mmserv/voipaudioservices/VoIPIntfc/inc/VoIPDtmfTonePlayerImpl.h
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/*
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 * Copyright (c) 2007-2008 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:  VOIP Audio Services
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 *
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 */
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#ifndef VOIPDTMFTONEPLAYERIMPL_H
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#define VOIPDTMFTONEPLAYERIMPL_H
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// INCLUDES
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#include <voipdtmftoneplayer.h>
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#include "VoIPQueueHandler.h"
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// CONSTANTS
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// FORWARD DECLARATIONS
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class CVoIPAudioUplinkStream;
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class CVoIPAudioDownlinkStream;
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class CVoIPDataBuffer;
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class RVoIPAudioSession;
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/**
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 *  CDTMFTonePlayerImpl class
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 *
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 *  DTMF Tone Player class
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 *
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 *  @lib VoIPAudioIntfc.dll
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 */
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NONSHARABLE_CLASS(CDTMFTonePlayerImpl) : public CBase,
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        public CDTMFTonePlayer,
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        public MQueueHandlerObserver
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    {
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    enum TStreamType
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        {
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        EDownlink,
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        EUplink
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        };
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public:
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    /**
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     * 2-phase constructor
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     *
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     *
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     * @param none
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     * @return CDTMFTonePlayerImpl* -
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     */
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    static CDTMFTonePlayerImpl* NewL();
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    /**
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     * Destructor
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     *
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     *
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     * @param none
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     * @return none
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     */
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    virtual ~CDTMFTonePlayerImpl();
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    /**
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     * ?description
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     *
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     *
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     * @param none
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     * @return TInt
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     */
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    TInt Open(MDTMFToneObserver& aObserver);
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    /**
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     * ?description
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     *
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     *
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     * @param TPtr -
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     * @return TInt -
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     */
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    TInt Play(const TPtr aTones);
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    /**
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     * ?description
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     *
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     *
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     * @param none
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     * @return TInt
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     */
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    TInt Stop();
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    /**
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     * ?description
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     *
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     *
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     * @param none
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     * @return void
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     */
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    void Close();
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    /**
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     * ?description
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     *
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     *
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     * @param CVoIPAudioUplinkStream& -
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     * @return TInt
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     */
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    TInt AddVoIPAudioUplinkStream(CVoIPAudioUplinkStream& aStream,
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            RVoIPAudioSession* aSession);
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    /**
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     * ?description
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     *
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     *
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     * @param CVoIPAudioUplinkStream&
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     * @return TInt
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     */
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    TInt RemoveVoIPAudioUplinkStream(CVoIPAudioUplinkStream& aStream);
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    /**
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     * ?description
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     *
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     *
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     * @param CVoIPAudioDownlinkStream& -
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     * @return TInt
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     */
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    TInt AddVoIPAudioDownlinkStream(CVoIPAudioDownlinkStream& aStream,
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            RVoIPAudioSession* aSession);
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    /**
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     * ?description
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     *
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     *
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     * @param CVoIPAudioDownlinkStream& -
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     * @return TInt
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     */
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    TInt RemoveVoIPAudioDownlinkStream(CVoIPAudioDownlinkStream& aStream);
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    // From MQueueHandlerObserver
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    /**
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     * ?description
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     *
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     *
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     * @param TPtr8
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     * @return void
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     */
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    virtual void FillBuffer(CVoIPDataBuffer* /*aBuffer*/) {}
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    /**
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     * ?description
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     *
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     *
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     * @param TPtr8
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     * @return void
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     */
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    virtual void EmptyBuffer(CVoIPDataBuffer* /*aBuffer*/) {}
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    /**
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     * ?description
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     *
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     *
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     * @param TInt
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     * @param TInt
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     * @return void
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     */
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    virtual void Event(TInt aEventType, TInt aError);
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private:
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    /**
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     * Constructor
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     *
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     *
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     * @param none
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     * @return none
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     */
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    CDTMFTonePlayerImpl();
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    /**
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     * Symbian constructor
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     *
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     *
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     * @param none
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     * @return void
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     */
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    void ConstructL();
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    /**
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     *
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     * @param none
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     * @return void
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     */
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    void StartMsgQueueL();
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    /**
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     *
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     * @param none
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     * @return void
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     */
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    void ReceiveMsgQComHandlerEventsL();
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private:
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    // Communication queue
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    RMsgQueue<TVoIPMsgBuf> iMsgComQueue;
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    CQueueHandler* iMsgQComHandler;
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    MDTMFToneObserver* iObserver;
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    RVoIPAudioSession* iVoIPAudioSession;
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    TStreamType iStreamType;
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    };
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#endif //VOIPDTMFTONEPLAYERIMPL_H
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// End of file