1 /*

     2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 *

    16 */

    17 #ifndef __CXEVIEWFINDERCONTROLSYMBIAN_H__

    18 #define __CXEVIEWFINDERCONTROLSYMBIAN_H__

    19 

    20 //  Include Files

    21 #include <ecam.h>

    22 #include "cxeviewfindercontrol.h"

    23 #include "cxestatemachine.h"

    24 #include "cxesettings.h"

    25 

    26 //  Constants

    27 

    28 

    29 //  Class Definitions

    30 

    31 class CxeCameraDeviceControl;

    32 class CxeCameraDevice;

    33 class RWindowBase;

    34 class CxeVideoContainer;

    35 

    36 

    37 

    38 class CxeViewfinderControlSymbian : public CxeViewfinderControl,

    39                                     public CxeStateMachine

    40 {

    41     Q_OBJECT

    42 

    43 public:

    44 

    45     CxeViewfinderControlSymbian(CxeCameraDevice &cameraDevice,

    46             CxeCameraDeviceControl &mCameraDeviceControl);

    47     virtual ~CxeViewfinderControlSymbian();

    48 

    49 public: // from base class

    50 

    51     void setWindow(WId windowId);

    52 

    53     /*

    54     * stops the view finder.

    55     */

    56     void stop();

    57 

    58     /*

    59     * Get current state of view finder control

    60     * returns one of Vf states defined above.

    61     */

    62     State state() const;

    63 

    64     /*

    65     * Start view finder

    66     * @returns CxeError::Id error code

    67     */

    68     CxeError::Id start();

    69 

    70     /*!

    71     * Returns Device's Display resolution

    72     */

    73     QSize deviceDisplayResolution() const;

    74 

    75 protected: // from CxeStateMachine

    76     void handleStateChanged(int newStateId, CxeError::Id error);

    77 

    78 protected:

    79     void initializeStates();

    80 

    81 protected slots:

    82     // notifications when camera reference is changed

    83     void prepareForCameraDelete();

    84     void handleCameraAllocated(CxeError::Id error);

    85     void handleVfFrame(MCameraBuffer* buffer, int error);

    86     void prepareForRelease();

    87 

    88 private:

    89     /*

    90     * Intializes viewfinder based on VF mode

    91     * returns CxeEngine Std error code

    92     */

    93     int initViewfinder();

    94     void createViewfinderWindowL();

    95     void releaseCurrentViewfinder();

    96 

    97 private:

    98     // data members

    99     CxeCameraDevice &mCameraDevice;

   100     CxeCameraDeviceControl &mCameraDeviceControl;

   101 

   102     RWindowBase *mUiWindow;

   103     RWindowBase *mVideoWindow;

   104     CxeVideoContainer *mVideoContainer;

   105 

   106     TRect mWindowRect;

   107     CCamera::CCameraDirectViewFinder *mDirectViewfinder;

   108 

   109     bool mDirectViewfinderInUse;

   110 };

   111 

   112 

   113 

   114 #endif  // __CXEVIEWFINDERCONTROLSYMBIAN_H__

   115