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def GetRecordingSampleRate(device):	element = gst.element_factory_make("alsasrc", "alsasrc")	# must set proper device to get precise caps	element.set_property("device", "hw:0")	# open device (so caps are probed)	element.set_state(gst.STATE_READY)	pad = element.get_pad("src")	caps = pad.get_caps()	del pad	val = None	try:		val = caps[0]["rate"]	except KeyError:		pass			# clean up	element.set_state(gst.STATE_NULL)	del element		return val