[gst-devel] gst_clock_id_wait_async equivalent in Python

[EmbeddedMicro]

I need an equivalent to gst_clock_id_wait_async() for python. I need to
reproduce these lines from
gst-plugins-good/tests/examples/spectrum/demo-audiotest.c

gst_clock_id_wait_async (clock_id, delayed_spectrum_update, (gpointer)
spect);
gst_clock_id_unref (clock_id);

Here is what I have 
import rb
> import gst
> import serial
> 
> class LEDcube(rb.Plugin):
> 
> 	def activate(self, shell):
> 		self.max = -60
> 		self.spectrum = gst.element_factory_make("spectrum")
> 		self.spectrum.set_property('bands',70)
> 		self.spectrum.set_property('interval',10000000)
> 		self.spectrum.set_property('threshold',-50)
> 
> 		player = shell.get_player().props.player
> 		player.add_filter(self.spectrum)
> 
> 		bus = player.props.bus
> 
> 		if bus is None:
> 			self.bus_id = player.connect('notify::bus', self.bus_notify)
> 		else:
> 			self.bus_id = player.props.bus.connect('message', self.on_message)
> 
> 		self.ser = serial.Serial('/dev/ttyS0', 115200, timeout=1)
> 
> 	def deactivate(self, shell):
> 		player = shell.get_player().props.player
> 
> 		player.remove_filter(self.spectrum)
> 		player.props.bus.disconnect(self.bus_id)
> 		self.bus_id = 0
> 
> 	def bus_notify(self, obj, pspec):
> 		obj.disconnect(self.bus_id)
> 		self.bus_id = obj.props.bus.connect('message', self.on_message)
> 
> 	def on_message(self, bus, message):
> 		clock = self.spectrum.get_clock()
> 		if message.src == self.spectrum and
> message.structure.has_key('magnitude') and clock:
> 			magnitudes = message.structure['magnitude']
> 			time = message.structure['running-time'] +
> message.structure['duration']
> 			
> 			clock_id = clock.new_single_shot_id(time +
> self.spectrum.get_base_time())
> 
> 			clock_id.wait_async() #NEED SOMETHING LIKE THIS
> 			clock_id.unref()
> 
> 			self.ser.write("\x35")
> 			for i in range(0, 27):
> 				mag = (50 + int(round(magnitudes[i]))) * 1.4
> 
> 				red = (mag * mag / 25) + 1
> 				green = ((50 - mag) * mag / 25) + 1
> 
> 				if red > 51:
> 					red = 51
> 				if green > 51:
> 					green = 51
> 
> 				self.ser.write(chr(int(round(red))))
> 				self.ser.write(chr(int(round(green))))

Thanks,
Justin
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