RecordTimer.py

   1 import time
   2 import codecs
   3 #from time import datetime
   4 from Tools import Directories, Notifications
   5
   6 from Components.config import config
   7 import timer
   8 import xml.dom.minidom
   9
  10 from Screens.MessageBox import MessageBox
  11 import NavigationInstance
  12
  13 from Tools.XMLTools import elementsWithTag
  14 from ServiceReference import ServiceReference
  15
  16 # ok, for descriptions etc we have:
  17 # service reference  (to get the service name)
  18 # name               (title)
  19 # description        (description)
  20 # event data         (ONLY for time adjustments etc.)
  21
  22
  23 # parses an event, and gives out a (begin, end, name, duration, eit)-tuple.
  24 def parseEvent(ev):
  25         name = ev.getEventName()
  26         description = ev.getShortDescription()
  27         begin = ev.getBeginTime()
  28         end = begin + ev.getDuration()
  29         eit = None
  30         return (begin, end, name, description, eit)
  31
  32 class RecordTimerEntry(timer.TimerEntry):
  33         def __init__(self, serviceref, begin, end, name, description, eit):
  34                 timer.TimerEntry.__init__(self, int(begin), int(end))
  35
  36                 assert isinstance(serviceref, ServiceReference)
  37
  38                 self.service_ref = serviceref
  39
  40                 self.eit = eit
  41
  42                 self.dontSave = False
  43                 self.name = name
  44                 self.description = description
  45                 self.timer = None
  46                 self.record_service = None
  47                 self.wantStart = False
  48                 self.prepareOK = False
  49
  50         def calculateFilename(self):
  51                 service_name = self.service_ref.getServiceName()
  52 #               begin_date = datetime.fromtimestamp(begin).strf...
  53                 begin_date = ""
  54
  55                 print "begin_date: ", begin_date
  56                 print "service_name: ", service_name
  57                 print "name:", self.name
  58                 print "description: ", self.description
  59
  60                 self.Filename = Directories.getRecordingFilename(service_name)
  61                 #begin_date + " - " + service_name + description)
  62
  63
  64         def tryPrepare(self):
  65                 self.calculateFilename()
  66                 self.record_service = NavigationInstance.instance.recordService(self.service_ref)
  67                 if self.record_service == None:
  68                         return False
  69                 else:
  70                         if self.record_service.prepare(self.Filename + ".ts"):
  71                                 self.record_service = None
  72                                 return False
  73
  74                         f = open(self.Filename + ".ts.meta", "w")
  75                         f.write(str(self.service_ref) + "\n")
  76                         f.write(self.name + "\n")
  77                         f.write(self.description + "\n")
  78                         f.write(str(self.begin) + "\n")
  79                         del f
  80                         return True
  81
  82         def activate(self, event):
  83                 if event == self.EventPrepare:
  84                         self.prepareOK = False
  85                         if self.tryPrepare():
  86                                 self.prepareOK = True
  87                         else:
  88                                 # error.
  89                                 if config.recording.asktozap.value == 0:
  90                                         Notifications.AddNotificationWithCallback(self.failureCB, MessageBox, _("A timer failed to record!\nDisable TV and try again?\n"))
  91                                 else: # zap without asking
  92                                         self.failureCB(True)
  93                 elif event == self.EventStart:
  94                         if self.prepareOK:
  95                                 self.record_service.start()
  96                                 print "timer started!"
  97                         else:
  98                                 print "prepare failed, thus start failed, too."
  99                                 self.wantStart = True
 100                 elif event == self.EventEnd or event == self.EventAbort:
 101                         self.wantStart = False
 102                         if self.prepareOK:
 103                                 self.record_service.stop()
 104                                 self.record_service = None
 105
 106                                 print "Timer successfully ended"
 107                         else:
 108                                 print "prepare failed, thus nothing was recorded."
 109
 110         def abort():
 111                 # fixme
 112                 pass
 113
 114         def failureCB(self, answer):
 115                 if answer == True:
 116                         #NavigationInstance.instance.stopUserServices()
 117                         print "[RecordTimer] zapping to", self.service_ref
 118                         NavigationInstance.instance.playService(self.service_ref.ref)
 119                         self.activate(self.EventPrepare)
 120
 121                         if self.wantStart:
 122                                 print "post-activating record"
 123                                 self.activate(self.EventStart)
 124                 else:
 125                         print "user killed record"
 126
 127 def createTimer(xml):
 128         begin = int(xml.getAttribute("begin"))
 129         end = int(xml.getAttribute("end"))
 130         serviceref = ServiceReference(str(xml.getAttribute("serviceref")))
 131         description = xml.getAttribute("description").encode("utf-8")
 132         repeated = xml.getAttribute("repeated").encode("utf-8")
 133         eit = xml.getAttribute("eit").encode("utf-8")
 134         name = xml.getAttribute("name").encode("utf-8")
 135         #filename = xml.getAttribute("filename").encode("utf-8")
 136         entry = RecordTimerEntry(serviceref, begin, end, name, description, eit)
 137         entry.repeated = int(repeated)
 138         return entry
 139
 140 class RecordTimer(timer.Timer):
 141         def __init__(self):
 142                 timer.Timer.__init__(self)
 143
 144                 self.Filename = Directories.resolveFilename(Directories.SCOPE_CONFIG, "timers.xml")
 145
 146                 try:
 147                         self.loadTimer()
 148                 except IOError:
 149                         print "unable to load timers from file!"
 150
 151         def isRecording(self):
 152                 isRunning = False
 153                 for timer in self.timer_list:
 154                         if timer.isRunning():
 155                                 isRunning = True
 156                 return isRunning
 157
 158         def loadTimer(self):
 159                 # TODO: PATH!
 160                 doc = xml.dom.minidom.parse(self.Filename)
 161
 162                 root = doc.childNodes[0]
 163                 for timer in elementsWithTag(root.childNodes, "timer"):
 164                         self.record(createTimer(timer))
 165
 166         def saveTimer(self):
 167                 doc = xml.dom.minidom.Document()
 168                 root_element = doc.createElement('timers')
 169                 doc.appendChild(root_element)
 170                 root_element.appendChild(doc.createTextNode("\n"))
 171
 172                 for timer in self.timer_list + self.processed_timers:
 173                         # some timers (instant records) don't want to be saved.
 174                         # skip them
 175                         if timer.dontSave:
 176                                 continue
 177                         t = doc.createTextNode("\t")
 178                         root_element.appendChild(t)
 179                         t = doc.createElement('timer')
 180                         t.setAttribute("begin", str(timer.begin))
 181                         t.setAttribute("end", str(timer.end))
 182                         t.setAttribute("serviceref", str(timer.service_ref))
 183                         t.setAttribute("repeated", str(timer.repeated))
 184                         t.setAttribute("name", timer.name)
 185                         t.setAttribute("description", timer.description)
 186                         t.setAttribute("eit", str(timer.eit))
 187
 188                         root_element.appendChild(t)
 189                         t = doc.createTextNode("\n")
 190                         root_element.appendChild(t)
 191
 192                 file = open(self.Filename, "w")
 193                 doc.writexml(file)
 194                 file.write("\n")
 195                 file.close()
 196
 197         def record(self, entry):
 198                 print "[Timer] Record " + str(entry)
 199                 entry.Timer = self
 200                 self.addTimerEntry(entry)
 201
 202         def removeEntry(self, entry):
 203                 print "[Timer] Remove " + str(entry)
 204
 205                 entry.repeated = False
 206
 207                 if entry.state == timer.TimerEntry.StateRunning:
 208                         print "remove running timer."
 209                         entry.end = time.time()
 210                         self.timeChanged(entry)
 211                 elif entry.state != timer.TimerEntry.StateEnded:
 212                         entry.activate(timer.TimerEntry.EventAbort)
 213                         self.timer_list.remove(entry)
 214
 215                         self.calcNextActivation()
 216                         print "timer did not yet start - removing"
 217
 218                         # the timer was aborted, and removed.
 219                         return
 220                 else:
 221                         print "timer did already end - doing nothing."
 222
 223                 print "state: ", entry.state
 224                 print "in processed: ", entry in self.processed_timers
 225                 print "in running: ", entry in self.timer_list
 226                 # now the timer should be in the processed_timers list. remove it from there.
 227                 self.processed_timers.remove(entry)
 228
 229         def shutdown(self):
 230                 self.saveTimer()