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/*
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* Copyright (c) 2007-2009 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:
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* Save as expressly licensed to you by Symbian Software Ltd, all rights reserved.
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*
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*
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*/
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/**
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@file
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@publishedPartner
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@released
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*/
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#ifndef MAUDIOCODECOBSERVER_H
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#define MAUDIOCODECOBSERVER_H
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#include <e32base.h>
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#include <a3f/a3fbase.h>
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/**
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* An interface to a set of AudioGainControl callback functions.
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*
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* This serves as the method of communication between the client and the
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* AudioGainControl.
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*
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* The class is a mixin and is intended to be inherited by the client class
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* that is interested in observing the Gain operations. The functions
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* encapsulated by this class are called when specific events occur while
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* processing audio.
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*
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*/
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class MAudioCodecObserver
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{
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public:
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/**
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* Callback showing completion SetSampleRate().
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*
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* @param aError will be KErrNone if the action succeeded, otherwise it will be a system error
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* specific errors to be defined.
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*/
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virtual void SampleRateSet(TInt aError)=0;
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/**
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* Callback showing completion SetMode().
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*
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* @param aError will be KErrNone if the action succeeded, otherwise it will be a system error
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* specific errors to be defined.
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*/
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virtual void ModeSet(TInt aError)=0;
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/**
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* Callback showing completion GetSupportedSampleRates().
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*
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* @param Error will be KErrNone if the action succeeded, otherwise it will be a system error
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* specific errors to be defined. If aError is not KErrNone, then the state of aSupportedRates is undefined.
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*/
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virtual void GetSupportedSampleRatesComplete (TInt aError)=0;
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/**
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* Callback showing completion GetSupportedModes().
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*
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* @param aError will be KErrNone if the action succeeded, otherwise it will be a system error
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* specific errors to be defined. If aError is not KErrNone, then the state of aSupportedModes is undefined.
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*/
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virtual void GetSupportedModesComplete (TInt aError)=0;
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};
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#endif // MAUDIOCODECOBSERVER_H
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