camerauis/cameraxui/cxengine/inc/cxeautofocuscontrolsymbian.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 16 Apr 2010 14:51:30 +0300
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/*
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* Copyright (c) 2009 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:
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*
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*/
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#ifndef CXEAUTOFOCUSCONTROLSYMBIAN_H
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#define CXEAUTOFOCUSCONTROLSYMBIAN_H
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#include <QVariant>
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#include <ecam.h> // CCamera
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#include <ecam/ecamadvsettingsintf.h> // CCamera
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#include "cxenamespace.h"
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#include "cxeautofocuscontrol.h"
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#include "cxestatemachine.h"
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//forward declarations
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class CxeCameraDevice;
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/**
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 * CxeAutoFocusControl is responsible for handling Autofocus events from the camera adaptation.
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 * It also routes the Autofocus successful and failed events to the clients interested in Žknowing the
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 * status of Autofocus.
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 */
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class CxeAutoFocusControlSymbian : public CxeAutoFocusControl,
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                                   public CxeStateMachine
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    {
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    Q_OBJECT
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public:
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    CxeAutoFocusControlSymbian( CxeCameraDevice &cameraDevice );
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    virtual ~CxeAutoFocusControlSymbian();
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    CxeError::Id  start();
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    void cancel();
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    void setMode( CxeAutoFocusControl::Mode newMode );
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    CxeAutoFocusControl::Mode mode() const;
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    CxeAutoFocusControl::State state() const;
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    bool supported() const;
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protected: // from CxeStateMachine
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    void handleStateChanged( int newStateId, CxeError::Id error );
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protected:
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    void initializeStates();
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    // intializes all the resources we need for AF functionality
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    void initializeResources();
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    void setFocusRange(CCamera::CCameraAdvancedSettings::TFocusRange range);
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    CCamera::CCameraAdvancedSettings::TFocusRange  focusRange() const;
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    void setFocusType(CCamera::CCameraAdvancedSettings::TAutoFocusType type);
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    int supportedFocusTypes() const;
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    CCamera::CCameraAdvancedSettings::TAutoFocusType focusType() const;
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protected slots:
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    // notifications when camera reference is changed
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    void prepareForCameraDelete();
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    void handleCameraAllocated(CxeError::Id error);
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    // notification for when camera is released
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    void prepareForRelease();
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    // Handle ECam events
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    void handleCameraEvent( int eventUid, int error );
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    void handleSceneChanged(CxeScene& scene);
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private:
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    // handles to-do things if the event is AF event
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    void handleAfEvent(int eventUid, int error);
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protected:
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    CxeCameraDevice &mCameraDevice;
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    CCamera::CCameraAdvancedSettings *mAdvancedSettings; // not owned
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    CxeAutoFocusControl::Mode mAfMode;
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    CCamera::CCameraAdvancedSettings::TFocusRange mAFRange;
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    bool mCancelled;
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    };
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#endif // CXEAUTOFOCUSCONTROLSYMBIAN_H