lib/python/Components/Sources/FrontendStatus.py

   1 from Source import Source
   2 from enigma import eTimer
   3
   4 class FrontendStatus(Source):
   5         def __init__(self, service_source = None, frontend_source = None, update_interval = 1000):
   6                 Source.__init__(self)
   7                 self.update_interval = update_interval
   8                 self.service_source = service_source
   9                 self.frontend_source = frontend_source
  10                 self.invalidate()
  11                 self.poll_timer = eTimer()
  12                 self.poll_timer.callback.append(self.updateFrontendStatus)
  13                 self.poll_timer.start(update_interval, True)
  14
  15         def invalidate(self):
  16                 self.snr = self.agc = self.ber = self.lock = self.snr_db = None
  17
  18         def updateFrontendStatus(self):
  19                 status = self.getFrontendStatus()
  20                 if not status:
  21                         self.invalidate()
  22                 else:
  23                         self.snr = status.get("tuner_signal_quality")
  24                         self.snr_db = status.get("tuner_signal_quality_db")
  25                         self.agc = status.get("tuner_signal_power")
  26                         self.ber = status.get("tuner_bit_error_rate")
  27                         self.lock = status.get("tuner_locked")
  28                 self.changed((self.CHANGED_ALL, ))
  29                 self.poll_timer.start(self.update_interval, True)
  30
  31         def getFrontendStatus(self):
  32                 if self.frontend_source:
  33                         frontend = self.frontend_source()
  34                         dict = { }
  35                         if frontend:
  36                                 frontend.getFrontendStatus(dict)
  37                         return dict
  38                 elif self.service_source:
  39                         service = self.service_source()
  40                         feinfo = service and service.frontendInfo()
  41                         return feinfo and feinfo.getFrontendStatus()
  42                 else:
  43                         return None
  44
  45         def doSuspend(self, suspended):
  46                 if suspended:
  47                         self.poll_timer.stop()
  48                 else:
  49                         self.updateFrontendStatus()
  50
  51         def destroy(self):
  52                 self.poll_timer.callback.remove(self.updateFrontendStatus)
  53                 Source.destroy(self)
  54