gecko-dev/webapprt/WebRTCHandler.jsm

113 lines
3.1 KiB
JavaScript

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