1 /* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
7 interface AudioChannelManager : EventTarget {
9 * Indicates whether the headphones are plugged in or not.
11 readonly attribute boolean headphones;
14 * Fired when the headphones are plugged or unplugged.
16 * When the headphones are unplugged, we may start playing audio through the
17 * system's speakers. Similarly, when headphones are plugged in, we may
18 * switch audio from speakers to headphones.
20 * If audio is currently playing in this window or in one of its children, we
21 * will fire this event before we switch the audio output from headphones to
22 * speakers (or vice versa). This allows you to, for example, pause your
23 * window's audio when the headphones are unplugged.
25 attribute EventHandler onheadphoneschange;
28 * Indicates which audio channel is used to adjust volume when pressing HW
31 attribute DOMString volumeControlChannel;