- Qt 5.5
- Qt Multimedia Widgets
- Camera Example
- camera.h Example File
- Qt 5.5.1 Reference Documentation

# camera.h Example File

camera/camera.h

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the examples of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** You may use this file under the terms of the BSD license as follows:
    **
    ** "Redistribution and use in source and binary forms, with or without
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    #ifndef CAMERA_H
    #define CAMERA_H

    #include <QCamera>
    #include <QCameraImageCapture>
    #include <QMediaRecorder>

    #include <QMainWindow>

    namespace Ui { class Camera; }

    class Camera : public QMainWindow
    {
        Q_OBJECT

    public:
        Camera(QWidget *parent = 0);
        ~Camera();

    private slots:
        void setCamera(const QCameraInfo &cameraInfo);

        void startCamera();
        void stopCamera();

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

        void toggleLock();
        void takeImage();
        void displayCaptureError(int, QCameraImageCapture::Error, const QString &errorString);

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

        void displayRecorderError();
        void displayCameraError();

        void updateCameraDevice(QAction *action);

        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 ready);
        void imageSaved(int id, const QString &fileName);

    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