1 /*

     2 * Copyright (c) 2006 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 

    19 #ifndef CVSCONTROLLERIMP_H

    20 #define CVSCONTROLLERIMP_H

    21 

    22 // INCLUDE FILES

    23 #include "CApiVideoSource.h"

    24 

    25 // CLASS DECLARATIONS

    26 

    27 /**

    28 *  Internal implementation of controller. This class is inherited from

    29 *  public controller interface.

    30 *

    31 *  @lib videosource.lib

    32 */

    33 class CVSControllerImp : public CVSController

    34     {

    35     public: // Constructors and destructor

    36 

    37         /**

    38         * Static factory function to create controller instance.

    39         * @exception Can leave with one of the system wide error codes.

    40         * @return Pointer to new controller instance.

    41         */

    42         static CVSControllerImp* NewL();

    43 

    44         /**

    45         * Destructor.

    46         */

    47         ~CVSControllerImp();

    48 

    49     public: // New functions

    50 

    51     public: // Functions from base classes

    52 

    53         /**

    54         * Create data source instance.

    55         * @param "aObserver" Pointer to data source observer.

    56         * @exception Can leave with one of the system wide error codes.

    57         * @return Pointer to new data source instance.

    58         */

    59         virtual CVSDataSource* CreateDataSourceL( 

    60             MVSDataSourceObserver* aObserver );

    61 

    62         /**

    63         * Return provider count and provider index.

    64         * @return Number of providers available. Count also acts as zero 

    65         * based provider index.

    66         */

    67         virtual TInt ProvidersAvailable();

    68 

    69         /**

    70         * Return provider information.

    71         * @param "aProviderIndex" Index of the provider to return information 

    72         * for.

    73         * @param "aInfo" Reference to the variable where the provider 

    74         * information is copied.

    75         * @exception Can leave with one of the system wide error codes.

    76         */

    77         virtual void ProviderInfoL( 

    78             TInt aProviderIndex, 

    79             TVSDataProviderInfo& aInfo );

    80 

    81         /**

    82         * Create provider instance.

    83         * @param "aProviderIndex" Index of the provider to be created.

    84         * @param "aObserver" Pointer to provider observer.

    85         * @exception Can leave with one of the system wide error codes.

    86         * @return Pointer to new provider instance.

    87         */

    88         virtual CVSDataProvider* CreateDataProviderL( 

    89             TInt aProviderIndex, 

    90             MVSDataProviderObserver* aObserver, 

    91             MVSBufferPool* aPool );

    92 

    93     protected:  // New functions

    94 

    95     protected:  // Functions from base classes

    96 

    97     private:    // Constructors and destructor

    98 

    99         /**

   100         * 2nd phase constructor.

   101         * @param "aObserver" Pointer to controller observer

   102         * @exception Can leave with one of the system wide error codes.

   103         */

   104         void ConstructL( MVSControllerObserver* aObserver );

   105 

   106     private:    // New functions

   107 

   108     private:    // Functions from base classes

   109 

   110     public: // Data

   111 

   112     protected:  // Data

   113 

   114     private:    // Data

   115 

   116     };

   117 

   118 #endif      // CVSCONTROLLERIMP_H  

   119             

   120 // End of File