зеркало из https://github.com/mozilla/gecko-dev.git
113 строки
3.1 KiB
JavaScript
113 строки
3.1 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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this.EXPORTED_SYMBOLS = [];
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let Cc = Components.classes;
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let Ci = Components.interfaces;
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let Cu = Components.utils;
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Cu.import("resource://gre/modules/Services.jsm");
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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function handlePCRequest(aSubject, aTopic, aData) {
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aSubject = aSubject.wrappedJSObject;
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let { windowID, innerWindowID, callID, isSecure } = aSubject;
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let contentWindow = Services.wm.getOuterWindowWithId(windowID);
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Services.obs.notifyObservers(null, "PeerConnection:response:allow", callID);
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}
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function handleGumRequest(aSubject, aTopic, aData) {
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let { windowID, callID } = aSubject;
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let constraints = aSubject.getConstraints();
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let contentWindow = Services.wm.getOuterWindowWithId(windowID);
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contentWindow.navigator.mozGetUserMediaDevices(
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constraints,
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function (devices) {
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prompt(contentWindow, callID, constraints.audio,
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constraints.video || constraints.picture,
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devices);
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},
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function (error) {
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denyRequest(callID, error);
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});
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}
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function prompt(aWindow, aCallID, aAudioRequested, aVideoRequested, aDevices) {
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let audioDevices = [];
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let videoDevices = [];
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for (let device of aDevices) {
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device = device.QueryInterface(Ci.nsIMediaDevice);
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switch (device.type) {
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case "audio":
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if (aAudioRequested) {
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audioDevices.push(device);
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}
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break;
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case "video":
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if (aVideoRequested) {
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videoDevices.push(device);
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}
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break;
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}
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}
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if (audioDevices.length == 0 && videoDevices.length == 0) {
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denyRequest(aCallID);
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return;
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}
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let params = {
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videoDevices: videoDevices,
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audioDevices: audioDevices,
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out: null
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};
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aWindow.openDialog("chrome://webapprt/content/getUserMediaDialog.xul", "",
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"chrome, dialog, modal", params).focus();
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if (!params.out) {
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denyRequest(aCallID);
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return;
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}
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let allowedDevices = Cc["@mozilla.org/supports-array;1"].
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createInstance(Ci.nsISupportsArray);
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let videoIndex = params.out.video;
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let audioIndex = params.out.audio;
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if (videoIndex != -1) {
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allowedDevices.AppendElement(videoDevices[videoIndex]);
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}
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if (audioIndex != -1) {
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allowedDevices.AppendElement(audioDevices[audioIndex]);
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}
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if (allowedDevices.Count()) {
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Services.obs.notifyObservers(allowedDevices, "getUserMedia:response:allow",
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aCallID);
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} else {
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denyRequest(aCallID);
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}
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}
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function denyRequest(aCallID, aError) {
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let msg = null;
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if (aError) {
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msg = Cc["@mozilla.org/supports-string;1"].
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createInstance(Ci.nsISupportsString);
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msg.data = aError;
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}
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Services.obs.notifyObservers(msg, "getUserMedia:response:deny", aCallID);
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}
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Services.obs.addObserver(handleGumRequest, "getUserMedia:request", false);
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Services.obs.addObserver(handlePCRequest, "PeerConnection:request", false);
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