2 * Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
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".
9 * Initial Contributors:
10 * Nokia Corporation - initial contribution.
15 * Save as expressly licensed to you by Symbian Software Ltd, all rights reserved.
28 #ifndef MAUDIOCODECOBSERVER_H
29 #define MAUDIOCODECOBSERVER_H
32 #include <a3f/a3fbase.h>
35 * An interface to a set of AudioGainControl callback functions.
37 * This serves as the method of communication between the client and the
40 * The class is a mixin and is intended to be inherited by the client class
41 * that is interested in observing the Gain operations. The functions
42 * encapsulated by this class are called when specific events occur while
46 class MAudioCodecObserver
51 * Callback showing completion SetSampleRate().
53 * @param aError will be KErrNone if the action succeeded, otherwise it will be a system error
54 * specific errors to be defined.
56 virtual void SampleRateSet(TInt aError)=0;
59 * Callback showing completion SetMode().
61 * @param aError will be KErrNone if the action succeeded, otherwise it will be a system error
62 * specific errors to be defined.
64 virtual void ModeSet(TInt aError)=0;
67 * Callback showing completion GetSupportedSampleRates().
69 * @param Error will be KErrNone if the action succeeded, otherwise it will be a system error
70 * specific errors to be defined. If aError is not KErrNone, then the state of aSupportedRates is undefined.
72 virtual void GetSupportedSampleRatesComplete (TInt aError)=0;
75 * Callback showing completion GetSupportedModes().
77 * @param aError will be KErrNone if the action succeeded, otherwise it will be a system error
78 * specific errors to be defined. If aError is not KErrNone, then the state of aSupportedModes is undefined.
80 virtual void GetSupportedModesComplete (TInt aError)=0;
84 #endif // MAUDIOCODECOBSERVER_H