lib/python/Components/Converter/ServiceInfo.py

   1 from Components.Converter.Converter import Converter
   2 from enigma import iServiceInformation, iPlayableService
   3
   4 class ServiceInfo(Converter, object):
   5         HAS_TELETEXT = 0
   6         IS_MULTICHANNEL = 1
   7         IS_CRYPTED = 2
   8         IS_WIDESCREEN = 3
   9         SUBSERVICES_AVAILABLE = 4
  10
  11         def __init__(self, type):
  12                 Converter.__init__(self, type)
  13                 self.type = {
  14                                 "HasTelext": self.HAS_TELETEXT,
  15                                 "IsMultichannel": self.IS_MULTICHANNEL,
  16                                 "IsCrypted": self.IS_CRYPTED,
  17                                 "IsWidescreen": self.IS_WIDESCREEN,
  18                                 "SubservicesAvailable": self.SUBSERVICES_AVAILABLE,
  19                         }[type]
  20
  21                 self.interesting_events = {
  22                                 self.HAS_TELETEXT: [iPlayableService.evUpdatedInfo],
  23                                 self.IS_MULTICHANNEL: [iPlayableService.evUpdatedInfo],
  24                                 self.IS_CRYPTED: [iPlayableService.evUpdatedInfo],
  25                                 self.IS_WIDESCREEN: [iPlayableService.evUpdatedEventInfo],
  26                                 self.SUBSERVICES_AVAILABLE: [iPlayableService.evUpdatedEventInfo]
  27                         }[self.type]
  28
  29         def getServiceInfoValue(self, info, what):
  30                 v = info.getInfo(what)
  31                 if v != -2:
  32                         return "N/A"
  33                 return info.getInfoString(what)
  34
  35         def getBoolean(self):
  36                 if self.cache is None:
  37                         self.cache = self.__getBoolean()
  38                 return self.cache
  39
  40         def __getBoolean(self):
  41                 service = self.source.service
  42                 info = service and service.info()
  43                 if not info:
  44                         return False
  45
  46                 if self.type == self.HAS_TELETEXT:
  47                         tpid = info.getInfo(iServiceInformation.sTXTPID)
  48                         return tpid != -1
  49                 elif self.type == self.IS_MULTICHANNEL:
  50                         # FIXME. but currently iAudioTrackInfo doesn't provide more information.
  51                         audio = service.audioTracks()
  52                         if audio:
  53                                 n = audio.getNumberOfTracks()
  54                                 for x in range(n):
  55                                         i = audio.getTrackInfo(x)
  56                                         description = i.getDescription();
  57                                         if description.find("AC3") != -1 or description.find("DTS") != -1:
  58                                                 return True
  59                         return False
  60                 elif self.type == self.IS_CRYPTED:
  61                         return info.getInfo(iServiceInformation.sIsCrypted) == 1
  62                 elif self.type == self.IS_WIDESCREEN:
  63                         return info.getInfo(iServiceInformation.sAspect) in [3, 4, 7, 8, 0xB, 0xC, 0xF, 0x10]
  64                 elif self.type == self.SUBSERVICES_AVAILABLE:
  65                         subservices = service.subServices()
  66                         return subservices and subservices.getNumberOfSubservices() > 0
  67
  68         boolean = property(getBoolean)
  69
  70         def changed(self, what):
  71                 if what[0] != self.CHANGED_SPECIFIC or what[1] in self.interesting_events:
  72                         Converter.changed(self, what)