1 /*

     2 * Copyright (c) 2010 Ixonos Plc.

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the "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 * Ixonos Plc

    14 *

    15 * Description:  

    16 * Definition for CDataProcessor, the data processing object abstract

    17 * base class.

    18 *

    19 */

    20 

    21 

    22 

    23 #ifndef     __DATAPROCESSOR_H__

    24 #define     __DATAPROCESSOR_H__

    25 

    26 

    27 //  INCLUDES

    28 

    29 #ifndef __E32BASE_H__

    30 #include <e32base.h>

    31 #endif

    32 

    33 

    34 //  FORWARD DECLARATIONS

    35 

    36 //class MVideoPlayerObserver;

    37 

    38 

    39 //  CLASS DEFINITIONS

    40 

    41 class CDataProcessor : public CActive

    42 {

    43 public: // constants

    44     enum TErrorCode

    45     {

    46         EInternalAssertionFailure = -1100

    47     };

    48 

    49 public: // new functions

    50     // Constructors

    51     CDataProcessor(TInt aPriority=EPriorityStandard);

    52     void ConstructL();

    53 

    54     // Destructor

    55     virtual ~CDataProcessor();

    56 

    57     // Called by CActiveQueue when input data is available

    58     virtual void InputDataAvailable(TAny *aUserPointer);

    59 

    60     // Called by CActiveQueue when output space is available

    61     virtual void OutputSpaceAvailable(TAny *aUserPointer);

    62 

    63     // Called by CActiveQeueue after all data has been read from a queue where

    64     // stream end has been signaled

    65     virtual void StreamEndReached(TAny *aUserPointer);

    66 

    67     // Standard active object RunL() method, overridden by derived class

    68     virtual void RunL() = 0;

    69 

    70     // Cancels the internal request

    71     virtual void DoCancel();

    72 };

    73 

    74 

    75 

    76 #endif      //  __DATAPROCESSOR_H__

    77             

    78 // End of File