videoframes.py 文件源码

def rewind(self):
        if not cfg[CONFIG_BUFFER_STREAM]:
            QtWidgets.QMessageBox().warning(
                self,
                "Warning",
                "Cannot Rewind. You currently have buffering turned off."
            )
            return
        if self.rewound is None:
            self.rewound = QtWidgets.QMainWindow(parent=self)
            self.rewound.setWindowTitle("Rewound Stream")
            self.rewound.resize(QtWidgets.QDesktopWidget().availableGeometry(-1).size() * 0.5)
            self.rewound.frame = RewoundVideoFrame(self.rewound, self.stream.buffer)
            # Set events:
            self.rewound.closeEvent = self.close_rewound
            self.rewound.frame._fullscreen = self.fullscreen_rewound

            self.rewound.setCentralWidget(self.rewound.frame)
            self.rewound.show()
            # Init values
            self.rewound.is_fullscreen = False

    # Following functions belong to the rewound window