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 "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:  Video Source subsystem.

    15 *

    16 */

    17 

    18 #ifndef C_MULTIFRAMEDATAAO_H

    19 #define C_MULTIFRAMEDATAAO_H

    20 

    21 // INCLUDE FILES

    22 #include <e32base.h>

    23 #include "mmultiframeprovider.h"

    24 // FORWARD DECLARATIONS

    25 class CMultiframeProvider;

    26 

    27 // MACROS

    28 	

    29 /**

    30 *  @lib videosource.lib

    31 */

    32 // ============================ CMultiframeDataAO ===============================

    33 NONSHARABLE_CLASS( CMultiframeDataAO ) : public CTimer

    34     {

    35     public: // Constructors and destructor

    36 

    37         /**

    38         * Constructor.

    39         * @param "aRequester" instance to requester

    40         */

    41         CMultiframeDataAO( CMultiframeProvider* aRequester );

    42 

    43         /**

    44         * Destructor.

    45         */

    46         ~CMultiframeDataAO();

    47 

    48     public: // New functions

    49 				

    50 				/**

    51         * Sets observer.

    52         * @param "aObserever" instance to observer

    53         */

    54 				void SetObserver( MMultiframeprovider* aObserver );

    55 					

    56         /**

    57         * Activates CTimer

    58         * @param "aUpdateTime" expiration time

    59         */

    60         void Activate( TTimeIntervalMicroSeconds aUpdateTime, TBool aInit, TBool aVFUpdate );

    61         

    62        	/**

    63         * Updates local buffer.

    64         * @param "aLocalBuffer" local buffer

    65         */

    66         void LocalBuffer( CVtImageBitmap* aLocalBuffer );

    67         

    68         /**

    69         * Updates remote buffer.

    70         * @param "aRemoteBuffer" remote buffer

    71         */

    72         void RemoteBuffer ( CVtImageBitmap* aRemoteBuffer );

    73         

    74         /**

    75         * Cancels looping and completes request in correct thread.

    76         */        

    77         void CancelTimeLoop();

    78 

    79     private:    // Functions from base classes

    80 

    81         /**

    82         * From CActive. See CActive for description.

    83         */

    84         void RunL();

    85 

    86     private:    // Data

    87 

    88         // Pointer to observer.

    89         MMultiframeprovider* iObserver; // not owned

    90         

    91         // Pointer to requester

    92         CMultiframeProvider* iRequester;

    93         

    94         // For updating ViewFinder buffer

    95         TImageShareDataBuffer iLocalBuffer;

    96         // For updating remote buffer

    97         TImageShareDataBuffer iRemoteBuffer;

    98         

    99         // For updating remote buffer if activated when active

   100         TImageShareDataBuffer iRemoteSecondBuffer;

   101         

   102         // For updating ViewFinder buffer if activated when active

   103         TImageShareDataBuffer iLocalSecondBuffer;

   104         

   105         // Initialization flag

   106         TBool iInit;

   107         

   108         // Delta calc ref point

   109        	TTimeIntervalMicroSeconds iTime;

   110         

   111         // VF update flag

   112         TBool iVFUpdate;

   113         

   114         // Id of thread whose active scheduler this instance is added into.

   115         TThreadId iThreadId;

   116         

   117         // A flag to indecate loop ao must be stopped

   118         TBool iRequireStopping;

   119     };

   120 

   121 #endif //C_MULTIFRAMEDATAAO_H

   122 

   123 //  End of File

   124 

   125 

   126 

   127 

   128