/*
*   V I D E O F R A M E G R A B B E R . H
*   --------------------------------------
*
*   Module   : Video screeen capture class.
*/

#pragma once

#include <QtCore>
#include <QQuickItem>
#include <mutex>

// Library:

#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
class QCameraInfo;
class QCameraViewfinderSettings;
#else
class QVideoFrame;
class QCameraDevice;
class QCameraFormat;
#endif

class QCamera;

#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
class UIVideoFrameGrabber
{
#else
class UIVideoFrameGrabber : public QQuickItem
{
    Q_OBJECT
#endif

public:
    static UIVideoFrameGrabber* Instance();

    UIVideoFrameGrabber();
    ~UIVideoFrameGrabber();

    void OpenVideo(class QImage& Buffer, std::mutex& mutex);
    void CloseVideo();
    bool IsOpen() const;

    bool StartVideo();
    void StopVideo();

#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
private:
    void LogCameraDetails(const QCameraInfo* info, QCamera* camera);
    void LogSettings(const QCameraViewfinderSettings& settings);
#else
public slots:
    void onVideoFrameChanged(const QVideoFrame& frame);

private:
    void SelectVideoFormat(QCamera* selectedCamera, const QCameraDevice* selectedCameraDevice);
    void LogCameraDetails(const QCameraDevice* device);
    void LogAllCameraFormats(const QCameraDevice* device);
    void LogCameraFormat(const QCameraFormat& cameraFormat);
#endif
    void LogStatus();

    static UIVideoFrameGrabber* _This;
    struct VideoContext* _VideoContext;
};