diff -r 000000000000 -r bde4ae8d615e os/mm/mmhais/refacladapt/src/shared/mgainhelper.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/os/mm/mmhais/refacladapt/src/shared/mgainhelper.h	Fri Jun 15 03:10:57 2012 +0200
@@ -0,0 +1,41 @@
+/*
+* Copyright (c) 2006-2009 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 MGAINHELPER_H
+#define MGAINHELPER_H
+
+#include <a3f/a3fbase.h>
+
+/**
+ */
+class MGainHelper
+	{
+public:
+	
+	// Allows retrieve the gain applied to low level adaptation
+	virtual TInt GetGain(TInt& aGain) const = 0;
+
+	// Set the gain to the low level adaptation
+	virtual TInt SetGain(RArray<TAudioChannelGain>& aChannels) = 0;
+
+	//Select the ramp operation and the volump ramp duration. 
+	virtual TInt ConfigureRamp(TUid aRampOperation, const TTimeIntervalMicroSeconds& aRampDuration) = 0;
+	};
+
+#endif // MGAINHELPER_H