1 /*

     2 * Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 *

    16 */

    17 

    18 

    19 

    20 #ifndef MGAINHELPER_H

    21 #define MGAINHELPER_H

    22 

    23 #include <a3f/a3fbase.h>

    24 

    25 /**

    26  */

    27 class MGainHelper

    28 	{

    29 public:

    30 	

    31 	// Allows retrieve the gain applied to low level adaptation

    32 	virtual TInt GetGain(TInt& aGain) const = 0;

    33 

    34 	// Set the gain to the low level adaptation

    35 	virtual TInt SetGain(RArray<TAudioChannelGain>& aChannels) = 0;

    36 

    37 	//Select the ramp operation and the volump ramp duration. 

    38 	virtual TInt ConfigureRamp(TUid aRampOperation, const TTimeIntervalMicroSeconds& aRampDuration) = 0;

    39 	};

    40 

    41 #endif // MGAINHELPER_H