def _block_intersrc(self, audio_or_video):
'''
The intersrc (into the dest pipeline) is blocked until it's definitely got a source.
'''
def _blocked_probe_callback(*_):
self.logger.debug('_blocked_probe_callback called')
return Gst.PadProbeReturn.OK
# We block the source (output) pad of this intervideosrc/interaudiosrc until we're sure video
# is being sent. Otherwise we can get a partial message, which causes an error.
block_pad(self._get_intersrc_src_pad(audio_or_video))
def create_interaudiosink_and_connections(self):
'''
interaudiosink/interaudiosrc are used to connect the master pipeline
with the local pipeline for this output.
'''
self.interaudiosink = self.source.add_element('interaudiosink', self)
self.audio_element_multiqueue_should_connect_to = self.interaudiosink
channel_name = create_intersink_channel_name()
self.interaudiosrc.set_property('channel', channel_name)
self.interaudiosink.set_property('channel', channel_name)
# We block the source (output) pad of this interaudiosrc until we're sure audio is being sent.
# Otherwise we can get a partial message, which causes an error.
# We don't need to do this if the other one is playing.
if self.source.get_state() not in [Gst.State.PLAYING, Gst.State.PAUSED]:
block_pad(self, 'interaudiosrc_src_pad')
def create_intervideosink_and_connections(self):
'''
intervideosink/intervidesrc are used to connect the master pipeline
with the local pipeline for this output.
'''
self.intervideosink = self.source.add_element('intervideosink', self)
self.video_element_multiqueue_should_connect_to = self.intervideosink
channel_name = create_intersink_channel_name()
self.intervideosrc.set_property('channel', channel_name)
self.intervideosink.set_property('channel', channel_name)
# We block the source (output) pad of this intervideosrc until we're sure video is being sent.
# Otherwise the output pipeline will have a 'not negotiated' error if it starts before the other one.
# We don't need to do this if the other one is playing.
# Note: without this things work *most* of the time.
# 'test_image_input' is an example that fails without it.
if self.source.get_state() not in [Gst.State.PLAYING, Gst.State.PAUSED]:
block_pad(self, 'intervideosrc_src_pad')