vlc/python | branch: master | Saveliy <[email protected]> | Wed Dec 26 12:54:26 2018 -0500| [60aa8ea5763a3f93829b5bbaabb6c1011994b2a2] | committer: Olivier Aubert
Add python-qt5 example > http://git.videolan.org/gitweb.cgi/vlc/python.git/?a=commit;h=60aa8ea5763a3f93829b5bbaabb6c1011994b2a2 --- examples/pyqt5vlc.py | 205 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 205 insertions(+) diff --git a/examples/pyqt5vlc.py b/examples/pyqt5vlc.py new file mode 100644 index 0000000..abf0cf2 --- /dev/null +++ b/examples/pyqt5vlc.py @@ -0,0 +1,205 @@ +""" +A simple example for VLC python bindings using PyQt5. + +Author: Saveliy Yusufov, Columbia University, [email protected] +Date: 25 December 2018 +""" + +import platform +import os +import sys + +from PyQt5 import QtWidgets, QtGui, QtCore +import vlc + +class Player(QtWidgets.QMainWindow): + """A simple Media Player using VLC and Qt + """ + + def __init__(self, master=None): + QtWidgets.QMainWindow.__init__(self, master) + self.setWindowTitle("Media Player") + + # Create a basic vlc instance + self.instance = vlc.Instance() + + self.media = None + + # Create an empty vlc media player + self.mediaplayer = self.instance.media_player_new() + + self.create_ui() + self.is_paused = False + + def create_ui(self): + """Set up the user interface, signals & slots + """ + self.widget = QtWidgets.QWidget(self) + self.setCentralWidget(self.widget) + + # In this widget, the video will be drawn + if platform.system() == "Darwin": # for MacOS + self.videoframe = QtWidgets.QMacCocoaViewContainer(0) + else: + self.videoframe = QtWidgets.QFrame() + + self.palette = self.videoframe.palette() + self.palette.setColor(QtGui.QPalette.Window, QtGui.QColor(0, 0, 0)) + self.videoframe.setPalette(self.palette) + self.videoframe.setAutoFillBackground(True) + + self.positionslider = QtWidgets.QSlider(QtCore.Qt.Horizontal, self) + self.positionslider.setToolTip("Position") + self.positionslider.setMaximum(1000) + self.positionslider.sliderMoved.connect(self.set_position) + self.positionslider.sliderPressed.connect(self.set_position) + + self.hbuttonbox = QtWidgets.QHBoxLayout() + self.playbutton = QtWidgets.QPushButton("Play") + self.hbuttonbox.addWidget(self.playbutton) + self.playbutton.clicked.connect(self.play_pause) + + self.stopbutton = QtWidgets.QPushButton("Stop") + self.hbuttonbox.addWidget(self.stopbutton) + self.stopbutton.clicked.connect(self.stop) + + self.hbuttonbox.addStretch(1) + self.volumeslider = QtWidgets.QSlider(QtCore.Qt.Horizontal, self) + self.volumeslider.setMaximum(100) + self.volumeslider.setValue(self.mediaplayer.audio_get_volume()) + self.volumeslider.setToolTip("Volume") + self.hbuttonbox.addWidget(self.volumeslider) + self.volumeslider.valueChanged.connect(self.set_volume) + + self.vboxlayout = QtWidgets.QVBoxLayout() + self.vboxlayout.addWidget(self.videoframe) + self.vboxlayout.addWidget(self.positionslider) + self.vboxlayout.addLayout(self.hbuttonbox) + + self.widget.setLayout(self.vboxlayout) + + menu_bar = self.menuBar() + + # File menu + file_menu = menu_bar.addMenu("File") + + # Add actions to file menu + open_action = QtWidgets.QAction("Load Video", self) + close_action = QtWidgets.QAction("Close App", self) + file_menu.addAction(open_action) + file_menu.addAction(close_action) + + open_action.triggered.connect(self.open_file) + close_action.triggered.connect(sys.exit) + + self.timer = QtCore.QTimer(self) + self.timer.setInterval(100) + self.timer.timeout.connect(self.update_ui) + + def play_pause(self): + """Toggle play/pause status + """ + if self.mediaplayer.is_playing(): + self.mediaplayer.pause() + self.playbutton.setText("Play") + self.is_paused = True + self.timer.stop() + else: + if self.mediaplayer.play() == -1: + self.open_file() + return + + self.mediaplayer.play() + self.playbutton.setText("Pause") + self.timer.start() + self.is_paused = False + + def stop(self): + """Stop player + """ + self.mediaplayer.stop() + self.playbutton.setText("Play") + + def open_file(self): + """Open a media file in a MediaPlayer + """ + + dialog_txt = "Choose Media File" + filename = QtWidgets.QFileDialog.getOpenFileName(self, dialog_txt, os.path.expanduser('~')) + if not filename: + return + + # getOpenFileName returns a tuple, so use only the actual file name + self.media = self.instance.media_new(filename[0]) + + # Put the media in the media player + self.mediaplayer.set_media(self.media) + + # Parse the metadata of the file + self.media.parse() + + # Set the title of the track as window title + self.setWindowTitle(self.media.get_meta(0)) + + # The media player has to be 'connected' to the QFrame (otherwise the + # video would be displayed in it's own window). This is platform + # specific, so we must give the ID of the QFrame (or similar object) to + # vlc. Different platforms have different functions for this + if platform.system() == "Linux": # for Linux using the X Server + self.mediaplayer.set_xwindow(int(self.videoframe.winId())) + elif platform.system() == "Windows": # for Windows + self.mediaplayer.set_hwnd(int(self.videoframe.winId())) + elif platform.system() == "Darwin": # for MacOS + self.mediaplayer.set_nsobject(int(self.videoframe.winId())) + + self.play_pause() + + def set_volume(self, volume): + """Set the volume + """ + self.mediaplayer.audio_set_volume(volume) + + def set_position(self): + """Set the movie position according to the position slider. + """ + + # The vlc MediaPlayer needs a float value between 0 and 1, Qt uses + # integer variables, so you need a factor; the higher the factor, the + # more precise are the results (1000 should suffice). + + # Set the media position to where the slider was dragged + self.timer.stop() + pos = self.positionslider.value() + self.mediaplayer.set_position(pos / 1000.0) + self.timer.start() + + def update_ui(self): + """Updates the user interface""" + + # Set the slider's position to its corresponding media position + # Note that the setValue function only takes values of type int, + # so we must first convert the corresponding media position. + media_pos = int(self.mediaplayer.get_position() * 1000) + self.positionslider.setValue(media_pos) + + # No need to call this function if nothing is played + if not self.mediaplayer.is_playing(): + self.timer.stop() + + # After the video finished, the play button stills shows "Pause", + # which is not the desired behavior of a media player. + # This fixes that "bug". + if not self.is_paused: + self.stop() + +def main(): + """Entry point for our simple vlc player + """ + app = QtWidgets.QApplication(sys.argv) + player = Player() + player.show() + player.resize(640, 480) + sys.exit(app.exec_()) + +if __name__ == "__main__": + main() _______________________________________________ vlc-commits mailing list [email protected] https://mailman.videolan.org/listinfo/vlc-commits
