1 /*

     2 * Copyright (c) 2008 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 the License "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:    Contains cached MDS media items which are being downloaded.*

    15 */

    16 

    17 

    18 

    19 

    20 #ifndef VCXMYVIDEOSDOWNLOADCACHE_H

    21 #define VCXMYVIDEOSDOWNLOADCACHE_H

    22 

    23 // INCLUDES

    24 

    25 // FORWARD DECLARATIONS

    26 class CMPXMedia;

    27 

    28 // CONSTANTS

    29 

    30 // CLASS DECLARATION

    31 

    32 /**

    33 * Used for storing download ids and media object pointers to circular buffers for fast access.

    34 *

    35 * @lib mpxmyvideoscollectionplugin.lib

    36 */

    37 NONSHARABLE_CLASS(CVcxMyVideosDownloadCache) : public CBase

    38     {    

    39     public: // Constructors and destructor

    40 

    41         /**

    42         * Two-phased constructor

    43         * @return   Object constructed

    44         */

    45         static CVcxMyVideosDownloadCache* NewL();

    46 

    47         /**

    48         * Destructor

    49         */

    50         virtual ~CVcxMyVideosDownloadCache();

    51  

    52     private:

    53         /**

    54         * Constructor

    55         */

    56         CVcxMyVideosDownloadCache();

    57 

    58         /**

    59         * Symbian 2nd phase constructor.

    60         */

    61         void ConstructL ();

    62 

    63     public:                        

    64         /**

    65         * Tries to find item with aDownloadId from Download Cache.

    66         *

    67         * @param aDownloadId   Download ID in Download Manager.

    68         * @return              Returns pointer to media object, NULL if not found.

    69         *                      Ownership does not move.

    70         */

    71         CMPXMedia* Get( TUint32 aDownloadId );

    72 

    73         /**

    74         * Adds download ID and index pair to Download Cache.

    75         *

    76         * @param aDownloadId  Download ID in Download Manager

    77         * @param aVideo       Pointer to video, ownership does not move.

    78         */

    79         void Add( TUint32 aDownloadId, CMPXMedia* aVideo );

    80         

    81         /**

    82         * Deletes item from Download Cache

    83         *

    84         * @param aVideo  Video to remove.

    85         */

    86         void Delete( CMPXMedia* aVideo );

    87                                           

    88     private:

    89    

    90         /**

    91         * Array used as circular buffer, contains download ids.

    92         */

    93         RArray<TUint32> iDownloadId;

    94         

    95         /**

    96         * Array used as circular buffer, contains pointers to medias.

    97         */

    98         RPointerArray<CMPXMedia> iMedia;

    99         

   100         /**

   101         * Current position of the circular buffers (iDownloadId and iMedia).

   102         * Next item added is written to this position.

   103         */

   104         TInt iPos;

   105 

   106     };

   107 

   108 #endif   // VCXMYVIDEOSVIDEOCACHE_H

   109 

   110