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:  This file contains the implementation of asynchronous AO object.

    15 *

    16 */

    17 

    18 

    19 // INCLUDES

    20 #include "AsyncAO.h"

    21 

    22 using namespace multimedia;

    23 

    24 CAsyncAO::CAsyncAO( MAsyncAOObserver& aObserver )

    25 :CActive(CActive::EPriorityStandard),

    26 iObserver(aObserver)

    27     {

    28     CActiveScheduler::Add(this);

    29     }

    30 

    31 CAsyncAO::~CAsyncAO()

    32     {

    33     Cancel();

    34     }

    35 

    36 CAsyncAO* CAsyncAO::NewL( MAsyncAOObserver& aObserver )

    37     {

    38     CAsyncAO* self = new (ELeave) CAsyncAO(aObserver);

    39     CleanupStack::PushL(self);

    40     self->ConstructL();

    41     CleanupStack::Pop(self);

    42     return self;

    43     }

    44 

    45 void CAsyncAO::ConstructL()

    46     {

    47     // No Implementation

    48     }

    49 

    50 TInt CAsyncAO::SetActive()

    51     {

    52     TInt status(KErrInUse);

    53     if (!CActive::IsActive())

    54         {

    55         CActive::SetActive();

    56         status = KErrNone;

    57         }

    58     return status;

    59     }

    60 

    61 void CAsyncAO::RunL()

    62     {

    63     iObserver.Event(iStatus.Int());

    64     }

    65 

    66 void CAsyncAO::DoCancel()

    67     {

    68     if(iStatus.Int() != KErrNone)

    69         {

    70         TRequestStatus* status = &iStatus;

    71         User::RequestComplete(status,KErrCancel);

    72         }

    73     }

    74 

    75 TInt CAsyncAO::Error( TInt /* aError */ )

    76     {

    77     // RunL left. The client callback function left. Incorrect callback

    78     // implementation. So ignore the leave and continue

    79     return KErrNone;

    80     }

    81 

    82 //  End of File