/*

* 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 implements starting Music play	

*

*

*/

#ifndef BTRCCPLAYERSTATER_H

#define BTRCCPLAYERSTATER_H

//  INCLUDES

#include <e32base.h>

#include <remconcoreapitargetobserver.h>

// FORWARD DECLARATIONS

class CRemConCoreApiTarget;

/**

*  This class listens to AVRCP PLAY command by headset,if music player is not running 

*  when such a command is received, it will be launched and requested to start playing.

* */

NONSHARABLE_CLASS(CPlayerStarter) : 

    public CActive, public MRemConCoreApiTargetObserver

	{

public:

	/**

	* Two-phased constructor.

	*      

	*/

	static CPlayerStarter* NewL();

	/**

	 * Set the reference for AVRCP Core API command receiving and

	 * responses to those command.

	 */

	void SetCoreTarget(CRemConCoreApiTarget& aTarget);

	/**

	* Destructor.

	*/

	~CPlayerStarter();

private:  // From CActive

    /**

    * Informs the observer that an accessory has created a control 

    * connection to our device.

    * @param                            None.

    * @return                           None.

    */

    void RunL();

    /**

    * Handles a possible leave from RunL().

    * @param aError                     The leave code from RunL().

    * @return                           KErrNone.

    */

    TInt RunError(TInt aError);

    /**

    * Cancels the volume change operation.

    * @param                            None.

    * @return                           None.

    */

    void DoCancel();

    // from base class MRemConCoreApiTargetObserver

    /**

     * From MRemConCoreApiTargetObserver

     * A 'play' command has been received.

     *

     * @param aSpeed The playback speed.

     * @param aButtonAct The button action associated with the command.

     */

    void MrccatoPlay(

        TRemConCoreApiPlaybackSpeed aSpeed,

        TRemConCoreApiButtonAction aButtonAct );

    /**

     * From MRemConCoreApiTargetObserver

     * A command has been received.

     *

     * @param aOperationId The operation ID of the command.

     * @param aButtonAct The button action associated with the command.

     */

    void MrccatoCommand(

        TRemConCoreApiOperationId aOperationId,

        TRemConCoreApiButtonAction aButtonAct );

private:

        /**

        * C++ default constructor.

        */

        CPlayerStarter();

        /**

        * Symbian 2nd phase constructor.

        */

        void ConstructL();

        /**

         * Start music player if it is not running yet.

         */

        void StartPlayIfNeeded();

        /**

         * Tells if MPX music player is running or not.

         */

        TBool IsMusicPlayerRunning();

        /**

         * Launch MPX player.

         */

        void LaunchMusicPlayerL();

private:

    enum TOpState

        {

        EIdle = 0, 

        ERespondPlayOk , // responding OK to play command is outstanding

        ERespondPlayNok,   // responding NOT OK to play command is outstanding

        EPlayMusicTiming,  // scheduling internal PLAY command to player

        };

private:    // Data

    CRemConCoreApiTarget* iCoreTarget; // not own

	RTimer iTimer;

	TOpState iState;

    };

#endif      // BTRCCACLLINKLISTENER_H

// End of File