreamId,
+                                   TUint32 aSinkSourceId ) = 0;
+
+    /**
+    * Callback function to receive media activity event. The
+    * function is called when the first RTP packet is received
+    * by a downlink stream.
+    * @param aSessionId Session ID
+    * @param aLinkId Link ID
+    * @param aStreamId Stream ID
+    * @param aSinkSourceId Sink or source ID
+    */
+    virtual void MccMediaActive( TUint32 aSessionId,
+                                 TUint32 aLinkId,
+                                 TUint32 aStreamId,
+                                 TUint32 aSinkSourceId ) = 0;
+
+    
+    /**
+    * Callback function to receive error event.
+    * @param aError Error code
+    * @param aSessionId Session ID
+    * @param aLinkId Link ID
+    * @param aSinkSourceId Sink or source ID
+    */
+    virtual void MccCtrlError( TInt aError,
+                               TUint32 aSessionId,
+                               TUint32 aLinkId,
+                               TUint32 aStreamId,
+                               TUint32 aSinkSourceId ) = 0;
+    
+    
+    /**
+     * Callback function to notify client of unknown media packet.
+     * Called when packet with unknown payload type is 
+     * received by a downlink stream.
+     *
+     * @since Series 60 3.0
+     * @param aSessionId Session ID
+     * @param aLinkId Link ID
+     * @param aStreamId Stream ID
+     * @param aSinkSourceId Sink or source ID
+     * @param aPayloadType Payload type of received packet
+     * @return void
+     */
+    inline virtual void UnknownMediaReceived( TUint32 /*aSessionId*/,
+                                       TUint32 /*aLinkId*/,
+                                       TUint32 /*aStreamId*/,
+                                       TUint32 /*aSinkSourceId*/,
+                                       TUint8 /*aPayloadType*/ ){};                           
+};
+    
+#endif    // MMCCCTRLOBSERVER_H