RecordTimer.py

   1 import time
   2 import codecs
   3 #from time import datetime
   4 from Tools import Directories, Notifications
   5
   6 import timer
   7 import xml.dom.minidom
   8
   9 from Screens.MessageBox import MessageBox
  10 import NavigationInstance
  11
  12 from Tools.XMLTools import elementsWithTag
  13 from ServiceReference import ServiceReference
  14
  15 class RecordTimerEntry(timer.TimerEntry):
  16         def __init__(self, begin, end, serviceref, epg, description):
  17                 timer.TimerEntry.__init__(self, int(begin), int(end))
  18
  19                 assert isinstance(serviceref, ServiceReference)
  20
  21                 self.service_ref = serviceref
  22
  23                 if epg is not None:
  24                         self.epg_data = ""
  25                         #str(epg.m_event_name)
  26                 else:
  27                         self.epg_data = ""
  28
  29                 self.dontSave = False
  30                 self.description = description
  31                 self.timer = None
  32                 self.record_service = None
  33                 self.wantStart = False
  34
  35         def calculateFilename(self):
  36                 service_name = self.service_ref.getServiceName()
  37 #               begin_date = datetime.fromtimestamp(begin).strf...
  38                 begin_date = ""
  39                 if self.epg_data is not None:
  40                         description = " - " + self.epg_data
  41                 else:
  42                         description = ""
  43
  44                 print "begin_date: " + str(begin_date)
  45                 print "service_name: " + str(service_name)
  46                 print "description: " + str(description)
  47                 self.Filename = Directories.getRecordingFilename(service_name)
  48                 #begin_date + " - " + service_name + description)
  49
  50                 # build filename from epg
  51
  52                 # pff das geht noch nicht...
  53 #               if epg == None:
  54 #                       self.Filename = "recording.ts"
  55 #               else:
  56 #                       self.Filename = "record_" + str(epg.m_event_name) + ".ts"
  57 #
  58 #               print "------------ record filename: %s" % (self.Filename)
  59
  60         def tryPrepare(self):
  61                 self.calculateFilename()
  62                 self.record_service = NavigationInstance.instance.recordService(self.service_ref)
  63                 if self.record_service == None:
  64                         return False
  65                 else:
  66                         if self.record_service.prepare(self.Filename + ".ts"):
  67                                 self.record_service = None
  68                                 return False
  69
  70                         f = open(self.Filename + ".ts.meta", "w")
  71                         f.write(str(self.service_ref) + "\n")
  72                         f.write(self.epg_data + "\n")
  73                         del f
  74                         return True
  75
  76         def activate(self, event):
  77                 if event == self.EventPrepare:
  78                         self.prepareOK = False
  79                         if self.tryPrepare():
  80                                 self.prepareOK = True
  81                         else:
  82                                 # error.
  83                                 Notifications.AddNotificationWithCallback(self.failureCB, MessageBox, _("A timer failed to record!\nDisable TV and try again?\n"))
  84                 elif event == self.EventStart:
  85                         if self.prepareOK:
  86                                 self.record_service.start()
  87                                 print "timer started!"
  88                         else:
  89                                 print "prepare failed, thus start failed, too."
  90                                 self.wantStart = True
  91                 elif event == self.EventEnd or event == self.EventAbort:
  92                         self.wantStart = False
  93                         if self.prepareOK:
  94                                 self.record_service.stop()
  95                                 self.record_service = None
  96                                 print "Timer successfully ended"
  97                         else:
  98                                 print "prepare failed, thus nothing was recorded."
  99
 100         def abort():
 101                 # fixme
 102                 pass
 103
 104         def failureCB(self, answer):
 105                 if answer == True:
 106                         NavigationInstance.instance.stopUserServices()
 107                         self.activate(self.EventPrepare)
 108                         if self.wantStart:
 109                                 print "post-activating record"
 110                                 self.activate(self.EventStart)
 111                 else:
 112                         print "user killed record"
 113
 114 def createTimer(xml):
 115         begin = int(xml.getAttribute("begin"))
 116         end = int(xml.getAttribute("end"))
 117         serviceref = ServiceReference(str(xml.getAttribute("serviceref")))
 118         description = xml.getAttribute("description")
 119         repeated = xml.getAttribute("repeated")
 120         epgdata = xml.getAttribute("epgdata")
 121         #filename = xml.getAttribute("filename")
 122         entry = RecordTimerEntry(begin, end, serviceref, epgdata, description)
 123         entry.repeated = int(repeated)
 124         return entry
 125
 126 class RecordTimer(timer.Timer):
 127         def __init__(self):
 128                 timer.Timer.__init__(self)
 129
 130                 self.Filename = Directories.resolveFilename(Directories.SCOPE_CONFIG, "timers.xml")
 131
 132                 try:
 133                         self.loadTimer()
 134                 except:
 135                         print "unable to load timers from file!"
 136
 137         def isRecording(self):
 138                 isRunning = False
 139                 for timer in self.timer_list:
 140                         if timer.isRunning():
 141                                 isRunning = True
 142                 return isRunning
 143
 144         def loadTimer(self):
 145                 # TODO: PATH!
 146                 doc = xml.dom.minidom.parse(self.Filename)
 147
 148                 root = doc.childNodes[0]
 149                 for timer in elementsWithTag(root.childNodes, "timer"):
 150                         self.record(createTimer(timer))
 151
 152         def saveTimer(self):
 153                 doc = xml.dom.minidom.Document()
 154                 root_element = doc.createElement('timers')
 155                 doc.appendChild(root_element)
 156                 root_element.appendChild(doc.createTextNode("\n"))
 157
 158                 for timer in self.timer_list + self.processed_timers:
 159                         # some timers (instant records) don't want to be saved.
 160                         # skip them
 161                         if timer.dontSave:
 162                                 continue
 163                         t = doc.createTextNode("\t")
 164                         root_element.appendChild(t)
 165                         t = doc.createElement('timer')
 166                         t.setAttribute("begin", str(timer.begin))
 167                         t.setAttribute("end", str(timer.end))
 168                         t.setAttribute("serviceref", str(timer.service_ref))
 169                         t.setAttribute("repeated", str(timer.repeated))
 170                         #t.setAttribute("epgdata", timer.)
 171                         t.setAttribute("description", "no description") # timer.description)
 172                         root_element.appendChild(t)
 173                         t = doc.createTextNode("\n")
 174                         root_element.appendChild(t)
 175
 176                 file = open(self.Filename, "w")
 177                 doc.writexml(codecs.getwriter('UTF-8')(file))
 178                 file.write("\n")
 179                 file.close()
 180
 181         def record(self, entry):
 182                 print "[Timer] Record " + str(entry)
 183                 entry.Timer = self
 184                 self.addTimerEntry(entry)
 185
 186         def removeEntry(self, entry):
 187                 print "[Timer] Remove " + str(entry)
 188
 189                 entry.repeated = False
 190
 191                 entry.repeated = False
 192
 193                 if entry.state == timer.TimerEntry.StateRunning:
 194                         print "remove running timer."
 195                         entry.end = time.time()
 196                         self.timeChanged(entry)
 197                 elif entry.state != timer.TimerEntry.StateEnded:
 198                         entry.activate(timer.TimerEntry.EventAbort)
 199                         self.timer_list.remove(entry)
 200
 201                         self.calcNextActivation()
 202                         print "timer did not yet start - removing"
 203
 204                         # the timer was aborted, and removed.
 205                         return
 206                 else:
 207                         print "timer did already end - doing nothing."
 208
 209                 print "state: ", entry.state
 210                 print "in processed: ", entry in self.processed_timers
 211                 print "in running: ", entry in self.timer_list
 212                 # now the timer should be in the processed_timers list. remove it from there.
 213                 self.processed_timers.remove(entry)
 214
 215         def shutdown(self):
 216                 self.saveTimer()