radioengine/engine/api/mradioengineobserver.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 19 Mar 2010 09:29:04 +0200
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/*
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* Copyright (c) 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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*
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*/
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#ifndef MRADIOENGINEOBSERVER_H
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#define MRADIOENGINEOBSERVER_H
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#include "radioenginedef.h"
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/**
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* Observer for radio state changes.
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*/
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NONSHARABLE_CLASS( MRadioEngineObserver )
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    {
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    public:
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    virtual void PowerEventL( TBool aPowerState, TInt aErrorCode ) = 0;
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    /**
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    * Notifies when frequency changes
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    * @param aFrequency The new frequency
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    * @param aReason reason why the frequency changed
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    * @param aErrorCode code related to state change
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    */
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    virtual void FrequencyEventL( TUint32 aFrequency, RadioEngine::TRadioFrequencyEventReason aReason, TInt aErrorCode ) = 0;
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    virtual void VolumeEventL( TInt aVolume, TInt aErrorCode ) = 0;
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    virtual void MuteEventL( TBool aMuteState, TInt aErrorCode ) = 0;
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    virtual void AudioModeEventL( TInt aAudioMode, TInt aErrorCode ) = 0;
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    virtual void AntennaEventL( TBool aAntennaAttached, TInt aErrorCode ) = 0;
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    /**
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    * Notifies when audio routing changes
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    * @param aAudioDestination The new output device
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    * @param aErrorCode Error code related to state change
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    */
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    virtual void AudioRoutingEventL( TInt aAudioDestination, TInt aErrorCode ) = 0;
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    /**
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    * Notifies about seeking events
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    * @param aSeekingState The seeking state
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    * @param aErrorCode KErrNone for successful starting or completion of seeking
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    */
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    virtual void SeekingEventL( TInt aSeekingState, TInt aErrorCode ) = 0;
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    /**
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     * Notifies about region changes
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     *
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     * @param aRegion The ID of the new region
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     * @param aErrorCode Region event error code
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     */
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    virtual void RegionEventL( TInt aRegion, TInt aErrorCode ) = 0;
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    /**
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     * Notifies about fm transmitter activating
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     */
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    virtual void FmTransmitterEventL( TBool aActive ) = 0;
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    };
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#endif // MRADIOENGINEOBSERVER_H