lib/python/Components/Converter/ServiceInfo.py

   1 from Components.Converter.Converter import Converter
   2 from enigma import iServiceInformation, iPlayableService
   3 from Components.Element import cached
   4
   5 class ServiceInfo(Converter, object):
   6         HAS_TELETEXT = 0
   7         IS_MULTICHANNEL = 1
   8         IS_CRYPTED = 2
   9         IS_WIDESCREEN = 3
  10         SUBSERVICES_AVAILABLE = 4
  11
  12         def __init__(self, type):
  13                 Converter.__init__(self, type)
  14                 self.type = {
  15                                 "HasTelext": self.HAS_TELETEXT,
  16                                 "IsMultichannel": self.IS_MULTICHANNEL,
  17                                 "IsCrypted": self.IS_CRYPTED,
  18                                 "IsWidescreen": self.IS_WIDESCREEN,
  19                                 "SubservicesAvailable": self.SUBSERVICES_AVAILABLE,
  20                         }[type]
  21
  22                 self.interesting_events = {
  23                                 self.HAS_TELETEXT: [iPlayableService.evUpdatedInfo],
  24                                 self.IS_MULTICHANNEL: [iPlayableService.evUpdatedInfo],
  25                                 self.IS_CRYPTED: [iPlayableService.evUpdatedInfo],
  26                                 self.IS_WIDESCREEN: [iPlayableService.evUpdatedEventInfo],
  27                                 self.SUBSERVICES_AVAILABLE: [iPlayableService.evUpdatedEventInfo]
  28                         }[self.type]
  29
  30         @cached
  31         def getServiceInfoValue(self, info, what):
  32                 v = info.getInfo(what)
  33                 if v != -2:
  34                         return "N/A"
  35                 return info.getInfoString(what)
  36
  37         @cached
  38         def getBoolean(self):
  39                 service = self.source.service
  40                 info = service and service.info()
  41                 if not info:
  42                         return False
  43
  44                 if self.type == self.HAS_TELETEXT:
  45                         tpid = info.getInfo(iServiceInformation.sTXTPID)
  46                         return tpid != -1
  47                 elif self.type == self.IS_MULTICHANNEL:
  48                         # FIXME. but currently iAudioTrackInfo doesn't provide more information.
  49                         audio = service.audioTracks()
  50                         if audio:
  51                                 n = audio.getNumberOfTracks()
  52                                 for x in range(n):
  53                                         i = audio.getTrackInfo(x)
  54                                         description = i.getDescription();
  55                                         if description.find("AC3") != -1 or description.find("DTS") != -1:
  56                                                 return True
  57                         return False
  58                 elif self.type == self.IS_CRYPTED:
  59                         return info.getInfo(iServiceInformation.sIsCrypted) == 1
  60                 elif self.type == self.IS_WIDESCREEN:
  61                         return info.getInfo(iServiceInformation.sAspect) in [3, 4, 7, 8, 0xB, 0xC, 0xF, 0x10]
  62                 elif self.type == self.SUBSERVICES_AVAILABLE:
  63                         subservices = service.subServices()
  64                         return subservices and subservices.getNumberOfSubservices() > 0
  65
  66         boolean = property(getBoolean)
  67
  68         def changed(self, what):
  69                 if what[0] != self.CHANGED_SPECIFIC or what[1] in self.interesting_events:
  70                         Converter.changed(self, what)