camerauis/cameraxui/cxengine/inc/cxecameradevicecontrolsymbian.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 31 Aug 2010 15:03:46 +0300
branchRCL_3
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/*
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* Copyright (c) 2009-2010 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 CXECAMERADEVICECONTROLSYMBIAN_H
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#define CXECAMERADEVICECONTROLSYMBIAN_H
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//  Include Files
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#include <QTimer>
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#include "cxecameradevicecontrol.h"
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#include "cxecameradevice.h"
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#include "cxestatemachine.h"
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#include "cxeerror.h"
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class CxeCameraDeviceControlSymbian : public CxeCameraDeviceControl,
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                                      public CxeStateMachine,
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                                      public MCameraObserver2
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{
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    Q_OBJECT
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public:
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    CxeCameraDeviceControlSymbian();
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    virtual ~CxeCameraDeviceControlSymbian();
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public: // from CxeCameraDeviceControl
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    /**
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    * Calls newCamera and emits initModeComplete() on error.
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    * This is in a separate method and not in the constructor so that
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    * newCamera() can be properly overridden in derived classes.
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    */
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    void init();
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    Cxe::CameraMode mode() const;
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    void setMode(Cxe::CameraMode mode);
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    void reserve();
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    void release();
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    Cxe::CameraIndex cameraIndex() const;
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    CxeError::Id switchCamera(Cxe::CameraIndex index);
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    State state() const;
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    CxeCameraDevice *cameraDevice();
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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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    void powerOn();
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    void prepare(int mode);
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    void releaseCurrentCamera();
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    void doHandleEvent(const TECAMEvent &aEvent);
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    void handleReserveComplete(int error);
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    void handlePowerOnComplete(int error);
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    void handleNoLongerReserved(int error);
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protected: // from MCameraObserver2
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    void HandleEvent(const TECAMEvent &aEvent);
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    void ViewFinderReady(MCameraBuffer &aCameraBuffer, TInt aError);
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    void ImageBufferReady(MCameraBuffer &aCameraBuffer, TInt aError);
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    void VideoBufferReady(MCameraBuffer &aCameraBuffer, TInt aError);
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signals:
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    void cameraEvent(int eventUid, int error); // ECam events
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    void imageBufferReady(MCameraBuffer* buffer, int error);
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    void deviceReady(); // device is ready to prepared in either still or video mode
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    void vfFrameReady(MCameraBuffer* buffer, int error);
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private slots:
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    void doReserve();
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protected: // Protected data so that unit test cases can replace
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           // mCameraDevice with a fake implementation.
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    CxeCameraDevice *mCameraDevice; // own
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protected: // data
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    Cxe::CameraIndex mCameraIndex;
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    Cxe::CameraMode  mCameraMode;
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    QTimer mReserveTimer;
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};
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#endif  // CXECAMERADEVICECONTROLSYMBIAN_H
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