add FrontendStatus source, add converter to SNR/AGC/BER bar and text

[enigma2.git] / lib / python / Components / Sources / FrontendStatus.py

diff --git a/lib/python/Components/Sources/FrontendStatus.py b/lib/python/Components/Sources/FrontendStatus.py
new file mode 100644 (file)
index 0000000..778b436
--- /dev/null
+++ b/lib/python/Components/Sources/FrontendStatus.py
@@ -0,0 +1,40 @@
+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