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-#
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-# PyQt5 example for VLC Python bindings
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-# Copyright (C) 2009-2010 the VideoLAN team
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-#
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-# This program is free software; you can redistribute it and/or modify
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-# it under the terms of the GNU General Public License as published by
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-# the Free Software Foundation; either version 2 of the License, or
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-# (at your option) any later version.
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-#
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-# This program is distributed in the hope that it will be useful,
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-# but WITHOUT ANY WARRANTY; without even the implied warranty of
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-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-# GNU General Public License for more details.
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-#
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-# You should have received a copy of the GNU General Public License
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-# along with this program; if not, write to the Free Software
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-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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-#
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-"""
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-A simple example for VLC python bindings using PyQt5.
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-
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-Author: Saveliy Yusufov, Columbia University, sy2685@columbia.edu
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-Date: 25 December 2018
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-"""
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-import mimetypes
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-import platform
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-import os
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-import sys
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-
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-from PyQt5 import QtWidgets, QtGui, QtCore
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-
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-from core import constants
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-
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-os.environ['PYTHON_VLC_LIB_PATH'] = constants.APP_ROOT / 'core' / 'vlc-core' / 'libvlc.dll'
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-if 1:
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- import vlc
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-
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-class Player(QtWidgets.QMainWindow):
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- """A simple Media Player using VLC and Qt
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- """
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-
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- def __init__(self, master=None):
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- QtWidgets.QMainWindow.__init__(self, master)
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- self.setWindowTitle("Media Player")
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-
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- # Create a basic vlc instance
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- self.instance = vlc.Instance()
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-
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- self.media = None
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-
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- # Create an empty vlc media player
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- self.mediaplayer = self.instance.media_player_new()
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-
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- self.create_ui()
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- self.is_paused = False
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-
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- def create_ui(self):
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- """Set up the user interface, signals & slots
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- """
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- self.widget = QtWidgets.QWidget(self)
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- self.setCentralWidget(self.widget)
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-
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- # In this widget, the video will be drawn
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- if platform.system() == "Darwin": # for MacOS
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- self.videoframe = QtWidgets.QMacCocoaViewContainer(0)
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- else:
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- self.videoframe = QtWidgets.QFrame()
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-
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- self.palette = self.videoframe.palette()
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- self.palette.setColor(QtGui.QPalette.Window, QtGui.QColor(0, 0, 0))
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- self.videoframe.setPalette(self.palette)
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- self.videoframe.setAutoFillBackground(True)
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-
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- self.positionslider = QtWidgets.QSlider(QtCore.Qt.Horizontal, self)
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- self.positionslider.setToolTip("Position")
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- self.positionslider.setMaximum(1000)
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- self.positionslider.sliderMoved.connect(self.set_position)
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- self.positionslider.sliderPressed.connect(self.set_position)
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-
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- self.hbuttonbox = QtWidgets.QHBoxLayout()
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- self.playbutton = QtWidgets.QPushButton("Play")
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- self.hbuttonbox.addWidget(self.playbutton)
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- self.playbutton.clicked.connect(self.play_pause)
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-
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- self.stopbutton = QtWidgets.QPushButton("Stop")
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- self.hbuttonbox.addWidget(self.stopbutton)
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- self.stopbutton.clicked.connect(self.stop)
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-
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- self.hbuttonbox.addStretch(1)
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- self.volumeslider = QtWidgets.QSlider(QtCore.Qt.Horizontal, self)
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- self.volumeslider.setMaximum(100)
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- self.volumeslider.setValue(self.mediaplayer.audio_get_volume())
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- self.volumeslider.setToolTip("Volume")
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- self.hbuttonbox.addWidget(self.volumeslider)
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- self.volumeslider.valueChanged.connect(self.set_volume)
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-
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- self.vboxlayout = QtWidgets.QVBoxLayout()
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- self.vboxlayout.addWidget(self.videoframe)
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- self.vboxlayout.addWidget(self.positionslider)
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- self.vboxlayout.addLayout(self.hbuttonbox)
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-
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- self.widget.setLayout(self.vboxlayout)
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-
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- menu_bar = self.menuBar()
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-
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- # File menu
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- file_menu = menu_bar.addMenu("File")
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-
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- # Add actions to file menu
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- open_action = QtWidgets.QAction("Load Video", self)
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- close_action = QtWidgets.QAction("Close App", self)
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- file_menu.addAction(open_action)
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- file_menu.addAction(close_action)
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-
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- open_action.triggered.connect(self.open_file)
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- close_action.triggered.connect(sys.exit)
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-
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- self.timer = QtCore.QTimer(self)
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- self.timer.setInterval(100)
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- self.timer.timeout.connect(self.update_ui)
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-
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- def play_pause(self):
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- """Toggle play/pause status
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- """
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- if self.mediaplayer.is_playing():
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- self.mediaplayer.pause()
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- self.playbutton.setText("Play")
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- self.is_paused = True
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- self.timer.stop()
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- else:
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- if self.mediaplayer.play() == -1:
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- self.open_file()
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- return
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-
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- self.mediaplayer.play()
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- self.playbutton.setText("Pause")
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- self.timer.start()
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- self.is_paused = False
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-
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- def stop(self):
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- """Stop player
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- """
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- self.mediaplayer.stop()
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- self.playbutton.setText("Play")
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-
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- def open_file(self):
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- """Open a media file in a MediaPlayer
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- """
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-
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- dialog_txt = "Choose Media File"
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- filename = QtWidgets.QFileDialog.getOpenFileName(self, dialog_txt, os.path.expanduser('~'))
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- if not filename:
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- return
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-
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- # getOpenFileName returns a tuple, so use only the actual file name
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- self.media = self.instance.media_new(filename[0])
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-
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- # Put the media in the media player
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- self.mediaplayer.set_media(self.media)
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-
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- # Parse the metadata of the file
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- self.media.parse()
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-
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- # Set the title of the track as window title
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- self.setWindowTitle(self.media.get_meta(0))
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-
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- # The media player has to be 'connected' to the QFrame (otherwise the
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- # video would be displayed in it's own window). This is platform
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- # specific, so we must give the ID of the QFrame (or similar object) to
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- # vlc. Different platforms have different functions for this
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- if platform.system() == "Linux": # for Linux using the X Server
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- self.mediaplayer.set_xwindow(int(self.videoframe.winId()))
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- elif platform.system() == "Windows": # for Windows
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- self.mediaplayer.set_hwnd(int(self.videoframe.winId()))
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- elif platform.system() == "Darwin": # for MacOS
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- self.mediaplayer.set_nsobject(int(self.videoframe.winId()))
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-
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- self.play_pause()
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-
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- def set_volume(self, volume):
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- """Set the volume
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- """
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- self.mediaplayer.audio_set_volume(volume)
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-
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- def set_position(self):
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- """Set the movie position according to the position slider.
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- """
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-
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- # The vlc MediaPlayer needs a float value between 0 and 1, Qt uses
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- # integer variables, so you need a factor; the higher the factor, the
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- # more precise are the results (1000 should suffice).
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-
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- # Set the media position to where the slider was dragged
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- self.timer.stop()
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- pos = self.positionslider.value()
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- self.mediaplayer.set_position(pos / 1000.0)
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- self.timer.start()
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-
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- def update_ui(self):
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- """Updates the user interface"""
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-
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- # Set the slider's position to its corresponding media position
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- # Note that the setValue function only takes values of type int,
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- # so we must first convert the corresponding media position.
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- media_pos = int(self.mediaplayer.get_position() * 1000)
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- self.positionslider.setValue(media_pos)
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-
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- # No need to call this function if nothing is played
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- if not self.mediaplayer.is_playing():
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- self.timer.stop()
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-
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- # After the video finished, the play button stills shows "Pause",
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- # which is not the desired behavior of a media player.
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- # This fixes that "bug".
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- if not self.is_paused:
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- self.stop()
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-
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-
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-def main():
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- """Entry point for our simple vlc player
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- """
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- app = QtWidgets.QApplication(sys.argv)
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- player = Player()
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- player.show()
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- player.resize(640, 480)
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- sys.exit(app.exec_())
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-
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-
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-if __name__ == "__main__":
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- main()
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