/*

* Copyright (c) 2010 Ixonos Plc.

* All rights reserved.

* This component and the accompanying materials are made available

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

* which accompanies this distribution, and is available

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

*

* Initial Contributors:

* Nokia Corporation - Initial contribution

*

* Contributors:

* Ixonos Plc

*

* Description:  

* Definition for CDataProcessor, the data processing object abstract

* base class.

*

*/

#ifndef     __DATAPROCESSOR_H__

#define     __DATAPROCESSOR_H__

//  INCLUDES

#ifndef __E32BASE_H__

#include <e32base.h>

#endif

//  FORWARD DECLARATIONS

//class MVideoPlayerObserver;

//  CLASS DEFINITIONS

class CDataProcessor : public CActive

{

public: // constants

    enum TErrorCode

    {

        EInternalAssertionFailure = -1100

    };

public: // new functions

    // Constructors

    CDataProcessor(TInt aPriority=EPriorityStandard);

    void ConstructL();

    // Destructor

    virtual ~CDataProcessor();

    // Called by CActiveQueue when input data is available

    virtual void InputDataAvailable(TAny *aUserPointer);

    // Called by CActiveQueue when output space is available

    virtual void OutputSpaceAvailable(TAny *aUserPointer);

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

    // stream end has been signaled

    virtual void StreamEndReached(TAny *aUserPointer);

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

    virtual void RunL() = 0;

    // Cancels the internal request

    virtual void DoCancel();

};

#endif      //  __DATAPROCESSOR_H__

// End of File