1 /*

     2 * Copyright (c) 2009 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:

    15 *

    16 */

    17 

    18 

    19 /**

    20 @file

    21 @internalComponent

    22 */

    23 #ifndef BUFFERCOPIERSTATEMONITOR_H_

    24 #define BUFFERCOPIERSTATEMONITOR_H_

    25 

    26 #include <e32base.h>

    27 #include <e32std.h>

    28 

    29 class MBufferCopierIf;

    30 class CBufferCopier;

    31 class COmxILVideoScheduler;

    32 

    33 

    34 class CBufferCopierStateMonitor : public CActive

    35     {

    36 public:

    37     enum TPFState

    38         {

    39         ENull =0,

    40         EExecuting,

    41         EPause,

    42         ESubLoadedToIdle,

    43         ESubIdleToLoaded

    44         };

    45 public:

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

    47     ~CBufferCopierStateMonitor();

    48     TInt SetState(TPFState aState);

    49     CBufferCopier* BufferCopier(){return iBufferCopier;}

    50     

    51 protected:

    52     void RunL();

    53     void DoCancel();

    54     TInt RunError(TInt aError);

    55     

    56 private:

    57     CBufferCopierStateMonitor(MBufferCopierIf& aCallback, COmxILVideoScheduler& aComponent);

    58     void ConstructL();

    59     TInt DoSetState();

    60     TInt DoRequest();

    61     

    62 private:

    63     MBufferCopierIf& iCallback;

    64     COmxILVideoScheduler& iComponent;

    65     TInt iMaxBuffers;

    66     CBufferCopier* iBufferCopier;

    67     TPFState iState;

    68     //Members to make the component thread safe.

    69     TThreadId iConstructionThreadId;

    70     TRequestStatus* iCallingStatus; // not owned

    71     TThreadId iCallingThreadId;

    72     };

    73 

    74 

    75 #endif /* BUFFERCOPIERSTATEMONITOR_H_ */