camerauis/cameraapp/generic/src/cameracontroller/camflashsimulator.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 07 Jan 2010 16:18:56 +0200
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/*
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* Copyright (c) 2007 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:  Simulator for flash recharging
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*
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*/
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// ===========================================================================
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// Includes
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#include <ECam.h>            // TECAMEvent
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#include <ecamadvsettings.h> // ECam event ids
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#include "camlogging.h"
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#include "camcameracontroller.h"
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#include "camflashsimulator.h"
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// ===========================================================================
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// Local constants
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static const TUint KEventInterest = ECamCameraEventClassNone
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                                  | ECamCameraEventClassImage;
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// ===========================================================================
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// Methods
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// ---------------------------------------------------------------------------
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// CCamFlashSimulator::CCamFlashSimulator
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// ---------------------------------------------------------------------------
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//
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CCamFlashSimulator::CCamFlashSimulator( CCamCameraController& aController )
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  : iController   ( aController ),
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    iError        ( KErrNone    ),
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    iFlashRequired( EFalse      ),
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    iFlashReady   ( ETrue       )
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  {
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  }
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// ---------------------------------------------------------------------------
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// CCamFlashSimulator::~CCamFlashSimulator
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// ---------------------------------------------------------------------------
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//    
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CCamFlashSimulator::~CCamFlashSimulator()
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  {
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  iController.DetachObserver( this );
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  if( iRechargeTimer )
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    {
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    iRechargeTimer->Cancel();
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    delete iRechargeTimer;
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    }
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  // DeleteProperty();
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  }
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// ---------------------------------------------------------------------------
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// CCamFlashSimulator::NewL
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// ---------------------------------------------------------------------------
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// 
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CCamFlashSimulator*
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CCamFlashSimulator::NewL( CCamCameraController& aController )
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  {
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  CCamFlashSimulator* self = 
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      new (ELeave) CCamFlashSimulator( aController );
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  CleanupStack::PushL( self );
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  self->ConstructL();
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  CleanupStack::Pop(); // self
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  return self;
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  }
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// ---------------------------------------------------------------------------
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// CCamFlashSimulator::ConstructL
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// ---------------------------------------------------------------------------
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//
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void
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CCamFlashSimulator::ConstructL()
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  {
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  iRechargeTimer = CPeriodic::NewL( EPriorityNormal );
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  iController.AttachObserverL( this, KEventInterest );
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  }
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// ---------------------------------------------------------------------------
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// HandleCameraEventL <<virtual>>
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// ---------------------------------------------------------------------------
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//
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void 
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CCamFlashSimulator::HandleCameraEventL( TInt              aStatus, 
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                                        TCamCameraEventId aEventId, 
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                                        TAny*             aEventData /*=NULL*/ )
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  {
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  switch( aEventId )
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    {
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    case ECamCameraEventImageInit :
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      {
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      StartRecharging();
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      break;
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      }
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    default :
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      {
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      break;
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      }
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    }
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  }
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// ---------------------------------------------------------------------------
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// CCamFlashSimulator::SetFlashRequired
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// ---------------------------------------------------------------------------
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//
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void
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CCamFlashSimulator::SetFlashRequired( TBool aFlashRequired )
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  {
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  iFlashRequired = aFlashRequired;
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  }
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// ---------------------------------------------------------------------------
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// CCamFlashSimulator::SetFlashError
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// ---------------------------------------------------------------------------
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//    
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void
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CCamFlashSimulator::SetFlashError( TBool aFlashError )
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  {
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  iError = aFlashError;
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  }
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// ---------------------------------------------------------------------------
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// CCamFlashSimulator::StartRecharging
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// ---------------------------------------------------------------------------
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//    
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void
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CCamFlashSimulator::StartRecharging( TBool aError )
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  {
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  if( iRechargeTimer )
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    {
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    // Empty the flash, and publish the property value
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    iFlashReady = EFalse;  
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    // The possible error shall be published when the recharging is done
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    iError = aError;
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    // Start recharging timer
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    iRechargeTimer->Cancel();
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    iRechargeTimer->Start( KSimulatedChargingTime,
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                           KMaxTInt32,
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                           TCallBack( RechargeTimerCallback, this ) );    
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    // Send "flash not ready" event to Camera Controller
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    NotifyController();
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    }
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  }
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// ---------------------------------------------------------------------------
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// NotifyController
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// ---------------------------------------------------------------------------
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//
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void 
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CCamFlashSimulator::NotifyController()
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  {
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  PRINT2( _L("Camera => CCamFlashSimulator::NotifyController, flash ready:%d, status:%d"), iFlashReady, iError )
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  const TUid eventId( iFlashReady 
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                    ? KUidECamEventFlashReady 
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                    : KUidECamEventFlashNotReady );   
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  const TECAMEvent event( eventId, iError );
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  iController.HandleEvent( event );
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  PRINT ( _L("Camera <= CCamFlashSimulator::NotifyController") );
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  }
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// ---------------------------------------------------------------------------
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// CCamFlashSimulator::RechargeTimerCallback
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// ---------------------------------------------------------------------------
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//
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TInt
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CCamFlashSimulator::RechargeTimerCallback( TAny* aSelf )
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  {
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  CCamFlashSimulator* self = static_cast<CCamFlashSimulator*>( aSelf );
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  if( self )
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    {
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    self->iRechargeTimer->Cancel();
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    // Set the flash to ready state and publish value
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    self->iFlashReady = ETrue;
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    // Send "flash ready" event to Camera Controller
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    self->NotifyController();
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    }
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  return KErrNone;    
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  }