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#! /usr/bin/env python3
#
# PyQt5-based video-sync example for VLC Python bindings
# Copyright (C) 2009-2010 the VideoLAN team
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
#
"""
This module contains a bare-bones VLC player class to play videos.
Author: Saveliy Yusufov, Columbia University, sy2685@columbia.edu
Date: 25 January 2019
"""
import os
import sys
import queue
import platform
from PyQt5 import QtWidgets, QtGui, QtCore
import vlc
from network import Client
class MiniPlayer(QtWidgets.QMainWindow):
"""Stripped-down PyQt5-based media player class to sync with "master" video.
"""
def __init__(self, data_queue, master=None):
QtWidgets.QMainWindow.__init__(self, master)
self.setWindowTitle("Mini Player")
self.statusbar = self.statusBar()
self.statusbar.showMessage("Ready")
# 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.init_ui()
self.open_file()
self.timer = QtCore.QTimer(self)
self.timer.setInterval(10)
self.timer.timeout.connect(self.update_ui)
self.data_queue = data_queue
self.timer.start()
def init_ui(self):
"""Set up the user interface
"""
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.vboxlayout = QtWidgets.QVBoxLayout()
self.vboxlayout.addWidget(self.videoframe)
self.widget.setLayout(self.vboxlayout)
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[0]:
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 the window title
self.setWindowTitle("{}".format(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()))
# Start playing the video as soon as it loads
self.mediaplayer.play()
def update_ui(self):
self.update_statusbar()
try:
val = self.data_queue.get(block=False)
except queue.Empty:
return
if val == '<':
self.mediaplayer.set_rate(self.mediaplayer.get_rate() * 0.5)
return
if val == '>':
self.mediaplayer.set_rate(self.mediaplayer.get_rate() * 2)
return
if val == 'P':
self.mediaplayer.play()
return
if val == 'p':
self.mediaplayer.pause()
return
if val == 'S':
self.mediaplayer.stop()
return
val = int(val)
if val != self.mediaplayer.get_time():
self.mediaplayer.set_time(val)
def update_statusbar(self):
mtime = QtCore.QTime(0, 0, 0, 0)
time = mtime.addMSecs(self.mediaplayer.get_time())
self.statusbar.showMessage(time.toString())
def main():
"""Entry point for our simple vlc player
"""
app = QtWidgets.QApplication(sys.argv)
data_queue = queue.Queue()
player = MiniPlayer(data_queue)
player.show()
player.resize(480, 480)
_ = Client("localhost", 10000, data_queue)
sys.exit(app.exec_())
if __name__ == "__main__":
main()
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