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 # ok, for descriptions etc we have:
  16 # service reference  (to get the service name)
  17 # name               (title)
  18 # description        (description)
  19 # event data         (ONLY for time adjustments etc.)
  20
  21
  22 # parses an event, and gives out a (begin, end, name, duration, eit)-tuple.
  23 def parseEvent(ev):
  24         name = ev.getEventName()
  25         description = ev.getShortDescription()
  26         begin = ev.getBeginTime()
  27         end = begin + ev.getDuration()
  28         eit = None
  29         return (begin, end, name, description, eit)
  30
  31 class RecordTimerEntry(timer.TimerEntry):
  32         def __init__(self, serviceref, begin, end, name, description, eit):
  33                 timer.TimerEntry.__init__(self, int(begin), int(end))
  34
  35                 assert isinstance(serviceref, ServiceReference)
  36
  37                 self.service_ref = serviceref
  38
  39                 self.eit = eit
  40
  41                 self.dontSave = False
  42                 self.name = name
  43                 self.description = description
  44                 self.timer = None
  45                 self.record_service = None
  46                 self.wantStart = False
  47                 self.prepareOK = False
  48
  49         def calculateFilename(self):
  50                 service_name = self.service_ref.getServiceName()
  51 #               begin_date = datetime.fromtimestamp(begin).strf...
  52                 begin_date = ""
  53
  54                 print "begin_date: ", begin_date
  55                 print "service_name: ", service_name
  56                 print "name:", self.name
  57                 print "description: ", self.description
  58
  59                 self.Filename = Directories.getRecordingFilename(service_name)
  60                 #begin_date + " - " + service_name + description)
  61
  62
  63         def tryPrepare(self):
  64                 self.calculateFilename()
  65                 self.record_service = NavigationInstance.instance.recordService(self.service_ref)
  66                 if self.record_service == None:
  67                         return False
  68                 else:
  69                         if self.record_service.prepare(self.Filename + ".ts"):
  70                                 self.record_service = None
  71                                 return False
  72
  73                         f = open(self.Filename + ".ts.meta", "w")
  74                         f.write(str(self.service_ref) + "\n")
  75                         f.write(self.name + "\n")
  76                         f.write(self.description + "\n")
  77                         f.write(str(self.begin) + "\n")
  78                         del f
  79                         return True
  80
  81         def activate(self, event):
  82                 if event == self.EventPrepare:
  83                         self.prepareOK = False
  84                         if self.tryPrepare():
  85                                 self.prepareOK = True
  86                         else:
  87                                 # error.
  88                                 Notifications.AddNotificationWithCallback(self.failureCB, MessageBox, _("A timer failed to record!\nDisable TV and try again?\n"))
  89                 elif event == self.EventStart:
  90                         if self.prepareOK:
  91                                 self.record_service.start()
  92                                 print "timer started!"
  93                         else:
  94                                 print "prepare failed, thus start failed, too."
  95                                 self.wantStart = True
  96                 elif event == self.EventEnd or event == self.EventAbort:
  97                         self.wantStart = False
  98                         if self.prepareOK:
  99                                 self.record_service.stop()
 100                                 self.record_service = None
 101                                 print "Timer successfully ended"
 102                         else:
 103                                 print "prepare failed, thus nothing was recorded."
 104
 105         def abort():
 106                 # fixme
 107                 pass
 108
 109         def failureCB(self, answer):
 110                 if answer == True:
 111                         NavigationInstance.instance.stopUserServices()
 112                         self.activate(self.EventPrepare)
 113                         if self.wantStart:
 114                                 print "post-activating record"
 115                                 self.activate(self.EventStart)
 116                 else:
 117                         print "user killed record"
 118
 119 def createTimer(xml):
 120         begin = int(xml.getAttribute("begin"))
 121         end = int(xml.getAttribute("end"))
 122         serviceref = ServiceReference(str(xml.getAttribute("serviceref")))
 123         description = xml.getAttribute("description").encode("utf-8")
 124         repeated = xml.getAttribute("repeated").encode("utf-8")
 125         eit = xml.getAttribute("eit").encode("utf-8")
 126         name = xml.getAttribute("name").encode("utf-8")
 127         #filename = xml.getAttribute("filename").encode("utf-8")
 128         entry = RecordTimerEntry(serviceref, begin, end, name, description, eit)
 129         entry.repeated = int(repeated)
 130         return entry
 131
 132 class RecordTimer(timer.Timer):
 133         def __init__(self):
 134                 timer.Timer.__init__(self)
 135
 136                 self.Filename = Directories.resolveFilename(Directories.SCOPE_CONFIG, "timers.xml")
 137
 138                 try:
 139                         self.loadTimer()
 140                 except IOError:
 141                         print "unable to load timers from file!"
 142
 143         def isRecording(self):
 144                 isRunning = False
 145                 for timer in self.timer_list:
 146                         if timer.isRunning():
 147                                 isRunning = True
 148                 return isRunning
 149
 150         def loadTimer(self):
 151                 # TODO: PATH!
 152                 doc = xml.dom.minidom.parse(self.Filename)
 153
 154                 root = doc.childNodes[0]
 155                 for timer in elementsWithTag(root.childNodes, "timer"):
 156                         self.record(createTimer(timer))
 157
 158         def saveTimer(self):
 159                 doc = xml.dom.minidom.Document()
 160                 root_element = doc.createElement('timers')
 161                 doc.appendChild(root_element)
 162                 root_element.appendChild(doc.createTextNode("\n"))
 163
 164                 for timer in self.timer_list + self.processed_timers:
 165                         # some timers (instant records) don't want to be saved.
 166                         # skip them
 167                         if timer.dontSave:
 168                                 continue
 169                         t = doc.createTextNode("\t")
 170                         root_element.appendChild(t)
 171                         t = doc.createElement('timer')
 172                         t.setAttribute("begin", str(timer.begin))
 173                         t.setAttribute("end", str(timer.end))
 174                         t.setAttribute("serviceref", str(timer.service_ref))
 175                         t.setAttribute("repeated", str(timer.repeated))
 176                         t.setAttribute("name", timer.name)
 177                         t.setAttribute("description", timer.description)
 178                         t.setAttribute("eit", str(timer.eit))
 179
 180                         root_element.appendChild(t)
 181                         t = doc.createTextNode("\n")
 182                         root_element.appendChild(t)
 183
 184                 file = open(self.Filename, "w")
 185                 doc.writexml(file)
 186                 file.write("\n")
 187                 file.close()
 188
 189         def record(self, entry):
 190                 print "[Timer] Record " + str(entry)
 191                 entry.Timer = self
 192                 self.addTimerEntry(entry)
 193
 194         def removeEntry(self, entry):
 195                 print "[Timer] Remove " + str(entry)
 196
 197                 entry.repeated = False
 198
 199                 if entry.state == timer.TimerEntry.StateRunning:
 200                         print "remove running timer."
 201                         entry.end = time.time()
 202                         self.timeChanged(entry)
 203                 elif entry.state != timer.TimerEntry.StateEnded:
 204                         entry.activate(timer.TimerEntry.EventAbort)
 205                         self.timer_list.remove(entry)
 206
 207                         self.calcNextActivation()
 208                         print "timer did not yet start - removing"
 209
 210                         # the timer was aborted, and removed.
 211                         return
 212                 else:
 213                         print "timer did already end - doing nothing."
 214
 215                 print "state: ", entry.state
 216                 print "in processed: ", entry in self.processed_timers
 217                 print "in running: ", entry in self.timer_list
 218                 # now the timer should be in the processed_timers list. remove it from there.
 219                 self.processed_timers.remove(entry)
 220
 221         def shutdown(self):
 222                 self.saveTimer()