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+/*
+ * -*- 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
+ }
+}