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from Source import Source
from enigma import eTimer, iFrontendInformation
class FrontendStatus(Source):
def __init__(self, service_source = None, frontend_source = None):
Source.__init__(self)
self.service_source = service_source
self.frontend_source = frontend_source
self.invalidate()
self.poll_timer = eTimer()
self.poll_timer.timeout.get().append(self.updateFrontendStatus)
self.poll_timer.start(1000)
def invalidate(self):
self.snr = self.agc = self.ber = self.lock = None
def updateFrontendStatus(self):
print "update frontend status. %d downstream elements" % len(self.downstream_elements)
feinfo = self.getFrontendInfo()
if feinfo is None:
self.invalidate()
else:
(self.snr, self.agc, self.ber, self.lock) = \
[feinfo.getFrontendInfo(x) \
for x in [iFrontendInformation.signalPower,
iFrontendInformation.signalQuality,
iFrontendInformation.bitErrorRate,
iFrontendInformation.lockState] ]
self.changed()
def getFrontendInfo(self):
if self.frontend_source:
return self.frontend_source()
elif self.service_source:
service = self.service_source()
return service and service.frontendInfo()
else:
return None
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