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/*
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* Copyright (c) 2004 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: Definition of the Audio Effect Observer class.
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*
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*/
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#ifndef AUDIOEFFECTOBSERVER_H
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#define AUDIOEFFECTOBSERVER_H
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// CLASS DECLARATION
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/**
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* Interface class to be implemented by objects that are interested in receiving events from
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* audio effect.
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*
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* @since 3.0
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*/
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class MAudioEffectObserver
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{
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public:
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static const TUint KEnabled = 1; // The effect is enabled.
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static const TUint KDisabled = 2; // The effect is disabled
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static const TUint KEnforced = 3; // The effect is enforced
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static const TUint KNotEnforced = 4; // The effect is not enforced
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static const TUint KLostUpdateRights = 5; // The effect has lost update rights
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static const TUint KGainedUpdateRights = 6; // The effect has gained update rights
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static const TUint KSpecificEffectBase = 20; // Offset to specific effect events
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/**
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* Invoked by the audio effect object when the status of the audio effect has changed.
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* @since 3.0
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* @param aObservedEffect The effect that changed
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* @param aEvent The specific event Id of the effect that changed.
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*/
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virtual void EffectChanged( const CAudioEffect* aObservedEffect, TUint8 aEvent ) = 0;
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};
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#endif // AUDIOEFFECTOBSERVER_H
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// End of File
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