camera.h Example File

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 #ifndef CAMERA_H
 #define CAMERA_H

 #include <qcamera.h>
 #include <qmediarecorder.h>
 #include <qcameraimagecapture.h>

 namespace Ui {
     class Camera;
 }
 class QCameraViewfinder;

 #include <QMainWindow>
 #include <QDir>

 QT_USE_NAMESPACE

 class Camera : public QMainWindow
 {
     Q_OBJECT
 public:
     Camera(QWidget *parent = 0);
     ~Camera();

 private slots:
     void setCamera(const QByteArray &cameraDevice);

     void startCamera();
     void stopCamera();

     void record();
     void pause();
     void stop();
     void setMuted(bool);

     void toggleLock();
     void takeImage();

     void configureCaptureSettings();
     void configureVideoSettings();
     void configureImageSettings();

     void displayRecorderError();
     void displayCameraError();

     void updateCameraDevice(QAction*);

     void updateCameraState(QCamera::State);
     void updateCaptureMode();
     void updateRecorderState(QMediaRecorder::State state);
     void setExposureCompensation(int index);

     void updateRecordTime();

     void processCapturedImage(int requestId, const QImage& img);
     void updateLockStatus(QCamera::LockStatus, QCamera::LockChangeReason);

     void displayViewfinder();
     void displayCapturedImage();

     void readyForCapture(bool);
     void imageSaved(int, const QString&);

 protected:
     void keyPressEvent(QKeyEvent * event);
     void keyReleaseEvent(QKeyEvent * event);
     void closeEvent(QCloseEvent *event );

 private:
     Ui::Camera *ui;

     QCamera *camera;
     QCameraImageCapture *imageCapture;
     QMediaRecorder* mediaRecorder;

     QImageEncoderSettings imageSettings;
     QAudioEncoderSettings audioSettings;
     QVideoEncoderSettings videoSettings;
     QString videoContainerFormat;
     bool isCapturingImage;
     bool applicationExiting;
 };

 #endif