def rate(resource, rating): '''give a resource a nao:numericRating (float from 1-10)''' resource = RDF.Node(RDF.Uri(resource)) rating = RDF.Node(literal=str(rating), datatype=ns['xs'].float.uri) # delete any existing ratings for this resource TripleStore.forget(resource, ns['nao'].numericRating, None) TripleStore.state(resource, ns['nao'].numericRating, rating)
def __init__(self, parent=None):
#build parent user interface
QtGui.QWidget.__init__(self, parent)
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
self.text = QtCore.QString()
self.connected = False
self.deviceID = "nokiaN900"
self.m_media = Phonon.MediaObject(self)
audioOutput = Phonon.AudioOutput(Phonon.MusicCategory, self)
Phonon.createPath(self.m_media, audioOutput)
self.song = QtCore.QString("/home/user/scripts/groove.mp3")
self.m_media.setCurrentSource(Phonon.MediaSource(self.song))
self.ui.cueButton.hide()
self.ui.textBrowser.hide()
#connect signals
QtCore.QObject.connect(self.ui.playButton, QtCore.SIGNAL('clicked()'), self.playSong)
QtCore.QObject.connect(self.ui.stopButton, QtCore.SIGNAL('clicked()'), self.stopSong)
QtCore.QObject.connect(self.ui.cueButton, QtCore.SIGNAL('clicked()'), self.forwardSong)
#QtCore.QObject.connect(self.m_media, QtCore.SIGNAL('stateChanged(Phonon::State, Phonon::State)'), self.stateChanged)
QtCore.QObject.connect(self.m_media, QtCore.SIGNAL('finished()'), self.finished)
QtCore.QObject.connect(app, QtCore.SIGNAL('aboutToQuit()'), self.exit_handler)
self.note("Joining smart space..")
self.ts = TripleStore()
self.connected = True
self.addEvent("ConnectEvent")
if self.connected:
#Add subscriptions for play, stop and forward
self.note("Subscribing to PlayEvents..")
self.rs1 = node.CreateSubscribeTransaction(smartSpace)
result_rdf1 = self.rs1.subscribe_rdf([((None, None, ns+"PlayEvent"), 'uri')], RdfMsgHandler())
self.note("Subscribing to StopEvents..")
self.rs2 = node.CreateSubscribeTransaction(smartSpace)
result_rdf2 = self.rs2.subscribe_rdf([((None, None, ns+"StopEvent"), 'uri')], RdfMsgHandler())
self.note("Subscribing to CueEvents..")
self.rs3 = node.CreateSubscribeTransaction(smartSpace)
result_rdf3 = self.rs3.subscribe_rdf([((None, None, ns+"CueEvent"), 'uri')], RdfMsgHandler())
def tag(resource, tags):
'''tag a resource with a space-separated string'''
resource = RDF.Node(RDF.Uri(resource))
# space-separated, remove empty
tags = [x for x in tags.strip().split(' ') if x != '']
# remove all existing tags on this resource
TripleStore.forget(resource, ns['nao'].hasTag, None)
for _tag in tags:
# XXX check if it's a nao:Tag too
tag = TripleStore.model.get_source(ns['nao'].prefLabel, RDF.Node(_tag))
if not tag:
# create a new nao:Tag with the appropriate prefLabel
tag = RDF.Node(blank=None)
TripleStore.state(tag, ns['rdf'].type, ns['nao'].Tag)
TripleStore.state(tag, ns['nao'].prefLabel, RDF.Node(_tag))
TripleStore.state(resource, ns['nao'].hasTag, tag)
class MediaPlayer(QtGui.QMainWindow):
def __init__(self, parent=None):
#build parent user interface
QtGui.QWidget.__init__(self, parent)
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
self.text = QtCore.QString()
self.connected = False
self.deviceID = "nokiaN900"
self.m_media = Phonon.MediaObject(self)
audioOutput = Phonon.AudioOutput(Phonon.MusicCategory, self)
Phonon.createPath(self.m_media, audioOutput)
self.song = QtCore.QString("/home/user/scripts/groove.mp3")
self.m_media.setCurrentSource(Phonon.MediaSource(self.song))
self.ui.cueButton.hide()
self.ui.textBrowser.hide()
#connect signals
QtCore.QObject.connect(self.ui.playButton, QtCore.SIGNAL('clicked()'), self.playSong)
QtCore.QObject.connect(self.ui.stopButton, QtCore.SIGNAL('clicked()'), self.stopSong)
QtCore.QObject.connect(self.ui.cueButton, QtCore.SIGNAL('clicked()'), self.forwardSong)
#QtCore.QObject.connect(self.m_media, QtCore.SIGNAL('stateChanged(Phonon::State, Phonon::State)'), self.stateChanged)
QtCore.QObject.connect(self.m_media, QtCore.SIGNAL('finished()'), self.finished)
QtCore.QObject.connect(app, QtCore.SIGNAL('aboutToQuit()'), self.exit_handler)
self.note("Joining smart space..")
self.ts = TripleStore()
self.connected = True
self.addEvent("ConnectEvent")
if self.connected:
#Add subscriptions for play, stop and forward
self.note("Subscribing to PlayEvents..")
self.rs1 = node.CreateSubscribeTransaction(smartSpace)
result_rdf1 = self.rs1.subscribe_rdf([((None, None, ns+"PlayEvent"), 'uri')], RdfMsgHandler())
self.note("Subscribing to StopEvents..")
self.rs2 = node.CreateSubscribeTransaction(smartSpace)
result_rdf2 = self.rs2.subscribe_rdf([((None, None, ns+"StopEvent"), 'uri')], RdfMsgHandler())
self.note("Subscribing to CueEvents..")
self.rs3 = node.CreateSubscribeTransaction(smartSpace)
result_rdf3 = self.rs3.subscribe_rdf([((None, None, ns+"CueEvent"), 'uri')], RdfMsgHandler())
#def stateChanged(self, newState, oldState):
def finished(self):
"""When the song is finished, we need to send to handle it"""
#if newState == Phonon.StoppedState and oldState != Phonon.StoppedState:
#self.stopSong()
print "Finished.. restarting"
self.m_media.setCurrentSource(Phonon.MediaSource(self.song))
self.m_media.play()
def note(self, newText):
self.text.append(QtCore.QString(newText + "\n"))
self.ui.textBrowser.setPlainText(self.text)
def playSong(self, event=None):
"""Starts song and sends notification"""
self.m_media.play()
self.note("Playing..")
if self.connected:
self.start_time = time.time()
self.addEvent("PlayEvent")
def stopSong(self, event=None):
"""Stops song and sends notification"""
self.m_media.stop()
playing = False
self.note("Stopped..")
if self.connected:
self.start_time = time.time()
self.addEvent("StopEvent")
def forwardSong(self, event=None):
"""Forwards song 5s and sends notification"""
global cueAt
if self.connected and cueAt == 0: #If cueAt is 0, the button was pressed on this device
self.start_time = time.time()
eventID = self.addEvent("CueEvent")
t = RDFTransactionList()
t.add_literal(eventID, ns + "cueAt", '"5000"^^<http://www.w3.org/2001/XMLSchema#integer>')
self.ts.insert(t.get())
self.m_media.seek(5000)
self.note("Forwarding..")
cueAt = 0
def exit_handler(self):
"""On exit, the app sends a notification and leaves smart space"""
print "Unsubscribing RDF subscriptions"
node.CloseSubscribeTransaction(self.rs1)
node.CloseSubscribeTransaction(self.rs2)
node.CloseSubscribeTransaction(self.rs3)
if self.connected:
self.addEvent("DisconnectEvent")
node.leave(smartSpace)
print "Exiting.."
def addEvent(self, eventType):
"""Adds new event with metadata (generatedBy, datetime) to smart space"""
t = RDFTransactionList()
u1 = ns + "event" + str(uuid.uuid4())
t.setType(u1, ns + eventType)
t.add_uri(u1, ns + "generatedBy", ns + self.deviceID)
dt = datetime.now()
xsddt = '"'+dt.strftime('%Y-%m-%dT%H:%M:%S%z') + '"^^<http://www.w3.org/2001/XMLSchema#dateTime>' # e.g. "2011-01-19T16:10:23"^^<http://www.w3.org/2001/XMLSchema#dateTime>
t.add_literal(u1, ns + "inXSDDateTime", xsddt)
self.ts.insert(t.get())
return u1
