def get_dbus_method(method_name):
dbus_loop = DBusGMainLoop()
connection = BusConnection(mainloop=dbus_loop)
bus_name = "org.gnome.SessionManager"
object_path = "/org/gnome/SessionManager"
session_object = connection.get_object(bus_name, object_path)
interface = dbus.Interface(session_object, bus_name)
method = interface.get_dbus_method(method_name)
return method
def get_dbus_method(method_name):
dbus_loop = DBusGMainLoop()
connection = BusConnection(mainloop=dbus_loop)
bus_name = "com.canonical.Unity"
object_path = "/com/canonical/Unity/Session"
session_object = connection.get_object(bus_name, object_path)
interface = dbus.Interface(session_object, bus_name + ".Session")
method = interface.get_dbus_method(method_name)
return method
def get_dbus_method(method_name):
dbus_loop = DBusGMainLoop()
connection = BusConnection(mainloop=dbus_loop)
bus_name = "org.gnome.SessionManager"
object_path = "/org/gnome/SessionManager"
session_object = connection.get_object(bus_name, object_path)
interface = dbus.Interface(session_object, bus_name)
method = interface.get_dbus_method(method_name)
return method
def main():
size = Size(800, 600)
mainloop = GLib.MainLoop()
DBusGMainLoop(set_as_default=True)
sleep(10)
bus = BusConnection(getenv("DBUS_ADDRESS") or DBUS_ADDRESS)
remote_object = bus.get_object(BUS_NAME, OBJECT_PATH)
process = Popen(ffplay_command(size), stdin=PIPE)
remote_object.connect_to_signal("FrameEmitted", partial(handle_frame, process.stdin), dbus_interface=DBUS_INTERFACE)
remote_object.EmitFrames()
#print(remote_object.Capitalize("hello world"))
print("Starting player... ", flush=True)
mainloop.run()
def get_bus(address_or_type=BusConnection.TYPE_SESSION):
""" Returns a given bus, either from the local system or from a remote one, thanks to D-Bus TCP support.
The parameter is used the same way as in D-Bus class :py:class:`BusConnection`. Refer to original
documentation for details.
:param address_or_type: request bus identification
:return: the requested bus
:rtype: BusConnection
"""
os.environ.update(get_bus_config())
return BusConnection(address_or_type)
def get_remote_bus(host, port):
""" Returns a bus exposed by a remote host.
This is a convenience wrapper of the :py:class:`BusConnection` create, building the bus address
for a TCP connection.
:param str host: host name or IP
:param int port: port on which the remote host is listening
:return: the requested bus
:rtype: BusConnection
"""
return BusConnection("tcp:host=%s,port=%d" % (host, port))
def __new__(cls,
bus_type=BusConnection.TYPE_SESSION,
private=False,
mainloop=None):
"""Constructor, returning an existing instance where appropriate.
The returned instance is actually always an instance of `SessionBus`,
`SystemBus` or `StarterBus`.
:Parameters:
`bus_type` : cls.TYPE_SESSION, cls.TYPE_SYSTEM or cls.TYPE_STARTER
Connect to the appropriate bus
`private` : bool
If true, never return an existing shared instance, but instead
return a private connection.
:Deprecated: since 0.82.3. Use dbus.bus.BusConnection for
private connections.
`mainloop` : dbus.mainloop.NativeMainLoop
The main loop to use. The default is to use the default
main loop if one has been set up, or raise an exception
if none has been.
:Changed: in dbus-python 0.80:
converted from a wrapper around a Connection to a Connection
subclass.
"""
if (not private and bus_type in cls._shared_instances):
return cls._shared_instances[bus_type]
# this is a bit odd, but we create instances of the subtypes
# so we can return the shared instances if someone tries to
# construct one of them (otherwise we'd eg try and return an
# instance of Bus from __new__ in SessionBus). why are there
# three ways to construct this class? we just don't know.
if bus_type == BUS_SESSION:
subclass = SessionBus
elif bus_type == BUS_SYSTEM:
subclass = SystemBus
elif bus_type == BUS_STARTER:
subclass = StarterBus
else:
raise ValueError('invalid bus_type %s' % bus_type)
bus = BusConnection.__new__(subclass, bus_type, mainloop=mainloop)
bus._bus_type = bus_type
if not private:
cls._shared_instances[bus_type] = bus
return bus
def __new__(cls, bus_type=BusConnection.TYPE_SESSION, private=False,
mainloop=None):
"""Constructor, returning an existing instance where appropriate.
The returned instance is actually always an instance of `SessionBus`,
`SystemBus` or `StarterBus`.
:Parameters:
`bus_type` : cls.TYPE_SESSION, cls.TYPE_SYSTEM or cls.TYPE_STARTER
Connect to the appropriate bus
`private` : bool
If true, never return an existing shared instance, but instead
return a private connection
`mainloop` : dbus.mainloop.NativeMainLoop
The main loop to use. The default is to use the default
main loop if one has been set up, or raise an exception
if none has been.
:ToDo:
- There is currently no way to connect this class to a custom
address.
- Some of this functionality should be available on
peer-to-peer D-Bus connections too.
:Changed: in dbus-python 0.80:
converted from a wrapper around a Connection to a Connection
subclass.
"""
if (not private and bus_type in cls._shared_instances):
return cls._shared_instances[bus_type]
# this is a bit odd, but we create instances of the subtypes
# so we can return the shared instances if someone tries to
# construct one of them (otherwise we'd eg try and return an
# instance of Bus from __new__ in SessionBus). why are there
# three ways to construct this class? we just don't know.
if bus_type == BUS_SESSION:
subclass = SessionBus
elif bus_type == BUS_SYSTEM:
subclass = SystemBus
elif bus_type == BUS_STARTER:
subclass = StarterBus
else:
raise ValueError('invalid bus_type %s' % bus_type)
bus = BusConnection.__new__(subclass, bus_type, mainloop=mainloop)
bus._bus_type = bus_type
if not private:
cls._shared_instances[bus_type] = bus
return bus
def main():
file_path = Path("./ocean3.mp4")
size = Size(800, 600)
print("Starting streamer... ", flush=True)
mainloop = GLib.MainLoop()
DBusGMainLoop(set_as_default=True)
bus = BusConnection(getenv("DBUS_ADDRESS") or DBUS_ADDRESS)
bus_name = BusName(BUS_NAME, bus)
StreamerObject(bus, bus_name, file_path, size)
mainloop.run()
def __init__(self, bus_address):
"""
Register the org.freedesktop.Notifications service and an object implementing the corresponding interface
on the given bus. Make sure that the org.freedesktop.Notifications service doesn't exist on the bus yet.
:param bus_address:
Address of the desired bus. D-BUS addresses are of the form 'unix:*=*'
"""
# maximum notification ID is the biggest number that can be represented by 32 bits (uint32)
self.__max_id = 4294967295
# start notification IDs at 1 since 0 is not allowed
self.__id_count = 1
# get bus name of service on the defined bus connection and create service object
self.__bus_name = dbus.service.BusName(self.service,
bus=BusConnection(bus_address))
self.__service_object = dbus.service.Object.__init__(
self, self.__bus_name, self.object_path)
def __new__(cls, mainLoop=None):
bus = BusConnection.__new__(cls,
mbusConfig.DBUS_ADDRESS,
mainloop=mainLoop)
return bus
