diff -r 000000000000 -r bde4ae8d615e os/mm/devsound/devsoundrefplugin/src/platsec/server/AudioServer/MmfDevSoundSessionXtnd.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/os/mm/devsound/devsoundrefplugin/src/platsec/server/AudioServer/MmfDevSoundSessionXtnd.h	Fri Jun 15 03:10:57 2012 +0200
@@ -0,0 +1,66 @@
+// Copyright (c) 2004-2009 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 __MMFDEVSOUNDSESSIONTND_H__
+#define __MMFDEVSOUNDSESSIONTND_H__
+
+#include "MmfDevSoundSession.h"
+#include "MmfDevSoundInfo.h"
+
+/*
+ *
+ *	Class Name:	CMMFDevSoundSessionXtnd
+ *
+ *  This class provides an extended interface for CMMFDevSound - intended
+ *  to provide additional calls that are applicable to a particular implementation
+ *  This version is built on RMdaDevSound
+ */
+class CMMFDevSoundSessionXtnd;	// declared here.
+
+NONSHARABLE_CLASS( CMMFDevSoundSessionXtnd ) : public CMMFDevSoundSession
+	{
+public:
+
+	// Interface for Audio Policy
+	// Sets id for this DevSound instance
+	void SetDevSoundId(TInt aDevSoundId);
+	// Returns info about this DevSound instance
+	TMMFDevSoundInfo DevSoundInfo();
+	// Called by Audio Policy Server when play reqeust is granted
+	void StartPlayDataL();
+	// Called by Audio Policy Server when record reqeust is granted
+	void StartRecordDataL();
+	// Called by Audio Policy Server when play tone reqeust is granted
+	void StartPlayToneL();
+	// Called by Audio Policy Server when play dual tone request is granted
+	void StartPlayDualToneL();
+	// Called by Audio Policy Server when play DTMF reqeust is granted
+	void StartPlayDTMFStringL();
+	// Called by Audio Policy Server when play tone sequence reqeust is granted
+	void StartPlayToneSequenceL();
+	// Called by Audio Policy Server when DevSound instance looses device
+	void SendEvent(const TMMFEvent& aEvent);
+	// Updates the total bytes played from audio device
+	void UpdateBytesPlayed();
+
+	// CMMFHwDevice implementation:
+	TInt FillThisBuffer(CMMFBuffer& aHwBuffer);
+	TInt EmptyThisBuffer(CMMFBuffer& aHwBuffer);
+	TInt DeviceMessage(TDesC8& aMsg);
+	void DeviceStopped();
+	// CMMFHwDevice implementation ends
+	};
+
+#endif // __MMFDEVSOUNDSESSIONTND_H__