1 /*

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

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

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

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  Manipulates the priority of a Player.

    15 *

    16 */

    17 

    18 

    19 #ifndef CAMMSPRIORITYCONTROL_H

    20 #define CAMMSPRIORITYCONTROL_H

    21 

    22 //  INCLUDES

    23 #include "cammscontrol.h"

    24 #include <mmmaplayerstatelistener.h>

    25 

    26 // CONSTANTS

    27 _LIT(KAMMSPriorityControl, "PriorityControl");

    28 

    29 // CLASS DECLARATION

    30 

    31 /**

    32 *

    33 *  Controls for the priority.

    34 *  This class delegates priority setting calls to RMMFController.

    35 *

    36 *

    37 *  @since 3.0

    38 */

    39 NONSHARABLE_CLASS(CAMMSPriorityControl)

    40         : public CAMMSControl, public MMMAPlayerStateListener

    41 {

    42 public:  // Constructors and destructor

    43 

    44     /**

    45     * Two-phased constructor.

    46     * @param aPlayer Player that has this control.

    47     */

    48     static CAMMSPriorityControl* NewLC(CMMAPlayer* aPlayer);

    49 

    50     /**

    51     * Destructor.

    52     */

    53     ~CAMMSPriorityControl();

    54 

    55 public: // New functions

    56 

    57     /**

    58     * Sets the priority.

    59     *

    60     * @param aPriority The new priority to be set.

    61     */

    62     void SetPriorityL(TInt aPriority);

    63 

    64     /**

    65     * Gets the priority.

    66     *

    67     * @return The set priority.

    68     */

    69     TInt Priority();

    70 

    71 public:  // From MMMAPlayerStateListener

    72 

    73     void StateChanged(TInt aState);

    74 

    75 public: // Functions from base classes

    76 

    77     const TDesC& ClassName() const;

    78 

    79 protected:  // New functions

    80 

    81     /**

    82      * Scales the given AMMS priority to MMF priority

    83      * and sets it to MMF if the priority has changed.

    84      * @param aAmmsPriority AMMS priority to be set.

    85      */

    86     void SetPriorityToMmfL(TInt aAmmsPriority);

    87 

    88 private:

    89     /**

    90     * C++ constructor.

    91     * @param aPlayer Player that has this control.

    92     */

    93     CAMMSPriorityControl(CMMAPlayer* aPlayer);

    94 

    95     /**

    96      * Symbian 2nd phase constructor.

    97      */

    98     void ConstructL();

    99 

   100 private:  // data

   101 

   102     // Priority cannot be set if player is REALIZED. The priority is set

   103     // when the player is prefetched.

   104 

   105     TInt iVisiblePriority;  // Priority visible in AMMS.

   106 

   107     TInt iActualPriority;   // Priority set in MMF.

   108 

   109 };

   110 

   111 #endif // CAMMSPRIORITYCONTROL_H

   112 

   113