def on_running(self, _element):
if self.underrun_timeout:
ddebug("running: cancelling underrun timer")
self.underrun_timeout.cancel()
self.underrun_timeout = None
else:
ddebug("running: no outstanding underrun timers; ignoring")
def on_underrun(self, _element):
if self.underrun_timeout:
ddebug("underrun: I already saw a recent underrun; ignoring")
else:
ddebug("underrun: scheduling 'restart_source' in 2s")
self.underrun_timeout = GObjectTimeout(2, self.restart_source)
self.underrun_timeout.start()
def frames(self, timeout_secs=None):
if timeout_secs is not None:
end_time = self._time.time() + timeout_secs
timestamp = None
first = True
while True:
if self._use_old_threading_behaviour:
timestamp = self._last_grabbed_frame_time
ddebug("user thread: Getting sample at %s" % self._time.time())
frame = self._display.get_frame(max(10, timeout_secs),
since=timestamp)
ddebug("user thread: Got sample at %s" % self._time.time())
timestamp = frame.time
if self._use_old_threading_behaviour:
self._last_grabbed_frame_time = timestamp
if not first and timeout_secs is not None and timestamp > end_time:
debug("timed out: %.3f > %.3f" % (timestamp, end_time))
return
yield frame
first = False
def on_running(self, _element):
if self.underrun_timeout:
ddebug("running: cancelling underrun timer")
self.underrun_timeout.cancel()
self.underrun_timeout = None
else:
ddebug("running: no outstanding underrun timers; ignoring")
def on_underrun(self, _element):
if self.underrun_timeout:
ddebug("underrun: I already saw a recent underrun; ignoring")
else:
ddebug("underrun: scheduling 'restart_source' in 2s")
self.underrun_timeout = GObjectTimeout(2, self.restart_source)
self.underrun_timeout.start()
def tell_user_thread(self, frame_or_exception):
# `self.last_frame` is how we communicate from this thread (the GLib
# main loop) to the main application thread running the user's script.
# Note that only this thread writes to self.last_frame.
if isinstance(frame_or_exception, Exception):
ddebug("glib thread: reporting exception to user thread: %s" %
frame_or_exception)
else:
ddebug("glib thread: new sample (time=%s)." %
frame_or_exception.time)
with self._condition:
self.last_frame = frame_or_exception
self._condition.notify_all()
def tell_user_thread(self, frame_or_exception):
# `self.last_frame` is how we communicate from this thread (the GLib
# main loop) to the main application thread running the user's script.
# Note that only this thread writes to self.last_frame.
if isinstance(frame_or_exception, Exception):
ddebug("glib thread: reporting exception to user thread: %s" %
frame_or_exception)
else:
ddebug("glib thread: new sample (time=%s)." %
frame_or_exception.time)
with self._condition:
self.last_frame = frame_or_exception
self._condition.notify_all()
def frames(self, timeout_secs=None):
if timeout_secs is not None:
end_time = self._time.time() + timeout_secs
timestamp = None
first = True
while True:
ddebug("user thread: Getting sample at %s" % self._time.time())
frame = self._display.get_frame(
max(10, timeout_secs), since=timestamp)
ddebug("user thread: Got sample at %s" % self._time.time())
timestamp = frame.time
if not first and timeout_secs is not None and timestamp > end_time:
debug("timed out: %.3f > %.3f" % (timestamp, end_time))
return
yield frame
first = False