bluetooth-audio: avoid LE Settings Addon crash

packages/addons/service/bluetooth-audio/source/bin/dbusservice.py

@@ -0,0 +1,110 @@
+#!/usr/bin/python2
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2016-present Team LibreELEC (https://libreelec.tv)
+
+from __future__ import print_function
+import sys
+import dbus
+import dbus.mainloop.glib
+import gobject
+import time
+
+gobject.threads_init()
+
+class BluetoothAudioClient(object):
+
+  def __init__(self):
+
+    self.devices = {}
+    self.signal_added = None
+    self.signal_removed = None
+
+    self._setup_loop()
+    self._setup_bus()
+    self._setup_signals()
+
+  def quit(self):
+
+    self.signal_added.remove()
+    self.signal_removed.remove()
+
+    self._loop.quit()
+
+  def _setup_loop(self):
+
+    self._loop = gobject.MainLoop()
+
+  def run(self):
+    self._loop.run()
+
+  def _setup_bus(self):
+
+    dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
+    self._bus = dbus.SystemBus()
+
+  def _setup_signals(self):
+
+    self.signal_added = self._bus.add_signal_receiver(handler_function=self.switch_audio,
+                                                      signal_name='InterfacesAdded',
+                                                      dbus_interface='org.freedesktop.DBus.ObjectManager',
+                                                      bus_name='org.bluez',
+                                                      member_keyword='signal')
+
+    self.signal_removed = self._bus.add_signal_receiver(handler_function=self.switch_audio,
+                                                        signal_name='InterfacesRemoved',
+                                                        dbus_interface='org.freedesktop.DBus.ObjectManager',
+                                                        bus_name='org.bluez',
+                                                        member_keyword='signal')
+
+  def switch_audio(self, *args, **kwargs):
+
+    device_path = args[0]
+
+    try:
+      if kwargs['signal'] == 'InterfacesAdded':
+
+        self.devices[device_path] = {
+                                      'Connected': '',
+                                      'Device': '',
+                                      'Class': '',
+                                    }
+
+        device = self._bus.get_object('org.bluez', device_path)
+        device_iface = dbus.Interface(device, dbus.PROPERTIES_IFACE)
+        self.devices[device_path]['Device'] = device_iface.Get('org.bluez.MediaTransport1', 'Device')
+
+        audio_device_path = self._bus.get_object('org.bluez', self.devices[device_path]['Device'])
+        audio_device_iface = dbus.Interface(audio_device_path, dbus.PROPERTIES_IFACE)
+        self.devices[device_path]['Class'] = audio_device_iface.Get('org.bluez.Device1', 'Class')
+        self.devices[device_path]['Connected'] = audio_device_iface.Get('org.bluez.Device1', 'Connected')
+
+        if self.devices[device_path]['Class'] & (1 << 21):
+          print('bluetooth')
+          sys.stdout.flush()
+
+      elif kwargs['signal'] == 'InterfacesRemoved':
+        if self.devices[device_path]['Device'] is not None and self.devices[device_path]['Class'] & (1 << 21):
+          audio_device_path = self._bus.get_object('org.bluez', self.devices[device_path]['Device'])
+          audio_device_iface = dbus.Interface(audio_device_path, dbus.PROPERTIES_IFACE)
+          self.devices[device_path]['Connected'] = audio_device_iface.Get('org.bluez.Device1', 'Connected')
+
+          while self.devices[device_path]['Connected']:
+            self.devices[device_path]['Connected'] = audio_device_iface.Get('org.bluez.Device1', 'Connected')
+            time.sleep(0.1)
+
+          for path in self.devices:
+            if self.devices[path]['Connected'] and self.devices[path]['Class'] & (1 << 21):
+              return
+
+          print('default')
+          sys.stdout.flush()
+
+    except (TypeError, KeyError, dbus.exceptions.DBusException) as e:
+      print('%s: ' % unicode(e), file=sys.stderr)
+
+
+client = BluetoothAudioClient()
+
+client.run()
+
+del BluetoothAudioClient