Grabbing the notification mock

7 files changed, 1096 insertions, 984 deletions

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index b6f006a..479d01a 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -43,6 +43,7 @@ vala_add(indicator-sound-service
   DEPENDS
     sound-menu
     volume-control
+    volume-control-pulse
     media-player
     media-player-list
     mpris2-interfaces
@@ -52,6 +53,11 @@ vala_add(indicator-sound-service
   volume-control.vala
 )
 vala_add(indicator-sound-service
+  volume-control-pulse.vala
+  DEPENDS
+    volume-control
+)
+vala_add(indicator-sound-service
   media-player.vala
 )
 vala_add(indicator-sound-service
diff --git a/src/main.c b/src/main.c
index e9a148e..ad8b3d4 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,6 +1,18 @@
-/* main.c generated by valac 0.22.1, the Vala compiler
- * generated from main.vala, do not modify */
-
+/*
+ * Copyright © 2015 Canonical Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 
 #include <glib.h>
 #include <locale.h>
@@ -9,33 +21,77 @@
 #include "indicator-sound-service.h"
 #include "config.h"
 
+static gboolean
+sigterm_handler (gpointer data)
+{
+	g_debug("Got SIGTERM");
+	g_main_loop_quit((GMainLoop *)data);
+	return G_SOURCE_REMOVE;
+}
+
+static void
+name_lost (GDBusConnection * connection, const gchar * name, gpointer user_data)
+{
+	g_debug("Name lost");
+	g_main_loop_quit((GMainLoop *)user_data);
+}
+
 int
 main (int argc, char ** argv) {
-	gint result = 0;
+	GMainLoop * loop = NULL;
 	IndicatorSoundService* service = NULL;
+	GDBusConnection * bus = NULL;
 
 	bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
 	setlocale (LC_ALL, "");
 	bindtextdomain (GETTEXT_PACKAGE, GNOMELOCALEDIR);
 
+	/* Grab DBus */
+	GError * error = NULL;
+	bus = g_bus_get_sync(G_BUS_TYPE_SESSION, NULL, &error);
+	if (error != NULL) {
+		g_error("Unable to get session bus: %s", error->message);
+		g_error_free(error);
+		return -1;
+	}
+
+	/* Build Mainloop */
+	loop = g_main_loop_new(NULL, FALSE);
+
+	g_unix_signal_add(SIGTERM, sigterm_handler, loop); 
+
 	/* Initialize libnotify */
 	notify_init ("indicator-sound");
 
 	MediaPlayerList * playerlist = NULL;
+	AccountsServiceUser * accounts = NULL;
 
 	if (g_strcmp0("lightdm", g_get_user_name()) == 0) {
 		playerlist = MEDIA_PLAYER_LIST(media_player_list_greeter_new());
 	} else {
 		playerlist = MEDIA_PLAYER_LIST(media_player_list_mpris_new());
+		accounts = accounts_service_user_new();
 	}
 
-	service = indicator_sound_service_new (playerlist);
-	result = indicator_sound_service_run (service);
+	VolumeControlPulse * volume = volume_control_pulse_new();
 
-	g_object_unref(playerlist);
-	g_object_unref(service);
+	service = indicator_sound_service_new (playerlist, volume, accounts);
 
-	return result;
-}
+	g_bus_own_name_on_connection(bus,
+		"com.canonical.indicator.sound",
+		G_BUS_NAME_OWNER_FLAGS_NONE,
+		NULL, /* acquired */
+		name_lost,
+		loop,
+		NULL);
 
+	g_main_loop_run(loop);
+
+	g_clear_object(&playerlist);
+	g_clear_object(&accounts);
+	g_clear_object(&service);
+	g_clear_object(&bus);
+
+	return 0;
+}
 
diff --git a/src/media-player-list.vala b/src/media-player-list.vala
index fadbf63..03cd7d6 100644
--- a/src/media-player-list.vala
+++ b/src/media-player-list.vala
@@ -17,7 +17,7 @@
  *      Ted Gould <ted@canonical.com>
  */
 
-public class MediaPlayerList {
+public abstract class MediaPlayerList : Object {
 	public class Iterator {
 		public virtual MediaPlayer? next_value() {
 			return null;
diff --git a/src/service.vala b/src/service.vala
index b07f267..14a49da 100644
--- a/src/service.vala
+++ b/src/service.vala
@@ -18,13 +18,29 @@
  */
 
 public class IndicatorSound.Service: Object {
-	public Service (MediaPlayerList playerlist) {
+	DBusConnection bus;
+	DBusProxy notification_proxy;
+
+	public Service (MediaPlayerList playerlist, VolumeControl volume, AccountsServiceUser? accounts) {
+		try {
+			bus = Bus.get_sync(GLib.BusType.SESSION);
+		} catch (GLib.Error e) {
+			error("Unable to get DBus session bus: %s", e.message);
+		}
+
 		sync_notification = new Notify.Notification(_("Volume"), "", "audio-volume-muted");
-		this.notification_server_watch = GLib.Bus.watch_name(GLib.BusType.SESSION,
-			"org.freedesktop.Notifications",
-			GLib.BusNameWatcherFlags.NONE,
-			() => { check_sync_notification = false; },
-			() => { check_sync_notification = false; });
+		try {
+			this.notification_proxy = new DBusProxy.for_bus_sync(GLib.BusType.SESSION,
+				DBusProxyFlags.DO_NOT_LOAD_PROPERTIES | DBusProxyFlags.DO_NOT_CONNECT_SIGNALS | DBusProxyFlags.DO_NOT_AUTO_START,
+				null, /* interface info */
+				"org.freedesktop.Notifications",
+				"/org/freedesktop/Notifications",
+				"org.freedesktop.Notifications",
+				null);
+			this.notification_proxy.notify["g-name-owner"].connect ( () => { debug("Notifications name owner changed"); check_sync_notification = false; } );
+		} catch (GLib.Error e) {
+			error("Unable to build notification proxy: %s", e.message);
+		}
 
 		this.settings = new Settings ("com.canonical.indicator.sound");
 		this.sharedsettings = new Settings ("com.ubuntu.sound");
@@ -32,12 +48,11 @@ public class IndicatorSound.Service: Object {
 		this.settings.bind ("visible", this, "visible", SettingsBindFlags.GET);
 		this.notify["visible"].connect ( () => this.update_root_icon () );
 
-		this.volume_control = new VolumeControl ();
+		this.volume_control = volume;
 
+		this.accounts_service = accounts;
 		/* If we're on the greeter, don't export */
-		if (GLib.Environment.get_user_name() != "lightdm") {
-			this.accounts_service = new AccountsServiceUser();
-
+		if (this.accounts_service != null) {
 			this.accounts_service.notify["showDataOnGreeter"].connect(() => {
 				this.export_to_accounts_service = this.accounts_service.showDataOnGreeter;
 				eventually_update_player_actions();
@@ -90,9 +105,27 @@ public class IndicatorSound.Service: Object {
 				}
 			}
 		});
+
+		/* Everything is built, let's put it on the bus */
+		try {
+			export_actions = bus.export_action_group ("/com/canonical/indicator/sound", this.actions);
+		} catch (Error e) {
+			critical ("%s", e.message);
+		}
+
+		this.menus.@foreach ( (profile, menu) => menu.export (bus, @"/com/canonical/indicator/sound/$profile"));
 	}
 
 	~Service() {
+		debug("Destroying Service Object");
+
+		clear_acts_player();
+
+		if (this.player_action_update_id > 0) {
+			Source.remove (this.player_action_update_id);
+			this.player_action_update_id = 0;
+		}
+
 		if (this.sound_was_blocked_timeout_id > 0) {
 			Source.remove (this.sound_was_blocked_timeout_id);
 			this.sound_was_blocked_timeout_id = 0;
@@ -102,6 +135,11 @@ public class IndicatorSound.Service: Object {
 			GLib.Bus.unwatch_name(this.notification_server_watch);
 			this.notification_server_watch = 0;
 		}
+
+		if (this.export_actions != 0) {
+			bus.unexport_action_group(this.export_actions);
+			this.export_actions = 0;
+		}
 	}
 
 	bool greeter_show_track () {
@@ -115,30 +153,6 @@ public class IndicatorSound.Service: Object {
 			this.accounts_service.player = null;
 	}
 
-	public int run () {
-		if (this.loop != null) {
-			warning ("service is already running");
-			return 1;
-		}
-
-		Bus.own_name (BusType.SESSION, "com.canonical.indicator.sound", BusNameOwnerFlags.NONE,
-			this.bus_acquired, null, this.name_lost);
-
-		this.loop = new MainLoop (null, false);
-
-		GLib.Unix.signal_add(GLib.ProcessSignal.TERM, () => {
-			debug("SIGTERM recieved, stopping our mainloop");
-			this.loop.quit();
-			return false;
-		});
-
-		this.loop.run ();
-
-		clear_acts_player();
-
-		return 0;
-	}
-
 	public bool visible { get; set; }
 
 	public bool allow_amplified_volume {
@@ -171,7 +185,6 @@ public class IndicatorSound.Service: Object {
 		{ "indicator-shown", null, null, "@b false", null },
 	};
 
-	MainLoop loop;
 	SimpleActionGroup actions;
 	HashTable<string, SoundMenu> menus;
 	Settings settings;
@@ -275,6 +288,7 @@ public class IndicatorSound.Service: Object {
 
 	void update_sync_notification () {
 		if (!check_sync_notification) {
+			support_sync_notification = false;
 			List<string> caps = Notify.get_server_caps ();
 			if (caps.find_custom ("x-canonical-private-synchronous", strcmp) != null) {
 				support_sync_notification = true;
@@ -285,21 +299,6 @@ public class IndicatorSound.Service: Object {
 		if (!support_sync_notification)
 			return;
 
-		/* Update our volume and output */
-		var oldoutput = this.last_output_notification;
-		this.last_output_notification = this.volume_control.stream;
-
-		var oldvolume = this.last_volume_notification;
-		this.last_volume_notification = volume_control.volume;
-
-		/* Suppress notifications of volume changes if it is because the 
-		   output stream changed. */
-		if (oldoutput != this.last_output_notification)
-			return;
-		/* Supress updates that don't change the value */
-		if (GLib.Math.fabs(oldvolume - this.last_volume_notification) < 0.01)
-			return;
-
 		var shown_action = actions.lookup_action ("indicator-shown") as SimpleAction;
 		if (shown_action != null && shown_action.get_state().get_boolean())
 			return;
@@ -341,13 +340,14 @@ public class IndicatorSound.Service: Object {
 		}
 	}
 
+	SimpleAction silent_action;
 	Action create_silent_mode_action () {
 		bool silentNow = false;
 		if (this.accounts_service != null) {
 			silentNow = this.accounts_service.silentMode;
 		}
 
-		var silent_action = new SimpleAction.stateful ("silent-mode", null, new Variant.boolean (silentNow));
+		silent_action = new SimpleAction.stateful ("silent-mode", null, new Variant.boolean (silentNow));
 
 		/* If we're not dealing with accounts service, we'll just always be out
 		   of silent mode and that's cool. */
@@ -371,8 +371,9 @@ public class IndicatorSound.Service: Object {
 		return silent_action;
 	}
 
+	SimpleAction mute_action;
 	Action create_mute_action () {
-		var mute_action = new SimpleAction.stateful ("mute", null, new Variant.boolean (this.volume_control.mute));
+		mute_action = new SimpleAction.stateful ("mute", null, new Variant.boolean (this.volume_control.mute));
 
 		mute_action.activate.connect ( (action, param) => {
 			action.change_state (new Variant.boolean (!action.get_state ().get_boolean ()));
@@ -415,6 +416,7 @@ public class IndicatorSound.Service: Object {
 		return mute_action;
 	}
 
+	SimpleAction volume_action;
 	Action create_volume_action () {
 		/* The action's state is between be in [0.0, 1.0] instead of [0.0,
 		 * max_volume], so that we don't need to update the slider menu item
@@ -425,7 +427,7 @@ public class IndicatorSound.Service: Object {
 
 		double volume = this.volume_control.volume / this.max_volume;
 
-		var volume_action = new SimpleAction.stateful ("volume", VariantType.INT32, new Variant.double (volume));
+		volume_action = new SimpleAction.stateful ("volume", VariantType.INT32, new Variant.double (volume));
 
 		volume_action.change_state.connect ( (action, val) => {
 			double v = val.get_double () * this.max_volume;
@@ -440,12 +442,26 @@ public class IndicatorSound.Service: Object {
 		});
 
 		this.volume_control.notify["volume"].connect (() => {
-			var vol_action = this.actions.lookup_action ("volume") as SimpleAction;
-
 			/* Normalize volume, because the volume action's state is [0.0, 1.0], see create_volume_action() */
-			vol_action.set_state (new Variant.double (this.volume_control.volume / this.max_volume));
+			volume_action.set_state (new Variant.double (this.volume_control.volume / this.max_volume));
 
 			this.update_root_icon ();
+
+			/* Update our volume and output */
+			var oldoutput = this.last_output_notification;
+			this.last_output_notification = this.volume_control.stream;
+
+			var oldvolume = this.last_volume_notification;
+			this.last_volume_notification = volume_control.volume;
+
+			/* Suppress notifications of volume changes if it is because the 
+			   output stream changed. */
+			if (oldoutput != this.last_output_notification)
+				return;
+			/* Supress updates that don't change the value */
+			if (GLib.Math.fabs(oldvolume - this.last_volume_notification) < 0.01)
+				return;
+
 			this.update_sync_notification ();
 		});
 
@@ -454,24 +470,26 @@ public class IndicatorSound.Service: Object {
 		return volume_action;
 	}
 
+	SimpleAction mic_volume_action;
 	Action create_mic_volume_action () {
-		var volume_action = new SimpleAction.stateful ("mic-volume", null, new Variant.double (this.volume_control.mic_volume));
+		mic_volume_action = new SimpleAction.stateful ("mic-volume", null, new Variant.double (this.volume_control.mic_volume));
 
-		volume_action.change_state.connect ( (action, val) => {
+		mic_volume_action.change_state.connect ( (action, val) => {
 			volume_control.mic_volume = val.get_double ();
 		});
 
 		this.volume_control.notify["mic-volume"].connect ( () => {
-			volume_action.set_state (new Variant.double (this.volume_control.mic_volume));
+			mic_volume_action.set_state (new Variant.double (this.volume_control.mic_volume));
 		});
 
-		this.volume_control.bind_property ("ready", volume_action, "enabled", BindingFlags.SYNC_CREATE);
+		this.volume_control.bind_property ("ready", mic_volume_action, "enabled", BindingFlags.SYNC_CREATE);
 
-		return volume_action;
+		return mic_volume_action;
 	}
 
+	SimpleAction high_volume_action;
 	Action create_high_volume_action () {
-		var high_volume_action = new SimpleAction.stateful("high-volume", null, new Variant.boolean (this.volume_control.high_volume));
+		high_volume_action = new SimpleAction.stateful("high-volume", null, new Variant.boolean (this.volume_control.high_volume));
 
 		this.volume_control.notify["high-volume"].connect( () => {
 			high_volume_action.set_state(new Variant.boolean (this.volume_control.high_volume));
@@ -481,19 +499,7 @@ public class IndicatorSound.Service: Object {
 		return high_volume_action;
 	}
 
-	void bus_acquired (DBusConnection connection, string name) {
-		try {
-			connection.export_action_group ("/com/canonical/indicator/sound", this.actions);
-		} catch (Error e) {
-			critical ("%s", e.message);
-		}
-
-		this.menus.@foreach ( (profile, menu) => menu.export (connection, @"/com/canonical/indicator/sound/$profile"));
-	}
-
-	void name_lost (DBusConnection connection, string name) {
-		this.loop.quit ();
-	}
+	uint export_actions = 0;
 
 	Variant action_state_for_player (MediaPlayer player, bool show_track = true) {
 		var builder = new VariantBuilder (new VariantType ("a{sv}"));
diff --git a/src/sound-menu.vala b/src/sound-menu.vala
index 96dd143..8718162 100644
--- a/src/sound-menu.vala
+++ b/src/sound-menu.vala
@@ -73,9 +73,20 @@ public class SoundMenu: Object
 		this.greeter_players = (flags & DisplayFlags.GREETER_PLAYERS) != 0;
 	}
 
+	~SoundMenu () {
+		if (export_id != 0) {
+			bus.unexport_menu_model(export_id);
+			export_id = 0;
+		}
+	}
+
+	DBusConnection? bus = null;
+	uint export_id = 0;
+
 	public void export (DBusConnection connection, string object_path) {
+		bus = connection;
 		try {
-			connection.export_menu_model (object_path, this.root);
+			export_id = bus.export_menu_model (object_path, this.root);
 		} catch (Error e) {
 			critical ("%s", e.message);
 		}
diff --git a/src/volume-control-pulse.vala b/src/volume-control-pulse.vala
new file mode 100644
index 0000000..1e81ce1
--- /dev/null
+++ b/src/volume-control-pulse.vala
@@ -0,0 +1,917 @@
+/*
+ * -*- Mode:Vala; indent-tabs-mode:t; tab-width:4; encoding:utf8 -*-
+ * Copyright 2013 Canonical Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors:
+ *      Alberto Ruiz <alberto.ruiz@canonical.com>
+ */
+
+using PulseAudio;
+using Notify;
+using Gee;
+
+[CCode(cname="pa_cvolume_set", cheader_filename = "pulse/volume.h")]
+extern unowned PulseAudio.CVolume? vol_set (PulseAudio.CVolume? cv, uint channels, PulseAudio.Volume v);
+
+[DBus (name="com.canonical.UnityGreeter.List")]
+interface GreeterListInterface : Object
+{
+    public abstract async string get_active_entry () throws IOError;
+    public signal void entry_selected (string entry_name);
+}
+
+public class VolumeControlPulse : VolumeControl
+{
+	/* this is static to ensure it being freed after @context (loop does not have ref counting) */
+	private static PulseAudio.GLibMainLoop loop;
+
+	private uint _reconnect_timer = 0;
+
+	private PulseAudio.Context context;
+	private bool   _mute = true;
+	private bool   _is_playing = false;
+	private double _volume = 0.0;
+	private double _mic_volume = 0.0;
+
+	/* Used by the pulseaudio stream restore extension */
+	private DBusConnection _pconn;
+	/* Need both the list and hash so we can retrieve the last known sink-input after
+	 * releasing the current active one (restoring back to the previous known role) */
+	private Gee.ArrayList<uint32> _sink_input_list = new Gee.ArrayList<uint32> ();
+	private HashMap<uint32, string> _sink_input_hash = new HashMap<uint32, string> ();
+	private bool _pulse_use_stream_restore = false;
+	private uint32 _active_sink_input = -1;
+	private string[] _valid_roles = {"multimedia", "alert", "alarm", "phone"};
+	public override string stream {
+		get {
+			if (_active_sink_input < 0 || _active_sink_input >= _valid_roles.length)
+				return "multimedia";
+			else
+				return _valid_roles[_active_sink_input];
+		}
+	}
+	private string? _objp_role_multimedia = null;
+	private string? _objp_role_alert = null;
+	private string? _objp_role_alarm = null;
+	private string? _objp_role_phone = null;
+	private uint _pa_volume_sig_count = 0;
+
+	private DBusProxy _user_proxy;
+	private GreeterListInterface _greeter_proxy;
+	private Cancellable _mute_cancellable;
+	private Cancellable _volume_cancellable;
+	private uint _local_volume_timer = 0;
+	private uint _accountservice_volume_timer = 0;
+	private bool _send_next_local_volume = false;
+	private double _account_service_volume = 0.0;
+	private bool _active_port_headphone = false;
+
+	/** true when connected to the pulse server */
+	public override bool ready { get; private set; }
+
+	/** true when a microphone is active **/
+	public override bool active_mic { get; private set; default = false; }
+
+	/** true when high volume warnings should be shown */
+	public override bool high_volume {
+		get {
+			return this._volume > 0.75 && _active_port_headphone;	
+		}
+	}
+
+	public VolumeControlPulse ()
+	{
+		if (loop == null)
+			loop = new PulseAudio.GLibMainLoop ();
+
+		_mute_cancellable = new Cancellable ();
+		_volume_cancellable = new Cancellable ();
+
+		setup_accountsservice.begin ();
+
+		this.reconnect_to_pulse ();
+	}
+
+	~VolumeControlPulse ()
+	{
+		if (_reconnect_timer != 0) {
+			Source.remove (_reconnect_timer);
+			_reconnect_timer = 0;
+		}
+		stop_local_volume_timer();
+		stop_account_service_volume_timer();
+	}
+
+	/* PulseAudio logic*/
+	private void context_events_cb (Context c, Context.SubscriptionEventType t, uint32 index)
+	{
+		switch (t & Context.SubscriptionEventType.FACILITY_MASK)
+		{
+			case Context.SubscriptionEventType.SINK:
+				update_sink ();
+				break;
+
+			case Context.SubscriptionEventType.SINK_INPUT:
+				switch (t & Context.SubscriptionEventType.TYPE_MASK)
+				{
+					case Context.SubscriptionEventType.NEW:
+						c.get_sink_input_info (index, handle_new_sink_input_cb);
+						break;
+
+					case Context.SubscriptionEventType.CHANGE:
+						c.get_sink_input_info (index, handle_changed_sink_input_cb);
+						break;
+
+					case Context.SubscriptionEventType.REMOVE:
+						remove_sink_input_from_list (index);
+						break;
+					default:
+						debug ("Sink input event not known.");
+						break;
+				}
+				break;
+
+			case Context.SubscriptionEventType.SOURCE:
+				update_source ();
+				break;
+
+			case Context.SubscriptionEventType.SOURCE_OUTPUT:
+				switch (t & Context.SubscriptionEventType.TYPE_MASK)
+				{
+					case Context.SubscriptionEventType.NEW:
+						c.get_source_output_info (index, source_output_info_cb);
+						break;
+
+					case Context.SubscriptionEventType.REMOVE:
+						this.active_mic = false;
+						break;
+				}
+				break;
+		}
+	}
+
+	private void sink_info_cb_for_props (Context c, SinkInfo? i, int eol)
+	{
+		bool old_high_volume = this.high_volume;
+
+		if (i == null)
+			return;
+
+		if (_mute != (bool)i.mute)
+		{
+			_mute = (bool)i.mute;
+			this.notify_property ("mute");
+		}
+
+		var playing = (i.state == PulseAudio.SinkState.RUNNING);
+		if (_is_playing != playing)
+		{
+			_is_playing = playing;
+			this.notify_property ("is-playing");
+		}
+
+		/* Check if the current active port is headset/headphone */
+		/* There is not easy way to check if the port is a headset/headphone besides
+		 * checking for the port name. On touch (with the pulseaudio droid element)
+		 * the headset/headphone port is called 'output-headset' and 'output-headphone'.
+		 * On the desktop this is usually called 'analog-output-headphones' */
+		if (i.active_port != null &&
+			(i.active_port.name == "output-wired_headset" ||
+		 	 i.active_port.name == "output-wired_headphone" ||
+			 i.active_port.name == "analog-output-headphones")) {
+			_active_port_headphone = true;
+		} else {
+			_active_port_headphone = false;
+		}
+
+		if (_pulse_use_stream_restore == false &&
+				_volume != volume_to_double (i.volume.max ()))
+		{
+			_volume = volume_to_double (i.volume.max ());
+			this.notify_property("volume");
+			start_local_volume_timer();
+		} 
+		
+		if (this.high_volume != old_high_volume) {
+			this.notify_property("high-volume");
+		}
+	}
+
+	private void source_info_cb (Context c, SourceInfo? i, int eol)
+	{
+		if (i == null)
+			return;
+
+		if (_mic_volume != volume_to_double (i.volume.values[0]))
+		{
+			_mic_volume = volume_to_double (i.volume.values[0]);
+			this.notify_property ("mic-volume");
+		}
+	}
+
+	private void server_info_cb_for_props (Context c, ServerInfo? i)
+	{
+		if (i == null)
+			return;
+		context.get_sink_info_by_name (i.default_sink_name, sink_info_cb_for_props);
+	}
+
+	private void update_sink ()
+	{
+		context.get_server_info (server_info_cb_for_props);
+	}
+
+	private void update_source_get_server_info_cb (PulseAudio.Context c, PulseAudio.ServerInfo? i) {
+		if (i != null)
+			context.get_source_info_by_name (i.default_source_name, source_info_cb);
+	}
+
+	private void update_source ()
+	{
+		context.get_server_info (update_source_get_server_info_cb);
+	}
+
+	private DBusMessage pulse_dbus_filter (DBusConnection connection, owned DBusMessage message, bool incoming)
+	{
+		if (message.get_message_type () == DBusMessageType.SIGNAL) {
+			string active_role_objp = _objp_role_alert;
+			if (_active_sink_input != -1)
+				active_role_objp = _sink_input_hash.get (_active_sink_input);
+
+			if (message.get_path () == active_role_objp && message.get_member () == "VolumeUpdated") {
+				uint sig_count = 0;
+				lock (_pa_volume_sig_count) {
+					sig_count = _pa_volume_sig_count;
+					if (_pa_volume_sig_count > 0)
+						_pa_volume_sig_count--;
+				}
+
+				/* We only care about signals if our internal count is zero */
+				if (sig_count == 0) {
+					/* Extract volume and make sure it's not a side effect of us setting it */
+					Variant body = message.get_body ();
+					Variant varray = body.get_child_value (0);
+
+					uint32 type = 0, volume = 0;
+					VariantIter iter = varray.iterator ();
+					iter.next ("(uu)", &type, &volume);
+					/* Here we need to compare integer values to avoid rounding issues, so just
+					 * using the volume values used by pulseaudio */
+					PulseAudio.Volume cvolume = double_to_volume (_volume);
+					if (volume != cvolume) {
+						/* Someone else changed the volume for this role, reflect on the indicator */
+						_volume = volume_to_double (volume);
+						this.notify_property("volume");
+						start_local_volume_timer();
+					}
+				}
+			}
+		}
+
+		return message;
+	}
+
+	private async void update_active_sink_input (uint32 index)
+	{
+		if ((index == -1) || (index != _active_sink_input && index in _sink_input_list)) {
+			string sink_input_objp = _objp_role_alert;
+			if (index != -1)
+				sink_input_objp = _sink_input_hash.get (index);
+			_active_sink_input = index;
+
+			/* Listen for role volume changes from pulse itself (external clients) */
+			try {
+				var builder = new VariantBuilder (new VariantType ("ao"));
+				builder.add ("o", sink_input_objp);
+
+				yield _pconn.call ("org.PulseAudio.Core1", "/org/pulseaudio/core1",
+						"org.PulseAudio.Core1", "ListenForSignal",
+						new Variant ("(sao)", "org.PulseAudio.Ext.StreamRestore1.RestoreEntry.VolumeUpdated", builder),
+						null, DBusCallFlags.NONE, -1);
+			} catch (GLib.Error e) {
+				warning ("unable to listen for pulseaudio dbus signals (%s)", e.message);
+			}
+
+			try {
+				var props_variant = yield _pconn.call ("org.PulseAudio.Ext.StreamRestore1.RestoreEntry",
+						sink_input_objp, "org.freedesktop.DBus.Properties", "Get",
+						new Variant ("(ss)", "org.PulseAudio.Ext.StreamRestore1.RestoreEntry", "Volume"),
+						null, DBusCallFlags.NONE, -1);
+				Variant tmp;
+				props_variant.get ("(v)", out tmp);
+				uint32 type = 0, volume = 0;
+				VariantIter iter = tmp.iterator ();
+				iter.next ("(uu)", &type, &volume);
+
+				_volume = volume_to_double (volume);
+				this.notify_property("volume");
+				start_local_volume_timer();
+			} catch (GLib.Error e) {
+				warning ("unable to get volume for active role %s (%s)", sink_input_objp, e.message);
+			}
+		}
+	}
+
+	private void add_sink_input_into_list (SinkInputInfo sink_input)
+	{
+		/* We're only adding ones that are not corked and with a valid role */
+		var role = sink_input.proplist.gets (PulseAudio.Proplist.PROP_MEDIA_ROLE);
+
+		if (role != null && role in _valid_roles) {
+			if (sink_input.corked == 0 || role == "phone") {
+				_sink_input_list.insert (0, sink_input.index);
+				switch (role)
+				{
+					case "multimedia":
+						_sink_input_hash.set (sink_input.index, _objp_role_multimedia);
+						break;
+					case "alert":
+						_sink_input_hash.set (sink_input.index, _objp_role_alert);
+						break;
+					case "alarm":
+						_sink_input_hash.set (sink_input.index, _objp_role_alarm);
+						break;
+					case "phone":
+						_sink_input_hash.set (sink_input.index, _objp_role_phone);
+						break;
+				}
+				/* Only switch the active sink input in case a phone one is not active */
+				if (_active_sink_input == -1 ||
+						_sink_input_hash.get (_active_sink_input) != _objp_role_phone)
+					update_active_sink_input.begin (sink_input.index);
+			}
+		}
+	}
+
+	private void remove_sink_input_from_list (uint32 index)
+	{
+		if (index in _sink_input_list) {
+			_sink_input_list.remove (index);
+			_sink_input_hash.unset (index);
+			if (index == _active_sink_input) {
+				if (_sink_input_list.size != 0)
+					update_active_sink_input.begin (_sink_input_list.get (0));
+				else
+					update_active_sink_input.begin (-1);
+			}
+		}
+	}
+
+	private void handle_new_sink_input_cb (Context c, SinkInputInfo? i, int eol)
+	{
+		if (i == null)
+			return;
+
+		add_sink_input_into_list (i);
+	}
+
+	private void handle_changed_sink_input_cb (Context c, SinkInputInfo? i, int eol)
+	{
+		if (i == null)
+			return;
+
+		if (i.index in _sink_input_list) {
+			/* Phone stream is always corked, so handle it differently */
+			if (i.corked == 1 && _sink_input_hash.get (i.index) != _objp_role_phone)
+				remove_sink_input_from_list (i.index);
+		} else {
+			if (i.corked == 0)
+				add_sink_input_into_list (i);
+		}
+	}
+
+	private void source_output_info_cb (Context c, SourceOutputInfo? i, int eol)
+	{
+		if (i == null)
+			return;
+
+		var role = i.proplist.gets (PulseAudio.Proplist.PROP_MEDIA_ROLE);
+		if (role == "phone" || role == "production")
+			this.active_mic = true;
+	}
+
+	private void context_state_callback (Context c)
+	{
+		switch (c.get_state ()) {
+			case Context.State.READY:
+				if (_pulse_use_stream_restore) {
+					c.subscribe (PulseAudio.Context.SubscriptionMask.SINK |
+							PulseAudio.Context.SubscriptionMask.SINK_INPUT |
+							PulseAudio.Context.SubscriptionMask.SOURCE |
+							PulseAudio.Context.SubscriptionMask.SOURCE_OUTPUT);
+				} else {
+					c.subscribe (PulseAudio.Context.SubscriptionMask.SINK |
+							PulseAudio.Context.SubscriptionMask.SOURCE |
+							PulseAudio.Context.SubscriptionMask.SOURCE_OUTPUT);
+				}
+				c.set_subscribe_callback (context_events_cb);
+				update_sink ();
+				update_source ();
+				this.ready = true;
+				break;
+
+			case Context.State.FAILED:
+			case Context.State.TERMINATED:
+				if (_reconnect_timer == 0)
+					_reconnect_timer = Timeout.add_seconds (2, reconnect_timeout);
+				break;
+
+			default:
+				this.ready = false;
+				break;
+		}
+	}
+
+	bool reconnect_timeout ()
+	{
+		_reconnect_timer = 0;
+		reconnect_to_pulse ();
+		return false; // G_SOURCE_REMOVE
+	}
+
+	void reconnect_to_pulse ()
+	{
+		if (this.ready) {
+			this.context.disconnect ();
+			this.context = null;
+			this.ready = false;
+		}
+
+		var props = new Proplist ();
+		props.sets (Proplist.PROP_APPLICATION_NAME, "Ubuntu Audio Settings");
+		props.sets (Proplist.PROP_APPLICATION_ID, "com.canonical.settings.sound");
+		props.sets (Proplist.PROP_APPLICATION_ICON_NAME, "multimedia-volume-control");
+		props.sets (Proplist.PROP_APPLICATION_VERSION, "0.1");
+
+		reconnect_pulse_dbus ();
+
+		this.context = new PulseAudio.Context (loop.get_api(), null, props);
+		this.context.set_state_callback (context_state_callback);
+
+		if (context.connect(null, Context.Flags.NOFAIL, null) < 0)
+			warning( "pa_context_connect() failed: %s\n", PulseAudio.strerror(context.errno()));
+	}
+
+	void sink_info_list_callback_set_mute (PulseAudio.Context context, PulseAudio.SinkInfo? sink, int eol) {
+		if (sink != null)
+			context.set_sink_mute_by_index (sink.index, true, null);
+	}
+
+	void sink_info_list_callback_unset_mute (PulseAudio.Context context, PulseAudio.SinkInfo? sink, int eol) {
+		if (sink != null)
+			context.set_sink_mute_by_index (sink.index, false, null);
+	}
+
+	/* Mute operations */
+	bool set_mute_internal (bool mute)
+	{
+		return_val_if_fail (context.get_state () == Context.State.READY, false);
+
+		if (_mute != mute) {
+			if (mute)
+				context.get_sink_info_list (sink_info_list_callback_set_mute);
+			else
+				context.get_sink_info_list (sink_info_list_callback_unset_mute);
+			return true;
+		} else {
+			return false;
+		}
+	}
+
+	public override void set_mute (bool mute)
+	{
+		if (set_mute_internal (mute))
+			sync_mute_to_accountsservice.begin (mute);
+	}
+
+	public void toggle_mute ()
+	{
+		this.set_mute (!this._mute);
+	}
+
+	public override bool mute
+	{
+		get
+		{
+			return this._mute;
+		}
+	}
+
+	public override bool is_playing
+	{
+		get
+		{
+			return this._is_playing;
+		}
+	}
+
+	/* Volume operations */
+	private static PulseAudio.Volume double_to_volume (double vol)
+	{
+		double tmp = (double)(PulseAudio.Volume.NORM - PulseAudio.Volume.MUTED) * vol;
+		return (PulseAudio.Volume)tmp + PulseAudio.Volume.MUTED;
+	}
+
+	private static double volume_to_double (PulseAudio.Volume vol)
+	{
+		double tmp = (double)(vol - PulseAudio.Volume.MUTED);
+		return tmp / (double)(PulseAudio.Volume.NORM - PulseAudio.Volume.MUTED);
+	}
+
+	private void set_volume_success_cb (Context c, int success)
+	{
+		if ((bool)success)
+			this.notify_property("volume");
+	}
+
+	private void sink_info_set_volume_cb (Context c, SinkInfo? i, int eol)
+	{
+		if (i == null)
+			return;
+
+		unowned CVolume cvol = i.volume;
+		cvol.scale (double_to_volume (_volume));
+		c.set_sink_volume_by_index (i.index, cvol, set_volume_success_cb);
+	}
+
+	private void server_info_cb_for_set_volume (Context c, ServerInfo? i)
+	{
+		if (i == null)
+		{
+			warning ("Could not get PulseAudio server info");
+			return;
+		}
+
+		context.get_sink_info_by_name (i.default_sink_name, sink_info_set_volume_cb);
+	}
+
+	private async void set_volume_active_role ()
+	{
+		string active_role_objp = _objp_role_alert;
+
+		if (_active_sink_input != -1 && _active_sink_input in _sink_input_list)
+			active_role_objp = _sink_input_hash.get (_active_sink_input);
+
+		try {
+			var builder = new VariantBuilder (new VariantType ("a(uu)"));
+			builder.add ("(uu)", 0, double_to_volume (_volume));
+			Variant volume = builder.end ();
+
+			/* Increase the signal counter so we can handle the callback */
+			lock (_pa_volume_sig_count) {
+				_pa_volume_sig_count++;
+			}
+
+			yield _pconn.call ("org.PulseAudio.Ext.StreamRestore1.RestoreEntry",
+					active_role_objp, "org.freedesktop.DBus.Properties", "Set",
+					new Variant ("(ssv)", "org.PulseAudio.Ext.StreamRestore1.RestoreEntry", "Volume", volume),
+					null, DBusCallFlags.NONE, -1);
+
+			this.notify_property("volume");
+		} catch (GLib.Error e) {
+			lock (_pa_volume_sig_count) {
+				_pa_volume_sig_count--;
+			}
+			warning ("unable to set volume for stream obj path %s (%s)", active_role_objp, e.message);
+		}
+	}
+
+	bool set_volume_internal (double volume)
+	{
+		if (context.get_state () != Context.State.READY)
+			return false;
+
+		if (_volume != volume) {
+			var old_high_volume = this.high_volume;
+
+			_volume = volume;
+			if (_pulse_use_stream_restore)
+				set_volume_active_role.begin ();
+			else
+				context.get_server_info (server_info_cb_for_set_volume);
+
+			this.notify_property("volume");
+
+			if (this.high_volume != old_high_volume)
+				this.notify_property("high-volume");
+
+			return true;
+		} else {
+			return false;
+		}
+	}
+
+	void set_mic_volume_success_cb (Context c, int success)
+	{
+		if ((bool)success)
+			this.notify_property ("mic-volume");
+	}
+
+	void set_mic_volume_get_server_info_cb (PulseAudio.Context c, PulseAudio.ServerInfo? i) {
+		if (i != null) {
+			unowned CVolume cvol = CVolume ();
+			cvol = vol_set (cvol, 1, double_to_volume (_mic_volume));
+			c.set_source_volume_by_name (i.default_source_name, cvol, set_mic_volume_success_cb);
+		}
+	}
+
+	public override double volume {
+		get {
+			return _volume;
+		}
+		set {
+			if (set_volume_internal (value)) {
+				start_local_volume_timer();
+			}
+		}
+	}
+
+	public override double mic_volume {
+		get {
+			return _mic_volume;
+		}
+		set {
+			return_if_fail (context.get_state () == Context.State.READY);
+
+			_mic_volume = value;
+
+			context.get_server_info (set_mic_volume_get_server_info_cb);
+		}
+	}
+
+	/* PulseAudio Dbus (Stream Restore) logic */
+	private void reconnect_pulse_dbus ()
+	{
+		unowned string pulse_dbus_server_env = Environment.get_variable ("PULSE_DBUS_SERVER");
+		string address;
+
+		/* In case of a reconnect */
+		_pulse_use_stream_restore = false;
+		_pa_volume_sig_count = 0;
+
+		if (pulse_dbus_server_env != null) {
+			address = pulse_dbus_server_env;
+		} else {
+			DBusConnection conn;
+			Variant props;
+
+			try {
+				conn = Bus.get_sync (BusType.SESSION);
+			} catch (GLib.IOError e) {
+				warning ("unable to get the dbus session bus: %s", e.message);
+				return;
+			}
+
+			try {
+				var props_variant = conn.call_sync ("org.PulseAudio1",
+						"/org/pulseaudio/server_lookup1", "org.freedesktop.DBus.Properties",
+						"Get", new Variant ("(ss)", "org.PulseAudio.ServerLookup1", "Address"),
+						null, DBusCallFlags.NONE, -1);
+				props_variant.get ("(v)", out props);
+				address = props.get_string ();
+			} catch (GLib.Error e) {
+				warning ("unable to get pulse unix socket: %s", e.message);
+				return;
+			}
+		}
+
+		stdout.printf ("PulseAudio dbus unix socket: %s\n", address);
+		try {
+			_pconn = new DBusConnection.for_address_sync (address, DBusConnectionFlags.AUTHENTICATION_CLIENT);
+		} catch (GLib.Error e) {
+			/* If it fails, it means the dbus pulse extension is not available */
+			return;
+		}
+
+		/* For pulse dbus related events */
+		_pconn.add_filter (pulse_dbus_filter);
+
+		/* Check if the 4 currently supported media roles are already available in StreamRestore
+		 * Roles: multimedia, alert, alarm and phone */
+		_objp_role_multimedia = stream_restore_get_object_path ("sink-input-by-media-role:multimedia");
+		_objp_role_alert = stream_restore_get_object_path ("sink-input-by-media-role:alert");
+		_objp_role_alarm = stream_restore_get_object_path ("sink-input-by-media-role:alarm");
+		_objp_role_phone = stream_restore_get_object_path ("sink-input-by-media-role:phone");
+
+		/* Only use stream restore if every used role is available */
+		if (_objp_role_multimedia != null && _objp_role_alert != null && _objp_role_alarm != null && _objp_role_phone != null) {
+			stdout.printf ("Using PulseAudio DBUS Stream Restore module\n");
+			/* Restore volume and update default entry */
+			update_active_sink_input.begin (-1);
+			_pulse_use_stream_restore = true;
+		}
+	}
+
+	private string? stream_restore_get_object_path (string name) {
+		string? objp = null;
+		try {
+			Variant props_variant = _pconn.call_sync ("org.PulseAudio.Ext.StreamRestore1",
+					"/org/pulseaudio/stream_restore1", "org.PulseAudio.Ext.StreamRestore1",
+					"GetEntryByName", new Variant ("(s)", name), null, DBusCallFlags.NONE, -1);
+			/* Workaround for older versions of vala that don't provide get_objv */
+			VariantIter iter = props_variant.iterator ();
+			iter.next ("o", &objp);
+			stdout.printf ("Found obj path %s for restore data named %s\n", objp, name);
+		} catch (GLib.Error e) {
+			warning ("unable to find stream restore data for: %s", name);
+		}
+		return objp;
+	}
+
+	/* AccountsService operations */
+	private void accountsservice_props_changed_cb (DBusProxy proxy, Variant changed_properties, string[]? invalidated_properties)
+	{
+		Variant volume_variant = changed_properties.lookup_value ("Volume", new VariantType ("d"));
+		if (volume_variant != null) {
+			var volume = volume_variant.get_double ();
+			if (volume >= 0) {
+				_account_service_volume = volume;
+				// we need to wait for this to settle.
+				start_account_service_volume_timer();
+			}
+		}
+
+		Variant mute_variant = changed_properties.lookup_value ("Muted", new VariantType ("b"));
+		if (mute_variant != null) {
+			var mute = mute_variant.get_boolean ();
+			set_mute_internal (mute);
+		}
+	}
+
+	private async void setup_user_proxy (string? username_in = null)
+	{
+		var username = username_in;
+		_user_proxy = null;
+
+		// Look up currently selected greeter user, if asked
+		if (username == null) {
+			try {
+				username = yield _greeter_proxy.get_active_entry ();
+				if (username == "" || username == null)
+					return;
+			} catch (GLib.Error e) {
+				warning ("unable to find Accounts path for user %s: %s", username, e.message);
+				return;
+			}
+		}
+
+		// Get master AccountsService object
+		DBusProxy accounts_proxy;
+		try {
+			accounts_proxy = yield DBusProxy.create_for_bus (BusType.SYSTEM, DBusProxyFlags.DO_NOT_LOAD_PROPERTIES | DBusProxyFlags.DO_NOT_CONNECT_SIGNALS, null, "org.freedesktop.Accounts", "/org/freedesktop/Accounts", "org.freedesktop.Accounts");
+		} catch (GLib.Error e) {
+			warning ("unable to get greeter proxy: %s", e.message);
+			return;
+		}
+
+		// Find user's AccountsService object
+		try {
+			var user_path_variant = yield accounts_proxy.call ("FindUserByName", new Variant ("(s)", username), DBusCallFlags.NONE, -1);
+			string user_path;
+			user_path_variant.get ("(o)", out user_path);
+			_user_proxy = yield DBusProxy.create_for_bus (BusType.SYSTEM, DBusProxyFlags.GET_INVALIDATED_PROPERTIES, null, "org.freedesktop.Accounts", user_path, "com.ubuntu.AccountsService.Sound");
+		} catch (GLib.Error e) {
+			warning ("unable to find Accounts path for user %s: %s", username, e.message);
+			return;
+		}
+
+		// Get current values and listen for changes
+		_user_proxy.g_properties_changed.connect (accountsservice_props_changed_cb);
+		try {
+			var props_variant = yield _user_proxy.get_connection ().call (_user_proxy.get_name (), _user_proxy.get_object_path (), "org.freedesktop.DBus.Properties", "GetAll", new Variant ("(s)", _user_proxy.get_interface_name ()), null, DBusCallFlags.NONE, -1);
+			Variant props;
+			props_variant.get ("(@a{sv})", out props);
+			accountsservice_props_changed_cb(_user_proxy, props, null);
+		} catch (GLib.Error e) {
+			debug("Unable to get properties for user %s at first try: %s", username, e.message);
+		}
+	}
+
+	private void greeter_user_changed (string username)
+	{
+		setup_user_proxy.begin (username);
+	}
+
+	private async void setup_accountsservice ()
+	{
+		if (Environment.get_variable ("XDG_SESSION_CLASS") == "greeter") {
+			try {
+				_greeter_proxy = yield Bus.get_proxy (BusType.SESSION, "com.canonical.UnityGreeter", "/list");
+			} catch (GLib.Error e) {
+				warning ("unable to get greeter proxy: %s", e.message);
+				return;
+			}
+			_greeter_proxy.entry_selected.connect (greeter_user_changed);
+			yield setup_user_proxy ();
+		} else {
+			// We are in a user session.  We just need our own proxy
+			var username = Environment.get_variable ("USER");
+			if (username != "" && username != null) {
+				yield setup_user_proxy (username);
+			}
+		}
+	}
+
+	private async void sync_mute_to_accountsservice (bool mute)
+	{
+		if (_user_proxy == null)
+			return;
+
+		_mute_cancellable.cancel ();
+		_mute_cancellable.reset ();
+
+		try {
+			yield _user_proxy.get_connection ().call (_user_proxy.get_name (), _user_proxy.get_object_path (), "org.freedesktop.DBus.Properties", "Set", new Variant ("(ssv)", _user_proxy.get_interface_name (), "Muted", new Variant ("b", mute)), null, DBusCallFlags.NONE, -1, _mute_cancellable);
+		} catch (GLib.Error e) {
+			warning ("unable to sync mute to AccountsService: %s", e.message);
+		}
+	}
+
+	private async void sync_volume_to_accountsservice (double volume)
+	{
+		if (_user_proxy == null)
+			return;
+
+		_volume_cancellable.cancel ();
+		_volume_cancellable.reset ();
+
+		try {
+			yield _user_proxy.get_connection ().call (_user_proxy.get_name (), _user_proxy.get_object_path (), "org.freedesktop.DBus.Properties", "Set", new Variant ("(ssv)", _user_proxy.get_interface_name (), "Volume", new Variant ("d", volume)), null, DBusCallFlags.NONE, -1, _volume_cancellable);
+		} catch (GLib.Error e) {
+			warning ("unable to sync volume to AccountsService: %s", e.message);
+		}
+	}
+
+	private void start_local_volume_timer()
+	{
+		// perform a slow sync with the accounts service. max at 1 per second.
+
+		// stop the AS update timer, as since we're going to be setting the volume.
+		stop_account_service_volume_timer();
+
+		if (_local_volume_timer == 0) {
+			sync_volume_to_accountsservice.begin (_volume);
+			_local_volume_timer = Timeout.add_seconds (1, local_volume_changed_timeout);
+		} else {
+			_send_next_local_volume = true;
+		}
+	}
+
+	private void stop_local_volume_timer()
+	{
+		if (_local_volume_timer != 0) {
+			Source.remove (_local_volume_timer);
+			_local_volume_timer = 0;
+		}
+	}
+
+	bool local_volume_changed_timeout()
+	{
+		_local_volume_timer = 0;
+		if (_send_next_local_volume) {
+			_send_next_local_volume = false;
+			start_local_volume_timer ();
+		}
+		return false; // G_SOURCE_REMOVE
+	}
+
+	private void start_account_service_volume_timer()
+	{
+		if (_accountservice_volume_timer == 0) {
+			// If we haven't been messing with local volume recently, apply immediately.
+			if (_local_volume_timer == 0 && !set_volume_internal (_account_service_volume)) {
+				return;
+			}
+			// Else check again in another second if needed.
+			// (if AS is throwing us lots of notifications, we update at most once a second)
+			_accountservice_volume_timer = Timeout.add_seconds (1, accountservice_volume_changed_timeout);
+		}
+	}
+
+	private void stop_account_service_volume_timer()
+	{
+		if (_accountservice_volume_timer != 0) {
+			Source.remove (_accountservice_volume_timer);
+			_accountservice_volume_timer = 0;
+		}
+	}
+
+	bool accountservice_volume_changed_timeout ()
+	{
+		_accountservice_volume_timer = 0;
+		start_account_service_volume_timer ();
+		return false; // G_SOURCE_REMOVE
+	}
+}
diff --git a/src/volume-control.vala b/src/volume-control.vala
index 62cb2d0..b06ea56 100644
--- a/src/volume-control.vala
+++ b/src/volume-control.vala
@@ -1,6 +1,6 @@
 /*
  * -*- Mode:Vala; indent-tabs-mode:t; tab-width:4; encoding:utf8 -*-
- * Copyright 2013 Canonical Ltd.
+ * Copyright © 2015 Canonical Ltd.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -15,903 +15,19 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  * Authors:
- *      Alberto Ruiz <alberto.ruiz@canonical.com>
+ *      Ted Gould <ted@canonical.com>
  */
 
-using PulseAudio;
-using Notify;
-using Gee;
-
-[CCode(cname="pa_cvolume_set", cheader_filename = "pulse/volume.h")]
-extern unowned PulseAudio.CVolume? vol_set (PulseAudio.CVolume? cv, uint channels, PulseAudio.Volume v);
-
-[DBus (name="com.canonical.UnityGreeter.List")]
-interface GreeterListInterface : Object
-{
-    public abstract async string get_active_entry () throws IOError;
-    public signal void entry_selected (string entry_name);
-}
-
-public class VolumeControl : Object
+public abstract class VolumeControl : Object
 {
-	/* this is static to ensure it being freed after @context (loop does not have ref counting) */
-	private static PulseAudio.GLibMainLoop loop;
-
-	private uint _reconnect_timer = 0;
-
-	private PulseAudio.Context context;
-	private bool   _mute = true;
-	private bool   _is_playing = false;
-	private double _volume = 0.0;
-	private double _mic_volume = 0.0;
-
-	/* Used by the pulseaudio stream restore extension */
-	private DBusConnection _pconn;
-	/* Need both the list and hash so we can retrieve the last known sink-input after
-	 * releasing the current active one (restoring back to the previous known role) */
-	private Gee.ArrayList<uint32> _sink_input_list = new Gee.ArrayList<uint32> ();
-	private HashMap<uint32, string> _sink_input_hash = new HashMap<uint32, string> ();
-	private bool _pulse_use_stream_restore = false;
-	private uint32 _active_sink_input = -1;
-	private string[] _valid_roles = {"multimedia", "alert", "alarm", "phone"};
-	public string stream {
-		get {
-			if (_active_sink_input < 0 || _active_sink_input >= _valid_roles.length)
-				return "multimedia";
-			else
-				return _valid_roles[_active_sink_input];
-		}
-	}
-	private string? _objp_role_multimedia = null;
-	private string? _objp_role_alert = null;
-	private string? _objp_role_alarm = null;
-	private string? _objp_role_phone = null;
-	private uint _pa_volume_sig_count = 0;
-
-	private DBusProxy _user_proxy;
-	private GreeterListInterface _greeter_proxy;
-	private Cancellable _mute_cancellable;
-	private Cancellable _volume_cancellable;
-	private uint _local_volume_timer = 0;
-	private uint _accountservice_volume_timer = 0;
-	private bool _send_next_local_volume = false;
-	private double _account_service_volume = 0.0;
-	private bool _active_port_headphone = false;
-
-	/** true when connected to the pulse server */
-	public bool ready { get; set; }
-
-	/** true when a microphone is active **/
-	public bool active_mic { get; private set; default = false; }
-
-	/** true when high volume warnings should be shown */
-	public bool high_volume {
-		get {
-			return this._volume > 0.75 && _active_port_headphone;	
-		}
-	}
-
-	public VolumeControl ()
-	{
-		if (loop == null)
-			loop = new PulseAudio.GLibMainLoop ();
-
-		_mute_cancellable = new Cancellable ();
-		_volume_cancellable = new Cancellable ();
-
-		setup_accountsservice.begin ();
-
-		this.reconnect_to_pulse ();
-	}
-
-	~VolumeControl ()
-	{
-		if (_reconnect_timer != 0) {
-			Source.remove (_reconnect_timer);
-			_reconnect_timer = 0;
-		}
-		stop_local_volume_timer();
-		stop_account_service_volume_timer();
-	}
-
-	/* PulseAudio logic*/
-	private void context_events_cb (Context c, Context.SubscriptionEventType t, uint32 index)
-	{
-		switch (t & Context.SubscriptionEventType.FACILITY_MASK)
-		{
-			case Context.SubscriptionEventType.SINK:
-				update_sink ();
-				break;
-
-			case Context.SubscriptionEventType.SINK_INPUT:
-				switch (t & Context.SubscriptionEventType.TYPE_MASK)
-				{
-					case Context.SubscriptionEventType.NEW:
-						c.get_sink_input_info (index, handle_new_sink_input_cb);
-						break;
-
-					case Context.SubscriptionEventType.CHANGE:
-						c.get_sink_input_info (index, handle_changed_sink_input_cb);
-						break;
-
-					case Context.SubscriptionEventType.REMOVE:
-						remove_sink_input_from_list (index);
-						break;
-					default:
-						debug ("Sink input event not known.");
-						break;
-				}
-				break;
-
-			case Context.SubscriptionEventType.SOURCE:
-				update_source ();
-				break;
-
-			case Context.SubscriptionEventType.SOURCE_OUTPUT:
-				switch (t & Context.SubscriptionEventType.TYPE_MASK)
-				{
-					case Context.SubscriptionEventType.NEW:
-						c.get_source_output_info (index, source_output_info_cb);
-						break;
-
-					case Context.SubscriptionEventType.REMOVE:
-						this.active_mic = false;
-						break;
-				}
-				break;
-		}
-	}
-
-	private void sink_info_cb_for_props (Context c, SinkInfo? i, int eol)
-	{
-		bool old_high_volume = this.high_volume;
-
-		if (i == null)
-			return;
-
-		if (_mute != (bool)i.mute)
-		{
-			_mute = (bool)i.mute;
-			this.notify_property ("mute");
-		}
-
-		var playing = (i.state == PulseAudio.SinkState.RUNNING);
-		if (_is_playing != playing)
-		{
-			_is_playing = playing;
-			this.notify_property ("is-playing");
-		}
-
-		/* Check if the current active port is headset/headphone */
-		/* There is not easy way to check if the port is a headset/headphone besides
-		 * checking for the port name. On touch (with the pulseaudio droid element)
-		 * the headset/headphone port is called 'output-headset' and 'output-headphone'.
-		 * On the desktop this is usually called 'analog-output-headphones' */
-		if (i.active_port != null &&
-			(i.active_port.name == "output-wired_headset" ||
-		 	 i.active_port.name == "output-wired_headphone" ||
-			 i.active_port.name == "analog-output-headphones")) {
-			_active_port_headphone = true;
-		} else {
-			_active_port_headphone = false;
-		}
-
-		if (_pulse_use_stream_restore == false &&
-				_volume != volume_to_double (i.volume.max ()))
-		{
-			_volume = volume_to_double (i.volume.max ());
-			this.notify_property("volume");
-			start_local_volume_timer();
-		} 
-		
-		if (this.high_volume != old_high_volume) {
-			this.notify_property("high-volume");
-		}
-	}
-
-	private void source_info_cb (Context c, SourceInfo? i, int eol)
-	{
-		if (i == null)
-			return;
-
-		if (_mic_volume != volume_to_double (i.volume.values[0]))
-		{
-			_mic_volume = volume_to_double (i.volume.values[0]);
-			this.notify_property ("mic-volume");
-		}
-	}
-
-	private void server_info_cb_for_props (Context c, ServerInfo? i)
-	{
-		if (i == null)
-			return;
-		context.get_sink_info_by_name (i.default_sink_name, sink_info_cb_for_props);
-	}
-
-	private void update_sink ()
-	{
-		context.get_server_info (server_info_cb_for_props);
-	}
-
-	private void update_source_get_server_info_cb (PulseAudio.Context c, PulseAudio.ServerInfo? i) {
-		if (i != null)
-			context.get_source_info_by_name (i.default_source_name, source_info_cb);
-	}
-
-	private void update_source ()
-	{
-		context.get_server_info (update_source_get_server_info_cb);
-	}
-
-	private DBusMessage pulse_dbus_filter (DBusConnection connection, owned DBusMessage message, bool incoming)
-	{
-		if (message.get_message_type () == DBusMessageType.SIGNAL) {
-			string active_role_objp = _objp_role_alert;
-			if (_active_sink_input != -1)
-				active_role_objp = _sink_input_hash.get (_active_sink_input);
-
-			if (message.get_path () == active_role_objp && message.get_member () == "VolumeUpdated") {
-				uint sig_count = 0;
-				lock (_pa_volume_sig_count) {
-					sig_count = _pa_volume_sig_count;
-					if (_pa_volume_sig_count > 0)
-						_pa_volume_sig_count--;
-				}
-
-				/* We only care about signals if our internal count is zero */
-				if (sig_count == 0) {
-					/* Extract volume and make sure it's not a side effect of us setting it */
-					Variant body = message.get_body ();
-					Variant varray = body.get_child_value (0);
-
-					uint32 type = 0, volume = 0;
-					VariantIter iter = varray.iterator ();
-					iter.next ("(uu)", &type, &volume);
-					/* Here we need to compare integer values to avoid rounding issues, so just
-					 * using the volume values used by pulseaudio */
-					PulseAudio.Volume cvolume = double_to_volume (_volume);
-					if (volume != cvolume) {
-						/* Someone else changed the volume for this role, reflect on the indicator */
-						_volume = volume_to_double (volume);
-						this.notify_property("volume");
-						start_local_volume_timer();
-					}
-				}
-			}
-		}
-
-		return message;
-	}
-
-	private async void update_active_sink_input (uint32 index)
-	{
-		if ((index == -1) || (index != _active_sink_input && index in _sink_input_list)) {
-			string sink_input_objp = _objp_role_alert;
-			if (index != -1)
-				sink_input_objp = _sink_input_hash.get (index);
-			_active_sink_input = index;
-
-			/* Listen for role volume changes from pulse itself (external clients) */
-			try {
-				var builder = new VariantBuilder (new VariantType ("ao"));
-				builder.add ("o", sink_input_objp);
-
-				yield _pconn.call ("org.PulseAudio.Core1", "/org/pulseaudio/core1",
-						"org.PulseAudio.Core1", "ListenForSignal",
-						new Variant ("(sao)", "org.PulseAudio.Ext.StreamRestore1.RestoreEntry.VolumeUpdated", builder),
-						null, DBusCallFlags.NONE, -1);
-			} catch (GLib.Error e) {
-				warning ("unable to listen for pulseaudio dbus signals (%s)", e.message);
-			}
-
-			try {
-				var props_variant = yield _pconn.call ("org.PulseAudio.Ext.StreamRestore1.RestoreEntry",
-						sink_input_objp, "org.freedesktop.DBus.Properties", "Get",
-						new Variant ("(ss)", "org.PulseAudio.Ext.StreamRestore1.RestoreEntry", "Volume"),
-						null, DBusCallFlags.NONE, -1);
-				Variant tmp;
-				props_variant.get ("(v)", out tmp);
-				uint32 type = 0, volume = 0;
-				VariantIter iter = tmp.iterator ();
-				iter.next ("(uu)", &type, &volume);
-
-				_volume = volume_to_double (volume);
-				this.notify_property("volume");
-				start_local_volume_timer();
-			} catch (GLib.Error e) {
-				warning ("unable to get volume for active role %s (%s)", sink_input_objp, e.message);
-			}
-		}
-	}
-
-	private void add_sink_input_into_list (SinkInputInfo sink_input)
-	{
-		/* We're only adding ones that are not corked and with a valid role */
-		var role = sink_input.proplist.gets (PulseAudio.Proplist.PROP_MEDIA_ROLE);
-
-		if (role != null && role in _valid_roles) {
-			if (sink_input.corked == 0 || role == "phone") {
-				_sink_input_list.insert (0, sink_input.index);
-				switch (role)
-				{
-					case "multimedia":
-						_sink_input_hash.set (sink_input.index, _objp_role_multimedia);
-						break;
-					case "alert":
-						_sink_input_hash.set (sink_input.index, _objp_role_alert);
-						break;
-					case "alarm":
-						_sink_input_hash.set (sink_input.index, _objp_role_alarm);
-						break;
-					case "phone":
-						_sink_input_hash.set (sink_input.index, _objp_role_phone);
-						break;
-				}
-				/* Only switch the active sink input in case a phone one is not active */
-				if (_active_sink_input == -1 ||
-						_sink_input_hash.get (_active_sink_input) != _objp_role_phone)
-					update_active_sink_input.begin (sink_input.index);
-			}
-		}
-	}
-
-	private void remove_sink_input_from_list (uint32 index)
-	{
-		if (index in _sink_input_list) {
-			_sink_input_list.remove (index);
-			_sink_input_hash.unset (index);
-			if (index == _active_sink_input) {
-				if (_sink_input_list.size != 0)
-					update_active_sink_input.begin (_sink_input_list.get (0));
-				else
-					update_active_sink_input.begin (-1);
-			}
-		}
-	}
-
-	private void handle_new_sink_input_cb (Context c, SinkInputInfo? i, int eol)
-	{
-		if (i == null)
-			return;
-
-		add_sink_input_into_list (i);
-	}
-
-	private void handle_changed_sink_input_cb (Context c, SinkInputInfo? i, int eol)
-	{
-		if (i == null)
-			return;
-
-		if (i.index in _sink_input_list) {
-			/* Phone stream is always corked, so handle it differently */
-			if (i.corked == 1 && _sink_input_hash.get (i.index) != _objp_role_phone)
-				remove_sink_input_from_list (i.index);
-		} else {
-			if (i.corked == 0)
-				add_sink_input_into_list (i);
-		}
-	}
-
-	private void source_output_info_cb (Context c, SourceOutputInfo? i, int eol)
-	{
-		if (i == null)
-			return;
-
-		var role = i.proplist.gets (PulseAudio.Proplist.PROP_MEDIA_ROLE);
-		if (role == "phone" || role == "production")
-			this.active_mic = true;
-	}
-
-	private void context_state_callback (Context c)
-	{
-		switch (c.get_state ()) {
-			case Context.State.READY:
-				if (_pulse_use_stream_restore) {
-					c.subscribe (PulseAudio.Context.SubscriptionMask.SINK |
-							PulseAudio.Context.SubscriptionMask.SINK_INPUT |
-							PulseAudio.Context.SubscriptionMask.SOURCE |
-							PulseAudio.Context.SubscriptionMask.SOURCE_OUTPUT);
-				} else {
-					c.subscribe (PulseAudio.Context.SubscriptionMask.SINK |
-							PulseAudio.Context.SubscriptionMask.SOURCE |
-							PulseAudio.Context.SubscriptionMask.SOURCE_OUTPUT);
-				}
-				c.set_subscribe_callback (context_events_cb);
-				update_sink ();
-				update_source ();
-				this.ready = true;
-				break;
-
-			case Context.State.FAILED:
-			case Context.State.TERMINATED:
-				if (_reconnect_timer == 0)
-					_reconnect_timer = Timeout.add_seconds (2, reconnect_timeout);
-				break;
-
-			default:
-				this.ready = false;
-				break;
-		}
-	}
-
-	bool reconnect_timeout ()
-	{
-		_reconnect_timer = 0;
-		reconnect_to_pulse ();
-		return false; // G_SOURCE_REMOVE
-	}
-
-	void reconnect_to_pulse ()
-	{
-		if (this.ready) {
-			this.context.disconnect ();
-			this.context = null;
-			this.ready = false;
-		}
-
-		var props = new Proplist ();
-		props.sets (Proplist.PROP_APPLICATION_NAME, "Ubuntu Audio Settings");
-		props.sets (Proplist.PROP_APPLICATION_ID, "com.canonical.settings.sound");
-		props.sets (Proplist.PROP_APPLICATION_ICON_NAME, "multimedia-volume-control");
-		props.sets (Proplist.PROP_APPLICATION_VERSION, "0.1");
-
-		reconnect_pulse_dbus ();
-
-		this.context = new PulseAudio.Context (loop.get_api(), null, props);
-		this.context.set_state_callback (context_state_callback);
-
-		if (context.connect(null, Context.Flags.NOFAIL, null) < 0)
-			warning( "pa_context_connect() failed: %s\n", PulseAudio.strerror(context.errno()));
-	}
-
-	void sink_info_list_callback_set_mute (PulseAudio.Context context, PulseAudio.SinkInfo? sink, int eol) {
-		if (sink != null)
-			context.set_sink_mute_by_index (sink.index, true, null);
-	}
-
-	void sink_info_list_callback_unset_mute (PulseAudio.Context context, PulseAudio.SinkInfo? sink, int eol) {
-		if (sink != null)
-			context.set_sink_mute_by_index (sink.index, false, null);
-	}
-
-	/* Mute operations */
-	bool set_mute_internal (bool mute)
-	{
-		return_val_if_fail (context.get_state () == Context.State.READY, false);
-
-		if (_mute != mute) {
-			if (mute)
-				context.get_sink_info_list (sink_info_list_callback_set_mute);
-			else
-				context.get_sink_info_list (sink_info_list_callback_unset_mute);
-			return true;
-		} else {
-			return false;
-		}
-	}
-
-	public void set_mute (bool mute)
-	{
-		if (set_mute_internal (mute))
-			sync_mute_to_accountsservice.begin (mute);
-	}
-
-	public void toggle_mute ()
-	{
-		this.set_mute (!this._mute);
-	}
-
-	public bool mute
-	{
-		get
-		{
-			return this._mute;
-		}
-	}
-
-	public bool is_playing
-	{
-		get
-		{
-			return this._is_playing;
-		}
-	}
-
-	/* Volume operations */
-	private static PulseAudio.Volume double_to_volume (double vol)
-	{
-		double tmp = (double)(PulseAudio.Volume.NORM - PulseAudio.Volume.MUTED) * vol;
-		return (PulseAudio.Volume)tmp + PulseAudio.Volume.MUTED;
-	}
-
-	private static double volume_to_double (PulseAudio.Volume vol)
-	{
-		double tmp = (double)(vol - PulseAudio.Volume.MUTED);
-		return tmp / (double)(PulseAudio.Volume.NORM - PulseAudio.Volume.MUTED);
-	}
-
-	private void set_volume_success_cb (Context c, int success)
-	{
-		if ((bool)success)
-			this.notify_property("volume");
-	}
-
-	private void sink_info_set_volume_cb (Context c, SinkInfo? i, int eol)
-	{
-		if (i == null)
-			return;
-
-		unowned CVolume cvol = i.volume;
-		cvol.scale (double_to_volume (_volume));
-		c.set_sink_volume_by_index (i.index, cvol, set_volume_success_cb);
-	}
-
-	private void server_info_cb_for_set_volume (Context c, ServerInfo? i)
-	{
-		if (i == null)
-		{
-			warning ("Could not get PulseAudio server info");
-			return;
-		}
-
-		context.get_sink_info_by_name (i.default_sink_name, sink_info_set_volume_cb);
-	}
-
-	private async void set_volume_active_role ()
-	{
-		string active_role_objp = _objp_role_alert;
-
-		if (_active_sink_input != -1 && _active_sink_input in _sink_input_list)
-			active_role_objp = _sink_input_hash.get (_active_sink_input);
-
-		try {
-			var builder = new VariantBuilder (new VariantType ("a(uu)"));
-			builder.add ("(uu)", 0, double_to_volume (_volume));
-			Variant volume = builder.end ();
-
-			/* Increase the signal counter so we can handle the callback */
-			lock (_pa_volume_sig_count) {
-				_pa_volume_sig_count++;
-			}
-
-			yield _pconn.call ("org.PulseAudio.Ext.StreamRestore1.RestoreEntry",
-					active_role_objp, "org.freedesktop.DBus.Properties", "Set",
-					new Variant ("(ssv)", "org.PulseAudio.Ext.StreamRestore1.RestoreEntry", "Volume", volume),
-					null, DBusCallFlags.NONE, -1);
-
-			this.notify_property("volume");
-		} catch (GLib.Error e) {
-			lock (_pa_volume_sig_count) {
-				_pa_volume_sig_count--;
-			}
-			warning ("unable to set volume for stream obj path %s (%s)", active_role_objp, e.message);
-		}
-	}
-
-	bool set_volume_internal (double volume)
-	{
-		if (context.get_state () != Context.State.READY)
-			return false;
-
-		if (_volume != volume) {
-			var old_high_volume = this.high_volume;
-
-			_volume = volume;
-			if (_pulse_use_stream_restore)
-				set_volume_active_role.begin ();
-			else
-				context.get_server_info (server_info_cb_for_set_volume);
-
-			this.notify_property("volume");
-
-			if (this.high_volume != old_high_volume)
-				this.notify_property("high-volume");
-
-			return true;
-		} else {
-			return false;
-		}
-	}
-
-	void set_mic_volume_success_cb (Context c, int success)
-	{
-		if ((bool)success)
-			this.notify_property ("mic-volume");
-	}
-
-	void set_mic_volume_get_server_info_cb (PulseAudio.Context c, PulseAudio.ServerInfo? i) {
-		if (i != null) {
-			unowned CVolume cvol = CVolume ();
-			cvol = vol_set (cvol, 1, double_to_volume (_mic_volume));
-			c.set_source_volume_by_name (i.default_source_name, cvol, set_mic_volume_success_cb);
-		}
-	}
-
-	public double volume {
-		get {
-			return _volume;
-		}
-		set {
-			if (set_volume_internal (value)) {
-				start_local_volume_timer();
-			}
-		}
-	}
-
-	public double mic_volume {
-		get {
-			return _mic_volume;
-		}
-		set {
-			return_if_fail (context.get_state () == Context.State.READY);
-
-			_mic_volume = value;
-
-			context.get_server_info (set_mic_volume_get_server_info_cb);
-		}
-	}
-
-	/* PulseAudio Dbus (Stream Restore) logic */
-	private void reconnect_pulse_dbus ()
-	{
-		unowned string pulse_dbus_server_env = Environment.get_variable ("PULSE_DBUS_SERVER");
-		string address;
-
-		/* In case of a reconnect */
-		_pulse_use_stream_restore = false;
-		_pa_volume_sig_count = 0;
-
-		if (pulse_dbus_server_env != null) {
-			address = pulse_dbus_server_env;
-		} else {
-			DBusConnection conn;
-			Variant props;
-
-			try {
-				conn = Bus.get_sync (BusType.SESSION);
-			} catch (GLib.IOError e) {
-				warning ("unable to get the dbus session bus: %s", e.message);
-				return;
-			}
-
-			try {
-				var props_variant = conn.call_sync ("org.PulseAudio1",
-						"/org/pulseaudio/server_lookup1", "org.freedesktop.DBus.Properties",
-						"Get", new Variant ("(ss)", "org.PulseAudio.ServerLookup1", "Address"),
-						null, DBusCallFlags.NONE, -1);
-				props_variant.get ("(v)", out props);
-				address = props.get_string ();
-			} catch (GLib.Error e) {
-				warning ("unable to get pulse unix socket: %s", e.message);
-				return;
-			}
-		}
-
-		stdout.printf ("PulseAudio dbus unix socket: %s\n", address);
-		try {
-			_pconn = new DBusConnection.for_address_sync (address, DBusConnectionFlags.AUTHENTICATION_CLIENT);
-		} catch (GLib.Error e) {
-			/* If it fails, it means the dbus pulse extension is not available */
-			return;
-		}
-
-		/* For pulse dbus related events */
-		_pconn.add_filter (pulse_dbus_filter);
-
-		/* Check if the 4 currently supported media roles are already available in StreamRestore
-		 * Roles: multimedia, alert, alarm and phone */
-		_objp_role_multimedia = stream_restore_get_object_path ("sink-input-by-media-role:multimedia");
-		_objp_role_alert = stream_restore_get_object_path ("sink-input-by-media-role:alert");
-		_objp_role_alarm = stream_restore_get_object_path ("sink-input-by-media-role:alarm");
-		_objp_role_phone = stream_restore_get_object_path ("sink-input-by-media-role:phone");
-
-		/* Only use stream restore if every used role is available */
-		if (_objp_role_multimedia != null && _objp_role_alert != null && _objp_role_alarm != null && _objp_role_phone != null) {
-			stdout.printf ("Using PulseAudio DBUS Stream Restore module\n");
-			/* Restore volume and update default entry */
-			update_active_sink_input.begin (-1);
-			_pulse_use_stream_restore = true;
-		}
-	}
-
-	private string? stream_restore_get_object_path (string name) {
-		string? objp = null;
-		try {
-			Variant props_variant = _pconn.call_sync ("org.PulseAudio.Ext.StreamRestore1",
-					"/org/pulseaudio/stream_restore1", "org.PulseAudio.Ext.StreamRestore1",
-					"GetEntryByName", new Variant ("(s)", name), null, DBusCallFlags.NONE, -1);
-			/* Workaround for older versions of vala that don't provide get_objv */
-			VariantIter iter = props_variant.iterator ();
-			iter.next ("o", &objp);
-			stdout.printf ("Found obj path %s for restore data named %s\n", objp, name);
-		} catch (GLib.Error e) {
-			warning ("unable to find stream restore data for: %s", name);
-		}
-		return objp;
-	}
-
-	/* AccountsService operations */
-	private void accountsservice_props_changed_cb (DBusProxy proxy, Variant changed_properties, string[]? invalidated_properties)
-	{
-		Variant volume_variant = changed_properties.lookup_value ("Volume", new VariantType ("d"));
-		if (volume_variant != null) {
-			var volume = volume_variant.get_double ();
-			if (volume >= 0) {
-				_account_service_volume = volume;
-				// we need to wait for this to settle.
-				start_account_service_volume_timer();
-			}
-		}
-
-		Variant mute_variant = changed_properties.lookup_value ("Muted", new VariantType ("b"));
-		if (mute_variant != null) {
-			var mute = mute_variant.get_boolean ();
-			set_mute_internal (mute);
-		}
-	}
-
-	private async void setup_user_proxy (string? username_in = null)
-	{
-		var username = username_in;
-		_user_proxy = null;
-
-		// Look up currently selected greeter user, if asked
-		if (username == null) {
-			try {
-				username = yield _greeter_proxy.get_active_entry ();
-				if (username == "" || username == null)
-					return;
-			} catch (GLib.Error e) {
-				warning ("unable to find Accounts path for user %s: %s", username, e.message);
-				return;
-			}
-		}
-
-		// Get master AccountsService object
-		DBusProxy accounts_proxy;
-		try {
-			accounts_proxy = yield DBusProxy.create_for_bus (BusType.SYSTEM, DBusProxyFlags.DO_NOT_LOAD_PROPERTIES | DBusProxyFlags.DO_NOT_CONNECT_SIGNALS, null, "org.freedesktop.Accounts", "/org/freedesktop/Accounts", "org.freedesktop.Accounts");
-		} catch (GLib.Error e) {
-			warning ("unable to get greeter proxy: %s", e.message);
-			return;
-		}
-
-		// Find user's AccountsService object
-		try {
-			var user_path_variant = yield accounts_proxy.call ("FindUserByName", new Variant ("(s)", username), DBusCallFlags.NONE, -1);
-			string user_path;
-			user_path_variant.get ("(o)", out user_path);
-			_user_proxy = yield DBusProxy.create_for_bus (BusType.SYSTEM, DBusProxyFlags.GET_INVALIDATED_PROPERTIES, null, "org.freedesktop.Accounts", user_path, "com.ubuntu.AccountsService.Sound");
-		} catch (GLib.Error e) {
-			warning ("unable to find Accounts path for user %s: %s", username, e.message);
-			return;
-		}
-
-		// Get current values and listen for changes
-		_user_proxy.g_properties_changed.connect (accountsservice_props_changed_cb);
-		try {
-			var props_variant = yield _user_proxy.get_connection ().call (_user_proxy.get_name (), _user_proxy.get_object_path (), "org.freedesktop.DBus.Properties", "GetAll", new Variant ("(s)", _user_proxy.get_interface_name ()), null, DBusCallFlags.NONE, -1);
-			Variant props;
-			props_variant.get ("(@a{sv})", out props);
-			accountsservice_props_changed_cb(_user_proxy, props, null);
-		} catch (GLib.Error e) {
-			debug("Unable to get properties for user %s at first try: %s", username, e.message);
-		}
-	}
-
-	private void greeter_user_changed (string username)
-	{
-		setup_user_proxy.begin (username);
-	}
-
-	private async void setup_accountsservice ()
-	{
-		if (Environment.get_variable ("XDG_SESSION_CLASS") == "greeter") {
-			try {
-				_greeter_proxy = yield Bus.get_proxy (BusType.SESSION, "com.canonical.UnityGreeter", "/list");
-			} catch (GLib.Error e) {
-				warning ("unable to get greeter proxy: %s", e.message);
-				return;
-			}
-			_greeter_proxy.entry_selected.connect (greeter_user_changed);
-			yield setup_user_proxy ();
-		} else {
-			// We are in a user session.  We just need our own proxy
-			var username = Environment.get_variable ("USER");
-			if (username != "" && username != null) {
-				yield setup_user_proxy (username);
-			}
-		}
-	}
-
-	private async void sync_mute_to_accountsservice (bool mute)
-	{
-		if (_user_proxy == null)
-			return;
-
-		_mute_cancellable.cancel ();
-		_mute_cancellable.reset ();
-
-		try {
-			yield _user_proxy.get_connection ().call (_user_proxy.get_name (), _user_proxy.get_object_path (), "org.freedesktop.DBus.Properties", "Set", new Variant ("(ssv)", _user_proxy.get_interface_name (), "Muted", new Variant ("b", mute)), null, DBusCallFlags.NONE, -1, _mute_cancellable);
-		} catch (GLib.Error e) {
-			warning ("unable to sync mute to AccountsService: %s", e.message);
-		}
-	}
-
-	private async void sync_volume_to_accountsservice (double volume)
-	{
-		if (_user_proxy == null)
-			return;
-
-		_volume_cancellable.cancel ();
-		_volume_cancellable.reset ();
-
-		try {
-			yield _user_proxy.get_connection ().call (_user_proxy.get_name (), _user_proxy.get_object_path (), "org.freedesktop.DBus.Properties", "Set", new Variant ("(ssv)", _user_proxy.get_interface_name (), "Volume", new Variant ("d", volume)), null, DBusCallFlags.NONE, -1, _volume_cancellable);
-		} catch (GLib.Error e) {
-			warning ("unable to sync volume to AccountsService: %s", e.message);
-		}
-	}
-
-	private void start_local_volume_timer()
-	{
-		// perform a slow sync with the accounts service. max at 1 per second.
-
-		// stop the AS update timer, as since we're going to be setting the volume.
-		stop_account_service_volume_timer();
-
-		if (_local_volume_timer == 0) {
-			sync_volume_to_accountsservice.begin (_volume);
-			_local_volume_timer = Timeout.add_seconds (1, local_volume_changed_timeout);
-		} else {
-			_send_next_local_volume = true;
-		}
-	}
-
-	private void stop_local_volume_timer()
-	{
-		if (_local_volume_timer != 0) {
-			Source.remove (_local_volume_timer);
-			_local_volume_timer = 0;
-		}
-	}
-
-	bool local_volume_changed_timeout()
-	{
-		_local_volume_timer = 0;
-		if (_send_next_local_volume) {
-			_send_next_local_volume = false;
-			start_local_volume_timer ();
-		}
-		return false; // G_SOURCE_REMOVE
-	}
-
-	private void start_account_service_volume_timer()
-	{
-		if (_accountservice_volume_timer == 0) {
-			// If we haven't been messing with local volume recently, apply immediately.
-			if (_local_volume_timer == 0 && !set_volume_internal (_account_service_volume)) {
-				return;
-			}
-			// Else check again in another second if needed.
-			// (if AS is throwing us lots of notifications, we update at most once a second)
-			_accountservice_volume_timer = Timeout.add_seconds (1, accountservice_volume_changed_timeout);
-		}
-	}
-
-	private void stop_account_service_volume_timer()
-	{
-		if (_accountservice_volume_timer != 0) {
-			Source.remove (_accountservice_volume_timer);
-			_accountservice_volume_timer = 0;
-		}
-	}
-
-	bool accountservice_volume_changed_timeout ()
-	{
-		_accountservice_volume_timer = 0;
-		start_account_service_volume_timer ();
-		return false; // G_SOURCE_REMOVE
-	}
+	public virtual string stream { get { return ""; } }
+	public virtual bool ready { get { return false; } set { } }
+	public virtual bool active_mic { get { return false; } set { } }
+	public virtual bool high_volume { get { return false; } }
+	public virtual bool mute { get { return false; } }
+	public virtual bool is_playing { get { return false; } }
+	public virtual double volume { get { return 0.0; } set { } }
+	public virtual double mic_volume { get { return 0.0; } set { } }
+
+	public abstract void set_mute (bool mute);
 }