1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
|
#! /usr/bin/python
#
# Qt 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.
#
import sys
import os.path
import vlc
from PyQt4 import QtGui, QtCore
try:
unicode # Python 2
except NameError:
unicode = str # Python 3
class Player(QtGui.QMainWindow):
"""A simple Media Player using VLC and Qt
"""
def __init__(self, master=None):
QtGui.QMainWindow.__init__(self, master)
self.setWindowTitle("Media Player")
# creating a basic vlc instance
self.instance = vlc.Instance()
# creating an empty vlc media player
self.mediaplayer = self.instance.media_player_new()
self.createUI()
self.isPaused = False
def createUI(self):
"""Set up the user interface, signals & slots
"""
self.widget = QtGui.QWidget(self)
self.setCentralWidget(self.widget)
# In this widget, the video will be drawn
if sys.platform == "darwin": # for MacOS
self.videoframe = QtGui.QMacCocoaViewContainer(0)
else:
self.videoframe = QtGui.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 = QtGui.QSlider(QtCore.Qt.Horizontal, self)
self.positionslider.setToolTip("Position")
self.positionslider.setMaximum(1000)
self.connect(self.positionslider,
QtCore.SIGNAL("sliderMoved(int)"), self.setPosition)
self.hbuttonbox = QtGui.QHBoxLayout()
self.playbutton = QtGui.QPushButton("Play")
self.hbuttonbox.addWidget(self.playbutton)
self.connect(self.playbutton, QtCore.SIGNAL("clicked()"),
self.PlayPause)
self.stopbutton = QtGui.QPushButton("Stop")
self.hbuttonbox.addWidget(self.stopbutton)
self.connect(self.stopbutton, QtCore.SIGNAL("clicked()"),
self.Stop)
self.hbuttonbox.addStretch(1)
self.volumeslider = QtGui.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.connect(self.volumeslider,
QtCore.SIGNAL("valueChanged(int)"),
self.setVolume)
self.vboxlayout = QtGui.QVBoxLayout()
self.vboxlayout.addWidget(self.videoframe)
self.vboxlayout.addWidget(self.positionslider)
self.vboxlayout.addLayout(self.hbuttonbox)
self.widget.setLayout(self.vboxlayout)
open = QtGui.QAction("&Open", self)
self.connect(open, QtCore.SIGNAL("triggered()"), self.OpenFile)
exit = QtGui.QAction("&Exit", self)
self.connect(exit, QtCore.SIGNAL("triggered()"), sys.exit)
menubar = self.menuBar()
filemenu = menubar.addMenu("&File")
filemenu.addAction(open)
filemenu.addSeparator()
filemenu.addAction(exit)
self.timer = QtCore.QTimer(self)
self.timer.setInterval(200)
self.connect(self.timer, QtCore.SIGNAL("timeout()"),
self.updateUI)
def PlayPause(self):
"""Toggle play/pause status
"""
if self.mediaplayer.is_playing():
self.mediaplayer.pause()
self.playbutton.setText("Play")
self.isPaused = True
else:
if self.mediaplayer.play() == -1:
self.OpenFile()
return
self.mediaplayer.play()
self.playbutton.setText("Pause")
self.timer.start()
self.isPaused = False
def Stop(self):
"""Stop player
"""
self.mediaplayer.stop()
self.playbutton.setText("Play")
def OpenFile(self, filename=None):
"""Open a media file in a MediaPlayer
"""
if filename is None:
filename = QtGui.QFileDialog.getOpenFileName(self, "Open File", os.path.expanduser('~'))
if not filename:
return
# create the media
if sys.version < '3':
filename = unicode(filename)
self.media = self.instance.media_new(filename)
# 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 a video would be displayed in it's own window)
# this is platform specific!
# you have to give the id of the QFrame (or similar object) to
# vlc, different platforms have different functions for this
if sys.platform.startswith('linux'): # for Linux using the X Server
self.mediaplayer.set_xwindow(self.videoframe.winId())
elif sys.platform == "win32": # for Windows
self.mediaplayer.set_hwnd(self.videoframe.winId())
elif sys.platform == "darwin": # for MacOS
self.mediaplayer.set_nsobject(self.videoframe.winId())
self.PlayPause()
def setVolume(self, Volume):
"""Set the volume
"""
self.mediaplayer.audio_set_volume(Volume)
def setPosition(self, position):
"""Set the position
"""
# setting the position to where the slider was dragged
self.mediaplayer.set_position(position / 1000.0)
# 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 be enough)
def updateUI(self):
"""updates the user interface"""
# setting the slider to the desired position
self.positionslider.setValue(self.mediaplayer.get_position() * 1000)
if not self.mediaplayer.is_playing():
# no need to call this function if nothing is played
self.timer.stop()
if not self.isPaused:
# after the video finished, the play button stills shows
# "Pause", not the desired behavior of a media player
# this will fix it
self.Stop()
if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
player = Player()
player.show()
player.resize(640, 480)
if sys.argv[1:]:
player.OpenFile(sys.argv[1])
sys.exit(app.exec_())
|
