/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "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:

*

* Description:

*

*/

/**

@file

@internalComponent

*/

#ifndef BUFFERCOPIERSTATEMONITOR_H_

#define BUFFERCOPIERSTATEMONITOR_H_

#include <e32base.h>

#include <e32std.h>

class MBufferCopierIf;

class CBufferCopier;

class COmxILVideoScheduler;

class CBufferCopierStateMonitor : public CActive

    {

public:

    enum TPFState

        {

        ENull =0,

        EExecuting,

        EPause,

        ESubLoadedToIdle,

        ESubIdleToLoaded

        };

public:

    static CBufferCopierStateMonitor* NewL(MBufferCopierIf& aCallback, COmxILVideoScheduler& aComponent);

    ~CBufferCopierStateMonitor();

    TInt SetState(TPFState aState);

    CBufferCopier* BufferCopier(){return iBufferCopier;}

protected:

    void RunL();

    void DoCancel();

    TInt RunError(TInt aError);

private:

    CBufferCopierStateMonitor(MBufferCopierIf& aCallback, COmxILVideoScheduler& aComponent);

    void ConstructL();

    TInt DoSetState();

    TInt DoRequest();

private:

    MBufferCopierIf& iCallback;

    COmxILVideoScheduler& iComponent;

    TInt iMaxBuffers;

    CBufferCopier* iBufferCopier;

    TPFState iState;

    //Members to make the component thread safe.

    TThreadId iConstructionThreadId;

    TRequestStatus* iCallingStatus; // not owned

    TThreadId iCallingThreadId;

    };

#endif /* BUFFERCOPIERSTATEMONITOR_H_ */