/*

* Copyright (c) 2008 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 observes the accessory framework.

 *

*/

#ifndef MPXVIDEOACCESSORYOBSERVER_H

#define MPXVIDEOACCESSORYOBSERVER_H

//

//  INCLUDES

//

#include <e32std.h>

#include <e32base.h>

#include <AccessoryServer.h>

#include <AccessoryConnection.h>

#include "mpxvideo_debug.h"

//

//  FORWARD DECLARATIONS

//

class CMPXVideoPlaybackController;

//

//  CLASS DECLARATION

//

NONSHARABLE_CLASS( CMPXVideoAccessoryObserver ) : public CActive

{

    public:

        /*

         *  Two phase constructor

         *  @param aObs  Reference to an event observer

         */

        static CMPXVideoAccessoryObserver* NewL( CMPXVideoPlaybackController* aController );

        /*

         *  Destructor

         */

        virtual ~CMPXVideoAccessoryObserver();

    public:

        /*

         *  Returns the status of the TV-Out cable connection

         *  @return the cable connection status

         *     ETrue    cable is connected.

         *     EFalse   cable is not connected.

         */

        TBool IsTvOutConnected();

    private:

        /*

         *  From CActive

         *

         *  DoCancel() must not wait for event completion;

         *  this is handled by Cancel().

         */

        void DoCancel();

        /*

         *  From CActive

         *

         *  Handles an active object's request completion event.

         */

        void RunL();

        /*

         *  From CActive

         *

         *  If RunL leaves, then the active scheduler calls RunError()

         *  to handle the leave.

         */

        TInt RunError( TInt aError );

    private:

        /*

         *  C++ default constructor.

         *  @param aObs  Reference to an event observer

         */

        CMPXVideoAccessoryObserver( CMPXVideoPlaybackController* aController );

        /*

         *  By default Symbian 2nd phase constructor is private.

         *  Create and connect to the driver and Central Repository.

         */

        void ConstructL();

        /*

         *  Checks if the TV-Out status has changed by parsing

         *  the Generic ID Array searching for changes with accessories

         *  that support TV-Out

         *  @return   Status Changed

         *      ETrue   TV-Out Status has changed

         *      EFalse  TV-Out Status has not changed

         */

        TBool UpdateTvOutStatusL();

        /*

         *  Starts listening for Accessory events.

         *  @param None

         *  @return None

         */

        void StartMonitoringL();

    private:

        CMPXVideoPlaybackController*        iController;

        TBool                               iTvOutConnected;

#ifdef __ACCESSORY_FW

        RAccessoryServer                    iServer;

        RAccessoryConnection                iConnection;

        TAccPolGenericIDArray               iGenericIdArray;

#endif //__ACCESSORY_FW

};

#endif  //  MPXVIDEOACCESSORYOBSERVER_H

// End of File