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