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