aboutsummaryrefslogtreecommitdiff
path: root/src/service.vala
blob: 970867f3f9169b731753a483ea3b64f7e54864e9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
/*
 * 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:
 *      Lars Uebernickel <lars.uebernickel@canonical.com>
 */

public class IndicatorSound.Service: Object {
	public Service () {
		this.settings = new Settings ("com.canonical.indicator.sound");
		this.sharedsettings = new Settings ("com.ubuntu.sound");

		this.settings.bind ("visible", this, "visible", SettingsBindFlags.GET);
		this.notify["visible"].connect ( () => this.update_root_icon () );

		this.volume_control = new VolumeControl ();

		this.players = new MediaPlayerList ();
		this.players.player_added.connect (this.player_added);
		this.players.player_removed.connect (this.player_removed);

		this.actions = new SimpleActionGroup ();
		this.actions.add_action_entries (action_entries, this);
		this.actions.add_action (this.create_mute_action ());
		this.actions.add_action (this.create_volume_action ());
		this.actions.add_action (this.create_mic_volume_action ());

		this.menus = new HashTable<string, SoundMenu> (str_hash, str_equal);
		this.menus.insert ("desktop_greeter", new SoundMenu (null, SoundMenu.DisplayFlags.SHOW_MUTE | SoundMenu.DisplayFlags.HIDE_PLAYERS));
		this.menus.insert ("desktop", new SoundMenu ("indicator.desktop-settings", SoundMenu.DisplayFlags.SHOW_MUTE));
		this.menus.insert ("phone", new SoundMenu ("indicator.phone-settings", SoundMenu.DisplayFlags.HIDE_INACTIVE_PLAYERS));

		this.menus.@foreach ( (profile, menu) => {
			this.volume_control.bind_property ("active-mic", menu, "show-mic-volume", BindingFlags.SYNC_CREATE);
		});

		this.sync_preferred_players ();
		this.settings.changed["interested-media-players"].connect ( () => {
			this.sync_preferred_players ();
		});

		if (settings.get_boolean ("show-notify-osd-on-scroll")) {
			List<string> caps = Notify.get_server_caps ();
			if (caps.find_custom ("x-canonical-private-synchronous", strcmp) != null) {
				this.notification = new Notify.Notification ("indicator-sound", "", "");
				this.notification.set_hint_string ("x-canonical-private-synchronous", "indicator-sound");
			}
		}

		sharedsettings.bind ("allow-amplified-volume", this, "allow-amplified-volume", SettingsBindFlags.GET);
	}

	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);
		this.loop.run ();

		return 0;
	}

	public bool visible { get; set; }

	public bool allow_amplified_volume {
		get {
			return this.max_volume > 1.0;
		}

		set {
			if (value) {
				/* from pulse/volume.h: #define PA_VOLUME_UI_MAX (pa_sw_volume_from_dB(+11.0)) */
				this.max_volume = (double)PulseAudio.Volume.sw_from_dB(11.0) / PulseAudio.Volume.NORM;
			}
			else {
				this.max_volume = 1.0;
			}

			/* Normalize volume, because the volume action's state is [0.0, 1.0], see create_volume_action() */
			this.actions.change_action_state ("volume", this.volume_control.get_volume () / this.max_volume);
		}
	}

	const ActionEntry[] action_entries = {
		{ "root", null, null, "@a{sv} {}", null },
		{ "scroll", activate_scroll_action, "i", null, null },
		{ "desktop-settings", activate_desktop_settings, null, null, null },
		{ "phone-settings", activate_phone_settings, null, null, null },
	};

	MainLoop loop;
	SimpleActionGroup actions;
	HashTable<string, SoundMenu> menus;
	Settings settings;
	Settings sharedsettings;
	VolumeControl volume_control;
	MediaPlayerList players;
	uint player_action_update_id;
	Notify.Notification notification;
	bool syncing_preferred_players = false;

	/* Maximum volume as a scaling factor between the volume action's state and the value in
	 * this.volume_control. See create_volume_action().
	 */
	double max_volume = 1.0;

	const double volume_step_percentage = 0.06;

	void activate_scroll_action (SimpleAction action, Variant? param) {
		int delta = param.get_int32(); /* positive for up, negative for down */

		double v = this.volume_control.get_volume () + volume_step_percentage * delta;
		this.volume_control.set_volume (v.clamp (0.0, this.max_volume));

		if (this.notification != null) {
			string icon;
			if (v <= 0.0)
				icon = "notification-audio-volume-off";
			else if (v <= 0.3)
				icon = "notification-audio-volume-low";
			else if (v <= 0.7)
				icon = "notification-audio-volume-medium";
			else
				icon = "notification-audio-volume-high";

			this.notification.update ("indicator-sound", "", icon);
			this.notification.set_hint_int32 ("value", ((int32) (100 * v)).clamp (-1, 101));
			try {
				this.notification.show ();
			}
			catch (Error e) {
				warning ("unable to show notification: %s", e.message);
			}
		}
	}

	void activate_desktop_settings (SimpleAction action, Variant? param) {
		var env = Environment.get_variable ("DESKTOP_SESSION");
		string cmd;
		if (env == "xubuntu" || env == "ubuntustudio")
			cmd = "pavucontrol";
		else
		{
			if (Environment.get_variable ("XDG_CURRENT_DESKTOP") == "Unity" && Environment.find_program_in_path ("unity-control-center") != null)
				cmd = "unity-control-center sound";
			else
				cmd = "gnome-control-center sound";
		}

		try {
			Process.spawn_command_line_async (cmd);
		} catch (Error e) {
			warning ("unable to launch sound settings: %s", e.message);
		}
	}

	void activate_phone_settings (SimpleAction action, Variant? param) {
		UrlDispatch.send ("settings:///system/sound");
	}

	/* Returns a serialized version of @icon_name suited for the panel */
	static Variant serialize_themed_icon (string icon_name)
	{
		var icon = new ThemedIcon.with_default_fallbacks (icon_name);
		return icon.serialize ();
	}

	void update_root_icon () {
		double volume = this.volume_control.get_volume ();
		string icon;
		if (this.volume_control.mute)
			icon = "audio-volume-muted-panel";
		else if (volume <= 0.0)
			icon = "audio-volume-low-zero-panel";
		else if (volume <= 0.3)
			icon = "audio-volume-low-panel";
		else if (volume <= 0.7)
			icon = "audio-volume-medium-panel";
		else
			icon  = "audio-volume-high-panel";

		string accessible_name;
		if (this.volume_control.mute) {
			accessible_name = _("Volume (muted)");
		} else {
			int volume_int = (int)(volume * 100);
			accessible_name = "%s (%d%%)".printf (_("Volume"), volume_int);
		}

		var root_action = actions.lookup_action ("root") as SimpleAction;
		var builder = new VariantBuilder (new VariantType ("a{sv}"));
		builder.add ("{sv}", "title", new Variant.string (_("Sound")));
		builder.add ("{sv}", "accessible-desc", new Variant.string (accessible_name));
		builder.add ("{sv}", "icon", serialize_themed_icon (icon));
		builder.add ("{sv}", "visible", new Variant.boolean (this.visible));
		root_action.set_state (builder.end());
	}

	Action create_mute_action () {
		var 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 ()));
		});

		mute_action.change_state.connect ( (action, val) => {
			volume_control.set_mute (val.get_boolean ());
		});

		this.volume_control.notify["mute"].connect ( () => {
			mute_action.set_state (new Variant.boolean (this.volume_control.mute));
			this.update_root_icon ();
		});

		return mute_action;
	}

	void volume_changed (double volume) {
		var volume_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() */
		volume_action.set_state (new Variant.double (volume / this.max_volume));

		this.update_root_icon ();
	}

	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
		 * every time allow-amplified-volume is changed.  Convert between the
		 * two here, so that we always pass the full range into
		 * volume_control.set_volume().
		 */

		double volume = this.volume_control.get_volume () / this.max_volume;

		var 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;
			volume_control.set_volume (v.clamp (0.0, this.max_volume));
		});

		/* activating this action changes the volume by the amount given in the parameter */
		volume_action.activate.connect ( (action, param) => {
			int delta = param.get_int32 ();
			double v = volume_control.get_volume () + volume_step_percentage * delta;
			volume_control.set_volume (v.clamp (0.0, this.max_volume));
		});

		this.volume_control.volume_changed.connect (volume_changed);

		this.volume_control.bind_property ("ready", volume_action, "enabled", BindingFlags.SYNC_CREATE);

		return volume_action;
	}

	Action create_mic_volume_action () {
		var volume_action = new SimpleAction.stateful ("mic-volume", null, new Variant.double (this.volume_control.get_mic_volume ()));

		volume_action.change_state.connect ( (action, val) => {
			volume_control.set_mic_volume (val.get_double ());
		});

		this.volume_control.mic_volume_changed.connect ( (volume) => {
			volume_action.set_state (new Variant.double (volume));
		});

		this.volume_control.bind_property ("ready", volume_action, "enabled", BindingFlags.SYNC_CREATE);

		return 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 ();
	}

	Variant action_state_for_player (MediaPlayer player) {
		var builder = new VariantBuilder (new VariantType ("a{sv}"));
		builder.add ("{sv}", "running", new Variant ("b", player.is_running));
		builder.add ("{sv}", "state", new Variant ("s", player.state));
		if (player.current_track != null) {
			builder.add ("{sv}", "title", new Variant ("s", player.current_track.title));
			builder.add ("{sv}", "artist", new Variant ("s", player.current_track.artist));
			builder.add ("{sv}", "album", new Variant ("s", player.current_track.album));
			builder.add ("{sv}", "art-url", new Variant ("s", player.current_track.art_url));
		}
		return builder.end ();
	}

	bool update_player_actions () {
		foreach (var player in this.players) {
			SimpleAction? action = this.actions.lookup_action (player.id) as SimpleAction;
			if (action != null) {
				action.set_state (this.action_state_for_player (player));
				action.set_enabled (player.can_raise);
			}
		}

		this.player_action_update_id = 0;
		return false;
	}

	void eventually_update_player_actions () {
		if (player_action_update_id == 0)
			this.player_action_update_id = Idle.add (this.update_player_actions);
	}


	void sync_preferred_players () {
		this.syncing_preferred_players = true;
		this.players.sync (settings.get_strv ("interested-media-players"));
		this.syncing_preferred_players = false;
	}

	void update_preferred_players () {
		/* only write the key if we're not getting this call because we're syncing from the key right now */
		if (!this.syncing_preferred_players) {
			var builder = new VariantBuilder (VariantType.STRING_ARRAY);
			foreach (var player in this.players)
				builder.add ("s", player.id);
			this.settings.set_value ("interested-media-players", builder.end ());
		}
	}

	void player_added (MediaPlayer player) {
		this.menus.@foreach ( (profile, menu) => menu.add_player (player));

		SimpleAction action = new SimpleAction.stateful (player.id, null, this.action_state_for_player (player));
		action.activate.connect ( () => { player.activate (); });
		this.actions.add_action (action);

		var play_action = new SimpleAction.stateful ("play." + player.id, null, player.state);
		play_action.activate.connect ( () => player.play_pause () );
		this.actions.add_action (play_action);
		player.notify.connect ( (object, pspec) => {
			if (pspec.name == "state")
				play_action.set_state (player.state);
		});

		var next_action = new SimpleAction ("next." + player.id, null);
		next_action.activate.connect ( () => player.next () );
		this.actions.add_action (next_action);

		var prev_action = new SimpleAction ("previous." + player.id, null);
		prev_action.activate.connect ( () => player.previous () );
		this.actions.add_action (prev_action);

		var playlist_action = new SimpleAction ("play-playlist." + player.id, VariantType.STRING);
		playlist_action.activate.connect ( (parameter) => player.activate_playlist_by_name (parameter.get_string ()) );
		this.actions.add_action (playlist_action);

		player.notify.connect (this.eventually_update_player_actions);

		this.update_preferred_players ();
	}

	void player_removed (MediaPlayer player) {
		this.actions.remove_action (player.id);
		this.actions.remove_action ("play." + player.id);
		this.actions.remove_action ("next." + player.id);
		this.actions.remove_action ("previous." + player.id);
		this.actions.remove_action ("play-playlist." + player.id);

		this.menus.@foreach ( (profile, menu) => menu.remove_player (player));

		this.update_preferred_players ();
	}
}