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 from Screens.SubserviceSelection import SubserviceSelection
  12 import NavigationInstance
  13 from time import localtime
  14
  15 from Tools.XMLTools import elementsWithTag, mergeText, stringToXML
  16 from ServiceReference import ServiceReference
  17
  18 # ok, for descriptions etc we have:
  19 # service reference  (to get the service name)
  20 # name               (title)
  21 # description        (description)
  22 # event data         (ONLY for time adjustments etc.)
  23
  24
  25 # parses an event, and gives out a (begin, end, name, duration, eit)-tuple.
  26 # begin and end will be corrected
  27 def parseEvent(ev):
  28         name = ev.getEventName()
  29         description = ev.getShortDescription()
  30         begin = ev.getBeginTime()
  31         end = begin + ev.getDuration()
  32         eit = ev.getEventId()
  33         begin -= config.recording.margin_before.value[0] * 60
  34         end += config.recording.margin_after.value[0] * 60
  35         return (begin, end, name, description, eit)
  36
  37 # please do not translate log messages
  38 class RecordTimerEntry(timer.TimerEntry):
  39         def __init__(self, serviceref, begin, end, name, description, eit, disabled = False, justplay = False):
  40                 timer.TimerEntry.__init__(self, int(begin), int(end))
  41
  42                 assert isinstance(serviceref, ServiceReference)
  43
  44                 self.service_ref = serviceref
  45                 self.eit = eit
  46                 self.dontSave = False
  47                 self.name = name
  48                 self.description = description
  49                 self.disabled = disabled
  50                 self.timer = None
  51                 self.record_service = None
  52                 self.start_prepare = 0
  53                 self.justplay = justplay
  54
  55                 self.log_entries = []
  56                 self.resetState()
  57
  58         def log(self, code, msg):
  59                 self.log_entries.append((int(time.time()), code, msg))
  60                 print "[TIMER]", msg
  61
  62         def resetState(self):
  63                 self.state = self.StateWaiting
  64                 self.cancelled = False
  65                 self.first_try_prepare = True
  66                 self.timeChanged()
  67
  68         def calculateFilename(self):
  69                 service_name = self.service_ref.getServiceName()
  70                 begin_date = time.strftime("%Y%m%d %H%M", time.localtime(self.begin))
  71
  72                 print "begin_date: ", begin_date
  73                 print "service_name: ", service_name
  74                 print "name:", self.name
  75                 print "description: ", self.description
  76
  77                 filename = begin_date + " - " + service_name
  78                 if self.name:
  79                         filename += " - " + self.name
  80
  81                 self.Filename = Directories.getRecordingFilename(filename)
  82                 self.log(0, "Filename calculated as: '%s'" % self.Filename)
  83                 #begin_date + " - " + service_name + description)
  84
  85         def tryPrepare(self):
  86                 if self.justplay:
  87                         return True
  88                 else:
  89                         self.calculateFilename()
  90                         self.record_service = NavigationInstance.instance.recordService(self.service_ref)
  91                         if self.record_service == None:
  92                                 self.log(1, "'record service' failed")
  93                                 return False
  94                         else:
  95                                 event_id = self.eit
  96                                 if event_id is None:
  97                                         event_id = -1
  98                                 prep_res = self.record_service.prepare(self.Filename + ".ts", self.begin, self.end, event_id )
  99                                 if prep_res:
 100                                         self.log(2, "'prepare' failed: error %d" % prep_res)
 101                                         self.record_service = None
 102                                         return False
 103
 104                                 self.log(3, "prepare ok, writing meta information to %s" % self.Filename)
 105                                 try:
 106                                         f = open(self.Filename + ".ts.meta", "w")
 107                                         f.write(str(self.service_ref) + "\n")
 108                                         f.write(self.name + "\n")
 109                                         f.write(self.description + "\n")
 110                                         f.write(str(self.begin) + "\n")
 111                                         f.close()
 112                                 except:
 113                                         self.log(4, "failed to write meta information")
 114                                 return True
 115
 116         def do_backoff(self):
 117                 if self.backoff == 0:
 118                         self.backoff = 5
 119                 else:
 120                         self.backoff *= 2
 121                         if self.backoff > 100:
 122                                 self.backoff = 100
 123                 self.log(10, "backoff: retry in %d seconds" % self.backoff)
 124
 125         def activate(self):
 126                 next_state = self.state + 1
 127                 self.log(5, "activating state %d" % next_state)
 128
 129                 if next_state == self.StatePrepared:
 130                         if self.tryPrepare():
 131                                 self.log(6, "prepare ok, waiting for begin")
 132                                 # fine. it worked, resources are allocated.
 133                                 self.next_activation = self.begin
 134                                 self.backoff = 0
 135                                 return True
 136
 137                         self.log(7, "prepare failed")
 138                         if self.first_try_prepare:
 139                                 self.first_try_prepare = False
 140                                 if config.recording.asktozap.value == 0:
 141                                         self.log(8, "asking user to zap away")
 142                                         Notifications.AddNotificationWithCallback(self.failureCB, MessageBox, _("A timer failed to record!\nDisable TV and try again?\n"))
 143                                 else: # zap without asking
 144                                         self.log(9, "zap without asking")
 145                                         self.failureCB(True)
 146
 147                         self.do_backoff()
 148                         # retry
 149                         self.start_prepare = time.time() + self.backoff
 150                         return False
 151                 elif next_state == self.StateRunning:
 152                         # if this timer has been cancelled, just go to "end" state.
 153                         if self.cancelled:
 154                                 return True
 155
 156                         if self.justplay:
 157                                 self.log(11, "zapping")
 158                                 NavigationInstance.instance.playService(self.service_ref.ref)
 159                                 return True
 160                         else:
 161                                 self.log(11, "start recording")
 162                                 record_res = self.record_service.start()
 163
 164                                 if record_res:
 165                                         self.log(13, "start record returned %d" % record_res)
 166                                         self.do_backoff()
 167                                         # retry
 168                                         self.begin = time.time() + self.backoff
 169                                         return False
 170
 171                                 return True
 172                 elif next_state == self.StateEnded:
 173                         self.log(12, "stop recording")
 174                         if not self.justplay:
 175                                 self.record_service.stop()
 176                                 self.record_service = None
 177                         return True
 178
 179         def getNextActivation(self):
 180                 if self.state == self.StateEnded:
 181                         return self.end
 182
 183                 next_state = self.state + 1
 184
 185                 return {self.StatePrepared: self.start_prepare,
 186                                 self.StateRunning: self.begin,
 187                                 self.StateEnded: self.end }[next_state]
 188
 189         def failureCB(self, answer):
 190                 if answer == True:
 191                         self.log(13, "ok, zapped away")
 192                         #NavigationInstance.instance.stopUserServices()
 193                         NavigationInstance.instance.playService(self.service_ref.ref)
 194                 else:
 195                         self.log(14, "user didn't want to zap away, record will probably fail")
 196
 197         def timeChanged(self):
 198                 old_prepare = self.start_prepare
 199                 self.start_prepare = self.begin - self.prepare_time
 200                 self.backoff = 0
 201
 202                 if old_prepare != self.start_prepare:
 203                         self.log(15, "record time changed, start prepare is now: %s" % time.ctime(self.start_prepare))
 204
 205 def createTimer(xml):
 206         begin = int(xml.getAttribute("begin"))
 207         end = int(xml.getAttribute("end"))
 208         serviceref = ServiceReference(str(xml.getAttribute("serviceref")))
 209         description = xml.getAttribute("description").encode("utf-8")
 210         repeated = xml.getAttribute("repeated").encode("utf-8")
 211         disabled = long(xml.getAttribute("disabled") or "0")
 212         justplay = long(xml.getAttribute("justplay") or "0")
 213         if xml.hasAttribute("eit") and xml.getAttribute("eit") != "None":
 214                 eit = long(xml.getAttribute("eit"))
 215         else:
 216                 eit = None
 217
 218         name = xml.getAttribute("name").encode("utf-8")
 219         #filename = xml.getAttribute("filename").encode("utf-8")
 220         entry = RecordTimerEntry(serviceref, begin, end, name, description, eit, disabled, justplay)
 221         entry.repeated = int(repeated)
 222
 223         for l in elementsWithTag(xml.childNodes, "log"):
 224                 time = int(l.getAttribute("time"))
 225                 code = int(l.getAttribute("code"))
 226                 msg = mergeText(l.childNodes).strip().encode("utf-8")
 227                 entry.log_entries.append((time, code, msg))
 228
 229         return entry
 230
 231 class RecordTimer(timer.Timer):
 232         def __init__(self):
 233                 timer.Timer.__init__(self)
 234
 235                 self.Filename = Directories.resolveFilename(Directories.SCOPE_CONFIG, "timers.xml")
 236
 237                 try:
 238                         self.loadTimer()
 239                 except IOError:
 240                         print "unable to load timers from file!"
 241
 242         def isRecording(self):
 243                 isRunning = False
 244                 for timer in self.timer_list:
 245                         if timer.isRunning():
 246                                 isRunning = True
 247                 return isRunning
 248
 249         def loadTimer(self):
 250                 # TODO: PATH!
 251                 doc = xml.dom.minidom.parse(self.Filename)
 252
 253                 root = doc.childNodes[0]
 254                 for timer in elementsWithTag(root.childNodes, "timer"):
 255                         self.record(createTimer(timer))
 256
 257         def saveTimer(self):
 258                 #doc = xml.dom.minidom.Document()
 259                 #root_element = doc.createElement('timers')
 260                 #doc.appendChild(root_element)
 261                 #root_element.appendChild(doc.createTextNode("\n"))
 262
 263                 #for timer in self.timer_list + self.processed_timers:
 264                         # some timers (instant records) don't want to be saved.
 265                         # skip them
 266                         #if timer.dontSave:
 267                                 #continue
 268                         #t = doc.createTextNode("\t")
 269                         #root_element.appendChild(t)
 270                         #t = doc.createElement('timer')
 271                         #t.setAttribute("begin", str(int(timer.begin)))
 272                         #t.setAttribute("end", str(int(timer.end)))
 273                         #t.setAttribute("serviceref", str(timer.service_ref))
 274                         #t.setAttribute("repeated", str(timer.repeated))
 275                         #t.setAttribute("name", timer.name)
 276                         #t.setAttribute("description", timer.description)
 277                         #t.setAttribute("eit", str(timer.eit))
 278
 279                         #for time, code, msg in timer.log_entries:
 280                                 #t.appendChild(doc.createTextNode("\t\t"))
 281                                 #l = doc.createElement('log')
 282                                 #l.setAttribute("time", str(time))
 283                                 #l.setAttribute("code", str(code))
 284                                 #l.appendChild(doc.createTextNode(msg))
 285                                 #t.appendChild(l)
 286                                 #t.appendChild(doc.createTextNode("\n"))
 287
 288                         #root_element.appendChild(t)
 289                         #t = doc.createTextNode("\n")
 290                         #root_element.appendChild(t)
 291
 292
 293                 #file = open(self.Filename, "w")
 294                 #doc.writexml(file)
 295                 #file.write("\n")
 296                 #file.close()
 297
 298                 list = []
 299
 300                 list.append('<?xml version="1.0" ?>\n')
 301                 list.append('<timers>\n')
 302
 303                 for timer in self.timer_list + self.processed_timers:
 304                         if timer.dontSave:
 305                                 continue
 306
 307                         list.append('<timer')
 308                         list.append(' begin="' + str(int(timer.begin)) + '"')
 309                         list.append(' end="' + str(int(timer.end)) + '"')
 310                         list.append(' serviceref="' + str(timer.service_ref) + '"')
 311                         list.append(' repeated="' + str(int(timer.repeated)) + '"')
 312                         list.append(' name="' + str(stringToXML(timer.name)) + '"')
 313                         list.append(' description="' + str(stringToXML(timer.description)) + '"')
 314                         if timer.eit is not None:
 315                                 list.append(' eit="' + str(timer.eit) + '"')
 316                         list.append(' disabled="' + str(int(timer.disabled)) + '"')
 317                         list.append(' justplay="' + str(int(timer.justplay)) + '"')
 318                         list.append('>\n')
 319
 320                         #for time, code, msg in timer.log_entries:
 321                                 #list.append('<log')
 322                                 #list.append(' code="' + str(code) + '"')
 323                                 #list.append(' time="' + str(time) + '"')
 324                                 #list.append('>')
 325                                 #list.append(str(msg))
 326                                 #list.append('</log>\n')
 327
 328
 329                         list.append('</timer>\n')
 330
 331                 list.append('</timers>\n')
 332
 333                 file = open(self.Filename, "w")
 334                 for x in list:
 335                         file.write(x)
 336                 file.close()
 337
 338         def record(self, entry):
 339                 entry.timeChanged()
 340                 print "[Timer] Record " + str(entry)
 341                 entry.Timer = self
 342                 self.addTimerEntry(entry)
 343
 344         def isInTimer(self, eventid, begin, duration, service):
 345                 time_match = 0
 346                 for x in self.timer_list:
 347                         if str(x.service_ref) == str(service):
 348                                 #if x.eit is not None and x.repeated == 0:
 349                                 #       if x.eit == eventid:
 350                                 #               return duration
 351                                 if x.repeated != 0:
 352                                         chktime = localtime(begin)
 353                                         time = localtime(x.begin)
 354                                         chktimecmp = chktime.tm_wday * 1440 + chktime.tm_hour * 60 + chktime.tm_min
 355                                         for y in range(7):
 356                                                 if x.repeated & (2 ** y):
 357                                                         timecmp = y * 1440 + time.tm_hour * 60 + time.tm_min
 358                                                         if timecmp <= chktimecmp < (timecmp + ((x.end - x.begin) / 60)):
 359                                                                 time_match = ((timecmp + ((x.end - x.begin) / 60)) - chktimecmp) * 60
 360                                                         elif chktimecmp <= timecmp < (chktimecmp + (duration / 60)):
 361                                                                 time_match = ((chktimecmp + (duration / 60)) - timecmp) * 60
 362                                 else: #if x.eit is None:
 363                                         end = begin + duration
 364                                         if begin <= x.begin <= end:
 365                                                 diff = end - x.begin
 366                                                 if time_match < diff:
 367                                                         time_match = diff
 368                                         elif x.begin <= begin <= x.end:
 369                                                 diff = x.end - begin
 370                                                 if time_match < diff:
 371                                                         time_match = diff
 372                 return time_match
 373
 374         def removeEntry(self, entry):
 375                 print "[Timer] Remove " + str(entry)
 376
 377                 # avoid re-enqueuing
 378                 entry.repeated = False
 379
 380                 # abort timer.
 381                 # this sets the end time to current time, so timer will be stopped.
 382                 entry.abort()
 383
 384                 if entry.state != entry.StateEnded:
 385                         self.timeChanged(entry)
 386
 387                 print "state: ", entry.state
 388                 print "in processed: ", entry in self.processed_timers
 389                 print "in running: ", entry in self.timer_list
 390                 # now the timer should be in the processed_timers list. remove it from there.
 391                 self.processed_timers.remove(entry)
 392
 393         def shutdown(self):
 394                 self.saveTimer()