Hi everyone,
I am migrating a old code written with GTK+ 2.X to GTK 3+ for play a .ogv
video with gstreamer.
The problem seems that the signal "sync-message::element" is never launched
(but if it is launched sync-message).
So, as result we cannot attach a Gtk.DrawingArea() inside of another window
because I dont get never the window.xid
This is the old code for GTK+ 2.x working perfectly:
import pygtk
pygtk.require('2.0')
import gtk
import pygst
pygst.require('0.10')
import gst
import os, sys
class Video:
def __init__(self):
def on_message(bus, message):
if message.type == gst.MESSAGE_EOS:
# End of Stream
player.set_state(gst.STATE_NULL)
elif message.type == gst.MESSAGE_ERROR:
player.set_state(gst.STATE_NULL)
(err, debug) = message.parse_error()
print "Error: %s" % err, debug
def on_sync_message(bus, message):
if message.structure is None:
return False
if message.structure.get_name() == "prepare-xwindow-id":
if sys.platform == "win32":
win_id = videowidget.window.handle
else:
win_id = videowidget.window.xid
assert win_id
gtk.gdk.threads_enter()
gtk.gdk.display_get_default().sync()
imagesink = message.src
imagesink.set_property("force-aspect-ratio", True)
imagesink.set_xwindow_id(win_id)
gtk.gdk.threads_leave()
win = gtk.Window()
win.set_resizable(False)
win.set_has_frame(False)
win.set_position(gtk.WIN_POS_CENTER)
fixed = gtk.Fixed()
win.add(fixed)
fixed.show()
videowidget = gtk.DrawingArea()
fixed.put(videowidget, 0, 0)
videowidget.set_size_request(640, 480)
videowidget.show()
# Setup GStreamer
player = gst.element_factory_make("playbin", "MultimediaPlayer")
bus = player.get_bus()
bus.add_signal_watch()
bus.enable_sync_message_emission()
#used to get messages that GStreamer emits
bus.connect("message", on_message)
#used for connecting video to your application
bus.connect("sync-message::element", on_sync_message)
player.set_property("uri", "file://" + "/SOME/PATH/SOMEFILE.ogv")
player.set_state(gst.STATE_PLAYING)
win.show()
def main():
gtk.gdk.threads_init()
gtk.main()
return 0
if __name__ == "__main__":
Video()
main()
------------------------
And this is the new code for GTK+ 3 not working properly because xid it is
not attached creating another window:
import gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk
from gi.repository import Gst
from gi.repository import Gdk
import os, sys
class Video:
def __init__(self):
win = Gtk.Window()
win.set_resizable(False)
#win.set_has_frame(False) I dont know the name of method on gtk3 so
comment this
#win.set_position(Gtk.WIN_POS_CENTER) same but with the constant
fixed = Gtk.Fixed()
win.add(fixed)
fixed.show()
videowidget = Gtk.DrawingArea()
fixed.put(videowidget, 0, 0)
videowidget.set_size_request(640, 480)
videowidget.show()
# Setup GStreamer
Gst.init_check(None)
self.player = Gst.ElementFactory.make("playbin", "MultimediaPlayer")
self.player.set_state(Gst.State.NULL)
bus = self.player.get_bus()
bus.add_signal_watch()
bus.enable_sync_message_emission()
#used to get messages that GStreamer emits
bus.connect('message::eos', self.on_message_eos)
bus.connect('message::error', self.on_message_error)
#used for connecting video to your application
bus.connect("sync-message::element", self.on_sync_message)
self.player.set_property("uri", "file://" +
"/SOME/PATH/SOMEFILE.ogv")
self.player.set_state(Gst.State.PLAYING)
win.show()
def on_message_eos(self, bus, message):
# End of Stream
self.player.set_state(Gst.State.NULL)
def on_message_error(self, bus, message):
# End of Stream
self.player.set_state(Gst.State.NULL)
print 'Error'
def on_sync_message(self, bus, message):
print "hola"
"""if message.structure is None:
return False
if message.structure.get_name() == "prepare-xwindow-id":
if sys.platform == "win32":
win_id = videowidget.window.handle
else:
win_id = videowidget.window.xid
assert win_id
Gdk.threads_enter()
Gdk.display_get_default().sync()
imagesink = message.src
imagesink.set_property("force-aspect-ratio", True)
imagesink.set_xwindow_id(win_id)
Gdk.threads_leave()"""
def main():
Gdk.threads_init()
Gtk.main()
return 0
if __name__ == "__main__":
Video()
main()
---
So why GTK+ 3 not launch properly the sync-message::element?
Regards
Angel
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