vtprotocolplugins/VideoSource/inc/cactivewait.inl
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Wed, 14 Apr 2010 16:00:08 +0300
branchRCL_3
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/*
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* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  Video Source subsystem.
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*
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*/
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// MACROS
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#ifdef _DEBUG
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#    define __IF_DEBUG(t) {RDebug::t;}
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#else
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#    define __IF_DEBUG(t)
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#endif
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// ============================ CVSActiveWait ===============================
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// -----------------------------------------------------------------------------
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// CVSActiveWait::~CVSActiveWait()
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// -----------------------------------------------------------------------------
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//
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template <class R>
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CVSActiveWait< R >::~CVSActiveWait()
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    {
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    __IF_DEBUG(Print(_L("VideoSource [%d]: CVSActiveWait::~CVSActiveWait() >>"), RThread().Id().operator TUint()));
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    Cancel();
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    __IF_DEBUG(Print(_L("VideoSource [%d]: CVSActiveWait::~CVSActiveWait() <<"), RThread().Id().operator TUint()));
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    }
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// -----------------------------------------------------------------------------
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// CVSActiveWait::RequestStatus()
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// -----------------------------------------------------------------------------
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//
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template <class R>
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TRequestStatus* CVSActiveWait< R >::RequestStatus()
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    {
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    __IF_DEBUG(Print(_L("VideoSource [%d]: CVSActiveWait::RequestStatus() >>"), RThread().Id().operator TUint()));
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    __IF_DEBUG(Print(_L("VideoSource [%d]: CVSActiveWait::RequestStatus() <<"), RThread().Id().operator TUint()));
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    return &iStatus;
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    }
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// -----------------------------------------------------------------------------
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// CVSActiveWait::Signal( TInt aError )
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// -----------------------------------------------------------------------------
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//
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template <class R>
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void CVSActiveWait< R >::Signal( TInt aError )
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    {
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    __IF_DEBUG(Print(_L("VideoSource [%d]: CVSActiveWait::Signal() >>"), RThread().Id().operator TUint()));
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    if( IsActive() )
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        {
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        TRequestStatus* status = &iStatus;
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        User::RequestComplete( status, aError );
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        }
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    __IF_DEBUG(Print(_L("VideoSource [%d]: CVSActiveWait::Signal() <<"), RThread().Id().operator TUint()));
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    }
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// -----------------------------------------------------------------------------
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// CVSActiveWait::RunL()
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// -----------------------------------------------------------------------------
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//
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template <class R>
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void CVSActiveWait< R >::RunL()
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    {
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    __IF_DEBUG(Print(_L("VideoSource [%d]: CVSActiveWait::RunL() >>"), RThread().Id().operator TUint()));
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    (iRequester->*iCallback)( iStatus.Int() );
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    __IF_DEBUG(Print(_L("VideoSource [%d]: CVSActiveWait::RunL() <<"), RThread().Id().operator TUint()));
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    }
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// -----------------------------------------------------------------------------
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// CVSActiveWait::DoCancel()
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// -----------------------------------------------------------------------------
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//
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template <class R>
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void CVSActiveWait< R >::DoCancel()
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    {
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    __IF_DEBUG(Print(_L("VideoSource [%d]: CVSActiveWait::DoCancel() >>"), RThread().Id().operator TUint()));
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    if ( iStatus == KRequestPending )
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    	{
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    	TRequestStatus* pStatus = &iStatus;
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    	User::RequestComplete( pStatus, KErrCancel );
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    	}
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    __IF_DEBUG(Print(_L("VideoSource [%d]: CVSActiveWait::DoCancel() <<"), RThread().Id().operator TUint()));
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    }
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// -----------------------------------------------------------------------------
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// CVSActiveWait::CVSActiveWait( CAnimatedImageViewer* aRequester )
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// -----------------------------------------------------------------------------
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//
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template < class R >
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CVSActiveWait< R >::CVSActiveWait( R* aRequester )
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: CActive( EPriorityHigh ), iRequester( aRequester )
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    {
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    __IF_DEBUG(Print(_L("CVSActiveWait::CVSActiveWait() >>")));
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    CActiveScheduler::Add( this );
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    __IF_DEBUG(Print(_L("CVSActiveWait::CVSActiveWait() <<")));
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    }
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// -----------------------------------------------------------------------------
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// CVSActiveWait::InitializeWaiter( TVSActiveWaitCallback aCallback )
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// -----------------------------------------------------------------------------
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//
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template < class R >
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void CVSActiveWait< R >::InitializeWaiter( TVSActiveWaitCallback aCallback )
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    {
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     __IF_DEBUG(Print(_L("VideoSource [%d]: CVSActiveWait::InitializeWaiter() >>"), RThread().Id().operator TUint()));
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    if ( !IsActive() )
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    	{
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    	iStatus = KRequestPending;
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    	iCallback = aCallback;
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    	__IF_DEBUG(Print(_L("VideoSource [%d]: CVSActiveWait::InitializeWaiter() SetActive"), RThread().Id().operator TUint()));
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    	SetActive();
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  		}
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      __IF_DEBUG(Print(_L("VideoSource [%d]: CVSActiveWait::InitializeWaiter() <<"), RThread().Id().operator TUint()));
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    }
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