/*

* Copyright (c) 2005-2006 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:   This class implements volume control of AVRCP Controller.	

*

*

*/

#ifndef BTRCCABSOLUTEVOLUMELEVELCONTROLLER_H

#define BTRCCABSOLUTEVOLUMELEVELCONTROLLER_H

//  INCLUDES

#include <e32base.h>

#include <bttypes.h> // BT protocol wide types

#include "btrccVolumeLevelControllerBase.h"

#include "absolutevolumeapicontrollerobserver.h"  

#include "absolutevolumeapicontroller.h"

#include "absolutevolumeapitargetobserver.h"

//#include <remconinterfaceselector.h> 

// FORWARD DECLARATIONS

class CRemConInterfaceSelector; 

class CRemConCoreApiController; 

class CBTRCCActive; 

// CLASS DECLARATION

/**

*  A listener for incoming handsfree attachments/detachments.

*/

NONSHARABLE_CLASS(CBTRCCAbsoluteVolumeLevelController) : 

    public CBTRCCVolumeLevelControllerBase, 

    public MRemConAbsoluteVolumeControllerObserver 

	{

	public:  // Constructors and destructor

		/**

		* Two-phased constructor.

		*      

		*/

		static CBTRCCAbsoluteVolumeLevelController* NewL(CRemConInterfaceSelector& aInterfaceSelector, MBTRCCVolumeControllerObserver& aObserver); 

		/**

		* Destructor.

		*/

		virtual ~CBTRCCAbsoluteVolumeLevelController();

	private:

    		/**

    		* C++ default constructor.

    		*/

            CBTRCCAbsoluteVolumeLevelController(MBTRCCVolumeControllerObserver& aObserver);

    		/**

    		* Symbian 2nd phase constructor.

    		*/

    		void ConstructL(CRemConInterfaceSelector& aInterfaceSelector);

    public: // From MBTRCCActiveObserver

        void RequestCompletedL(CBTRCCActive& aActive, TInt aErr);

        void CancelRequest(TInt aServiceId);

    public: // From CBTRCCVolumeLevelControllerBase

        void DoStart(TInt aInitialVolume); // Set the initial volume. 

        void DoStop(); // Stop monitoring for volume level changes. 

        void DoReset(); // Reset the volume level.          

    private: // From CBTRCCVolumeLevelControllerBase

        void AdjustRemoteVolume(TInt aVolume); 

        TInt RoundRemoteVolume(TInt aPrevPhVol);        

	public: // New methods

    private:  // From MRemConAbsoluteVolumeControllerObserver

        void MrcavcoCurrentVolume(TUint32 aVolume, TUint32 aMaxVolume, TInt aError); 

        void MrcavcoSetAbsoluteVolumeResponse(TUint32 aVolume, TUint32 aMaxVolume, TInt aError); 

        void MrcavcoAbsoluteVolumeNotificationError(); 

    private:

        void AccessoryChangedVolume(TUint32 aVolume, TUint32 aMaxVolume, TInt aError);

        TBool ValidVolumeParams(TUint32 aVolume, TUint32 aMaxVolume);

        void RegisterVolumeChangeNotification();

	private:    // Data

	    CRemConAbsoluteVolumeController* iRemConAbsoluteVolumeController; // changes the accessory's volume level. 

        // This active object listens to the absolute volume API. 

        CBTRCCActive *iBtrccAbsoluteVolumeActive; 

        // Not owned

        CRemConInterfaceSelector *iInterfaceSelector;

		TInt iLocalMaxVolume; // maximum volume level of phone

		TUint iNumRemotes; // not used, but needed for the remote controlling API.

		TInt iRetryCounter;

        TInt iStep;

    };

#endif      // BTRCCABSOLUTEVOLUMELEVELCONTROLLER_H

// End of File