试试这个，对我有用。
import dbus
import os
from dbus.mainloop.glib import DBusGMainLoop
import gobject
def pulse_bus_address():
if 'PULSE_DBUS_SERVER' in os.environ:
address = os.environ['PULSE_DBUS_SERVER']
else:
bus = dbus.SessionBus()
server_lookup = bus.get_object("org.PulseAudio1", "/org/pulseaudio/server_lookup1")
address = server_lookup.Get("org.PulseAudio.ServerLookup1", "Address", dbus_interface="org.freedesktop.DBus.Properties")
print(address)
return address
def sig_handler(state):
print("State changed to %s" % state)
if state == 0:
print("Pulseaudio running.")
elif state == 1:
print("Pulseaudio idle.")
elif state == 2:
print("Pulseaudio suspended")
# setup the glib mainloop
DBusGMainLoop(set_as_default=True)
loop = gobject.MainLoop()
pulse_bus = dbus.connection.Connection(pulse_bus_address())
pulse_core = pulse_bus.get_object(object_path='/org/pulseaudio/core1')
pulse_core.ListenForSignal('org.PulseAudio.Core1.Device.StateUpdated', dbus.Array(signature='o'), dbus_interface='org.PulseAudio.Core1')
pulse_bus.add_signal_receiver(sig_handler, 'StateUpdated')
loop.run()
要求pulseaudio的default.pa有以下内容：
.ifexists module-dbus-protocol.so
load-module module-dbus-protocol
.endif
编辑：
对于那些想知道@conf-f-use 关于应用程序名称的问题的人。原来他们自己回答了这个问题并在这里发布了答案：https://askubuntu.com/questions/906160/is-there-a-way-to-detect-whether-a-skype-call-is-in-progress-dbus-pulseaudio
窃取@con-f-use 的一段代码并应用到我上面的代码中，我们得到一个监视器，它可以跟踪状态，并能够告诉你应用程序名称、艺术家、标题和正在播放的内容。
干杯@con-f-use :)
import dbus
import os
from dbus.mainloop.glib import DBusGMainLoop
import gobject
def pulse_bus_address():
if 'PULSE_DBUS_SERVER' in os.environ:
address = os.environ['PULSE_DBUS_SERVER']
else:
bus = dbus.SessionBus()
server_lookup = bus.get_object("org.PulseAudio1", "/org/pulseaudio/server_lookup1")
address = server_lookup.Get("org.PulseAudio.ServerLookup1", "Address", dbus_interface="org.freedesktop.DBus.Properties")
print(address)
return address
# convert byte array to string
def dbus2str(db):
if type(db)==dbus.Struct:
return str(tuple(dbus2str(i) for i in db))
if type(db)==dbus.Array:
return "".join([dbus2str(i) for i in db])
if type(db)==dbus.Dictionary:
return dict((dbus2str(k), dbus2str(v)) for k, v in db.items())
if type(db)==dbus.String:
return db+''
if type(db)==dbus.UInt32:
return str(db+0)
if type(db)==dbus.Byte:
return chr(db)
if type(db)==dbus.Boolean:
return db==True
if type(db)==dict:
return dict((dbus2str(k), dbus2str(v)) for k, v in db.items())
return "(%s:%s)" % (type(db), db)
def sig_handler(state):
print("State changed to %s" % state)
if state == 0:
print("Pulseaudio running.")
elif state == 1:
print("Pulseaudio idle.")
elif state == 2:
print("Pulseaudio suspended")
dbus_pstreams = (
dbus.Interface(
pulse_bus.get_object(object_path=path),
dbus_interface='org.freedesktop.DBus.Properties'
) for path in pulse_core.Get(
'org.PulseAudio.Core1',
'PlaybackStreams',
dbus_interface='org.freedesktop.DBus.Properties' )
)
pstreams = {}
for pstream in dbus_pstreams:
try:
pstreams[pstream.Get('org.PulseAudio.Core1.Stream', 'Index')] = pstream
except dbus.exceptions.DBusException:
pass
if pstreams:
for stream in pstreams.keys():
plist = pstreams[stream].Get('org.PulseAudio.Core1.Stream', 'PropertyList')
appname = dbus2str(plist.get('application.name', None))
artist = dbus2str(plist.get('media.artist', None))
title = dbus2str(plist.get('media.title', None))
name = dbus2str(plist.get('media.name', None))
print appname,artist,title,name
# setup the glib mainloop
DBusGMainLoop(set_as_default=True)
loop = gobject.MainLoop()
pulse_bus = dbus.connection.Connection(pulse_bus_address())
pulse_core = pulse_bus.get_object(object_path='/org/pulseaudio/core1')
#pulse_clients = pulse_bus.get_object(object_path='/org/pulseaudio/core1/Clients')
#print dir(pulse_clients)
pulse_core.ListenForSignal('org.PulseAudio.Core1.Device.StateUpdated', dbus.Array(signature='o'), dbus_interface='org.PulseAudio.Core1')
pulse_bus.add_signal_receiver(sig_handler, 'StateUpdated')
loop.run()