lib/python/Plugins/Extensions/DVDBurn/DVDToolbox.py

   1 from Screens.Screen import Screen
   2 from Screens.MessageBox import MessageBox
   3 from Screens.HelpMenu import HelpableScreen
   4 from Components.ActionMap import HelpableActionMap, ActionMap
   5 from Components.Sources.List import List
   6 from Components.Sources.StaticText import StaticText
   7 from Components.Sources.Progress import Progress
   8 from Components.Task import Task, Job, job_manager, Condition
   9 from Components.ScrollLabel import ScrollLabel
  10 from Components.Harddisk import harddiskmanager
  11 from Components.Console import Console
  12 from Plugins.SystemPlugins.Hotplug.plugin import hotplugNotifier
  13
  14 class DVDToolbox(Screen):
  15         skin = """
  16                 <screen name="DVDToolbox" position="center,center"  size="560,445" title="DVD media toolbox" >
  17                     <ePixmap pixmap="skin_default/buttons/red.png" position="0,0" size="140,40" alphatest="on" />
  18                     <ePixmap pixmap="skin_default/buttons/green.png" position="140,0" size="140,40" alphatest="on" />
  19                     <ePixmap pixmap="skin_default/buttons/yellow.png" position="280,0" size="140,40" alphatest="on" />
  20                     <widget source="key_red" render="Label" position="0,0" zPosition="1" size="140,40" font="Regular;20" halign="center" valign="center" backgroundColor="#9f1313" transparent="1" />
  21                     <widget source="key_green" render="Label" position="140,0" zPosition="1" size="140,40" font="Regular;20" halign="center" valign="center" backgroundColor="#1f771f" transparent="1" />
  22                     <widget source="key_yellow" render="Label" position="280,0" zPosition="1" size="140,40" font="Regular;20" halign="center" valign="center" backgroundColor="#a08500" transparent="1" />
  23                     <widget source="info" render="Label" position="20,60" size="520,100" font="Regular;20" />
  24                     <widget name="details" position="20,200" size="520,200" font="Regular;16" />
  25                     <widget source="space_bar" render="Progress" position="10,410" size="540,26" borderWidth="1" backgroundColor="#254f7497" />
  26                     <widget source="space_label" render="Label" position="20,414" size="520,22" zPosition="2" font="Regular;18" halign="center" transparent="1" foregroundColor="#000000" />
  27                 </screen>"""
  28
  29         def __init__(self, session):
  30                 Screen.__init__(self, session)
  31
  32                 self["key_red"] = StaticText(_("Exit"))
  33                 self["key_green"] = StaticText(_("Update"))
  34                 self["key_yellow"] = StaticText()
  35
  36                 self["space_label"] = StaticText()
  37                 self["space_bar"] = Progress()
  38
  39                 self.mediuminfo = [ ]
  40                 self.formattable = False
  41                 self["details"] = ScrollLabel()
  42                 self["info"] = StaticText()
  43
  44                 self["toolboxactions"] = ActionMap(["ColorActions", "DVDToolbox", "OkCancelActions"],
  45                 {
  46                     "red": self.exit,
  47                     "green": self.update,
  48                     "yellow": self.format,
  49                     "cancel": self.exit,
  50                     "pageUp": self.pageUp,
  51                     "pageDown": self.pageDown
  52                 })
  53                 self.update()
  54                 hotplugNotifier.append(self.update)
  55                 self.onLayoutFinish.append(self.layoutFinished)
  56
  57         def layoutFinished(self):
  58                 self.setTitle(_("DVD media toolbox"))
  59
  60         def pageUp(self):
  61                 self["details"].pageUp()
  62
  63         def pageDown(self):
  64                 self["details"].pageDown()
  65
  66         def update(self, dev="", action=""):
  67                 self["space_label"].text = _("Please wait... Loading list...")
  68                 self["info"].text = ""
  69                 self["details"].setText("")
  70                 self.Console = Console()
  71                 cmd = "/bin/dvd+rw-mediainfo /dev/" + harddiskmanager.getCD()
  72                 self.Console.ePopen(cmd, self.mediainfoCB)
  73
  74         def format(self):
  75                 if self.formattable:
  76                         job = DVDformatJob(self)
  77                         job_manager.AddJob(job)
  78                         from Screens.TaskView import JobView
  79                         self.session.openWithCallback(self.formatCB, JobView, job)
  80
  81         def formatCB(self, in_background):
  82                 self.update()
  83
  84         def mediainfoCB(self, mediuminfo, retval, extra_args):
  85                 formatted_capacity = 0
  86                 read_capacity = 0
  87                 capacity = 0
  88                 used = 0
  89                 infotext = ""
  90                 mediatype = ""
  91                 for line in mediuminfo.splitlines():
  92                         if line.find("Mounted Media:") > -1:
  93                                 mediatype = line.rsplit(',',1)[1][1:]
  94                                 if mediatype.find("RW") > 0 or mediatype.find("RAM") > 0:
  95                                         self.formattable = True
  96                                 else:
  97                                         self.formattable = False
  98                         elif line.find("Legacy lead-out at:") > -1:
  99                                 used = int(line.rsplit('=',1)[1]) / 1048576.0
 100                                 print "[dvd+rw-mediainfo] lead out used =", used
 101                         elif line.find("formatted:") > -1:
 102                                 formatted_capacity = int(line.rsplit('=',1)[1]) / 1048576.0
 103                                 print "[dvd+rw-mediainfo] formatted capacity =", formatted_capacity
 104                         elif formatted_capacity == 0 and line.find("READ CAPACITY:") > -1:
 105                                 read_capacity = int(line.rsplit('=',1)[1]) / 1048576.0
 106                                 print "[dvd+rw-mediainfo] READ CAPACITY =", read_capacity
 107                 for line in mediuminfo.splitlines():
 108                         if line.find("Free Blocks:") > -1:
 109                                 try:
 110                                         size = eval(line[14:].replace("KB","*1024"))
 111                                 except:
 112                                         size = 0
 113                                 if size > 0:
 114                                         capacity = size / 1048576
 115                                         if used:
 116                                                 used = capacity-used
 117                                         print "[dvd+rw-mediainfo] free blocks capacity=%d, used=%d" % (capacity, used)
 118                         elif line.find("Disc status:") > -1:
 119                                 if line.find("blank") > -1:
 120                                         print "[dvd+rw-mediainfo] Disc status blank capacity=%d, used=0" % (capacity)
 121                                         capacity = used
 122                                         used = 0
 123                                 elif line.find("complete") > -1 and formatted_capacity == 0:
 124                                         print "[dvd+rw-mediainfo] Disc status complete capacity=0, used=%d" % (capacity)
 125                                         used = read_capacity
 126                                         capacity = 1
 127                                 else:
 128                                         capacity = formatted_capacity
 129                         infotext += line+'\n'
 130                 if capacity and used > capacity:
 131                         used = read_capacity or capacity
 132                         capacity = formatted_capacity or capacity
 133                 self["details"].setText(infotext)
 134                 if self.formattable:
 135                         self["key_yellow"].text = _("Format")
 136                 else:
 137                         self["key_yellow"].text = ""
 138                 percent = 100 * used / (capacity or 1)
 139                 if capacity > 4600:
 140                         self["space_label"].text = "%d / %d MB" % (used, capacity) + " (%.2f%% " % percent + _("of a DUAL layer medium used.") + ")"
 141                         self["space_bar"].value = int(percent)
 142                 elif capacity > 1:
 143                         self["space_label"].text = "%d / %d MB" % (used, capacity) + " (%.2f%% " % percent + _("of a SINGLE layer medium used.") + ")"
 144                         self["space_bar"].value = int(percent)
 145                 elif capacity == 1 and used > 0:
 146                         self["space_label"].text = "%d MB " % (used) + _("on READ ONLY medium.")
 147                         self["space_bar"].value = int(percent)
 148                 else:
 149                         self["space_label"].text = _("Medium is not a writeable DVD!")
 150                         self["space_bar"].value = 0
 151                 free = capacity-used
 152                 if free < 2:
 153                         free = 0
 154                 self["info"].text = "Media-Type:\t\t%s\nFree capacity:\t\t%d MB" % (mediatype or "NO DVD", free)
 155
 156         def exit(self):
 157                 del self.Console
 158                 hotplugNotifier.remove(self.update)
 159                 self.close()
 160
 161 class DVDformatJob(Job):
 162         def __init__(self, toolbox):
 163                 Job.__init__(self, _("DVD media toolbox"))
 164                 self.toolbox = toolbox
 165                 DVDformatTask(self)
 166
 167         def retry(self):
 168                 self.tasks[0].args += self.tasks[0].retryargs
 169                 Job.retry(self)
 170
 171 class DVDformatTaskPostcondition(Condition):
 172         RECOVERABLE = True
 173         def check(self, task):
 174                 return task.error is None
 175
 176         def getErrorMessage(self, task):
 177                 return {
 178                         task.ERROR_ALREADYFORMATTED: _("This DVD RW medium is already formatted - reformatting will erase all content on the disc."),
 179                         task.ERROR_NOTWRITEABLE: _("Medium is not a writeable DVD!"),
 180                         task.ERROR_UNKNOWN: _("An unknown error occured!")
 181                 }[task.error]
 182
 183 class DVDformatTask(Task):
 184         ERROR_ALREADYFORMATTED, ERROR_NOTWRITEABLE, ERROR_UNKNOWN = range(3)
 185         def __init__(self, job, extra_args=[]):
 186                 Task.__init__(self, job, ("RW medium format"))
 187                 self.toolbox = job.toolbox
 188                 self.postconditions.append(DVDformatTaskPostcondition())
 189                 self.setTool("/bin/dvd+rw-format")
 190                 self.args += [ "/dev/" + harddiskmanager.getCD() ]
 191                 self.end = 1100
 192                 self.retryargs = [ ]
 193
 194         def prepare(self):
 195                 self.error = None
 196
 197         def processOutputLine(self, line):
 198                 if line.startswith("- media is already formatted"):
 199                         self.error = self.ERROR_ALREADYFORMATTED
 200                         self.retryargs = [ "-force" ]
 201                 if line.startswith("- media is not blank") or line.startswith("  -format=full  to perform full (lengthy) reformat;"):
 202                         self.error = self.ERROR_ALREADYFORMATTED
 203                         self.retryargs = [ "-blank" ]
 204                 if line.startswith(":-( mounted media doesn't appear to be"):
 205                         self.error = self.ERROR_NOTWRITEABLE
 206
 207         def processOutput(self, data):
 208                 print "[DVDformatTask processOutput]  ", data
 209                 if data.endswith('%'):
 210                         data= data.replace('\x08','')
 211                         self.progress = int(float(data[:-1])*10)
 212                 else:
 213                         Task.processOutput(self, data)