/** 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