/*

* Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  volume handling

*

*/

#ifndef BTMCVOLUME_H

#define BTMCVOLUME_H

// INCLUDES

#include <e32base.h>

#include <e32property.h> 

#include "btmcactive.h"

class CBtmcPhoneStatus;

/**

*  CBtmcVolume listens network status events (from RMobilePhone).

*/

NONSHARABLE_CLASS(CBtmcVolume) : public CBase, public MBtmcActiveObserver

    {

    public:

        /**

        * Two-phased constructor.

        */

        static CBtmcVolume* NewL(CBtmcPhoneStatus& aParent);

        /**

        * Destructor.

        */

        ~CBtmcVolume();

        void SetSpeakerVolumeL(TInt aHfVol);

        void SetMicrophoneVolumeL(TInt aHfVol);

        TInt GetVolume();

        void ActivateRemoteVolumeControl();

        void DeActivateRemoteVolumeControl();        

    private:  // From MBtmcActiveObserver

        void RequestCompletedL(CBtmcActive& aActive, TInt aErr);

        void CancelRequest(TInt aServiceId);

    private:

        /**

        * C++ default constructor.

        */

        CBtmcVolume(CBtmcPhoneStatus& aParent);

        /**

        * C++ default constructor.

        */

        void ConstructL();

        void DoSetSpeakerVolL( TInt aPrevPhVol );

        /**

        * Converts volume level (0..15 to 0..10).

        * @param aVolume Volume level

        * @return TInt

        */

        TInt HfToPhoneVolScale(TInt aHfVol);

        /**

        * Converts volume level (0..10 to 0..15).

        * @param aVolume Volume level

        * @return TInt

        */

        TInt PhoneToHfVolScale(TInt aPhoneVol);

        TInt GetNewPhoneVol();

        TBool IsActiveRemoteVolumeControl();

    private:

        enum TVolSyncAction

            {

            ESpeakerVolSubscribe,

            ESpeakerVolSet,

            };

    private:

        CBtmcPhoneStatus& iParent;

        CBtmcActive* iActive; // owned

        RProperty iVolLevelProperty; // owned

        RProperty iVolKeyEventProperty; // owned

        // current volume level of speaker

        TInt iPhnSpkrVol; // phone speaker volume

        TInt iAccSpkrVol; // Acc speaker volume in phone side scale

		TInt iMaxSpkrVol; // Maximum volume level of the phone

		TInt iStep;

        TVolSyncAction iAction;

    };

#endif  // BTMCVOLUME_H

// End of File