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         XRES = 5
  12         YRES = 6
  13
  14         def __init__(self, type):
  15                 Converter.__init__(self, type)
  16                 self.type = {
  17                                 "HasTelext": self.HAS_TELETEXT,
  18                                 "IsMultichannel": self.IS_MULTICHANNEL,
  19                                 "IsCrypted": self.IS_CRYPTED,
  20                                 "IsWidescreen": self.IS_WIDESCREEN,
  21                                 "SubservicesAvailable": self.SUBSERVICES_AVAILABLE,
  22                                 "VideoWidth": self.XRES,
  23                                 "VideoHeight": self.YRES,
  24                         }[type]
  25
  26                 self.interesting_events = {
  27                                 self.HAS_TELETEXT: [iPlayableService.evUpdatedInfo],
  28                                 self.IS_MULTICHANNEL: [iPlayableService.evUpdatedInfo],
  29                                 self.IS_CRYPTED: [iPlayableService.evUpdatedInfo],
  30                                 self.IS_WIDESCREEN: [iPlayableService.evVideoSizeChanged],
  31                                 self.SUBSERVICES_AVAILABLE: [iPlayableService.evUpdatedEventInfo],
  32                                 self.XRES: [iPlayableService.evVideoSizeChanged],
  33                                 self.YRES: [iPlayableService.evVideoSizeChanged],
  34                         }[self.type]
  35
  36         def getServiceInfoString(self, info, what):
  37                 v = info.getInfo(what)
  38                 if v == -1:
  39                         return "N/A"
  40                 if v == -2:
  41                         return info.getInfoString(what)
  42                 return "%d" % v
  43
  44         @cached
  45         def getBoolean(self):
  46                 service = self.source.service
  47                 info = service and service.info()
  48                 if not info:
  49                         return False
  50
  51                 if self.type == self.HAS_TELETEXT:
  52                         tpid = info.getInfo(iServiceInformation.sTXTPID)
  53                         return tpid != -1
  54                 elif self.type == self.IS_MULTICHANNEL:
  55                         # FIXME. but currently iAudioTrackInfo doesn't provide more information.
  56                         audio = service.audioTracks()
  57                         if audio:
  58                                 n = audio.getNumberOfTracks()
  59                                 for x in range(n):
  60                                         i = audio.getTrackInfo(x)
  61                                         description = i.getDescription();
  62                                         if description.find("AC3") != -1 or description.find("DTS") != -1:
  63                                                 return True
  64                         return False
  65                 elif self.type == self.IS_CRYPTED:
  66                         return info.getInfo(iServiceInformation.sIsCrypted) == 1
  67                 elif self.type == self.IS_WIDESCREEN:
  68                         return info.getInfo(iServiceInformation.sAspect) in [3, 4, 7, 8, 0xB, 0xC, 0xF, 0x10]
  69                 elif self.type == self.SUBSERVICES_AVAILABLE:
  70                         subservices = service.subServices()
  71                         return subservices and subservices.getNumberOfSubservices() > 0
  72
  73         boolean = property(getBoolean)
  74
  75         @cached
  76         def getText(self):
  77                 service = self.source.service
  78                 info = service and service.info()
  79                 if not info:
  80                         return ""
  81
  82                 if self.type == self.XRES:
  83                         return self.getServiceInfoString(info, iServiceInformation.sVideoWidth)
  84                 if self.type == self.YRES:
  85                         return self.getServiceInfoString(info, iServiceInformation.sVideoHeight)
  86                 return ""
  87
  88         text = property(getText)
  89
  90         @cached
  91         def getValue(self):
  92                 service = self.source.service
  93                 info = service and service.info()
  94                 if not info:
  95                         return -1
  96
  97                 if self.type == self.XRES:
  98                         return info.getInfo(iServiceInformation.sVideoWidth)
  99                 if self.type == self.YRES:
 100                         return info.getInfo(iServiceInformation.sVideoHeight)
 101
 102                 return -1
 103
 104         value = property(getValue)
 105
 106         def changed(self, what):
 107                 if what[0] != self.CHANGED_SPECIFIC or what[1] in self.interesting_events:
 108                         Converter.changed(self, what)