lib/python/Components/TunerInfo.py

   1 from GUIComponent import GUIComponent
   2
   3 from enigma import eLabel, eSlider, iFrontendInformation
   4
   5 from math import log
   6
   7 class TunerInfo(GUIComponent):
   8         SNR = 0
   9         AGC = 1
  10         BER = 2
  11         LOCK = 3
  12
  13         SNR_PERCENTAGE = 0
  14         AGC_PERCENTAGE = 1
  15         BER_VALUE = 2
  16         SNR_BAR = 3
  17         AGC_BAR = 4
  18         BER_BAR = 5
  19         LOCK_STATE = 6
  20         SYNC_STATE = 7
  21         def __init__(self, type, servicefkt = None, frontendfkt = None):
  22                 GUIComponent.__init__(self)
  23                 self.instance = None
  24                 self.message = None
  25                 self.value = None
  26
  27                 self.servicefkt = servicefkt
  28                 self.frontendfkt = frontendfkt
  29                 self.type = type
  30                 self.update()
  31
  32         def setText(self, text):
  33                 self.message = text
  34                 if self.instance:
  35                         self.instance.setText(self.message)
  36
  37         def setValue(self, value):
  38                 self.value = value
  39                 if self.instance:
  40                         self.instance.setValue(self.value)
  41
  42         def calc(self,val):
  43                 if not val:
  44                         return 0
  45                 if val < 2500:
  46                         return (long)(log(val)/log(2))
  47                 return val*100/65535
  48
  49         def update(self):
  50                 if self.type == self.SNR_PERCENTAGE or self.type == self.SNR_BAR:
  51                         value = self.getValue(self.SNR) * 100 / 65536
  52                 elif self.type == self.AGC_PERCENTAGE or self.type == self.AGC_BAR:
  53                         value = self.getValue(self.AGC) * 100 / 65536
  54                 elif self.type == self.BER_VALUE or self.type == self.BER_BAR:
  55                         value = self.getValue(self.BER)
  56                 elif self.type == self.LOCK_STATE:
  57                         value = self.getValue(self.LOCK)
  58
  59                 if self.type == self.SNR_PERCENTAGE or self.type == self.AGC_PERCENTAGE:
  60                         self.setText("%d%%" % (value))
  61                 elif self.type == self.BER_VALUE:
  62                         self.setText("%d" % (value))
  63                 elif self.type == self.SNR_BAR or self.type == self.AGC_BAR:
  64                         self.setValue(value)
  65                 elif self.type == self.BER_BAR:
  66                         self.setValue(self.calc(value))
  67                 elif self.type == self.LOCK_STATE:
  68                         if value == 1:
  69                                 self.setText(_("locked"))
  70                         else:
  71                                 self.setText(_("not locked"))
  72
  73         def getValue(self, what):
  74                 if self.servicefkt is not None:
  75                         service = self.servicefkt()
  76                         if service is not None:
  77                                 feinfo = service.frontendInfo()
  78                                 if feinfo is not None:
  79                                         if what == self.SNR:
  80                                                 return feinfo.getFrontendInfo(iFrontendInformation.signalPower)
  81                                         elif what == self.AGC:
  82                                                 return feinfo.getFrontendInfo(iFrontendInformation.signalQuality)
  83                                         elif what == self.BER:
  84                                                 return feinfo.getFrontendInfo(iFrontendInformation.bitErrorRate)
  85                                         elif what == self.LOCK:
  86                                                 return feinfo.getFrontendInfo(iFrontendInformation.lockState)
  87                 elif self.frontendfkt is not None:
  88                         frontend = self.frontendfkt()
  89                         if what == self.SNR:
  90                                 return frontend.readFrontendData(iFrontendInformation.signalPower)
  91                         elif what == self.AGC:
  92                                 return frontend.readFrontendData(iFrontendInformation.signalQuality)
  93                         elif what == self.BER:
  94                                 return frontend.readFrontendData(iFrontendInformation.bitErrorRate)
  95                         elif what == self.LOCK:
  96                                 return frontend.readFrontendData(iFrontendInformation.lockState)
  97
  98                 return 0
  99
 100         def createWidget(self, parent):
 101                 if self.SNR_PERCENTAGE <= self.type <= self.BER_VALUE or self.type == self.LOCK_STATE:
 102                         return eLabel(parent)
 103                 elif self.SNR_BAR <= self.type <= self.BER_BAR:
 104                         self.g = eSlider(parent)
 105                         self.g.setRange(0, 100)
 106                         return self.g
 107
 108         def postWidgetCreate(self, instance):
 109                 if self.message is not None:
 110                         instance.setText(self.message)
 111                 elif self.value is not None:
 112                         instance.setValue(self.value)