VideoPlayer.h

#ifndef VIDEOPLAYER_H
#define VIDEOPLAYER_H
#include "CVImage.h"
#include "VideoPlayerImpl.h"
#include <QObject>
#include <QTimer>
/* Video Support is limited to OpenCV Due to the RealTime Request */
namespace cv {
class VideoCapture;
};
 
namespace VideoPlayerTools {
 
qint64 frame_to_mseconds(int frame, int fps);
 
qint64 mseconds_to_frame(qint64 msec, int fps);
}
 
class VideoPlayer : public QObject {
    Q_OBJECT
public:
    explicit VideoPlayer(QObject* parent = nullptr);
    ~VideoPlayer();
 
    bool open(const char* video_path);
 
    QString current_handle() const { return last_open; }
 
    bool close();
 
    bool play();
 
    bool pause();
    /* get the total frame */
 
    int total_frame() const;
 
    inline int total_msecs() const {
        return VideoPlayerTools::frame_to_mseconds(
            total_frame(), info.fps);
    }
 
    inline VideoPlayerInfo get_info() const { return info; }
    int current_frame() const;
 
    bool valid_video() const;
 
    bool is_playing() const;
 
    qint64 currentFrameMSec() const;
 
    bool setCurrentFrameMSec(const qint64 msec);
 
    void escapeFrame();
 
    bool peekFrame(CVImage& container, int frame_request);
signals:
    void openError(const VideoPlayerOpenErrorCode error);
 
    void frameReady(const CVImage image);
 
    void about_fetch_frame();
 
    void videoEnd();
 
private slots:
    void time_to_fetch_next_frame();
 
private:
    VideoPlayerImpl* impl { nullptr }; 
    bool on_play { false }; 
    VideoPlayerInfo info; 
    int play_sleep { 0 }; 
    QString last_open {}; 
};
 
#endif // VIDEOPLAYER_H