Putting an interface in for volume control

1 files changed, 0 insertions, 917 deletions

diff --git a/src/volume-control.vala b/src/volume-control.vala
deleted file mode 100644
index 62cb2d0..0000000
--- a/src/volume-control.vala
+++ /dev/null
@@ -1,917 +0,0 @@
-/*
- * -*- 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 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
-	}
-}