[vlc-devel] [vlc-commits] Add python-qt5 example
Rémi Denis-Courmont
remi at remlab.net
Thu Jan 31 09:55:55 CET 2019
Olivier, this change does not seem to follow our author naming policies ☹️
Le 31 janvier 2019 00:29:20 GMT+02:00, Saveliy <git at videolan.org> a écrit :
>vlc/python | branch: master | Saveliy <saveliy.m.yusufov at gmail.com> |
>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, sy2685 at columbia.edu
>+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()
>
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>vlc-commits at videolan.org
>https://mailman.videolan.org/listinfo/vlc-commits
--
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