author | Stefan Karlsson <stefan.karlsson@nokia.com> |
Sat, 10 Apr 2010 13:39:47 +0100 | |
branch | CompilerCompatibility |
changeset 17 | 54edd0996877 |
parent 0 | 1ddebce53859 |
permissions | -rw-r--r-- |
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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: CCamCameraControllerActive class declaration. |
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* This class presents an active object used to call back |
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* CCamCameraController methods. This is done to keep clients |
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* not blocked when issuing a request or sequence of requests. |
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* |
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* |
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*/ |
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#ifndef CAM_CAMERACONTROLLERACTIVE_H |
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#define CAM_CAMERACONTROLLERACTIVE_H |
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// =========================================================================== |
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// Included headers |
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#include <e32base.h> |
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// =========================================================================== |
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// Forward declarations |
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class CCamCameraController; |
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// =========================================================================== |
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// Classes |
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/** |
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* Camera controller active object. |
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* |
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* Used to assist on asynchronising CCamCameraController requests. |
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* |
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*/ |
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class CCamCameraControllerActive : public CActive |
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{ |
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// ========================================================================= |
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// Methods |
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// ------------------------------------------------------------------------- |
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// Constructor(s) and destructor |
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public: |
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/** |
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* Static 2 phase constructor. |
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* @param aController Camera controller, which callbacks will be called. |
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* @param aPriority This active object's priority. |
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*/ |
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static CCamCameraControllerActive* NewL( CCamCameraController& aController, TInt aPriority ); |
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/** |
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* Destructor. |
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*/ |
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virtual ~CCamCameraControllerActive(); |
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private: |
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/** |
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* Standard Symbian 2nd phase constructor. |
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*/ |
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void ConstructL(); |
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/** |
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* Standard C++ constructor. |
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*/ |
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CCamCameraControllerActive( CCamCameraController& aController, |
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TInt aPriority ); |
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// ------------------------------------------------------------------------- |
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// from CActive |
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protected: |
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/** |
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* Reacts to CActive::Cancel, if this AO was active. |
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* @see See CActive for more info. |
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*/ |
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virtual void DoCancel(); |
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/** |
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* Calls CCamCameraController::ProcessNextRequestL. If leave occurs there, |
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* RunError will be called by CActiveScheduler. Checks the return value of |
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* CCamCameraController::ProcessNextRequestL and if it is not zero, sets this |
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* AO ready for new iteration. |
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* @see See CActive for more info. |
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*/ |
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virtual void RunL(); |
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/** |
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* Called if a leave occurs in RunL. |
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* @param aError Leave code from RunL. |
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* @return Always KErrNone. |
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* @see See CActive for more info. |
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*/ |
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virtual TInt RunError( TInt aError ); |
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// ------------------------------------------------------------------------- |
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// New methods. |
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public: |
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/** |
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* Sets this Active Object to ActiveScheduler's queue. |
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* RunL calls back CCamCameraController::ProcessNextRequestL. |
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* If the return value is not zero, this AO will be scheduled to run again. |
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* Otherwise new call to IssueRequest is needed. |
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* If leave occurs in RunL, RunError calls CCameraController::EndSequence. |
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*/ |
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void IssueRequest(); |
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private: |
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/** |
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* Stop the sequence handling on error. |
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* Calls CCameraController::EndSequence. |
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*/ |
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void HandleError( TInt aStatus ); |
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// ========================================================================= |
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// Data |
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private: |
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/** |
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* Camera controller, which callbacks will be called. |
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*/ |
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CCamCameraController& iController; |
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// ========================================================================= |
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}; |
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#endif // CAM_CAMERACONTROLLERACTIVE_H |
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// end of file |