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adapter.screenshare.js
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adapter.screenshare.js
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/*! adapterjs - v0.13.4 - 2016-09-22 */
// Adapter's interface.
var AdapterJS = AdapterJS || {};
// Browserify compatibility
if(typeof exports !== 'undefined') {
module.exports = AdapterJS;
}
AdapterJS.options = AdapterJS.options || {};
// uncomment to get virtual webcams
// AdapterJS.options.getAllCams = true;
// uncomment to prevent the install prompt when the plugin in not yet installed
// AdapterJS.options.hidePluginInstallPrompt = true;
// AdapterJS version
AdapterJS.VERSION = '0.13.4';
// This function will be called when the WebRTC API is ready to be used
// Whether it is the native implementation (Chrome, Firefox, Opera) or
// the plugin
// You may Override this function to synchronise the start of your application
// with the WebRTC API being ready.
// If you decide not to override use this synchronisation, it may result in
// an extensive CPU usage on the plugin start (once per tab loaded)
// Params:
// - isUsingPlugin: true is the WebRTC plugin is being used, false otherwise
//
AdapterJS.onwebrtcready = AdapterJS.onwebrtcready || function(isUsingPlugin) {
// The WebRTC API is ready.
// Override me and do whatever you want here
};
// New interface to store multiple callbacks, private
AdapterJS._onwebrtcreadies = [];
// Sets a callback function to be called when the WebRTC interface is ready.
// The first argument is the function to callback.\
// Throws an error if the first argument is not a function
AdapterJS.webRTCReady = function (callback) {
if (typeof callback !== 'function') {
throw new Error('Callback provided is not a function');
}
if (true === AdapterJS.onwebrtcreadyDone) {
// All WebRTC interfaces are ready, just call the callback
callback(null !== AdapterJS.WebRTCPlugin.plugin);
} else {
// will be triggered automatically when your browser/plugin is ready.
AdapterJS._onwebrtcreadies.push(callback);
}
};
// Plugin namespace
AdapterJS.WebRTCPlugin = AdapterJS.WebRTCPlugin || {};
// The object to store plugin information
/* jshint ignore:start */
AdapterJS.WebRTCPlugin.pluginInfo = AdapterJS.WebRTCPlugin.pluginInfo || {
prefix : 'Tem',
plugName : 'TemWebRTCPlugin',
pluginId : 'plugin0',
type : 'application/x-temwebrtcplugin',
onload : '__TemWebRTCReady0',
portalLink : 'http://skylink.io/plugin/',
downloadLink : null, //set below
companyName: 'Temasys',
downloadLinks : {
mac: 'http://bit.ly/1n77hco',
win: 'http://bit.ly/1kkS4FN'
}
};
if(typeof AdapterJS.WebRTCPlugin.pluginInfo.downloadLinks !== "undefined" && AdapterJS.WebRTCPlugin.pluginInfo.downloadLinks !== null) {
if(!!navigator.platform.match(/^Mac/i)) {
AdapterJS.WebRTCPlugin.pluginInfo.downloadLink = AdapterJS.WebRTCPlugin.pluginInfo.downloadLinks.mac;
}
else if(!!navigator.platform.match(/^Win/i)) {
AdapterJS.WebRTCPlugin.pluginInfo.downloadLink = AdapterJS.WebRTCPlugin.pluginInfo.downloadLinks.win;
}
}
/* jshint ignore:end */
AdapterJS.WebRTCPlugin.TAGS = {
NONE : 'none',
AUDIO : 'audio',
VIDEO : 'video'
};
// Unique identifier of each opened page
AdapterJS.WebRTCPlugin.pageId = Math.random().toString(36).slice(2);
// Use this whenever you want to call the plugin.
AdapterJS.WebRTCPlugin.plugin = null;
// Set log level for the plugin once it is ready.
// The different values are
// This is an asynchronous function that will run when the plugin is ready
AdapterJS.WebRTCPlugin.setLogLevel = null;
// Defines webrtc's JS interface according to the plugin's implementation.
// Define plugin Browsers as WebRTC Interface.
AdapterJS.WebRTCPlugin.defineWebRTCInterface = null;
// This function detects whether or not a plugin is installed.
// Checks if Not IE (firefox, for example), else if it's IE,
// we're running IE and do something. If not it is not supported.
AdapterJS.WebRTCPlugin.isPluginInstalled = null;
// Lets adapter.js wait until the the document is ready before injecting the plugin
AdapterJS.WebRTCPlugin.pluginInjectionInterval = null;
// Inject the HTML DOM object element into the page.
AdapterJS.WebRTCPlugin.injectPlugin = null;
// States of readiness that the plugin goes through when
// being injected and stated
AdapterJS.WebRTCPlugin.PLUGIN_STATES = {
NONE : 0, // no plugin use
INITIALIZING : 1, // Detected need for plugin
INJECTING : 2, // Injecting plugin
INJECTED: 3, // Plugin element injected but not usable yet
READY: 4 // Plugin ready to be used
};
// Current state of the plugin. You cannot use the plugin before this is
// equal to AdapterJS.WebRTCPlugin.PLUGIN_STATES.READY
AdapterJS.WebRTCPlugin.pluginState = AdapterJS.WebRTCPlugin.PLUGIN_STATES.NONE;
// True is AdapterJS.onwebrtcready was already called, false otherwise
// Used to make sure AdapterJS.onwebrtcready is only called once
AdapterJS.onwebrtcreadyDone = false;
// Log levels for the plugin.
// To be set by calling AdapterJS.WebRTCPlugin.setLogLevel
/*
Log outputs are prefixed in some cases.
INFO: Information reported by the plugin.
ERROR: Errors originating from within the plugin.
WEBRTC: Error originating from within the libWebRTC library
*/
// From the least verbose to the most verbose
AdapterJS.WebRTCPlugin.PLUGIN_LOG_LEVELS = {
NONE : 'NONE',
ERROR : 'ERROR',
WARNING : 'WARNING',
INFO: 'INFO',
VERBOSE: 'VERBOSE',
SENSITIVE: 'SENSITIVE'
};
// Does a waiting check before proceeding to load the plugin.
AdapterJS.WebRTCPlugin.WaitForPluginReady = null;
// This methid will use an interval to wait for the plugin to be ready.
AdapterJS.WebRTCPlugin.callWhenPluginReady = null;
// !!!! WARNING: DO NOT OVERRIDE THIS FUNCTION. !!!
// This function will be called when plugin is ready. It sends necessary
// details to the plugin.
// The function will wait for the document to be ready and the set the
// plugin state to AdapterJS.WebRTCPlugin.PLUGIN_STATES.READY,
// indicating that it can start being requested.
// This function is not in the IE/Safari condition brackets so that
// TemPluginLoaded function might be called on Chrome/Firefox.
// This function is the only private function that is not encapsulated to
// allow the plugin method to be called.
__TemWebRTCReady0 = function () {
if (document.readyState === 'complete') {
AdapterJS.WebRTCPlugin.pluginState = AdapterJS.WebRTCPlugin.PLUGIN_STATES.READY;
AdapterJS.maybeThroughWebRTCReady();
} else {
var timer = setInterval(function () {
if (document.readyState === 'complete') {
// TODO: update comments, we wait for the document to be ready
clearInterval(timer);
AdapterJS.WebRTCPlugin.pluginState = AdapterJS.WebRTCPlugin.PLUGIN_STATES.READY;
AdapterJS.maybeThroughWebRTCReady();
}
}, 100);
}
};
AdapterJS.maybeThroughWebRTCReady = function() {
if (!AdapterJS.onwebrtcreadyDone) {
AdapterJS.onwebrtcreadyDone = true;
// If new interface for multiple callbacks used
if (AdapterJS._onwebrtcreadies.length) {
AdapterJS._onwebrtcreadies.forEach(function (callback) {
if (typeof(callback) === 'function') {
callback(AdapterJS.WebRTCPlugin.plugin !== null);
}
});
// Else if no callbacks on new interface assuming user used old(deprecated) way to set callback through AdapterJS.onwebrtcready = ...
} else if (typeof(AdapterJS.onwebrtcready) === 'function') {
AdapterJS.onwebrtcready(AdapterJS.WebRTCPlugin.plugin !== null);
}
}
};
// Text namespace
AdapterJS.TEXT = {
PLUGIN: {
REQUIRE_INSTALLATION: 'This website requires you to install a WebRTC-enabling plugin ' +
'to work on this browser.',
NOT_SUPPORTED: 'Your browser does not support WebRTC.',
BUTTON: 'Install Now'
},
REFRESH: {
REQUIRE_REFRESH: 'Please refresh page',
BUTTON: 'Refresh Page'
}
};
// The result of ice connection states.
// - starting: Ice connection is starting.
// - checking: Ice connection is checking.
// - connected Ice connection is connected.
// - completed Ice connection is connected.
// - done Ice connection has been completed.
// - disconnected Ice connection has been disconnected.
// - failed Ice connection has failed.
// - closed Ice connection is closed.
AdapterJS._iceConnectionStates = {
starting : 'starting',
checking : 'checking',
connected : 'connected',
completed : 'connected',
done : 'completed',
disconnected : 'disconnected',
failed : 'failed',
closed : 'closed'
};
//The IceConnection states that has been fired for each peer.
AdapterJS._iceConnectionFiredStates = [];
// Check if WebRTC Interface is defined.
AdapterJS.isDefined = null;
// This function helps to retrieve the webrtc detected browser information.
// This sets:
// - webrtcDetectedBrowser: The browser agent name.
// - webrtcDetectedVersion: The browser version.
// - webrtcMinimumVersion: The minimum browser version still supported by AJS.
// - webrtcDetectedType: The types of webRTC support.
// - 'moz': Mozilla implementation of webRTC.
// - 'webkit': WebKit implementation of webRTC.
// - 'plugin': Using the plugin implementation.
AdapterJS.parseWebrtcDetectedBrowser = function () {
var hasMatch = null;
if ((!!window.opr && !!opr.addons) ||
!!window.opera ||
navigator.userAgent.indexOf(' OPR/') >= 0) {
// Opera 8.0+
webrtcDetectedBrowser = 'opera';
webrtcDetectedType = 'webkit';
webrtcMinimumVersion = 26;
hasMatch = /OPR\/(\d+)/i.exec(navigator.userAgent) || [];
webrtcDetectedVersion = parseInt(hasMatch[1], 10);
} else if (typeof InstallTrigger !== 'undefined') {
// Firefox 1.0+
// Bowser and Version set in Google's adapter
webrtcDetectedType = 'moz';
} else if (Object.prototype.toString.call(window.HTMLElement).indexOf('Constructor') > 0) {
// Safari
webrtcDetectedBrowser = 'safari';
webrtcDetectedType = 'plugin';
webrtcMinimumVersion = 7;
hasMatch = /version\/(\d+)/i.exec(navigator.userAgent) || [];
webrtcDetectedVersion = parseInt(hasMatch[1], 10);
} else if (/*@cc_on!@*/false || !!document.documentMode) {
// Internet Explorer 6-11
webrtcDetectedBrowser = 'IE';
webrtcDetectedType = 'plugin';
webrtcMinimumVersion = 9;
hasMatch = /\brv[ :]+(\d+)/g.exec(navigator.userAgent) || [];
webrtcDetectedVersion = parseInt(hasMatch[1] || '0', 10);
if (!webrtcDetectedVersion) {
hasMatch = /\bMSIE[ :]+(\d+)/g.exec(navigator.userAgent) || [];
webrtcDetectedVersion = parseInt(hasMatch[1] || '0', 10);
}
} else if (!!window.StyleMedia) {
// Edge 20+
// Bowser and Version set in Google's adapter
webrtcDetectedType = '';
} else if (!!window.chrome && !!window.chrome.webstore) {
// Chrome 1+
// Bowser and Version set in Google's adapter
webrtcDetectedType = 'webkit';
} else if ((webrtcDetectedBrowser === 'chrome'|| webrtcDetectedBrowser === 'opera') &&
!!window.CSS) {
// Blink engine detection
webrtcDetectedBrowser = 'blink';
// TODO: detected WebRTC version
}
if ((navigator.userAgent.match(/android/ig) || []).length === 0 &&
(navigator.userAgent.match(/chrome/ig) || []).length === 0 &&
navigator.userAgent.indexOf('Safari/') > 0) {
webrtcDetectedBrowser = 'safari';
webrtcDetectedVersion = parseInt((navigator.userAgent.match(/Version\/(.*)\ /) || ['', '0'])[1], 10);
webrtcMinimumVersion = 7;
webrtcDetectedType = 'plugin';
}
window.webrtcDetectedBrowser = webrtcDetectedBrowser;
window.webrtcDetectedVersion = webrtcDetectedVersion;
window.webrtcMinimumVersion = webrtcMinimumVersion;
};
AdapterJS.addEvent = function(elem, evnt, func) {
if (elem.addEventListener) { // W3C DOM
elem.addEventListener(evnt, func, false);
} else if (elem.attachEvent) {// OLD IE DOM
elem.attachEvent('on'+evnt, func);
} else { // No much to do
elem[evnt] = func;
}
};
AdapterJS.renderNotificationBar = function (text, buttonText, buttonLink, openNewTab, displayRefreshBar) {
// only inject once the page is ready
if (document.readyState !== 'complete') {
return;
}
var w = window;
var i = document.createElement('iframe');
i.name = 'adapterjs-alert';
i.style.position = 'fixed';
i.style.top = '-41px';
i.style.left = 0;
i.style.right = 0;
i.style.width = '100%';
i.style.height = '40px';
i.style.backgroundColor = '#ffffe1';
i.style.border = 'none';
i.style.borderBottom = '1px solid #888888';
i.style.zIndex = '9999999';
if(typeof i.style.webkitTransition === 'string') {
i.style.webkitTransition = 'all .5s ease-out';
} else if(typeof i.style.transition === 'string') {
i.style.transition = 'all .5s ease-out';
}
document.body.appendChild(i);
var c = (i.contentWindow) ? i.contentWindow :
(i.contentDocument.document) ? i.contentDocument.document : i.contentDocument;
c.document.open();
c.document.write('<span style="display: inline-block; font-family: Helvetica, Arial,' +
'sans-serif; font-size: .9rem; padding: 4px; vertical-align: ' +
'middle; cursor: default;">' + text + '</span>');
if(buttonText && buttonLink) {
c.document.write('<button id="okay">' + buttonText + '</button><button id="cancel">Cancel</button>');
c.document.close();
// On click on okay
AdapterJS.addEvent(c.document.getElementById('okay'), 'click', function(e) {
if (!!displayRefreshBar) {
AdapterJS.renderNotificationBar(AdapterJS.TEXT.EXTENSION ?
AdapterJS.TEXT.EXTENSION.REQUIRE_REFRESH : AdapterJS.TEXT.REFRESH.REQUIRE_REFRESH,
AdapterJS.TEXT.REFRESH.BUTTON, 'javascript:location.reload()'); // jshint ignore:line
}
window.open(buttonLink, !!openNewTab ? '_blank' : '_top');
e.preventDefault();
try {
e.cancelBubble = true;
} catch(error) { }
var pluginInstallInterval = setInterval(function(){
if(! isIE) {
navigator.plugins.refresh(false);
}
AdapterJS.WebRTCPlugin.isPluginInstalled(
AdapterJS.WebRTCPlugin.pluginInfo.prefix,
AdapterJS.WebRTCPlugin.pluginInfo.plugName,
AdapterJS.WebRTCPlugin.pluginInfo.type,
function() { // plugin now installed
clearInterval(pluginInstallInterval);
AdapterJS.WebRTCPlugin.defineWebRTCInterface();
},
function() {
// still no plugin detected, nothing to do
});
} , 500);
});
// On click on Cancel
AdapterJS.addEvent(c.document.getElementById('cancel'), 'click', function(e) {
w.document.body.removeChild(i);
});
} else {
c.document.close();
}
setTimeout(function() {
if(typeof i.style.webkitTransform === 'string') {
i.style.webkitTransform = 'translateY(40px)';
} else if(typeof i.style.transform === 'string') {
i.style.transform = 'translateY(40px)';
} else {
i.style.top = '0px';
}
}, 300);
};
// -----------------------------------------------------------
// Detected webrtc implementation. Types are:
// - 'moz': Mozilla implementation of webRTC.
// - 'webkit': WebKit implementation of webRTC.
// - 'plugin': Using the plugin implementation.
webrtcDetectedType = null;
// Set the settings for creating DataChannels, MediaStream for
// Cross-browser compability.
// - This is only for SCTP based support browsers.
// the 'urls' attribute.
checkMediaDataChannelSettings =
function (peerBrowserAgent, peerBrowserVersion, callback, constraints) {
if (typeof callback !== 'function') {
return;
}
var beOfferer = true;
var isLocalFirefox = webrtcDetectedBrowser === 'firefox';
// Nightly version does not require MozDontOfferDataChannel for interop
var isLocalFirefoxInterop = webrtcDetectedType === 'moz' && webrtcDetectedVersion > 30;
var isPeerFirefox = peerBrowserAgent === 'firefox';
var isPeerFirefoxInterop = peerBrowserAgent === 'firefox' &&
((peerBrowserVersion) ? (peerBrowserVersion > 30) : false);
// Resends an updated version of constraints for MozDataChannel to work
// If other userAgent is firefox and user is firefox, remove MozDataChannel
if ((isLocalFirefox && isPeerFirefox) || (isLocalFirefoxInterop)) {
try {
delete constraints.mandatory.MozDontOfferDataChannel;
} catch (error) {
console.error('Failed deleting MozDontOfferDataChannel');
console.error(error);
}
} else if ((isLocalFirefox && !isPeerFirefox)) {
constraints.mandatory.MozDontOfferDataChannel = true;
}
if (!isLocalFirefox) {
// temporary measure to remove Moz* constraints in non Firefox browsers
for (var prop in constraints.mandatory) {
if (constraints.mandatory.hasOwnProperty(prop)) {
if (prop.indexOf('Moz') !== -1) {
delete constraints.mandatory[prop];
}
}
}
}
// Firefox (not interopable) cannot offer DataChannel as it will cause problems to the
// interopability of the media stream
if (isLocalFirefox && !isPeerFirefox && !isLocalFirefoxInterop) {
beOfferer = false;
}
callback(beOfferer, constraints);
};
// Handles the differences for all browsers ice connection state output.
// - Tested outcomes are:
// - Chrome (offerer) : 'checking' > 'completed' > 'completed'
// - Chrome (answerer) : 'checking' > 'connected'
// - Firefox (offerer) : 'checking' > 'connected'
// - Firefox (answerer): 'checking' > 'connected'
checkIceConnectionState = function (peerId, iceConnectionState, callback) {
if (typeof callback !== 'function') {
console.warn('No callback specified in checkIceConnectionState. Aborted.');
return;
}
peerId = (peerId) ? peerId : 'peer';
if (!AdapterJS._iceConnectionFiredStates[peerId] ||
iceConnectionState === AdapterJS._iceConnectionStates.disconnected ||
iceConnectionState === AdapterJS._iceConnectionStates.failed ||
iceConnectionState === AdapterJS._iceConnectionStates.closed) {
AdapterJS._iceConnectionFiredStates[peerId] = [];
}
iceConnectionState = AdapterJS._iceConnectionStates[iceConnectionState];
if (AdapterJS._iceConnectionFiredStates[peerId].indexOf(iceConnectionState) < 0) {
AdapterJS._iceConnectionFiredStates[peerId].push(iceConnectionState);
if (iceConnectionState === AdapterJS._iceConnectionStates.connected) {
setTimeout(function () {
AdapterJS._iceConnectionFiredStates[peerId]
.push(AdapterJS._iceConnectionStates.done);
callback(AdapterJS._iceConnectionStates.done);
}, 1000);
}
callback(iceConnectionState);
}
return;
};
// Firefox:
// - Creates iceServer from the url for Firefox.
// - Create iceServer with stun url.
// - Create iceServer with turn url.
// - Ignore the transport parameter from TURN url for FF version <=27.
// - Return null for createIceServer if transport=tcp.
// - FF 27 and above supports transport parameters in TURN url,
// - So passing in the full url to create iceServer.
// Chrome:
// - Creates iceServer from the url for Chrome M33 and earlier.
// - Create iceServer with stun url.
// - Chrome M28 & above uses below TURN format.
// Plugin:
// - Creates Ice Server for Plugin Browsers
// - If Stun - Create iceServer with stun url.
// - Else - Create iceServer with turn url
// - This is a WebRTC Function
createIceServer = null;
// Firefox:
// - Creates IceServers for Firefox
// - Use .url for FireFox.
// - Multiple Urls support
// Chrome:
// - Creates iceServers from the urls for Chrome M34 and above.
// - .urls is supported since Chrome M34.
// - Multiple Urls support
// Plugin:
// - Creates Ice Servers for Plugin Browsers
// - Multiple Urls support
// - This is a WebRTC Function
createIceServers = null;
//------------------------------------------------------------
//The RTCPeerConnection object.
RTCPeerConnection = null;
// Creates RTCSessionDescription object for Plugin Browsers
RTCSessionDescription = (typeof RTCSessionDescription === 'function') ?
RTCSessionDescription : null;
// Creates RTCIceCandidate object for Plugin Browsers
RTCIceCandidate = (typeof RTCIceCandidate === 'function') ?
RTCIceCandidate : null;
// Get UserMedia (only difference is the prefix).
// Code from Adam Barth.
getUserMedia = null;
// Attach a media stream to an element.
attachMediaStream = null;
// Re-attach a media stream to an element.
reattachMediaStream = null;
// Detected browser agent name. Types are:
// - 'firefox': Firefox browser.
// - 'chrome': Chrome browser.
// - 'opera': Opera browser.
// - 'safari': Safari browser.
// - 'IE' - Internet Explorer browser.
webrtcDetectedBrowser = null;
// Detected browser version.
webrtcDetectedVersion = null;
// The minimum browser version still supported by AJS.
webrtcMinimumVersion = null;
// Check for browser types and react accordingly
if ( (navigator.mozGetUserMedia ||
navigator.webkitGetUserMedia ||
(navigator.mediaDevices &&
navigator.userAgent.match(/Edge\/(\d+).(\d+)$/)))
&& !((navigator.userAgent.match(/android/ig) || []).length === 0 &&
(navigator.userAgent.match(/chrome/ig) || []).length === 0 && navigator.userAgent.indexOf('Safari/') > 0)) {
///////////////////////////////////////////////////////////////////
// INJECTION OF GOOGLE'S ADAPTER.JS CONTENT
/* jshint ignore:start */
/*
* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree.
*/
/* More information about these options at jshint.com/docs/options */
/* jshint browser: true, camelcase: true, curly: true, devel: true,
eqeqeq: true, forin: false, globalstrict: true, node: true,
quotmark: single, undef: true, unused: strict */
/* global mozRTCIceCandidate, mozRTCPeerConnection, Promise,
mozRTCSessionDescription, webkitRTCPeerConnection, MediaStreamTrack,
MediaStream, RTCIceGatherer, RTCIceTransport, RTCDtlsTransport,
RTCRtpSender, RTCRtpReceiver*/
/* exported trace,requestUserMedia */
'use strict';
var getUserMedia = null;
var attachMediaStream = null;
var reattachMediaStream = null;
var webrtcDetectedBrowser = null;
var webrtcDetectedVersion = null;
var webrtcMinimumVersion = null;
var webrtcUtils = {
log: function() {
// suppress console.log output when being included as a module.
if (typeof module !== 'undefined' ||
typeof require === 'function' && typeof define === 'function') {
return;
}
console.log.apply(console, arguments);
},
extractVersion: function(uastring, expr, pos) {
var match = uastring.match(expr);
return match && match.length >= pos && parseInt(match[pos], 10);
}
};
function trace(text) {
// This function is used for logging.
if (text[text.length - 1] === '\n') {
text = text.substring(0, text.length - 1);
}
if (window.performance) {
var now = (window.performance.now() / 1000).toFixed(3);
webrtcUtils.log(now + ': ' + text);
} else {
webrtcUtils.log(text);
}
}
if (typeof window === 'object') {
if (window.HTMLMediaElement &&
!('srcObject' in window.HTMLMediaElement.prototype)) {
// Shim the srcObject property, once, when HTMLMediaElement is found.
Object.defineProperty(window.HTMLMediaElement.prototype, 'srcObject', {
get: function() {
// If prefixed srcObject property exists, return it.
// Otherwise use the shimmed property, _srcObject
return 'mozSrcObject' in this ? this.mozSrcObject : this._srcObject;
},
set: function(stream) {
if ('mozSrcObject' in this) {
this.mozSrcObject = stream;
} else {
// Use _srcObject as a private property for this shim
this._srcObject = stream;
// TODO: revokeObjectUrl(this.src) when !stream to release resources?
this.src = URL.createObjectURL(stream);
}
}
});
}
// Proxy existing globals
getUserMedia = window.navigator && window.navigator.getUserMedia;
}
// Attach a media stream to an element.
attachMediaStream = function(element, stream) {
element.srcObject = stream;
};
reattachMediaStream = function(to, from) {
to.srcObject = from.srcObject;
};
if (typeof window === 'undefined' || !window.navigator) {
webrtcUtils.log('This does not appear to be a browser');
webrtcDetectedBrowser = 'not a browser';
} else if (navigator.mozGetUserMedia) {
webrtcUtils.log('This appears to be Firefox');
webrtcDetectedBrowser = 'firefox';
// the detected firefox version.
webrtcDetectedVersion = webrtcUtils.extractVersion(navigator.userAgent,
/Firefox\/([0-9]+)\./, 1);
// the minimum firefox version still supported by adapter.
webrtcMinimumVersion = 31;
// Shim for RTCPeerConnection on older versions.
if (!window.RTCPeerConnection) {
window.RTCPeerConnection = function(pcConfig, pcConstraints) {
if (webrtcDetectedVersion < 38) {
// .urls is not supported in FF < 38.
// create RTCIceServers with a single url.
if (pcConfig && pcConfig.iceServers) {
var newIceServers = [];
for (var i = 0; i < pcConfig.iceServers.length; i++) {
var server = pcConfig.iceServers[i];
if (server.hasOwnProperty('urls')) {
for (var j = 0; j < server.urls.length; j++) {
var newServer = {
url: server.urls[j]
};
if (server.urls[j].indexOf('turn') === 0) {
newServer.username = server.username;
newServer.credential = server.credential;
}
newIceServers.push(newServer);
}
} else {
newIceServers.push(pcConfig.iceServers[i]);
}
}
pcConfig.iceServers = newIceServers;
}
}
return new mozRTCPeerConnection(pcConfig, pcConstraints); // jscs:ignore requireCapitalizedConstructors
};
// wrap static methods. Currently just generateCertificate.
if (mozRTCPeerConnection.generateCertificate) {
Object.defineProperty(window.RTCPeerConnection, 'generateCertificate', {
get: function() {
if (arguments.length) {
return mozRTCPeerConnection.generateCertificate.apply(null,
arguments);
} else {
return mozRTCPeerConnection.generateCertificate;
}
}
});
}
window.RTCSessionDescription = mozRTCSessionDescription;
window.RTCIceCandidate = mozRTCIceCandidate;
}
// getUserMedia constraints shim.
getUserMedia = function(constraints, onSuccess, onError) {
var constraintsToFF37 = function(c) {
if (typeof c !== 'object' || c.require) {
return c;
}
var require = [];
Object.keys(c).forEach(function(key) {
if (key === 'require' || key === 'advanced' || key === 'mediaSource') {
return;
}
var r = c[key] = (typeof c[key] === 'object') ?
c[key] : {ideal: c[key]};
if (r.min !== undefined ||
r.max !== undefined || r.exact !== undefined) {
require.push(key);
}
if (r.exact !== undefined) {
if (typeof r.exact === 'number') {
r.min = r.max = r.exact;
} else {
c[key] = r.exact;
}
delete r.exact;
}
if (r.ideal !== undefined) {
c.advanced = c.advanced || [];
var oc = {};
if (typeof r.ideal === 'number') {
oc[key] = {min: r.ideal, max: r.ideal};
} else {
oc[key] = r.ideal;
}
c.advanced.push(oc);
delete r.ideal;
if (!Object.keys(r).length) {
delete c[key];
}
}
});
if (require.length) {
c.require = require;
}
return c;
};
if (webrtcDetectedVersion < 38) {
webrtcUtils.log('spec: ' + JSON.stringify(constraints));
if (constraints.audio) {
constraints.audio = constraintsToFF37(constraints.audio);
}
if (constraints.video) {
constraints.video = constraintsToFF37(constraints.video);
}
webrtcUtils.log('ff37: ' + JSON.stringify(constraints));
}
return navigator.mozGetUserMedia(constraints, onSuccess, onError);
};
navigator.getUserMedia = getUserMedia;
// Shim for mediaDevices on older versions.
if (!navigator.mediaDevices) {
navigator.mediaDevices = {getUserMedia: requestUserMedia,
addEventListener: function() { },
removeEventListener: function() { }
};
}
navigator.mediaDevices.enumerateDevices =
navigator.mediaDevices.enumerateDevices || function() {
return new Promise(function(resolve) {
var infos = [
{kind: 'audioinput', deviceId: 'default', label: '', groupId: ''},
{kind: 'videoinput', deviceId: 'default', label: '', groupId: ''}
];
resolve(infos);
});
};
if (webrtcDetectedVersion < 41) {
// Work around http://bugzil.la/1169665
var orgEnumerateDevices =
navigator.mediaDevices.enumerateDevices.bind(navigator.mediaDevices);
navigator.mediaDevices.enumerateDevices = function() {
return orgEnumerateDevices().then(undefined, function(e) {
if (e.name === 'NotFoundError') {
return [];
}
throw e;
});
};
}
} else if (navigator.webkitGetUserMedia && window.webkitRTCPeerConnection) {
webrtcUtils.log('This appears to be Chrome');
webrtcDetectedBrowser = 'chrome';
// the detected chrome version.
webrtcDetectedVersion = webrtcUtils.extractVersion(navigator.userAgent,
/Chrom(e|ium)\/([0-9]+)\./, 2);
// the minimum chrome version still supported by adapter.
webrtcMinimumVersion = 38;
// The RTCPeerConnection object.
window.RTCPeerConnection = function(pcConfig, pcConstraints) {
// Translate iceTransportPolicy to iceTransports,
// see https://code.google.com/p/webrtc/issues/detail?id=4869
if (pcConfig && pcConfig.iceTransportPolicy) {
pcConfig.iceTransports = pcConfig.iceTransportPolicy;
}
var pc = new webkitRTCPeerConnection(pcConfig, pcConstraints); // jscs:ignore requireCapitalizedConstructors
var origGetStats = pc.getStats.bind(pc);
pc.getStats = function(selector, successCallback, errorCallback) { // jshint ignore: line
var self = this;
var args = arguments;
// If selector is a function then we are in the old style stats so just
// pass back the original getStats format to avoid breaking old users.
if (arguments.length > 0 && typeof selector === 'function') {
return origGetStats(selector, successCallback);
}
var fixChromeStats = function(response) {
var standardReport = {};
var reports = response.result();
reports.forEach(function(report) {
var standardStats = {
id: report.id,
timestamp: report.timestamp,
type: report.type
};
report.names().forEach(function(name) {
standardStats[name] = report.stat(name);
});
standardReport[standardStats.id] = standardStats;
});
return standardReport;
};
if (arguments.length >= 2) {
var successCallbackWrapper = function(response) {
args[1](fixChromeStats(response));
};
return origGetStats.apply(this, [successCallbackWrapper, arguments[0]]);
}
// promise-support
return new Promise(function(resolve, reject) {
if (args.length === 1 && selector === null) {
origGetStats.apply(self, [
function(response) {
resolve.apply(null, [fixChromeStats(response)]);
}, reject]);
} else {
origGetStats.apply(self, [resolve, reject]);
}
});
};
return pc;
};
// wrap static methods. Currently just generateCertificate.
if (webkitRTCPeerConnection.generateCertificate) {
Object.defineProperty(window.RTCPeerConnection, 'generateCertificate', {
get: function() {
if (arguments.length) {
return webkitRTCPeerConnection.generateCertificate.apply(null,
arguments);
} else {
return webkitRTCPeerConnection.generateCertificate;
}
}
});
}
// add promise support
['createOffer', 'createAnswer'].forEach(function(method) {
var nativeMethod = webkitRTCPeerConnection.prototype[method];
webkitRTCPeerConnection.prototype[method] = function() {
var self = this;
if (arguments.length < 1 || (arguments.length === 1 &&
typeof(arguments[0]) === 'object')) {
var opts = arguments.length === 1 ? arguments[0] : undefined;
return new Promise(function(resolve, reject) {
nativeMethod.apply(self, [resolve, reject, opts]);
});
} else {
return nativeMethod.apply(this, arguments);
}
};
});
['setLocalDescription', 'setRemoteDescription',
'addIceCandidate'].forEach(function(method) {
var nativeMethod = webkitRTCPeerConnection.prototype[method];
webkitRTCPeerConnection.prototype[method] = function() {
var args = arguments;
var self = this;
return new Promise(function(resolve, reject) {
nativeMethod.apply(self, [args[0],
function() {
resolve();
if (args.length >= 2) {
args[1].apply(null, []);
}
},
function(err) {
reject(err);
if (args.length >= 3) {
args[2].apply(null, [err]);
}
}]
);
});
};
});
// getUserMedia constraints shim.
var constraintsToChrome = function(c) {
if (typeof c !== 'object' || c.mandatory || c.optional) {
return c;
}
var cc = {};
Object.keys(c).forEach(function(key) {
if (key === 'require' || key === 'advanced' || key === 'mediaSource') {
return;
}
var r = (typeof c[key] === 'object') ? c[key] : {ideal: c[key]};
if (r.exact !== undefined && typeof r.exact === 'number') {
r.min = r.max = r.exact;
}
var oldname = function(prefix, name) {
if (prefix) {
return prefix + name.charAt(0).toUpperCase() + name.slice(1);
}
return (name === 'deviceId') ? 'sourceId' : name;
};
if (r.ideal !== undefined) {
cc.optional = cc.optional || [];
var oc = {};
if (typeof r.ideal === 'number') {
oc[oldname('min', key)] = r.ideal;
cc.optional.push(oc);
oc = {};
oc[oldname('max', key)] = r.ideal;
cc.optional.push(oc);
} else {
oc[oldname('', key)] = r.ideal;
cc.optional.push(oc);
}
}
if (r.exact !== undefined && typeof r.exact !== 'number') {
cc.mandatory = cc.mandatory || {};
cc.mandatory[oldname('', key)] = r.exact;
} else {
['min', 'max'].forEach(function(mix) {
if (r[mix] !== undefined) {
cc.mandatory = cc.mandatory || {};
cc.mandatory[oldname(mix, key)] = r[mix];
}
});
}
});
if (c.advanced) {