Warn on high audio levels when using headphones Fixes: 1373404

Approved by: Mirco Müller

3 files changed, 126 insertions, 16 deletions

diff --git a/src/service.vala b/src/service.vala
index 4e02769..bd44b0d 100644
--- a/src/service.vala
+++ b/src/service.vala
@@ -36,6 +36,7 @@ public class IndicatorSound.Service: Object {
 		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.actions.add_action (this.create_high_volume_actions ());
 
 		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));
@@ -47,6 +48,10 @@ public class IndicatorSound.Service: Object {
 			this.volume_control.bind_property ("active-mic", menu, "show-mic-volume", BindingFlags.SYNC_CREATE);
 		});
 
+		this.menus.@foreach ( (profile, menu) => {
+			this.volume_control.bind_property ("high-volume", menu, "show-high-volume-warning", BindingFlags.SYNC_CREATE);
+		});
+
 		/* Setup handling for the greeter-export setting */
 		this.settings.changed["greeter-export"].connect( () => this.build_accountsservice() );
 		build_accountsservice();
@@ -181,6 +186,8 @@ public class IndicatorSound.Service: Object {
 		double v = this.volume_control.get_volume () + volume_step_percentage * delta;
 		this.volume_control.set_volume (v.clamp (0.0, this.max_volume));
 
+		/* TODO: Don't want to mess up the desktop today, but we should remove this
+		   scrolling change and merge that into volume control's notification */
 		if (this.notification != null) {
 			string icon;
 			if (v <= 0.0)
@@ -365,6 +372,15 @@ public class IndicatorSound.Service: Object {
 		return volume_action;
 	}
 
+	Action create_high_volume_actions () {
+		var 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)));
+
+		return high_volume_action;
+	}
+
 	void bus_acquired (DBusConnection connection, string name) {
 		try {
 			connection.export_action_group ("/com/canonical/indicator/sound", this.actions);
diff --git a/src/sound-menu.vala b/src/sound-menu.vala
index 03faa89..b93c513 100644
--- a/src/sound-menu.vala
+++ b/src/sound-menu.vala
@@ -82,12 +82,50 @@ public class SoundMenu: Object
 				this.mic_volume_shown = true;
 			}
 			else if (!value && this.mic_volume_shown) {
-				this.volume_section.remove (this.volume_section.get_n_items () -1);
+				int location = -1;
+				while ((location = find_action(this.volume_section, "indicator.mic-volume")) != -1) {
+					this.volume_section.remove (location);
+				}
 				this.mic_volume_shown = false;
 			}
 		}
 	}
 
+	public bool show_high_volume_warning {
+		get {
+			return this.high_volume_warning_shown;
+		}
+		set {
+			if (value && !this.high_volume_warning_shown) {
+				/* NOTE: Action doesn't really exist, just used to find below when removing */
+				var item = new MenuItem(_("High volume can damage your hearing."), "indicator.high-volume-warning-item");
+				volume_section.append_item (item);
+				this.high_volume_warning_shown = true;
+			}
+			else if (!value && this.high_volume_warning_shown) {
+				int location = -1;
+				while ((location = find_action(this.volume_section, "indicator.high-volume-warning-item")) != -1) {
+					this.volume_section.remove (location);
+				}
+				this.volume_section.remove (this.volume_section.get_n_items () -1);
+				this.high_volume_warning_shown = false;
+			}
+		}
+	}
+
+	int find_action (Menu menu, string in_action) {
+		int n = menu.get_n_items ();
+		for (int i = 0; i < n; i++) {
+			string action;
+			menu.get_item_attribute (0, "action", "s", out action);
+			if (in_action == action)
+				return i;
+		}
+
+		return -1;
+	}
+
+
 	public void add_player (MediaPlayer player) {
 		if (this.notify_handlers.contains (player))
 			return;
@@ -130,6 +168,7 @@ public class SoundMenu: Object
 	Menu volume_section;
 	bool mic_volume_shown;
 	bool settings_shown = false;
+	bool high_volume_warning_shown = false;
 	bool hide_inactive;
 	bool hide_players = false;
 	HashTable<MediaPlayer, ulong> notify_handlers;
diff --git a/src/volume-control.vala b/src/volume-control.vala
index 0541397..9114d01 100644
--- a/src/volume-control.vala
+++ b/src/volume-control.vala
@@ -70,6 +70,8 @@ public class VolumeControl : Object
 	private double _account_service_volume = 0.0;
 	private Notify.Notification _notification;
 
+	private bool _active_port_headphone = false;
+
 	public signal void volume_changed (double v);
 	public signal void mic_volume_changed (double v);
 
@@ -79,6 +81,9 @@ public class VolumeControl : Object
 	/** 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; set; }
+
 	public VolumeControl ()
 	{
 		if (loop == null)
@@ -158,6 +163,8 @@ public class VolumeControl : Object
 
 	private void sink_info_cb_for_props (Context c, SinkInfo? i, int eol)
 	{
+		bool old_active_port_headphone = this._active_port_headphone;
+
 		if (i == null)
 			return;
 
@@ -174,11 +181,27 @@ public class VolumeControl : Object
 			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.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 ());
 			volume_changed (_volume);
+			start_local_volume_timer();
+		} else if (this._active_port_headphone != old_active_port_headphone) {
+			volume_changed (_volume);
 		}
 	}
 
@@ -247,6 +270,7 @@ public class VolumeControl : Object
 						/* Someone else changed the volume for this role, reflect on the indicator */
 						_volume = volume_to_double (volume);
 						volume_changed (_volume);
+						start_local_volume_timer();
 					}
 				}
 			}
@@ -289,6 +313,7 @@ public class VolumeControl : Object
 
 				_volume = volume_to_double (volume);
 				volume_changed (_volume);
+				start_local_volume_timer();
 			} catch (GLib.Error e) {
 				warning ("unable to get volume for active role %s (%s)", sink_input_objp, e.message);
 			}
@@ -579,22 +604,52 @@ public class VolumeControl : Object
 	{
 		/* Using this to detect whether we're on the phone or not */
 		if (_pulse_use_stream_restore) {
-			if (volume == 0.0)
-				_notification.update (_("Volume"), "", "audio-volume-muted");
-			if (volume > 0.0 && volume <= 0.33)
-				_notification.update (_("Volume"), "", "audio-volume-low");
-			if (volume > 0.33 && volume <= 0.66)
-				_notification.update (_("Volume"), "", "audio-volume-medium");
-			if (volume > 0.66 && volume <= 1.0)
-				_notification.update (_("Volume"), "", "audio-volume-high");
+			/* Watch for extreme */
+			if (volume > 0.75 && _active_port_headphone)
+				high_volume = true;
+			else
+				high_volume = false;
+
+			/* Determine Label */
+			string volume_label = "";
+			if (high_volume)
+				volume_label = _("High volume");
+
+			/* Choose an icon */
+			string icon = "audio-volume-muted";
+			if (volume <= 0.0)
+				icon = "audio-volume-muted";
+			else if (volume <= 0.3)
+				icon = "audio-volume-low";
+			else if (volume <= 0.7)
+				icon = "audio-volume-medium";
+			else
+				icon = "audio-volume-high";
+
+			/* Choose a sound */
+			string? sound = null;
+			if (!((_active_sink_input >= 0) && (_active_sink_input < _valid_roles.length)
+					&& (_valid_roles[_active_sink_input] == "multimedia")))
+				sound = "/usr/share/sounds/ubuntu/stereo/message.ogg";
+
+			/* Check tint */
+			string tint = "false";
+			if (high_volume)
+				tint = "true";
+
+			/* Put it all into the notification */
+			_notification.clear_hints ();
+			_notification.update (_("Volume"), volume_label, icon);
 			_notification.set_hint ("value", (int32)(volume * 100.0));
-			if (_active_sink_input == -1 || _valid_roles[_active_sink_input] != "multimedia") {
-				/* No audio ping if we're playing multimedia */
-				_notification.set_hint ("sound-file", "/usr/share/sounds/ubuntu/stereo/message.ogg");
-			} else {
-				_notification.set_hint ("sound-file", null);
-			}
-
+			/* TODO: Removing sound until we can get all the roles cleaned up for
+			   when to play it. We expect this to come back, but in another landing.
+			_notification.set_hint ("sound-file", sound);
+			 */
+			_notification.set_hint ("x-canonical-value-bar-tint", tint);
+			_notification.set_hint ("x-canonical-private-synchronous", "true");
+			_notification.set_hint ("x-canonical-non-shaped-icon", "true");
+
+			/* Show it */
 			try {
 				_notification.show ();			
 			} catch (GLib.Error e) {