tkinter - Gstreamer python get bus message reconnection -


i have tkinter application gstreamer pipelines display different streams , i'd detect when 1 of pipelines loses connection. tried bus messages seems me doesn't post message @ all. created widget manage gstreamer logic , code widget following.

from tkinter.ttk import widget  import gi  # needed set_window_handle(): gi.require_version('gstvideo', '1.0') gi.require_version('gst', '1.0') gi.repository import gst, gstvideo   class gstwidget(widget):     def __init__(self, gst_launch_string, x, y, width, height, master=none, **kw):         super(gstwidget, self).__init__(master, 'frame', **kw)          self.place(x=x, y=y, width=width, height=height)          self.frame_id = self.winfo_id()          self.player = gst.parse_launch(gst_launch_string)         self.player.set_state(gst.state.playing)          self.bus = self.player.get_bus()         self.bus.add_signal_watch()         self.bus.connect('message::error', self.on_error)         self.bus.connect('message::state-changed', self.on_status_changed)         self.bus.connect('message::eos', self.on_eos)         self.bus.connect('message::info', self.on_info)         self.bus.enable_sync_message_emission()         self.bus.connect('sync-message::element', self.set_frame_handle)      def on_status_changed(self, bus, message):         print('status_changed message -> {}'.format(message))      def on_eos(self, bus, message):         print('eos message -> {}'.format(message))      def on_info(self, bus, message):         print('info message -> {}'.format(message))      def on_error(self, bus, message):         print('error message -> {}'.format(message.parse_error()))      def play(self):         print('current state of pipeline {}'.format(self.player.current_state))         print('setting pipeline state playing')         self.player.set_state(gst.state.playing)      def close(self):         self.player.set_state(gst.state.null)      def is_playing(self):         print('\t\t{}'.format(self.player.current_state))         return self.player.current_state not gst.state.playing      def set_frame_handle(self, bus, message):         if message.get_structure().get_name() == 'prepare-window-handle':             frame = message.src             frame.set_property('force-aspect-ratio', true)             frame.set_window_handle(self.frame_id)

can point me i'm wrong? i've put breakpoints events , it's not printing events i'd watch. , can point me if there's way retry connect pipeline on lost connection?

i figured out. "problem" tkinter mainloop. since gstreamer depends heavily on glib , tkinter doesn't use glib mainloop had create 1 suggested @jldupont @ tkinter integration glib mainloop


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