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#! /usr/bin/env python3
#
# gtk3 example/widget for VLC Python bindings
# Copyright (C) 2017 Olivier Aubert <contact@olivieraubert.net>
#
# 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.
#
"""VLC Gtk3 Widget classes + example application.
This module provides two helper classes, to ease the embedding of a
VLC component inside a pygtk application.
VLCWidget is a simple VLC widget.
DecoratedVLCWidget provides simple player controls.
When called as an application, it behaves as a video player.
"""
import gi
gi.require_version('Gdk', '3.0')
gi.require_version('Gtk', '3.0')
from gi.repository import Gdk
from gi.repository import Gtk
Gdk.threads_init ()
import sys
import ctypes
import vlc
from gettext import gettext as _
# Create a single vlc.Instance() to be shared by (possible) multiple players.
if 'linux' in sys.platform:
# Inform libvlc that Xlib is not initialized for threads
instance = vlc.Instance("--no-xlib")
else:
instance = vlc.Instance()
def get_window_pointer(window):
""" Use the window.__gpointer__ PyCapsule to get the C void* pointer to the window
"""
# get the c gpointer of the gdk window
ctypes.pythonapi.PyCapsule_GetPointer.restype = ctypes.c_void_p
ctypes.pythonapi.PyCapsule_GetPointer.argtypes = [ctypes.py_object]
return ctypes.pythonapi.PyCapsule_GetPointer(window.__gpointer__, None)
class VLCWidget(Gtk.DrawingArea):
"""Simple VLC widget.
Its player can be controlled through the 'player' attribute, which
is a vlc.MediaPlayer() instance.
"""
__gtype_name__ = 'VLCWidget'
def __init__(self, *p):
Gtk.DrawingArea.__init__(self)
self.player = instance.media_player_new()
def handle_embed(*args):
if sys.platform == 'win32':
# get the win32 handle
gdkdll = ctypes.CDLL('libgdk-3-0.dll')
handle = gdkdll.gdk_win32_window_get_handle(get_window_pointer(self.get_window()))
self.player.set_hwnd(handle)
elif sys.platform == 'darwin':
# get the nsview pointer. NB need to manually specify function signature
gdkdll = ctypes.CDLL('libgdk-3.0.dll')
get_nsview = gdkdll.gdk_quaerz_window_get_nsview
get_nsview.restype, get_nsview.argtypes = [ctypes.c_void_p], ctypes.c_void_p
self.player.set_nsobject(get_nsview(get_window_pointer(self.get_window())))
else:
self.player.set_xwindow(self.get_window().get_xid())
return True
self.connect("realize", handle_embed)
self.set_size_request(320, 200)
class DecoratedVLCWidget(Gtk.VBox):
"""Decorated VLC widget.
VLC widget decorated with a player control toolbar.
Its player can be controlled through the 'player' attribute, which
is a Player instance.
"""
__gtype_name__ = 'DecoratedVLCWidget'
def __init__(self, *p):
super(DecoratedVLCWidget, self).__init__()
self._vlc_widget = VLCWidget(*p)
self.player = self._vlc_widget.player
self.add(self._vlc_widget)
self._toolbar = self.get_player_control_toolbar()
self.pack_start(self._toolbar, False, False, 0)
self.show_all()
def get_player_control_toolbar(self):
"""Return a player control toolbar
"""
tb = Gtk.Toolbar.new()
for text, tooltip, iconname, callback in (
(_("Play"), _("Play"), 'gtk-media-play', lambda b: self.player.play()),
(_("Pause"), _("Pause"), 'gtk-media-pause', lambda b: self.player.pause()),
(_("Stop"), _("Stop"), 'gtk-media-stop', lambda b: self.player.stop()),
(_("Quit"), _("Quit"), 'gtk-quit', Gtk.main_quit),
):
i = Gtk.Image.new_from_icon_name(iconname, Gtk.IconSize.MENU)
b = Gtk.ToolButton.new(i, text)
b.set_tooltip_text(tooltip)
b.connect("clicked", callback)
tb.insert(b, -1)
return tb
class VideoPlayer:
"""Example simple video player.
"""
def __init__(self):
self.vlc = DecoratedVLCWidget()
def main(self, fname):
self.vlc.player.set_media(instance.media_new(fname))
w = Gtk.Window()
w.add(self.vlc)
w.show_all()
w.connect("destroy", Gtk.main_quit)
Gtk.main()
class MultiVideoPlayer:
"""Example multi-video player.
It plays multiple files side-by-side, with per-view and global controls.
"""
def main(self, filenames):
# Build main window
window=Gtk.Window()
mainbox=Gtk.VBox()
videos=Gtk.HBox()
window.add(mainbox)
mainbox.add(videos)
# Create VLC widgets
for fname in filenames:
v = DecoratedVLCWidget()
v.player.set_media(instance.media_new(fname))
videos.add(v)
# Create global toolbar
tb = Gtk.Toolbar.new()
def execute(b, methodname):
"""Execute the given method on all VLC widgets.
"""
for v in videos.get_children():
getattr(v.player, methodname)()
return True
for text, tooltip, iconname, callback, arg in (
(_("Play"), _("Global play"), 'gtk-media-play', execute, "play"),
(_("Pause"), _("Global pause"), 'gtk-media-pause', execute, "pause"),
(_("Stop"), _("Global stop"), 'gtk-media-stop', execute, "stop"),
(_("Quit"), _("Quit"), 'gtk-quit', Gtk.main_quit, None),
):
i = Gtk.Image.new_from_icon_name(iconname, Gtk.IconSize.MENU)
b = Gtk.ToolButton.new(i, text)
b.set_tooltip_text(tooltip)
b.connect("clicked", callback, arg)
tb.insert(b, -1)
mainbox.pack_start(tb, False, False, 0)
window.show_all()
window.connect("destroy", Gtk.main_quit)
Gtk.main()
if __name__ == '__main__':
if not sys.argv[1:]:
print('You must provide at least 1 movie filename')
sys.exit(1)
if len(sys.argv[1:]) == 1:
# Only 1 file. Simple interface
p=VideoPlayer()
from evaluator import Evaluator
e = Evaluator(globals(), locals())
e.popup()
p.main(sys.argv[1])
else:
# Multiple files.
p=MultiVideoPlayer()
p.main(sys.argv[1:])
instance.release()
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