mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-22 16:26:39 +00:00
65 lines
1.7 KiB
Python
65 lines
1.7 KiB
Python
# -*- coding: utf-8; mode: python; -*-
|
|
#
|
|
# GStreamer Development Utilities
|
|
#
|
|
# Copyright (C) 2007 René Stadler <mail@renestadler.de>
|
|
#
|
|
# 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 3 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, see <http://www.gnu.org/licenses/>.
|
|
|
|
"""GStreamer Development Utilities Common Data module."""
|
|
|
|
import pygtk
|
|
pygtk.require ("2.0")
|
|
|
|
import gobject
|
|
|
|
class Dispatcher (object):
|
|
|
|
def __call__ (self, iterator):
|
|
|
|
raise NotImplementedError ("derived classes must override this method")
|
|
|
|
def cancel (self):
|
|
|
|
pass
|
|
|
|
class DefaultDispatcher (Dispatcher):
|
|
|
|
def __call__ (self, iterator):
|
|
|
|
for x in iterator:
|
|
pass
|
|
|
|
class GSourceDispatcher (Dispatcher):
|
|
|
|
def __init__ (self):
|
|
|
|
Dispatcher.__init__ (self)
|
|
|
|
self.source_id = None
|
|
|
|
def __call__ (self, iterator):
|
|
|
|
if self.source_id is not None:
|
|
gobject.source_remove (self.source_id)
|
|
|
|
self.source_id = gobject.idle_add (iterator.next, priority = gobject.PRIORITY_LOW)
|
|
|
|
def cancel (self):
|
|
|
|
if self.source_id is None:
|
|
return
|
|
|
|
gobject.source_remove (self.source_id)
|
|
self.source_id = None
|