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-rw-r--r--.gitignore1
-rw-r--r--Makefile6
-rw-r--r--README.md22
-rw-r--r--example/adapter-8.0.0.js3480
l---------example/adapter-latest.js1
-rw-r--r--example/index.html25
-rw-r--r--example/index.js48
-rw-r--r--example/jsmn.h471
-rw-r--r--example/main.c112
-rw-r--r--example/video.264bin0 -> 75918 bytes
-rw-r--r--tinyrtc.h74
11 files changed, 4240 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e383139
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+example/webrtcd
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..4d82061
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,6 @@
+example/webrtcd: example/main.c tinyrtc.h
+ $(CC) $(CFLAGS) -I. -o $@ example/main.c
+
+.PHONY: clean
+clean:
+ rm -f example/webrtcd
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..095d825
--- /dev/null
+++ b/README.md
@@ -0,0 +1,22 @@
+TinyRTC
+=======
+
+A header-only implementation of WebRTC for small systems like IP cameras
+
+Build
+-----
+
+ make
+
+Running
+-------
+
+The demo uses stdin/stdout for signaling, with one message per line.
+The excellent [websocketd](https://websocketd.com) utility wraps stdin/stdout
+into a websocket. Run:
+
+ websocketd --port=8080 --staticdir=example ./example/webrtcd
+
+Then visit:
+
+ http://localhost:8080/
diff --git a/example/adapter-8.0.0.js b/example/adapter-8.0.0.js
new file mode 100644
index 0000000..59e9bfe
--- /dev/null
+++ b/example/adapter-8.0.0.js
@@ -0,0 +1,3480 @@
+(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.adapter = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
+/*
+ * 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.
+ */
+/* eslint-env node */
+
+'use strict';
+
+var _adapter_factory = require('./adapter_factory.js');
+
+var adapter = (0, _adapter_factory.adapterFactory)({ window: typeof window === 'undefined' ? undefined : window });
+module.exports = adapter; // this is the difference from adapter_core.
+
+},{"./adapter_factory.js":2}],2:[function(require,module,exports){
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+ value: true
+});
+exports.adapterFactory = adapterFactory;
+
+var _utils = require('./utils');
+
+var utils = _interopRequireWildcard(_utils);
+
+var _chrome_shim = require('./chrome/chrome_shim');
+
+var chromeShim = _interopRequireWildcard(_chrome_shim);
+
+var _firefox_shim = require('./firefox/firefox_shim');
+
+var firefoxShim = _interopRequireWildcard(_firefox_shim);
+
+var _safari_shim = require('./safari/safari_shim');
+
+var safariShim = _interopRequireWildcard(_safari_shim);
+
+var _common_shim = require('./common_shim');
+
+var commonShim = _interopRequireWildcard(_common_shim);
+
+var _sdp = require('sdp');
+
+var sdp = _interopRequireWildcard(_sdp);
+
+function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
+
+// Shimming starts here.
+/*
+ * 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.
+ */
+function adapterFactory() {
+ var _ref = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {},
+ window = _ref.window;
+
+ var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {
+ shimChrome: true,
+ shimFirefox: true,
+ shimSafari: true
+ };
+
+ // Utils.
+ var logging = utils.log;
+ var browserDetails = utils.detectBrowser(window);
+
+ var adapter = {
+ browserDetails: browserDetails,
+ commonShim: commonShim,
+ extractVersion: utils.extractVersion,
+ disableLog: utils.disableLog,
+ disableWarnings: utils.disableWarnings,
+ // Expose sdp as a convenience. For production apps include directly.
+ sdp: sdp
+ };
+
+ // Shim browser if found.
+ switch (browserDetails.browser) {
+ case 'chrome':
+ if (!chromeShim || !chromeShim.shimPeerConnection || !options.shimChrome) {
+ logging('Chrome shim is not included in this adapter release.');
+ return adapter;
+ }
+ if (browserDetails.version === null) {
+ logging('Chrome shim can not determine version, not shimming.');
+ return adapter;
+ }
+ logging('adapter.js shimming chrome.');
+ // Export to the adapter global object visible in the browser.
+ adapter.browserShim = chromeShim;
+
+ // Must be called before shimPeerConnection.
+ commonShim.shimAddIceCandidateNullOrEmpty(window, browserDetails);
+ commonShim.shimParameterlessSetLocalDescription(window, browserDetails);
+
+ chromeShim.shimGetUserMedia(window, browserDetails);
+ chromeShim.shimMediaStream(window, browserDetails);
+ chromeShim.shimPeerConnection(window, browserDetails);
+ chromeShim.shimOnTrack(window, browserDetails);
+ chromeShim.shimAddTrackRemoveTrack(window, browserDetails);
+ chromeShim.shimGetSendersWithDtmf(window, browserDetails);
+ chromeShim.shimGetStats(window, browserDetails);
+ chromeShim.shimSenderReceiverGetStats(window, browserDetails);
+ chromeShim.fixNegotiationNeeded(window, browserDetails);
+
+ commonShim.shimRTCIceCandidate(window, browserDetails);
+ commonShim.shimConnectionState(window, browserDetails);
+ commonShim.shimMaxMessageSize(window, browserDetails);
+ commonShim.shimSendThrowTypeError(window, browserDetails);
+ commonShim.removeExtmapAllowMixed(window, browserDetails);
+ break;
+ case 'firefox':
+ if (!firefoxShim || !firefoxShim.shimPeerConnection || !options.shimFirefox) {
+ logging('Firefox shim is not included in this adapter release.');
+ return adapter;
+ }
+ logging('adapter.js shimming firefox.');
+ // Export to the adapter global object visible in the browser.
+ adapter.browserShim = firefoxShim;
+
+ // Must be called before shimPeerConnection.
+ commonShim.shimAddIceCandidateNullOrEmpty(window, browserDetails);
+ commonShim.shimParameterlessSetLocalDescription(window, browserDetails);
+
+ firefoxShim.shimGetUserMedia(window, browserDetails);
+ firefoxShim.shimPeerConnection(window, browserDetails);
+ firefoxShim.shimOnTrack(window, browserDetails);
+ firefoxShim.shimRemoveStream(window, browserDetails);
+ firefoxShim.shimSenderGetStats(window, browserDetails);
+ firefoxShim.shimReceiverGetStats(window, browserDetails);
+ firefoxShim.shimRTCDataChannel(window, browserDetails);
+ firefoxShim.shimAddTransceiver(window, browserDetails);
+ firefoxShim.shimGetParameters(window, browserDetails);
+ firefoxShim.shimCreateOffer(window, browserDetails);
+ firefoxShim.shimCreateAnswer(window, browserDetails);
+
+ commonShim.shimRTCIceCandidate(window, browserDetails);
+ commonShim.shimConnectionState(window, browserDetails);
+ commonShim.shimMaxMessageSize(window, browserDetails);
+ commonShim.shimSendThrowTypeError(window, browserDetails);
+ break;
+ case 'safari':
+ if (!safariShim || !options.shimSafari) {
+ logging('Safari shim is not included in this adapter release.');
+ return adapter;
+ }
+ logging('adapter.js shimming safari.');
+ // Export to the adapter global object visible in the browser.
+ adapter.browserShim = safariShim;
+
+ // Must be called before shimCallbackAPI.
+ commonShim.shimAddIceCandidateNullOrEmpty(window, browserDetails);
+ commonShim.shimParameterlessSetLocalDescription(window, browserDetails);
+
+ safariShim.shimRTCIceServerUrls(window, browserDetails);
+ safariShim.shimCreateOfferLegacy(window, browserDetails);
+ safariShim.shimCallbacksAPI(window, browserDetails);
+ safariShim.shimLocalStreamsAPI(window, browserDetails);
+ safariShim.shimRemoteStreamsAPI(window, browserDetails);
+ safariShim.shimTrackEventTransceiver(window, browserDetails);
+ safariShim.shimGetUserMedia(window, browserDetails);
+ safariShim.shimAudioContext(window, browserDetails);
+
+ commonShim.shimRTCIceCandidate(window, browserDetails);
+ commonShim.shimMaxMessageSize(window, browserDetails);
+ commonShim.shimSendThrowTypeError(window, browserDetails);
+ commonShim.removeExtmapAllowMixed(window, browserDetails);
+ break;
+ default:
+ logging('Unsupported browser!');
+ break;
+ }
+
+ return adapter;
+}
+
+// Browser shims.
+
+},{"./chrome/chrome_shim":3,"./common_shim":6,"./firefox/firefox_shim":7,"./safari/safari_shim":10,"./utils":11,"sdp":12}],3:[function(require,module,exports){
+/*
+ * 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.
+ */
+/* eslint-env node */
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+ value: true
+});
+exports.shimGetDisplayMedia = exports.shimGetUserMedia = undefined;
+
+var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
+
+var _getusermedia = require('./getusermedia');
+
+Object.defineProperty(exports, 'shimGetUserMedia', {
+ enumerable: true,
+ get: function get() {
+ return _getusermedia.shimGetUserMedia;
+ }
+});
+
+var _getdisplaymedia = require('./getdisplaymedia');
+
+Object.defineProperty(exports, 'shimGetDisplayMedia', {
+ enumerable: true,
+ get: function get() {
+ return _getdisplaymedia.shimGetDisplayMedia;
+ }
+});
+exports.shimMediaStream = shimMediaStream;
+exports.shimOnTrack = shimOnTrack;
+exports.shimGetSendersWithDtmf = shimGetSendersWithDtmf;
+exports.shimGetStats = shimGetStats;
+exports.shimSenderReceiverGetStats = shimSenderReceiverGetStats;
+exports.shimAddTrackRemoveTrackWithNative = shimAddTrackRemoveTrackWithNative;
+exports.shimAddTrackRemoveTrack = shimAddTrackRemoveTrack;
+exports.shimPeerConnection = shimPeerConnection;
+exports.fixNegotiationNeeded = fixNegotiationNeeded;
+
+var _utils = require('../utils.js');
+
+var utils = _interopRequireWildcard(_utils);
+
+function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
+
+function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
+
+function shimMediaStream(window) {
+ window.MediaStream = window.MediaStream || window.webkitMediaStream;
+}
+
+function shimOnTrack(window) {
+ if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && !('ontrack' in window.RTCPeerConnection.prototype)) {
+ Object.defineProperty(window.RTCPeerConnection.prototype, 'ontrack', {
+ get: function get() {
+ return this._ontrack;
+ },
+ set: function set(f) {
+ if (this._ontrack) {
+ this.removeEventListener('track', this._ontrack);
+ }
+ this.addEventListener('track', this._ontrack = f);
+ },
+
+ enumerable: true,
+ configurable: true
+ });
+ var origSetRemoteDescription = window.RTCPeerConnection.prototype.setRemoteDescription;
+ window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription() {
+ var _this = this;
+
+ if (!this._ontrackpoly) {
+ this._ontrackpoly = function (e) {
+ // onaddstream does not fire when a track is added to an existing
+ // stream. But stream.onaddtrack is implemented so we use that.
+ e.stream.addEventListener('addtrack', function (te) {
+ var receiver = void 0;
+ if (window.RTCPeerConnection.prototype.getReceivers) {
+ receiver = _this.getReceivers().find(function (r) {
+ return r.track && r.track.id === te.track.id;
+ });
+ } else {
+ receiver = { track: te.track };
+ }
+
+ var event = new Event('track');
+ event.track = te.track;
+ event.receiver = receiver;
+ event.transceiver = { receiver: receiver };
+ event.streams = [e.stream];
+ _this.dispatchEvent(event);
+ });
+ e.stream.getTracks().forEach(function (track) {
+ var receiver = void 0;
+ if (window.RTCPeerConnection.prototype.getReceivers) {
+ receiver = _this.getReceivers().find(function (r) {
+ return r.track && r.track.id === track.id;
+ });
+ } else {
+ receiver = { track: track };
+ }
+ var event = new Event('track');
+ event.track = track;
+ event.receiver = receiver;
+ event.transceiver = { receiver: receiver };
+ event.streams = [e.stream];
+ _this.dispatchEvent(event);
+ });
+ };
+ this.addEventListener('addstream', this._ontrackpoly);
+ }
+ return origSetRemoteDescription.apply(this, arguments);
+ };
+ } else {
+ // even if RTCRtpTransceiver is in window, it is only used and
+ // emitted in unified-plan. Unfortunately this means we need
+ // to unconditionally wrap the event.
+ utils.wrapPeerConnectionEvent(window, 'track', function (e) {
+ if (!e.transceiver) {
+ Object.defineProperty(e, 'transceiver', { value: { receiver: e.receiver } });
+ }
+ return e;
+ });
+ }
+}
+
+function shimGetSendersWithDtmf(window) {
+ // Overrides addTrack/removeTrack, depends on shimAddTrackRemoveTrack.
+ if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && !('getSenders' in window.RTCPeerConnection.prototype) && 'createDTMFSender' in window.RTCPeerConnection.prototype) {
+ var shimSenderWithDtmf = function shimSenderWithDtmf(pc, track) {
+ return {
+ track: track,
+ get dtmf() {
+ if (this._dtmf === undefined) {
+ if (track.kind === 'audio') {
+ this._dtmf = pc.createDTMFSender(track);
+ } else {
+ this._dtmf = null;
+ }
+ }
+ return this._dtmf;
+ },
+ _pc: pc
+ };
+ };
+
+ // augment addTrack when getSenders is not available.
+ if (!window.RTCPeerConnection.prototype.getSenders) {
+ window.RTCPeerConnection.prototype.getSenders = function getSenders() {
+ this._senders = this._senders || [];
+ return this._senders.slice(); // return a copy of the internal state.
+ };
+ var origAddTrack = window.RTCPeerConnection.prototype.addTrack;
+ window.RTCPeerConnection.prototype.addTrack = function addTrack(track, stream) {
+ var sender = origAddTrack.apply(this, arguments);
+ if (!sender) {
+ sender = shimSenderWithDtmf(this, track);
+ this._senders.push(sender);
+ }
+ return sender;
+ };
+
+ var origRemoveTrack = window.RTCPeerConnection.prototype.removeTrack;
+ window.RTCPeerConnection.prototype.removeTrack = function removeTrack(sender) {
+ origRemoveTrack.apply(this, arguments);
+ var idx = this._senders.indexOf(sender);
+ if (idx !== -1) {
+ this._senders.splice(idx, 1);
+ }
+ };
+ }
+ var origAddStream = window.RTCPeerConnection.prototype.addStream;
+ window.RTCPeerConnection.prototype.addStream = function addStream(stream) {
+ var _this2 = this;
+
+ this._senders = this._senders || [];
+ origAddStream.apply(this, [stream]);
+ stream.getTracks().forEach(function (track) {
+ _this2._senders.push(shimSenderWithDtmf(_this2, track));
+ });
+ };
+
+ var origRemoveStream = window.RTCPeerConnection.prototype.removeStream;
+ window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {
+ var _this3 = this;
+
+ this._senders = this._senders || [];
+ origRemoveStream.apply(this, [stream]);
+
+ stream.getTracks().forEach(function (track) {
+ var sender = _this3._senders.find(function (s) {
+ return s.track === track;
+ });
+ if (sender) {
+ // remove sender
+ _this3._senders.splice(_this3._senders.indexOf(sender), 1);
+ }
+ });
+ };
+ } else if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && 'getSenders' in window.RTCPeerConnection.prototype && 'createDTMFSender' in window.RTCPeerConnection.prototype && window.RTCRtpSender && !('dtmf' in window.RTCRtpSender.prototype)) {
+ var origGetSenders = window.RTCPeerConnection.prototype.getSenders;
+ window.RTCPeerConnection.prototype.getSenders = function getSenders() {
+ var _this4 = this;
+
+ var senders = origGetSenders.apply(this, []);
+ senders.forEach(function (sender) {
+ return sender._pc = _this4;
+ });
+ return senders;
+ };
+
+ Object.defineProperty(window.RTCRtpSender.prototype, 'dtmf', {
+ get: function get() {
+ if (this._dtmf === undefined) {
+ if (this.track.kind === 'audio') {
+ this._dtmf = this._pc.createDTMFSender(this.track);
+ } else {
+ this._dtmf = null;
+ }
+ }
+ return this._dtmf;
+ }
+ });
+ }
+}
+
+function shimGetStats(window) {
+ if (!window.RTCPeerConnection) {
+ return;
+ }
+
+ var origGetStats = window.RTCPeerConnection.prototype.getStats;
+ window.RTCPeerConnection.prototype.getStats = function getStats() {
+ var _this5 = this;
+
+ var _arguments = Array.prototype.slice.call(arguments),
+ selector = _arguments[0],
+ onSucc = _arguments[1],
+ onErr = _arguments[2];
+
+ // 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.apply(this, arguments);
+ }
+
+ // When spec-style getStats is supported, return those when called with
+ // either no arguments or the selector argument is null.
+ if (origGetStats.length === 0 && (arguments.length === 0 || typeof selector !== 'function')) {
+ return origGetStats.apply(this, []);
+ }
+
+ var fixChromeStats_ = function fixChromeStats_(response) {
+ var standardReport = {};
+ var reports = response.result();
+ reports.forEach(function (report) {
+ var standardStats = {
+ id: report.id,
+ timestamp: report.timestamp,
+ type: {
+ localcandidate: 'local-candidate',
+ remotecandidate: 'remote-candidate'
+ }[report.type] || report.type
+ };
+ report.names().forEach(function (name) {
+ standardStats[name] = report.stat(name);
+ });
+ standardReport[standardStats.id] = standardStats;
+ });
+
+ return standardReport;
+ };
+
+ // shim getStats with maplike support
+ var makeMapStats = function makeMapStats(stats) {
+ return new Map(Object.keys(stats).map(function (key) {
+ return [key, stats[key]];
+ }));
+ };
+
+ if (arguments.length >= 2) {
+ var successCallbackWrapper_ = function successCallbackWrapper_(response) {
+ onSucc(makeMapStats(fixChromeStats_(response)));
+ };
+
+ return origGetStats.apply(this, [successCallbackWrapper_, selector]);
+ }
+
+ // promise-support
+ return new Promise(function (resolve, reject) {
+ origGetStats.apply(_this5, [function (response) {
+ resolve(makeMapStats(fixChromeStats_(response)));
+ }, reject]);
+ }).then(onSucc, onErr);
+ };
+}
+
+function shimSenderReceiverGetStats(window) {
+ if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && window.RTCRtpSender && window.RTCRtpReceiver)) {
+ return;
+ }
+
+ // shim sender stats.
+ if (!('getStats' in window.RTCRtpSender.prototype)) {
+ var origGetSenders = window.RTCPeerConnection.prototype.getSenders;
+ if (origGetSenders) {
+ window.RTCPeerConnection.prototype.getSenders = function getSenders() {
+ var _this6 = this;
+
+ var senders = origGetSenders.apply(this, []);
+ senders.forEach(function (sender) {
+ return sender._pc = _this6;
+ });
+ return senders;
+ };
+ }
+
+ var origAddTrack = window.RTCPeerConnection.prototype.addTrack;
+ if (origAddTrack) {
+ window.RTCPeerConnection.prototype.addTrack = function addTrack() {
+ var sender = origAddTrack.apply(this, arguments);
+ sender._pc = this;
+ return sender;
+ };
+ }
+ window.RTCRtpSender.prototype.getStats = function getStats() {
+ var sender = this;
+ return this._pc.getStats().then(function (result) {
+ return (
+ /* Note: this will include stats of all senders that
+ * send a track with the same id as sender.track as
+ * it is not possible to identify the RTCRtpSender.
+ */
+ utils.filterStats(result, sender.track, true)
+ );
+ });
+ };
+ }
+
+ // shim receiver stats.
+ if (!('getStats' in window.RTCRtpReceiver.prototype)) {
+ var origGetReceivers = window.RTCPeerConnection.prototype.getReceivers;
+ if (origGetReceivers) {
+ window.RTCPeerConnection.prototype.getReceivers = function getReceivers() {
+ var _this7 = this;
+
+ var receivers = origGetReceivers.apply(this, []);
+ receivers.forEach(function (receiver) {
+ return receiver._pc = _this7;
+ });
+ return receivers;
+ };
+ }
+ utils.wrapPeerConnectionEvent(window, 'track', function (e) {
+ e.receiver._pc = e.srcElement;
+ return e;
+ });
+ window.RTCRtpReceiver.prototype.getStats = function getStats() {
+ var receiver = this;
+ return this._pc.getStats().then(function (result) {
+ return utils.filterStats(result, receiver.track, false);
+ });
+ };
+ }
+
+ if (!('getStats' in window.RTCRtpSender.prototype && 'getStats' in window.RTCRtpReceiver.prototype)) {
+ return;
+ }
+
+ // shim RTCPeerConnection.getStats(track).
+ var origGetStats = window.RTCPeerConnection.prototype.getStats;
+ window.RTCPeerConnection.prototype.getStats = function getStats() {
+ if (arguments.length > 0 && arguments[0] instanceof window.MediaStreamTrack) {
+ var track = arguments[0];
+ var sender = void 0;
+ var receiver = void 0;
+ var err = void 0;
+ this.getSenders().forEach(function (s) {
+ if (s.track === track) {
+ if (sender) {
+ err = true;
+ } else {
+ sender = s;
+ }
+ }
+ });
+ this.getReceivers().forEach(function (r) {
+ if (r.track === track) {
+ if (receiver) {
+ err = true;
+ } else {
+ receiver = r;
+ }
+ }
+ return r.track === track;
+ });
+ if (err || sender && receiver) {
+ return Promise.reject(new DOMException('There are more than one sender or receiver for the track.', 'InvalidAccessError'));
+ } else if (sender) {
+ return sender.getStats();
+ } else if (receiver) {
+ return receiver.getStats();
+ }
+ return Promise.reject(new DOMException('There is no sender or receiver for the track.', 'InvalidAccessError'));
+ }
+ return origGetStats.apply(this, arguments);
+ };
+}
+
+function shimAddTrackRemoveTrackWithNative(window) {
+ // shim addTrack/removeTrack with native variants in order to make
+ // the interactions with legacy getLocalStreams behave as in other browsers.
+ // Keeps a mapping stream.id => [stream, rtpsenders...]
+ window.RTCPeerConnection.prototype.getLocalStreams = function getLocalStreams() {
+ var _this8 = this;
+
+ this._shimmedLocalStreams = this._shimmedLocalStreams || {};
+ return Object.keys(this._shimmedLocalStreams).map(function (streamId) {
+ return _this8._shimmedLocalStreams[streamId][0];
+ });
+ };
+
+ var origAddTrack = window.RTCPeerConnection.prototype.addTrack;
+ window.RTCPeerConnection.prototype.addTrack = function addTrack(track, stream) {
+ if (!stream) {
+ return origAddTrack.apply(this, arguments);
+ }
+ this._shimmedLocalStreams = this._shimmedLocalStreams || {};
+
+ var sender = origAddTrack.apply(this, arguments);
+ if (!this._shimmedLocalStreams[stream.id]) {
+ this._shimmedLocalStreams[stream.id] = [stream, sender];
+ } else if (this._shimmedLocalStreams[stream.id].indexOf(sender) === -1) {
+ this._shimmedLocalStreams[stream.id].push(sender);
+ }
+ return sender;
+ };
+
+ var origAddStream = window.RTCPeerConnection.prototype.addStream;
+ window.RTCPeerConnection.prototype.addStream = function addStream(stream) {
+ var _this9 = this;
+
+ this._shimmedLocalStreams = this._shimmedLocalStreams || {};
+
+ stream.getTracks().forEach(function (track) {
+ var alreadyExists = _this9.getSenders().find(function (s) {
+ return s.track === track;
+ });
+ if (alreadyExists) {
+ throw new DOMException('Track already exists.', 'InvalidAccessError');
+ }
+ });
+ var existingSenders = this.getSenders();
+ origAddStream.apply(this, arguments);
+ var newSenders = this.getSenders().filter(function (newSender) {
+ return existingSenders.indexOf(newSender) === -1;
+ });
+ this._shimmedLocalStreams[stream.id] = [stream].concat(newSenders);
+ };
+
+ var origRemoveStream = window.RTCPeerConnection.prototype.removeStream;
+ window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {
+ this._shimmedLocalStreams = this._shimmedLocalStreams || {};
+ delete this._shimmedLocalStreams[stream.id];
+ return origRemoveStream.apply(this, arguments);
+ };
+
+ var origRemoveTrack = window.RTCPeerConnection.prototype.removeTrack;
+ window.RTCPeerConnection.prototype.removeTrack = function removeTrack(sender) {
+ var _this10 = this;
+
+ this._shimmedLocalStreams = this._shimmedLocalStreams || {};
+ if (sender) {
+ Object.keys(this._shimmedLocalStreams).forEach(function (streamId) {
+ var idx = _this10._shimmedLocalStreams[streamId].indexOf(sender);
+ if (idx !== -1) {
+ _this10._shimmedLocalStreams[streamId].splice(idx, 1);
+ }
+ if (_this10._shimmedLocalStreams[streamId].length === 1) {
+ delete _this10._shimmedLocalStreams[streamId];
+ }
+ });
+ }
+ return origRemoveTrack.apply(this, arguments);
+ };
+}
+
+function shimAddTrackRemoveTrack(window, browserDetails) {
+ if (!window.RTCPeerConnection) {
+ return;
+ }
+ // shim addTrack and removeTrack.
+ if (window.RTCPeerConnection.prototype.addTrack && browserDetails.version >= 65) {
+ return shimAddTrackRemoveTrackWithNative(window);
+ }
+
+ // also shim pc.getLocalStreams when addTrack is shimmed
+ // to return the original streams.
+ var origGetLocalStreams = window.RTCPeerConnection.prototype.getLocalStreams;
+ window.RTCPeerConnection.prototype.getLocalStreams = function getLocalStreams() {
+ var _this11 = this;
+
+ var nativeStreams = origGetLocalStreams.apply(this);
+ this._reverseStreams = this._reverseStreams || {};
+ return nativeStreams.map(function (stream) {
+ return _this11._reverseStreams[stream.id];
+ });
+ };
+
+ var origAddStream = window.RTCPeerConnection.prototype.addStream;
+ window.RTCPeerConnection.prototype.addStream = function addStream(stream) {
+ var _this12 = this;
+
+ this._streams = this._streams || {};
+ this._reverseStreams = this._reverseStreams || {};
+
+ stream.getTracks().forEach(function (track) {
+ var alreadyExists = _this12.getSenders().find(function (s) {
+ return s.track === track;
+ });
+ if (alreadyExists) {
+ throw new DOMException('Track already exists.', 'InvalidAccessError');
+ }
+ });
+ // Add identity mapping for consistency with addTrack.
+ // Unless this is being used with a stream from addTrack.
+ if (!this._reverseStreams[stream.id]) {
+ var newStream = new window.MediaStream(stream.getTracks());
+ this._streams[stream.id] = newStream;
+ this._reverseStreams[newStream.id] = stream;
+ stream = newStream;
+ }
+ origAddStream.apply(this, [stream]);
+ };
+
+ var origRemoveStream = window.RTCPeerConnection.prototype.removeStream;
+ window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {
+ this._streams = this._streams || {};
+ this._reverseStreams = this._reverseStreams || {};
+
+ origRemoveStream.apply(this, [this._streams[stream.id] || stream]);
+ delete this._reverseStreams[this._streams[stream.id] ? this._streams[stream.id].id : stream.id];
+ delete this._streams[stream.id];
+ };
+
+ window.RTCPeerConnection.prototype.addTrack = function addTrack(track, stream) {
+ var _this13 = this;
+
+ if (this.signalingState === 'closed') {
+ throw new DOMException('The RTCPeerConnection\'s signalingState is \'closed\'.', 'InvalidStateError');
+ }
+ var streams = [].slice.call(arguments, 1);
+ if (streams.length !== 1 || !streams[0].getTracks().find(function (t) {
+ return t === track;
+ })) {
+ // this is not fully correct but all we can manage without
+ // [[associated MediaStreams]] internal slot.
+ throw new DOMException('The adapter.js addTrack polyfill only supports a single ' + ' stream which is associated with the specified track.', 'NotSupportedError');
+ }
+
+ var alreadyExists = this.getSenders().find(function (s) {
+ return s.track === track;
+ });
+ if (alreadyExists) {
+ throw new DOMException('Track already exists.', 'InvalidAccessError');
+ }
+
+ this._streams = this._streams || {};
+ this._reverseStreams = this._reverseStreams || {};
+ var oldStream = this._streams[stream.id];
+ if (oldStream) {
+ // this is using odd Chrome behaviour, use with caution:
+ // https://bugs.chromium.org/p/webrtc/issues/detail?id=7815
+ // Note: we rely on the high-level addTrack/dtmf shim to
+ // create the sender with a dtmf sender.
+ oldStream.addTrack(track);
+
+ // Trigger ONN async.
+ Promise.resolve().then(function () {
+ _this13.dispatchEvent(new Event('negotiationneeded'));
+ });
+ } else {
+ var newStream = new window.MediaStream([track]);
+ this._streams[stream.id] = newStream;
+ this._reverseStreams[newStream.id] = stream;
+ this.addStream(newStream);
+ }
+ return this.getSenders().find(function (s) {
+ return s.track === track;
+ });
+ };
+
+ // replace the internal stream id with the external one and
+ // vice versa.
+ function replaceInternalStreamId(pc, description) {
+ var sdp = description.sdp;
+ Object.keys(pc._reverseStreams || []).forEach(function (internalId) {
+ var externalStream = pc._reverseStreams[internalId];
+ var internalStream = pc._streams[externalStream.id];
+ sdp = sdp.replace(new RegExp(internalStream.id, 'g'), externalStream.id);
+ });
+ return new RTCSessionDescription({
+ type: description.type,
+ sdp: sdp
+ });
+ }
+ function replaceExternalStreamId(pc, description) {
+ var sdp = description.sdp;
+ Object.keys(pc._reverseStreams || []).forEach(function (internalId) {
+ var externalStream = pc._reverseStreams[internalId];
+ var internalStream = pc._streams[externalStream.id];
+ sdp = sdp.replace(new RegExp(externalStream.id, 'g'), internalStream.id);
+ });
+ return new RTCSessionDescription({
+ type: description.type,
+ sdp: sdp
+ });
+ }
+ ['createOffer', 'createAnswer'].forEach(function (method) {
+ var nativeMethod = window.RTCPeerConnection.prototype[method];
+ var methodObj = _defineProperty({}, method, function () {
+ var _this14 = this;
+
+ var args = arguments;
+ var isLegacyCall = arguments.length && typeof arguments[0] === 'function';
+ if (isLegacyCall) {
+ return nativeMethod.apply(this, [function (description) {
+ var desc = replaceInternalStreamId(_this14, description);
+ args[0].apply(null, [desc]);
+ }, function (err) {
+ if (args[1]) {
+ args[1].apply(null, err);
+ }
+ }, arguments[2]]);
+ }
+ return nativeMethod.apply(this, arguments).then(function (description) {
+ return replaceInternalStreamId(_this14, description);
+ });
+ });
+ window.RTCPeerConnection.prototype[method] = methodObj[method];
+ });
+
+ var origSetLocalDescription = window.RTCPeerConnection.prototype.setLocalDescription;
+ window.RTCPeerConnection.prototype.setLocalDescription = function setLocalDescription() {
+ if (!arguments.length || !arguments[0].type) {
+ return origSetLocalDescription.apply(this, arguments);
+ }
+ arguments[0] = replaceExternalStreamId(this, arguments[0]);
+ return origSetLocalDescription.apply(this, arguments);
+ };
+
+ // TODO: mangle getStats: https://w3c.github.io/webrtc-stats/#dom-rtcmediastreamstats-streamidentifier
+
+ var origLocalDescription = Object.getOwnPropertyDescriptor(window.RTCPeerConnection.prototype, 'localDescription');
+ Object.defineProperty(window.RTCPeerConnection.prototype, 'localDescription', {
+ get: function get() {
+ var description = origLocalDescription.get.apply(this);
+ if (description.type === '') {
+ return description;
+ }
+ return replaceInternalStreamId(this, description);
+ }
+ });
+
+ window.RTCPeerConnection.prototype.removeTrack = function removeTrack(sender) {
+ var _this15 = this;
+
+ if (this.signalingState === 'closed') {
+ throw new DOMException('The RTCPeerConnection\'s signalingState is \'closed\'.', 'InvalidStateError');
+ }
+ // We can not yet check for sender instanceof RTCRtpSender
+ // since we shim RTPSender. So we check if sender._pc is set.
+ if (!sender._pc) {
+ throw new DOMException('Argument 1 of RTCPeerConnection.removeTrack ' + 'does not implement interface RTCRtpSender.', 'TypeError');
+ }
+ var isLocal = sender._pc === this;
+ if (!isLocal) {
+ throw new DOMException('Sender was not created by this connection.', 'InvalidAccessError');
+ }
+
+ // Search for the native stream the senders track belongs to.
+ this._streams = this._streams || {};
+ var stream = void 0;
+ Object.keys(this._streams).forEach(function (streamid) {
+ var hasTrack = _this15._streams[streamid].getTracks().find(function (track) {
+ return sender.track === track;
+ });
+ if (hasTrack) {
+ stream = _this15._streams[streamid];
+ }
+ });
+
+ if (stream) {
+ if (stream.getTracks().length === 1) {
+ // if this is the last track of the stream, remove the stream. This
+ // takes care of any shimmed _senders.
+ this.removeStream(this._reverseStreams[stream.id]);
+ } else {
+ // relying on the same odd chrome behaviour as above.
+ stream.removeTrack(sender.track);
+ }
+ this.dispatchEvent(new Event('negotiationneeded'));
+ }
+ };
+}
+
+function shimPeerConnection(window, browserDetails) {
+ if (!window.RTCPeerConnection && window.webkitRTCPeerConnection) {
+ // very basic support for old versions.
+ window.RTCPeerConnection = window.webkitRTCPeerConnection;
+ }
+ if (!window.RTCPeerConnection) {
+ return;
+ }
+
+ // shim implicit creation of RTCSessionDescription/RTCIceCandidate
+ if (browserDetails.version < 53) {
+ ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'].forEach(function (method) {
+ var nativeMethod = window.RTCPeerConnection.prototype[method];
+ var methodObj = _defineProperty({}, method, function () {
+ arguments[0] = new (method === 'addIceCandidate' ? window.RTCIceCandidate : window.RTCSessionDescription)(arguments[0]);
+ return nativeMethod.apply(this, arguments);
+ });
+ window.RTCPeerConnection.prototype[method] = methodObj[method];
+ });
+ }
+}
+
+// Attempt to fix ONN in plan-b mode.
+function fixNegotiationNeeded(window, browserDetails) {
+ utils.wrapPeerConnectionEvent(window, 'negotiationneeded', function (e) {
+ var pc = e.target;
+ if (browserDetails.version < 72 || pc.getConfiguration && pc.getConfiguration().sdpSemantics === 'plan-b') {
+ if (pc.signalingState !== 'stable') {
+ return;
+ }
+ }
+ return e;
+ });
+}
+
+},{"../utils.js":11,"./getdisplaymedia":4,"./getusermedia":5}],4:[function(require,module,exports){
+/*
+ * Copyright (c) 2018 The adapter.js 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.
+ */
+/* eslint-env node */
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+ value: true
+});
+exports.shimGetDisplayMedia = shimGetDisplayMedia;
+function shimGetDisplayMedia(window, getSourceId) {
+ if (window.navigator.mediaDevices && 'getDisplayMedia' in window.navigator.mediaDevices) {
+ return;
+ }
+ if (!window.navigator.mediaDevices) {
+ return;
+ }
+ // getSourceId is a function that returns a promise resolving with
+ // the sourceId of the screen/window/tab to be shared.
+ if (typeof getSourceId !== 'function') {
+ console.error('shimGetDisplayMedia: getSourceId argument is not ' + 'a function');
+ return;
+ }
+ window.navigator.mediaDevices.getDisplayMedia = function getDisplayMedia(constraints) {
+ return getSourceId(constraints).then(function (sourceId) {
+ var widthSpecified = constraints.video && constraints.video.width;
+ var heightSpecified = constraints.video && constraints.video.height;
+ var frameRateSpecified = constraints.video && constraints.video.frameRate;
+ constraints.video = {
+ mandatory: {
+ chromeMediaSource: 'desktop',
+ chromeMediaSourceId: sourceId,
+ maxFrameRate: frameRateSpecified || 3
+ }
+ };
+ if (widthSpecified) {
+ constraints.video.mandatory.maxWidth = widthSpecified;
+ }
+ if (heightSpecified) {
+ constraints.video.mandatory.maxHeight = heightSpecified;
+ }
+ return window.navigator.mediaDevices.getUserMedia(constraints);
+ });
+ };
+}
+
+},{}],5:[function(require,module,exports){
+/*
+ * 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.
+ */
+/* eslint-env node */
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+ value: true
+});
+
+var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
+
+exports.shimGetUserMedia = shimGetUserMedia;
+
+var _utils = require('../utils.js');
+
+var utils = _interopRequireWildcard(_utils);
+
+function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
+
+var logging = utils.log;
+
+function shimGetUserMedia(window, browserDetails) {
+ var navigator = window && window.navigator;
+
+ if (!navigator.mediaDevices) {
+ return;
+ }
+
+ var constraintsToChrome_ = function constraintsToChrome_(c) {
+ if ((typeof c === 'undefined' ? 'undefined' : _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 oldname_(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) {
+ cc.optional = (cc.optional || []).concat(c.advanced);
+ }
+ return cc;
+ };
+
+ var shimConstraints_ = function shimConstraints_(constraints, func) {
+ if (browserDetails.version >= 61) {
+ return func(constraints);
+ }
+ constraints = JSON.parse(JSON.stringify(constraints));
+ if (constraints && _typeof(constraints.audio) === 'object') {
+ var remap = function remap(obj, a, b) {
+ if (a in obj && !(b in obj)) {
+ obj[b] = obj[a];
+ delete obj[a];
+ }
+ };
+ constraints = JSON.parse(JSON.stringify(constraints));
+ remap(constraints.audio, 'autoGainControl', 'googAutoGainControl');
+ remap(constraints.audio, 'noiseSuppression', 'googNoiseSuppression');
+ constraints.audio = constraintsToChrome_(constraints.audio);
+ }
+ if (constraints && _typeof(constraints.video) === 'object') {
+ // Shim facingMode for mobile & surface pro.
+ var face = constraints.video.facingMode;
+ face = face && ((typeof face === 'undefined' ? 'undefined' : _typeof(face)) === 'object' ? face : { ideal: face });
+ var getSupportedFacingModeLies = browserDetails.version < 66;
+
+ if (face && (face.exact === 'user' || face.exact === 'environment' || face.ideal === 'user' || face.ideal === 'environment') && !(navigator.mediaDevices.getSupportedConstraints && navigator.mediaDevices.getSupportedConstraints().facingMode && !getSupportedFacingModeLies)) {
+ delete constraints.video.facingMode;
+ var matches = void 0;
+ if (face.exact === 'environment' || face.ideal === 'environment') {
+ matches = ['back', 'rear'];
+ } else if (face.exact === 'user' || face.ideal === 'user') {
+ matches = ['front'];
+ }
+ if (matches) {
+ // Look for matches in label, or use last cam for back (typical).
+ return navigator.mediaDevices.enumerateDevices().then(function (devices) {
+ devices = devices.filter(function (d) {
+ return d.kind === 'videoinput';
+ });
+ var dev = devices.find(function (d) {
+ return matches.some(function (match) {
+ return d.label.toLowerCase().includes(match);
+ });
+ });
+ if (!dev && devices.length && matches.includes('back')) {
+ dev = devices[devices.length - 1]; // more likely the back cam
+ }
+ if (dev) {
+ constraints.video.deviceId = face.exact ? { exact: dev.deviceId } : { ideal: dev.deviceId };
+ }
+ constraints.video = constraintsToChrome_(constraints.video);
+ logging('chrome: ' + JSON.stringify(constraints));
+ return func(constraints);
+ });
+ }
+ }
+ constraints.video = constraintsToChrome_(constraints.video);
+ }
+ logging('chrome: ' + JSON.stringify(constraints));
+ return func(constraints);
+ };
+
+ var shimError_ = function shimError_(e) {
+ if (browserDetails.version >= 64) {
+ return e;
+ }
+ return {
+ name: {
+ PermissionDeniedError: 'NotAllowedError',
+ PermissionDismissedError: 'NotAllowedError',
+ InvalidStateError: 'NotAllowedError',
+ DevicesNotFoundError: 'NotFoundError',
+ ConstraintNotSatisfiedError: 'OverconstrainedError',
+ TrackStartError: 'NotReadableError',
+ MediaDeviceFailedDueToShutdown: 'NotAllowedError',
+ MediaDeviceKillSwitchOn: 'NotAllowedError',
+ TabCaptureError: 'AbortError',
+ ScreenCaptureError: 'AbortError',
+ DeviceCaptureError: 'AbortError'
+ }[e.name] || e.name,
+ message: e.message,
+ constraint: e.constraint || e.constraintName,
+ toString: function toString() {
+ return this.name + (this.message && ': ') + this.message;
+ }
+ };
+ };
+
+ var getUserMedia_ = function getUserMedia_(constraints, onSuccess, onError) {
+ shimConstraints_(constraints, function (c) {
+ navigator.webkitGetUserMedia(c, onSuccess, function (e) {
+ if (onError) {
+ onError(shimError_(e));
+ }
+ });
+ });
+ };
+ navigator.getUserMedia = getUserMedia_.bind(navigator);
+
+ // Even though Chrome 45 has navigator.mediaDevices and a getUserMedia
+ // function which returns a Promise, it does not accept spec-style
+ // constraints.
+ if (navigator.mediaDevices.getUserMedia) {
+ var origGetUserMedia = navigator.mediaDevices.getUserMedia.bind(navigator.mediaDevices);
+ navigator.mediaDevices.getUserMedia = function (cs) {
+ return shimConstraints_(cs, function (c) {
+ return origGetUserMedia(c).then(function (stream) {
+ if (c.audio && !stream.getAudioTracks().length || c.video && !stream.getVideoTracks().length) {
+ stream.getTracks().forEach(function (track) {
+ track.stop();
+ });
+ throw new DOMException('', 'NotFoundError');
+ }
+ return stream;
+ }, function (e) {
+ return Promise.reject(shimError_(e));
+ });
+ });
+ };
+ }
+}
+
+},{"../utils.js":11}],6:[function(require,module,exports){
+/*
+ * Copyright (c) 2017 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.
+ */
+/* eslint-env node */
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+ value: true
+});
+
+var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
+
+exports.shimRTCIceCandidate = shimRTCIceCandidate;
+exports.shimMaxMessageSize = shimMaxMessageSize;
+exports.shimSendThrowTypeError = shimSendThrowTypeError;
+exports.shimConnectionState = shimConnectionState;
+exports.removeExtmapAllowMixed = removeExtmapAllowMixed;
+exports.shimAddIceCandidateNullOrEmpty = shimAddIceCandidateNullOrEmpty;
+exports.shimParameterlessSetLocalDescription = shimParameterlessSetLocalDescription;
+
+var _sdp = require('sdp');
+
+var _sdp2 = _interopRequireDefault(_sdp);
+
+var _utils = require('./utils');
+
+var utils = _interopRequireWildcard(_utils);
+
+function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+function shimRTCIceCandidate(window) {
+ // foundation is arbitrarily chosen as an indicator for full support for
+ // https://w3c.github.io/webrtc-pc/#rtcicecandidate-interface
+ if (!window.RTCIceCandidate || window.RTCIceCandidate && 'foundation' in window.RTCIceCandidate.prototype) {
+ return;
+ }
+
+ var NativeRTCIceCandidate = window.RTCIceCandidate;
+ window.RTCIceCandidate = function RTCIceCandidate(args) {
+ // Remove the a= which shouldn't be part of the candidate string.
+ if ((typeof args === 'undefined' ? 'undefined' : _typeof(args)) === 'object' && args.candidate && args.candidate.indexOf('a=') === 0) {
+ args = JSON.parse(JSON.stringify(args));
+ args.candidate = args.candidate.substr(2);
+ }
+
+ if (args.candidate && args.candidate.length) {
+ // Augment the native candidate with the parsed fields.
+ var nativeCandidate = new NativeRTCIceCandidate(args);
+ var parsedCandidate = _sdp2.default.parseCandidate(args.candidate);
+ var augmentedCandidate = Object.assign(nativeCandidate, parsedCandidate);
+
+ // Add a serializer that does not serialize the extra attributes.
+ augmentedCandidate.toJSON = function toJSON() {
+ return {
+ candidate: augmentedCandidate.candidate,
+ sdpMid: augmentedCandidate.sdpMid,
+ sdpMLineIndex: augmentedCandidate.sdpMLineIndex,
+ usernameFragment: augmentedCandidate.usernameFragment
+ };
+ };
+ return augmentedCandidate;
+ }
+ return new NativeRTCIceCandidate(args);
+ };
+ window.RTCIceCandidate.prototype = NativeRTCIceCandidate.prototype;
+
+ // Hook up the augmented candidate in onicecandidate and
+ // addEventListener('icecandidate', ...)
+ utils.wrapPeerConnectionEvent(window, 'icecandidate', function (e) {
+ if (e.candidate) {
+ Object.defineProperty(e, 'candidate', {
+ value: new window.RTCIceCandidate(e.candidate),
+ writable: 'false'
+ });
+ }
+ return e;
+ });
+}
+
+function shimMaxMessageSize(window, browserDetails) {
+ if (!window.RTCPeerConnection) {
+ return;
+ }
+
+ if (!('sctp' in window.RTCPeerConnection.prototype)) {
+ Object.defineProperty(window.RTCPeerConnection.prototype, 'sctp', {
+ get: function get() {
+ return typeof this._sctp === 'undefined' ? null : this._sctp;
+ }
+ });
+ }
+
+ var sctpInDescription = function sctpInDescription(description) {
+ if (!description || !description.sdp) {
+ return false;
+ }
+ var sections = _sdp2.default.splitSections(description.sdp);
+ sections.shift();
+ return sections.some(function (mediaSection) {
+ var mLine = _sdp2.default.parseMLine(mediaSection);
+ return mLine && mLine.kind === 'application' && mLine.protocol.indexOf('SCTP') !== -1;
+ });
+ };
+
+ var getRemoteFirefoxVersion = function getRemoteFirefoxVersion(description) {
+ // TODO: Is there a better solution for detecting Firefox?
+ var match = description.sdp.match(/mozilla...THIS_IS_SDPARTA-(\d+)/);
+ if (match === null || match.length < 2) {
+ return -1;
+ }
+ var version = parseInt(match[1], 10);
+ // Test for NaN (yes, this is ugly)
+ return version !== version ? -1 : version;
+ };
+
+ var getCanSendMaxMessageSize = function getCanSendMaxMessageSize(remoteIsFirefox) {
+ // Every implementation we know can send at least 64 KiB.
+ // Note: Although Chrome is technically able to send up to 256 KiB, the
+ // data does not reach the other peer reliably.
+ // See: https://bugs.chromium.org/p/webrtc/issues/detail?id=8419
+ var canSendMaxMessageSize = 65536;
+ if (browserDetails.browser === 'firefox') {
+ if (browserDetails.version < 57) {
+ if (remoteIsFirefox === -1) {
+ // FF < 57 will send in 16 KiB chunks using the deprecated PPID
+ // fragmentation.
+ canSendMaxMessageSize = 16384;
+ } else {
+ // However, other FF (and RAWRTC) can reassemble PPID-fragmented
+ // messages. Thus, supporting ~2 GiB when sending.
+ canSendMaxMessageSize = 2147483637;
+ }
+ } else if (browserDetails.version < 60) {
+ // Currently, all FF >= 57 will reset the remote maximum message size
+ // to the default value when a data channel is created at a later
+ // stage. :(
+ // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1426831
+ canSendMaxMessageSize = browserDetails.version === 57 ? 65535 : 65536;
+ } else {
+ // FF >= 60 supports sending ~2 GiB
+ canSendMaxMessageSize = 2147483637;
+ }
+ }
+ return canSendMaxMessageSize;
+ };
+
+ var getMaxMessageSize = function getMaxMessageSize(description, remoteIsFirefox) {
+ // Note: 65536 bytes is the default value from the SDP spec. Also,
+ // every implementation we know supports receiving 65536 bytes.
+ var maxMessageSize = 65536;
+
+ // FF 57 has a slightly incorrect default remote max message size, so
+ // we need to adjust it here to avoid a failure when sending.
+ // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1425697
+ if (browserDetails.browser === 'firefox' && browserDetails.version === 57) {
+ maxMessageSize = 65535;
+ }
+
+ var match = _sdp2.default.matchPrefix(description.sdp, 'a=max-message-size:');
+ if (match.length > 0) {
+ maxMessageSize = parseInt(match[0].substr(19), 10);
+ } else if (browserDetails.browser === 'firefox' && remoteIsFirefox !== -1) {
+ // If the maximum message size is not present in the remote SDP and
+ // both local and remote are Firefox, the remote peer can receive
+ // ~2 GiB.
+ maxMessageSize = 2147483637;
+ }
+ return maxMessageSize;
+ };
+
+ var origSetRemoteDescription = window.RTCPeerConnection.prototype.setRemoteDescription;
+ window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription() {
+ this._sctp = null;
+ // Chrome decided to not expose .sctp in plan-b mode.
+ // As usual, adapter.js has to do an 'ugly worakaround'
+ // to cover up the mess.
+ if (browserDetails.browser === 'chrome' && browserDetails.version >= 76) {
+ var _getConfiguration = this.getConfiguration(),
+ sdpSemantics = _getConfiguration.sdpSemantics;
+
+ if (sdpSemantics === 'plan-b') {
+ Object.defineProperty(this, 'sctp', {
+ get: function get() {
+ return typeof this._sctp === 'undefined' ? null : this._sctp;
+ },
+
+ enumerable: true,
+ configurable: true
+ });
+ }
+ }
+
+ if (sctpInDescription(arguments[0])) {
+ // Check if the remote is FF.
+ var isFirefox = getRemoteFirefoxVersion(arguments[0]);
+
+ // Get the maximum message size the local peer is capable of sending
+ var canSendMMS = getCanSendMaxMessageSize(isFirefox);
+
+ // Get the maximum message size of the remote peer.
+ var remoteMMS = getMaxMessageSize(arguments[0], isFirefox);
+
+ // Determine final maximum message size
+ var maxMessageSize = void 0;
+ if (canSendMMS === 0 && remoteMMS === 0) {
+ maxMessageSize = Number.POSITIVE_INFINITY;
+ } else if (canSendMMS === 0 || remoteMMS === 0) {
+ maxMessageSize = Math.max(canSendMMS, remoteMMS);
+ } else {
+ maxMessageSize = Math.min(canSendMMS, remoteMMS);
+ }
+
+ // Create a dummy RTCSctpTransport object and the 'maxMessageSize'
+ // attribute.
+ var sctp = {};
+ Object.defineProperty(sctp, 'maxMessageSize', {
+ get: function get() {
+ return maxMessageSize;
+ }
+ });
+ this._sctp = sctp;
+ }
+
+ return origSetRemoteDescription.apply(this, arguments);
+ };
+}
+
+function shimSendThrowTypeError(window) {
+ if (!(window.RTCPeerConnection && 'createDataChannel' in window.RTCPeerConnection.prototype)) {
+ return;
+ }
+
+ // Note: Although Firefox >= 57 has a native implementation, the maximum
+ // message size can be reset for all data channels at a later stage.
+ // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1426831
+
+ function wrapDcSend(dc, pc) {
+ var origDataChannelSend = dc.send;
+ dc.send = function send() {
+ var data = arguments[0];
+ var length = data.length || data.size || data.byteLength;
+ if (dc.readyState === 'open' && pc.sctp && length > pc.sctp.maxMessageSize) {
+ throw new TypeError('Message too large (can send a maximum of ' + pc.sctp.maxMessageSize + ' bytes)');
+ }
+ return origDataChannelSend.apply(dc, arguments);
+ };
+ }
+ var origCreateDataChannel = window.RTCPeerConnection.prototype.createDataChannel;
+ window.RTCPeerConnection.prototype.createDataChannel = function createDataChannel() {
+ var dataChannel = origCreateDataChannel.apply(this, arguments);
+ wrapDcSend(dataChannel, this);
+ return dataChannel;
+ };
+ utils.wrapPeerConnectionEvent(window, 'datachannel', function (e) {
+ wrapDcSend(e.channel, e.target);
+ return e;
+ });
+}
+
+/* shims RTCConnectionState by pretending it is the same as iceConnectionState.
+ * See https://bugs.chromium.org/p/webrtc/issues/detail?id=6145#c12
+ * for why this is a valid hack in Chrome. In Firefox it is slightly incorrect
+ * since DTLS failures would be hidden. See
+ * https://bugzilla.mozilla.org/show_bug.cgi?id=1265827
+ * for the Firefox tracking bug.
+ */
+function shimConnectionState(window) {
+ if (!window.RTCPeerConnection || 'connectionState' in window.RTCPeerConnection.prototype) {
+ return;
+ }
+ var proto = window.RTCPeerConnection.prototype;
+ Object.defineProperty(proto, 'connectionState', {
+ get: function get() {
+ return {
+ completed: 'connected',
+ checking: 'connecting'
+ }[this.iceConnectionState] || this.iceConnectionState;
+ },
+
+ enumerable: true,
+ configurable: true
+ });
+ Object.defineProperty(proto, 'onconnectionstatechange', {
+ get: function get() {
+ return this._onconnectionstatechange || null;
+ },
+ set: function set(cb) {
+ if (this._onconnectionstatechange) {
+ this.removeEventListener('connectionstatechange', this._onconnectionstatechange);
+ delete this._onconnectionstatechange;
+ }
+ if (cb) {
+ this.addEventListener('connectionstatechange', this._onconnectionstatechange = cb);
+ }
+ },
+
+ enumerable: true,
+ configurable: true
+ });
+
+ ['setLocalDescription', 'setRemoteDescription'].forEach(function (method) {
+ var origMethod = proto[method];
+ proto[method] = function () {
+ if (!this._connectionstatechangepoly) {
+ this._connectionstatechangepoly = function (e) {
+ var pc = e.target;
+ if (pc._lastConnectionState !== pc.connectionState) {
+ pc._lastConnectionState = pc.connectionState;
+ var newEvent = new Event('connectionstatechange', e);
+ pc.dispatchEvent(newEvent);
+ }
+ return e;
+ };
+ this.addEventListener('iceconnectionstatechange', this._connectionstatechangepoly);
+ }
+ return origMethod.apply(this, arguments);
+ };
+ });
+}
+
+function removeExtmapAllowMixed(window, browserDetails) {
+ /* remove a=extmap-allow-mixed for webrtc.org < M71 */
+ if (!window.RTCPeerConnection) {
+ return;
+ }
+ if (browserDetails.browser === 'chrome' && browserDetails.version >= 71) {
+ return;
+ }
+ if (browserDetails.browser === 'safari' && browserDetails.version >= 605) {
+ return;
+ }
+ var nativeSRD = window.RTCPeerConnection.prototype.setRemoteDescription;
+ window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription(desc) {
+ if (desc && desc.sdp && desc.sdp.indexOf('\na=extmap-allow-mixed') !== -1) {
+ var sdp = desc.sdp.split('\n').filter(function (line) {
+ return line.trim() !== 'a=extmap-allow-mixed';
+ }).join('\n');
+ // Safari enforces read-only-ness of RTCSessionDescription fields.
+ if (window.RTCSessionDescription && desc instanceof window.RTCSessionDescription) {
+ arguments[0] = new window.RTCSessionDescription({
+ type: desc.type,
+ sdp: sdp
+ });
+ } else {
+ desc.sdp = sdp;
+ }
+ }
+ return nativeSRD.apply(this, arguments);
+ };
+}
+
+function shimAddIceCandidateNullOrEmpty(window, browserDetails) {
+ // Support for addIceCandidate(null or undefined)
+ // as well as addIceCandidate({candidate: "", ...})
+ // https://bugs.chromium.org/p/chromium/issues/detail?id=978582
+ // Note: must be called before other polyfills which change the signature.
+ if (!(window.RTCPeerConnection && window.RTCPeerConnection.prototype)) {
+ return;
+ }
+ var nativeAddIceCandidate = window.RTCPeerConnection.prototype.addIceCandidate;
+ if (!nativeAddIceCandidate || nativeAddIceCandidate.length === 0) {
+ return;
+ }
+ window.RTCPeerConnection.prototype.addIceCandidate = function addIceCandidate() {
+ if (!arguments[0]) {
+ if (arguments[1]) {
+ arguments[1].apply(null);
+ }
+ return Promise.resolve();
+ }
+ // Firefox 68+ emits and processes {candidate: "", ...}, ignore
+ // in older versions.
+ // Native support for ignoring exists for Chrome M77+.
+ // Safari ignores as well, exact version unknown but works in the same
+ // version that also ignores addIceCandidate(null).
+ if ((browserDetails.browser === 'chrome' && browserDetails.version < 78 || browserDetails.browser === 'firefox' && browserDetails.version < 68 || browserDetails.browser === 'safari') && arguments[0] && arguments[0].candidate === '') {
+ return Promise.resolve();
+ }
+ return nativeAddIceCandidate.apply(this, arguments);
+ };
+}
+
+// Note: Make sure to call this ahead of APIs that modify
+// setLocalDescription.length
+function shimParameterlessSetLocalDescription(window, browserDetails) {
+ if (!(window.RTCPeerConnection && window.RTCPeerConnection.prototype)) {
+ return;
+ }
+ var nativeSetLocalDescription = window.RTCPeerConnection.prototype.setLocalDescription;
+ if (!nativeSetLocalDescription || nativeSetLocalDescription.length === 0) {
+ return;
+ }
+ window.RTCPeerConnection.prototype.setLocalDescription = function setLocalDescription() {
+ var _this = this;
+
+ var desc = arguments[0] || {};
+ if ((typeof desc === 'undefined' ? 'undefined' : _typeof(desc)) !== 'object' || desc.type && desc.sdp) {
+ return nativeSetLocalDescription.apply(this, arguments);
+ }
+ // The remaining steps should technically happen when SLD comes off the
+ // RTCPeerConnection's operations chain (not ahead of going on it), but
+ // this is too difficult to shim. Instead, this shim only covers the
+ // common case where the operations chain is empty. This is imperfect, but
+ // should cover many cases. Rationale: Even if we can't reduce the glare
+ // window to zero on imperfect implementations, there's value in tapping
+ // into the perfect negotiation pattern that several browsers support.
+ desc = { type: desc.type, sdp: desc.sdp };
+ if (!desc.type) {
+ switch (this.signalingState) {
+ case 'stable':
+ case 'have-local-offer':
+ case 'have-remote-pranswer':
+ desc.type = 'offer';
+ break;
+ default:
+ desc.type = 'answer';
+ break;
+ }
+ }
+ if (desc.sdp || desc.type !== 'offer' && desc.type !== 'answer') {
+ return nativeSetLocalDescription.apply(this, [desc]);
+ }
+ var func = desc.type === 'offer' ? this.createOffer : this.createAnswer;
+ return func.apply(this).then(function (d) {
+ return nativeSetLocalDescription.apply(_this, [d]);
+ });
+ };
+}
+
+},{"./utils":11,"sdp":12}],7:[function(require,module,exports){
+/*
+ * 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.
+ */
+/* eslint-env node */
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+ value: true
+});
+exports.shimGetDisplayMedia = exports.shimGetUserMedia = undefined;
+
+var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
+
+var _getusermedia = require('./getusermedia');
+
+Object.defineProperty(exports, 'shimGetUserMedia', {
+ enumerable: true,
+ get: function get() {
+ return _getusermedia.shimGetUserMedia;
+ }
+});
+
+var _getdisplaymedia = require('./getdisplaymedia');
+
+Object.defineProperty(exports, 'shimGetDisplayMedia', {
+ enumerable: true,
+ get: function get() {
+ return _getdisplaymedia.shimGetDisplayMedia;
+ }
+});
+exports.shimOnTrack = shimOnTrack;
+exports.shimPeerConnection = shimPeerConnection;
+exports.shimSenderGetStats = shimSenderGetStats;
+exports.shimReceiverGetStats = shimReceiverGetStats;
+exports.shimRemoveStream = shimRemoveStream;
+exports.shimRTCDataChannel = shimRTCDataChannel;
+exports.shimAddTransceiver = shimAddTransceiver;
+exports.shimGetParameters = shimGetParameters;
+exports.shimCreateOffer = shimCreateOffer;
+exports.shimCreateAnswer = shimCreateAnswer;
+
+var _utils = require('../utils');
+
+var utils = _interopRequireWildcard(_utils);
+
+function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
+
+function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
+
+function shimOnTrack(window) {
+ if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCTrackEvent && 'receiver' in window.RTCTrackEvent.prototype && !('transceiver' in window.RTCTrackEvent.prototype)) {
+ Object.defineProperty(window.RTCTrackEvent.prototype, 'transceiver', {
+ get: function get() {
+ return { receiver: this.receiver };
+ }
+ });
+ }
+}
+
+function shimPeerConnection(window, browserDetails) {
+ if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) !== 'object' || !(window.RTCPeerConnection || window.mozRTCPeerConnection)) {
+ return; // probably media.peerconnection.enabled=false in about:config
+ }
+ if (!window.RTCPeerConnection && window.mozRTCPeerConnection) {
+ // very basic support for old versions.
+ window.RTCPeerConnection = window.mozRTCPeerConnection;
+ }
+
+ if (browserDetails.version < 53) {
+ // shim away need for obsolete RTCIceCandidate/RTCSessionDescription.
+ ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'].forEach(function (method) {
+ var nativeMethod = window.RTCPeerConnection.prototype[method];
+ var methodObj = _defineProperty({}, method, function () {
+ arguments[0] = new (method === 'addIceCandidate' ? window.RTCIceCandidate : window.RTCSessionDescription)(arguments[0]);
+ return nativeMethod.apply(this, arguments);
+ });
+ window.RTCPeerConnection.prototype[method] = methodObj[method];
+ });
+ }
+
+ var modernStatsTypes = {
+ inboundrtp: 'inbound-rtp',
+ outboundrtp: 'outbound-rtp',
+ candidatepair: 'candidate-pair',
+ localcandidate: 'local-candidate',
+ remotecandidate: 'remote-candidate'
+ };
+
+ var nativeGetStats = window.RTCPeerConnection.prototype.getStats;
+ window.RTCPeerConnection.prototype.getStats = function getStats() {
+ var _arguments = Array.prototype.slice.call(arguments),
+ selector = _arguments[0],
+ onSucc = _arguments[1],
+ onErr = _arguments[2];
+
+ return nativeGetStats.apply(this, [selector || null]).then(function (stats) {
+ if (browserDetails.version < 53 && !onSucc) {
+ // Shim only promise getStats with spec-hyphens in type names
+ // Leave callback version alone; misc old uses of forEach before Map
+ try {
+ stats.forEach(function (stat) {
+ stat.type = modernStatsTypes[stat.type] || stat.type;
+ });
+ } catch (e) {
+ if (e.name !== 'TypeError') {
+ throw e;
+ }
+ // Avoid TypeError: "type" is read-only, in old versions. 34-43ish
+ stats.forEach(function (stat, i) {
+ stats.set(i, Object.assign({}, stat, {
+ type: modernStatsTypes[stat.type] || stat.type
+ }));
+ });
+ }
+ }
+ return stats;
+ }).then(onSucc, onErr);
+ };
+}
+
+function shimSenderGetStats(window) {
+ if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && window.RTCRtpSender)) {
+ return;
+ }
+ if (window.RTCRtpSender && 'getStats' in window.RTCRtpSender.prototype) {
+ return;
+ }
+ var origGetSenders = window.RTCPeerConnection.prototype.getSenders;
+ if (origGetSenders) {
+ window.RTCPeerConnection.prototype.getSenders = function getSenders() {
+ var _this = this;
+
+ var senders = origGetSenders.apply(this, []);
+ senders.forEach(function (sender) {
+ return sender._pc = _this;
+ });
+ return senders;
+ };
+ }
+
+ var origAddTrack = window.RTCPeerConnection.prototype.addTrack;
+ if (origAddTrack) {
+ window.RTCPeerConnection.prototype.addTrack = function addTrack() {
+ var sender = origAddTrack.apply(this, arguments);
+ sender._pc = this;
+ return sender;
+ };
+ }
+ window.RTCRtpSender.prototype.getStats = function getStats() {
+ return this.track ? this._pc.getStats(this.track) : Promise.resolve(new Map());
+ };
+}
+
+function shimReceiverGetStats(window) {
+ if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && window.RTCRtpSender)) {
+ return;
+ }
+ if (window.RTCRtpSender && 'getStats' in window.RTCRtpReceiver.prototype) {
+ return;
+ }
+ var origGetReceivers = window.RTCPeerConnection.prototype.getReceivers;
+ if (origGetReceivers) {
+ window.RTCPeerConnection.prototype.getReceivers = function getReceivers() {
+ var _this2 = this;
+
+ var receivers = origGetReceivers.apply(this, []);
+ receivers.forEach(function (receiver) {
+ return receiver._pc = _this2;
+ });
+ return receivers;
+ };
+ }
+ utils.wrapPeerConnectionEvent(window, 'track', function (e) {
+ e.receiver._pc = e.srcElement;
+ return e;
+ });
+ window.RTCRtpReceiver.prototype.getStats = function getStats() {
+ return this._pc.getStats(this.track);
+ };
+}
+
+function shimRemoveStream(window) {
+ if (!window.RTCPeerConnection || 'removeStream' in window.RTCPeerConnection.prototype) {
+ return;
+ }
+ window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {
+ var _this3 = this;
+
+ utils.deprecated('removeStream', 'removeTrack');
+ this.getSenders().forEach(function (sender) {
+ if (sender.track && stream.getTracks().includes(sender.track)) {
+ _this3.removeTrack(sender);
+ }
+ });
+ };
+}
+
+function shimRTCDataChannel(window) {
+ // rename DataChannel to RTCDataChannel (native fix in FF60):
+ // https://bugzilla.mozilla.org/show_bug.cgi?id=1173851
+ if (window.DataChannel && !window.RTCDataChannel) {
+ window.RTCDataChannel = window.DataChannel;
+ }
+}
+
+function shimAddTransceiver(window) {
+ // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647
+ // Firefox ignores the init sendEncodings options passed to addTransceiver
+ // https://bugzilla.mozilla.org/show_bug.cgi?id=1396918
+ if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection)) {
+ return;
+ }
+ var origAddTransceiver = window.RTCPeerConnection.prototype.addTransceiver;
+ if (origAddTransceiver) {
+ window.RTCPeerConnection.prototype.addTransceiver = function addTransceiver() {
+ this.setParametersPromises = [];
+ var initParameters = arguments[1];
+ var shouldPerformCheck = initParameters && 'sendEncodings' in initParameters;
+ if (shouldPerformCheck) {
+ // If sendEncodings params are provided, validate grammar
+ initParameters.sendEncodings.forEach(function (encodingParam) {
+ if ('rid' in encodingParam) {
+ var ridRegex = /^[a-z0-9]{0,16}$/i;
+ if (!ridRegex.test(encodingParam.rid)) {
+ throw new TypeError('Invalid RID value provided.');
+ }
+ }
+ if ('scaleResolutionDownBy' in encodingParam) {
+ if (!(parseFloat(encodingParam.scaleResolutionDownBy) >= 1.0)) {
+ throw new RangeError('scale_resolution_down_by must be >= 1.0');
+ }
+ }
+ if ('maxFramerate' in encodingParam) {
+ if (!(parseFloat(encodingParam.maxFramerate) >= 0)) {
+ throw new RangeError('max_framerate must be >= 0.0');
+ }
+ }
+ });
+ }
+ var transceiver = origAddTransceiver.apply(this, arguments);
+ if (shouldPerformCheck) {
+ // Check if the init options were applied. If not we do this in an
+ // asynchronous way and save the promise reference in a global object.
+ // This is an ugly hack, but at the same time is way more robust than
+ // checking the sender parameters before and after the createOffer
+ // Also note that after the createoffer we are not 100% sure that
+ // the params were asynchronously applied so we might miss the
+ // opportunity to recreate offer.
+ var sender = transceiver.sender;
+
+ var params = sender.getParameters();
+ if (!('encodings' in params) ||
+ // Avoid being fooled by patched getParameters() below.
+ params.encodings.length === 1 && Object.keys(params.encodings[0]).length === 0) {
+ params.encodings = initParameters.sendEncodings;
+ sender.sendEncodings = initParameters.sendEncodings;
+ this.setParametersPromises.push(sender.setParameters(params).then(function () {
+ delete sender.sendEncodings;
+ }).catch(function () {
+ delete sender.sendEncodings;
+ }));
+ }
+ }
+ return transceiver;
+ };
+ }
+}
+
+function shimGetParameters(window) {
+ if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCRtpSender)) {
+ return;
+ }
+ var origGetParameters = window.RTCRtpSender.prototype.getParameters;
+ if (origGetParameters) {
+ window.RTCRtpSender.prototype.getParameters = function getParameters() {
+ var params = origGetParameters.apply(this, arguments);
+ if (!('encodings' in params)) {
+ params.encodings = [].concat(this.sendEncodings || [{}]);
+ }
+ return params;
+ };
+ }
+}
+
+function shimCreateOffer(window) {
+ // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647
+ // Firefox ignores the init sendEncodings options passed to addTransceiver
+ // https://bugzilla.mozilla.org/show_bug.cgi?id=1396918
+ if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection)) {
+ return;
+ }
+ var origCreateOffer = window.RTCPeerConnection.prototype.createOffer;
+ window.RTCPeerConnection.prototype.createOffer = function createOffer() {
+ var _this4 = this,
+ _arguments2 = arguments;
+
+ if (this.setParametersPromises && this.setParametersPromises.length) {
+ return Promise.all(this.setParametersPromises).then(function () {
+ return origCreateOffer.apply(_this4, _arguments2);
+ }).finally(function () {
+ _this4.setParametersPromises = [];
+ });
+ }
+ return origCreateOffer.apply(this, arguments);
+ };
+}
+
+function shimCreateAnswer(window) {
+ // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647
+ // Firefox ignores the init sendEncodings options passed to addTransceiver
+ // https://bugzilla.mozilla.org/show_bug.cgi?id=1396918
+ if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection)) {
+ return;
+ }
+ var origCreateAnswer = window.RTCPeerConnection.prototype.createAnswer;
+ window.RTCPeerConnection.prototype.createAnswer = function createAnswer() {
+ var _this5 = this,
+ _arguments3 = arguments;
+
+ if (this.setParametersPromises && this.setParametersPromises.length) {
+ return Promise.all(this.setParametersPromises).then(function () {
+ return origCreateAnswer.apply(_this5, _arguments3);
+ }).finally(function () {
+ _this5.setParametersPromises = [];
+ });
+ }
+ return origCreateAnswer.apply(this, arguments);
+ };
+}
+
+},{"../utils":11,"./getdisplaymedia":8,"./getusermedia":9}],8:[function(require,module,exports){
+/*
+ * Copyright (c) 2018 The adapter.js 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.
+ */
+/* eslint-env node */
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+ value: true
+});
+exports.shimGetDisplayMedia = shimGetDisplayMedia;
+function shimGetDisplayMedia(window, preferredMediaSource) {
+ if (window.navigator.mediaDevices && 'getDisplayMedia' in window.navigator.mediaDevices) {
+ return;
+ }
+ if (!window.navigator.mediaDevices) {
+ return;
+ }
+ window.navigator.mediaDevices.getDisplayMedia = function getDisplayMedia(constraints) {
+ if (!(constraints && constraints.video)) {
+ var err = new DOMException('getDisplayMedia without video ' + 'constraints is undefined');
+ err.name = 'NotFoundError';
+ // from https://heycam.github.io/webidl/#idl-DOMException-error-names
+ err.code = 8;
+ return Promise.reject(err);
+ }
+ if (constraints.video === true) {
+ constraints.video = { mediaSource: preferredMediaSource };
+ } else {
+ constraints.video.mediaSource = preferredMediaSource;
+ }
+ return window.navigator.mediaDevices.getUserMedia(constraints);
+ };
+}
+
+},{}],9:[function(require,module,exports){
+/*
+ * 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.
+ */
+/* eslint-env node */
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+ value: true
+});
+
+var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
+
+exports.shimGetUserMedia = shimGetUserMedia;
+
+var _utils = require('../utils');
+
+var utils = _interopRequireWildcard(_utils);
+
+function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
+
+function shimGetUserMedia(window, browserDetails) {
+ var navigator = window && window.navigator;
+ var MediaStreamTrack = window && window.MediaStreamTrack;
+
+ navigator.getUserMedia = function (constraints, onSuccess, onError) {
+ // Replace Firefox 44+'s deprecation warning with unprefixed version.
+ utils.deprecated('navigator.getUserMedia', 'navigator.mediaDevices.getUserMedia');
+ navigator.mediaDevices.getUserMedia(constraints).then(onSuccess, onError);
+ };
+
+ if (!(browserDetails.version > 55 && 'autoGainControl' in navigator.mediaDevices.getSupportedConstraints())) {
+ var remap = function remap(obj, a, b) {
+ if (a in obj && !(b in obj)) {
+ obj[b] = obj[a];
+ delete obj[a];
+ }
+ };
+
+ var nativeGetUserMedia = navigator.mediaDevices.getUserMedia.bind(navigator.mediaDevices);
+ navigator.mediaDevices.getUserMedia = function (c) {
+ if ((typeof c === 'undefined' ? 'undefined' : _typeof(c)) === 'object' && _typeof(c.audio) === 'object') {
+ c = JSON.parse(JSON.stringify(c));
+ remap(c.audio, 'autoGainControl', 'mozAutoGainControl');
+ remap(c.audio, 'noiseSuppression', 'mozNoiseSuppression');
+ }
+ return nativeGetUserMedia(c);
+ };
+
+ if (MediaStreamTrack && MediaStreamTrack.prototype.getSettings) {
+ var nativeGetSettings = MediaStreamTrack.prototype.getSettings;
+ MediaStreamTrack.prototype.getSettings = function () {
+ var obj = nativeGetSettings.apply(this, arguments);
+ remap(obj, 'mozAutoGainControl', 'autoGainControl');
+ remap(obj, 'mozNoiseSuppression', 'noiseSuppression');
+ return obj;
+ };
+ }
+
+ if (MediaStreamTrack && MediaStreamTrack.prototype.applyConstraints) {
+ var nativeApplyConstraints = MediaStreamTrack.prototype.applyConstraints;
+ MediaStreamTrack.prototype.applyConstraints = function (c) {
+ if (this.kind === 'audio' && (typeof c === 'undefined' ? 'undefined' : _typeof(c)) === 'object') {
+ c = JSON.parse(JSON.stringify(c));
+ remap(c, 'autoGainControl', 'mozAutoGainControl');
+ remap(c, 'noiseSuppression', 'mozNoiseSuppression');
+ }
+ return nativeApplyConstraints.apply(this, [c]);
+ };
+ }
+ }
+}
+
+},{"../utils":11}],10:[function(require,module,exports){
+/*
+ * 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.
+ */
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+ value: true
+});
+
+var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
+
+exports.shimLocalStreamsAPI = shimLocalStreamsAPI;
+exports.shimRemoteStreamsAPI = shimRemoteStreamsAPI;
+exports.shimCallbacksAPI = shimCallbacksAPI;
+exports.shimGetUserMedia = shimGetUserMedia;
+exports.shimConstraints = shimConstraints;
+exports.shimRTCIceServerUrls = shimRTCIceServerUrls;
+exports.shimTrackEventTransceiver = shimTrackEventTransceiver;
+exports.shimCreateOfferLegacy = shimCreateOfferLegacy;
+exports.shimAudioContext = shimAudioContext;
+
+var _utils = require('../utils');
+
+var utils = _interopRequireWildcard(_utils);
+
+function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
+
+function shimLocalStreamsAPI(window) {
+ if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) !== 'object' || !window.RTCPeerConnection) {
+ return;
+ }
+ if (!('getLocalStreams' in window.RTCPeerConnection.prototype)) {
+ window.RTCPeerConnection.prototype.getLocalStreams = function getLocalStreams() {
+ if (!this._localStreams) {
+ this._localStreams = [];
+ }
+ return this._localStreams;
+ };
+ }
+ if (!('addStream' in window.RTCPeerConnection.prototype)) {
+ var _addTrack = window.RTCPeerConnection.prototype.addTrack;
+ window.RTCPeerConnection.prototype.addStream = function addStream(stream) {
+ var _this = this;
+
+ if (!this._localStreams) {
+ this._localStreams = [];
+ }
+ if (!this._localStreams.includes(stream)) {
+ this._localStreams.push(stream);
+ }
+ // Try to emulate Chrome's behaviour of adding in audio-video order.
+ // Safari orders by track id.
+ stream.getAudioTracks().forEach(function (track) {
+ return _addTrack.call(_this, track, stream);
+ });
+ stream.getVideoTracks().forEach(function (track) {
+ return _addTrack.call(_this, track, stream);
+ });
+ };
+
+ window.RTCPeerConnection.prototype.addTrack = function addTrack(track) {
+ var _this2 = this;
+
+ for (var _len = arguments.length, streams = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+ streams[_key - 1] = arguments[_key];
+ }
+
+ if (streams) {
+ streams.forEach(function (stream) {
+ if (!_this2._localStreams) {
+ _this2._localStreams = [stream];
+ } else if (!_this2._localStreams.includes(stream)) {
+ _this2._localStreams.push(stream);
+ }
+ });
+ }
+ return _addTrack.apply(this, arguments);
+ };
+ }
+ if (!('removeStream' in window.RTCPeerConnection.prototype)) {
+ window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {
+ var _this3 = this;
+
+ if (!this._localStreams) {
+ this._localStreams = [];
+ }
+ var index = this._localStreams.indexOf(stream);
+ if (index === -1) {
+ return;
+ }
+ this._localStreams.splice(index, 1);
+ var tracks = stream.getTracks();
+ this.getSenders().forEach(function (sender) {
+ if (tracks.includes(sender.track)) {
+ _this3.removeTrack(sender);
+ }
+ });
+ };
+ }
+}
+
+function shimRemoteStreamsAPI(window) {
+ if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) !== 'object' || !window.RTCPeerConnection) {
+ return;
+ }
+ if (!('getRemoteStreams' in window.RTCPeerConnection.prototype)) {
+ window.RTCPeerConnection.prototype.getRemoteStreams = function getRemoteStreams() {
+ return this._remoteStreams ? this._remoteStreams : [];
+ };
+ }
+ if (!('onaddstream' in window.RTCPeerConnection.prototype)) {
+ Object.defineProperty(window.RTCPeerConnection.prototype, 'onaddstream', {
+ get: function get() {
+ return this._onaddstream;
+ },
+ set: function set(f) {
+ var _this4 = this;
+
+ if (this._onaddstream) {
+ this.removeEventListener('addstream', this._onaddstream);
+ this.removeEventListener('track', this._onaddstreampoly);
+ }
+ this.addEventListener('addstream', this._onaddstream = f);
+ this.addEventListener('track', this._onaddstreampoly = function (e) {
+ e.streams.forEach(function (stream) {
+ if (!_this4._remoteStreams) {
+ _this4._remoteStreams = [];
+ }
+ if (_this4._remoteStreams.includes(stream)) {
+ return;
+ }
+ _this4._remoteStreams.push(stream);
+ var event = new Event('addstream');
+ event.stream = stream;
+ _this4.dispatchEvent(event);
+ });
+ });
+ }
+ });
+ var origSetRemoteDescription = window.RTCPeerConnection.prototype.setRemoteDescription;
+ window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription() {
+ var pc = this;
+ if (!this._onaddstreampoly) {
+ this.addEventListener('track', this._onaddstreampoly = function (e) {
+ e.streams.forEach(function (stream) {
+ if (!pc._remoteStreams) {
+ pc._remoteStreams = [];
+ }
+ if (pc._remoteStreams.indexOf(stream) >= 0) {
+ return;
+ }
+ pc._remoteStreams.push(stream);
+ var event = new Event('addstream');
+ event.stream = stream;
+ pc.dispatchEvent(event);
+ });
+ });
+ }
+ return origSetRemoteDescription.apply(pc, arguments);
+ };
+ }
+}
+
+function shimCallbacksAPI(window) {
+ if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) !== 'object' || !window.RTCPeerConnection) {
+ return;
+ }
+ var prototype = window.RTCPeerConnection.prototype;
+ var origCreateOffer = prototype.createOffer;
+ var origCreateAnswer = prototype.createAnswer;
+ var setLocalDescription = prototype.setLocalDescription;
+ var setRemoteDescription = prototype.setRemoteDescription;
+ var addIceCandidate = prototype.addIceCandidate;
+
+ prototype.createOffer = function createOffer(successCallback, failureCallback) {
+ var options = arguments.length >= 2 ? arguments[2] : arguments[0];
+ var promise = origCreateOffer.apply(this, [options]);
+ if (!failureCallback) {
+ return promise;
+ }
+ promise.then(successCallback, failureCallback);
+ return Promise.resolve();
+ };
+
+ prototype.createAnswer = function createAnswer(successCallback, failureCallback) {
+ var options = arguments.length >= 2 ? arguments[2] : arguments[0];
+ var promise = origCreateAnswer.apply(this, [options]);
+ if (!failureCallback) {
+ return promise;
+ }
+ promise.then(successCallback, failureCallback);
+ return Promise.resolve();
+ };
+
+ var withCallback = function withCallback(description, successCallback, failureCallback) {
+ var promise = setLocalDescription.apply(this, [description]);
+ if (!failureCallback) {
+ return promise;
+ }
+ promise.then(successCallback, failureCallback);
+ return Promise.resolve();
+ };
+ prototype.setLocalDescription = withCallback;
+
+ withCallback = function withCallback(description, successCallback, failureCallback) {
+ var promise = setRemoteDescription.apply(this, [description]);
+ if (!failureCallback) {
+ return promise;
+ }
+ promise.then(successCallback, failureCallback);
+ return Promise.resolve();
+ };
+ prototype.setRemoteDescription = withCallback;
+
+ withCallback = function withCallback(candidate, successCallback, failureCallback) {
+ var promise = addIceCandidate.apply(this, [candidate]);
+ if (!failureCallback) {
+ return promise;
+ }
+ promise.then(successCallback, failureCallback);
+ return Promise.resolve();
+ };
+ prototype.addIceCandidate = withCallback;
+}
+
+function shimGetUserMedia(window) {
+ var navigator = window && window.navigator;
+
+ if (navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {
+ // shim not needed in Safari 12.1
+ var mediaDevices = navigator.mediaDevices;
+ var _getUserMedia = mediaDevices.getUserMedia.bind(mediaDevices);
+ navigator.mediaDevices.getUserMedia = function (constraints) {
+ return _getUserMedia(shimConstraints(constraints));
+ };
+ }
+
+ if (!navigator.getUserMedia && navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {
+ navigator.getUserMedia = function getUserMedia(constraints, cb, errcb) {
+ navigator.mediaDevices.getUserMedia(constraints).then(cb, errcb);
+ }.bind(navigator);
+ }
+}
+
+function shimConstraints(constraints) {
+ if (constraints && constraints.video !== undefined) {
+ return Object.assign({}, constraints, { video: utils.compactObject(constraints.video) });
+ }
+
+ return constraints;
+}
+
+function shimRTCIceServerUrls(window) {
+ if (!window.RTCPeerConnection) {
+ return;
+ }
+ // migrate from non-spec RTCIceServer.url to RTCIceServer.urls
+ var OrigPeerConnection = window.RTCPeerConnection;
+ window.RTCPeerConnection = function RTCPeerConnection(pcConfig, pcConstraints) {
+ if (pcConfig && pcConfig.iceServers) {
+ var newIceServers = [];
+ for (var i = 0; i < pcConfig.iceServers.length; i++) {
+ var server = pcConfig.iceServers[i];
+ if (!server.hasOwnProperty('urls') && server.hasOwnProperty('url')) {
+ utils.deprecated('RTCIceServer.url', 'RTCIceServer.urls');
+ server = JSON.parse(JSON.stringify(server));
+ server.urls = server.url;
+ delete server.url;
+ newIceServers.push(server);
+ } else {
+ newIceServers.push(pcConfig.iceServers[i]);
+ }
+ }
+ pcConfig.iceServers = newIceServers;
+ }
+ return new OrigPeerConnection(pcConfig, pcConstraints);
+ };
+ window.RTCPeerConnection.prototype = OrigPeerConnection.prototype;
+ // wrap static methods. Currently just generateCertificate.
+ if ('generateCertificate' in OrigPeerConnection) {
+ Object.defineProperty(window.RTCPeerConnection, 'generateCertificate', {
+ get: function get() {
+ return OrigPeerConnection.generateCertificate;
+ }
+ });
+ }
+}
+
+function shimTrackEventTransceiver(window) {
+ // Add event.transceiver member over deprecated event.receiver
+ if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCTrackEvent && 'receiver' in window.RTCTrackEvent.prototype && !('transceiver' in window.RTCTrackEvent.prototype)) {
+ Object.defineProperty(window.RTCTrackEvent.prototype, 'transceiver', {
+ get: function get() {
+ return { receiver: this.receiver };
+ }
+ });
+ }
+}
+
+function shimCreateOfferLegacy(window) {
+ var origCreateOffer = window.RTCPeerConnection.prototype.createOffer;
+ window.RTCPeerConnection.prototype.createOffer = function createOffer(offerOptions) {
+ if (offerOptions) {
+ if (typeof offerOptions.offerToReceiveAudio !== 'undefined') {
+ // support bit values
+ offerOptions.offerToReceiveAudio = !!offerOptions.offerToReceiveAudio;
+ }
+ var audioTransceiver = this.getTransceivers().find(function (transceiver) {
+ return transceiver.receiver.track.kind === 'audio';
+ });
+ if (offerOptions.offerToReceiveAudio === false && audioTransceiver) {
+ if (audioTransceiver.direction === 'sendrecv') {
+ if (audioTransceiver.setDirection) {
+ audioTransceiver.setDirection('sendonly');
+ } else {
+ audioTransceiver.direction = 'sendonly';
+ }
+ } else if (audioTransceiver.direction === 'recvonly') {
+ if (audioTransceiver.setDirection) {
+ audioTransceiver.setDirection('inactive');
+ } else {
+ audioTransceiver.direction = 'inactive';
+ }
+ }
+ } else if (offerOptions.offerToReceiveAudio === true && !audioTransceiver) {
+ this.addTransceiver('audio', { direction: 'recvonly' });
+ }
+
+ if (typeof offerOptions.offerToReceiveVideo !== 'undefined') {
+ // support bit values
+ offerOptions.offerToReceiveVideo = !!offerOptions.offerToReceiveVideo;
+ }
+ var videoTransceiver = this.getTransceivers().find(function (transceiver) {
+ return transceiver.receiver.track.kind === 'video';
+ });
+ if (offerOptions.offerToReceiveVideo === false && videoTransceiver) {
+ if (videoTransceiver.direction === 'sendrecv') {
+ if (videoTransceiver.setDirection) {
+ videoTransceiver.setDirection('sendonly');
+ } else {
+ videoTransceiver.direction = 'sendonly';
+ }
+ } else if (videoTransceiver.direction === 'recvonly') {
+ if (videoTransceiver.setDirection) {
+ videoTransceiver.setDirection('inactive');
+ } else {
+ videoTransceiver.direction = 'inactive';
+ }
+ }
+ } else if (offerOptions.offerToReceiveVideo === true && !videoTransceiver) {
+ this.addTransceiver('video', { direction: 'recvonly' });
+ }
+ }
+ return origCreateOffer.apply(this, arguments);
+ };
+}
+
+function shimAudioContext(window) {
+ if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) !== 'object' || window.AudioContext) {
+ return;
+ }
+ window.AudioContext = window.webkitAudioContext;
+}
+
+},{"../utils":11}],11:[function(require,module,exports){
+/*
+ * 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.
+ */
+/* eslint-env node */
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+ value: true
+});
+
+var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
+
+exports.extractVersion = extractVersion;
+exports.wrapPeerConnectionEvent = wrapPeerConnectionEvent;
+exports.disableLog = disableLog;
+exports.disableWarnings = disableWarnings;
+exports.log = log;
+exports.deprecated = deprecated;
+exports.detectBrowser = detectBrowser;
+exports.compactObject = compactObject;
+exports.walkStats = walkStats;
+exports.filterStats = filterStats;
+
+function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
+
+var logDisabled_ = true;
+var deprecationWarnings_ = true;
+
+/**
+ * Extract browser version out of the provided user agent string.
+ *
+ * @param {!string} uastring userAgent string.
+ * @param {!string} expr Regular expression used as match criteria.
+ * @param {!number} pos position in the version string to be returned.
+ * @return {!number} browser version.
+ */
+function extractVersion(uastring, expr, pos) {
+ var match = uastring.match(expr);
+ return match && match.length >= pos && parseInt(match[pos], 10);
+}
+
+// Wraps the peerconnection event eventNameToWrap in a function
+// which returns the modified event object (or false to prevent
+// the event).
+function wrapPeerConnectionEvent(window, eventNameToWrap, wrapper) {
+ if (!window.RTCPeerConnection) {
+ return;
+ }
+ var proto = window.RTCPeerConnection.prototype;
+ var nativeAddEventListener = proto.addEventListener;
+ proto.addEventListener = function (nativeEventName, cb) {
+ if (nativeEventName !== eventNameToWrap) {
+ return nativeAddEventListener.apply(this, arguments);
+ }
+ var wrappedCallback = function wrappedCallback(e) {
+ var modifiedEvent = wrapper(e);
+ if (modifiedEvent) {
+ if (cb.handleEvent) {
+ cb.handleEvent(modifiedEvent);
+ } else {
+ cb(modifiedEvent);
+ }
+ }
+ };
+ this._eventMap = this._eventMap || {};
+ if (!this._eventMap[eventNameToWrap]) {
+ this._eventMap[eventNameToWrap] = new Map();
+ }
+ this._eventMap[eventNameToWrap].set(cb, wrappedCallback);
+ return nativeAddEventListener.apply(this, [nativeEventName, wrappedCallback]);
+ };
+
+ var nativeRemoveEventListener = proto.removeEventListener;
+ proto.removeEventListener = function (nativeEventName, cb) {
+ if (nativeEventName !== eventNameToWrap || !this._eventMap || !this._eventMap[eventNameToWrap]) {
+ return nativeRemoveEventListener.apply(this, arguments);
+ }
+ if (!this._eventMap[eventNameToWrap].has(cb)) {
+ return nativeRemoveEventListener.apply(this, arguments);
+ }
+ var unwrappedCb = this._eventMap[eventNameToWrap].get(cb);
+ this._eventMap[eventNameToWrap].delete(cb);
+ if (this._eventMap[eventNameToWrap].size === 0) {
+ delete this._eventMap[eventNameToWrap];
+ }
+ if (Object.keys(this._eventMap).length === 0) {
+ delete this._eventMap;
+ }
+ return nativeRemoveEventListener.apply(this, [nativeEventName, unwrappedCb]);
+ };
+
+ Object.defineProperty(proto, 'on' + eventNameToWrap, {
+ get: function get() {
+ return this['_on' + eventNameToWrap];
+ },
+ set: function set(cb) {
+ if (this['_on' + eventNameToWrap]) {
+ this.removeEventListener(eventNameToWrap, this['_on' + eventNameToWrap]);
+ delete this['_on' + eventNameToWrap];
+ }
+ if (cb) {
+ this.addEventListener(eventNameToWrap, this['_on' + eventNameToWrap] = cb);
+ }
+ },
+
+ enumerable: true,
+ configurable: true
+ });
+}
+
+function disableLog(bool) {
+ if (typeof bool !== 'boolean') {
+ return new Error('Argument type: ' + (typeof bool === 'undefined' ? 'undefined' : _typeof(bool)) + '. Please use a boolean.');
+ }
+ logDisabled_ = bool;
+ return bool ? 'adapter.js logging disabled' : 'adapter.js logging enabled';
+}
+
+/**
+ * Disable or enable deprecation warnings
+ * @param {!boolean} bool set to true to disable warnings.
+ */
+function disableWarnings(bool) {
+ if (typeof bool !== 'boolean') {
+ return new Error('Argument type: ' + (typeof bool === 'undefined' ? 'undefined' : _typeof(bool)) + '. Please use a boolean.');
+ }
+ deprecationWarnings_ = !bool;
+ return 'adapter.js deprecation warnings ' + (bool ? 'disabled' : 'enabled');
+}
+
+function log() {
+ if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object') {
+ if (logDisabled_) {
+ return;
+ }
+ if (typeof console !== 'undefined' && typeof console.log === 'function') {
+ console.log.apply(console, arguments);
+ }
+ }
+}
+
+/**
+ * Shows a deprecation warning suggesting the modern and spec-compatible API.
+ */
+function deprecated(oldMethod, newMethod) {
+ if (!deprecationWarnings_) {
+ return;
+ }
+ console.warn(oldMethod + ' is deprecated, please use ' + newMethod + ' instead.');
+}
+
+/**
+ * Browser detector.
+ *
+ * @return {object} result containing browser and version
+ * properties.
+ */
+function detectBrowser(window) {
+ // Returned result object.
+ var result = { browser: null, version: null };
+
+ // Fail early if it's not a browser
+ if (typeof window === 'undefined' || !window.navigator) {
+ result.browser = 'Not a browser.';
+ return result;
+ }
+
+ var navigator = window.navigator;
+
+
+ if (navigator.mozGetUserMedia) {
+ // Firefox.
+ result.browser = 'firefox';
+ result.version = extractVersion(navigator.userAgent, /Firefox\/(\d+)\./, 1);
+ } else if (navigator.webkitGetUserMedia || window.isSecureContext === false && window.webkitRTCPeerConnection && !window.RTCIceGatherer) {
+ // Chrome, Chromium, Webview, Opera.
+ // Version matches Chrome/WebRTC version.
+ // Chrome 74 removed webkitGetUserMedia on http as well so we need the
+ // more complicated fallback to webkitRTCPeerConnection.
+ result.browser = 'chrome';
+ result.version = extractVersion(navigator.userAgent, /Chrom(e|ium)\/(\d+)\./, 2);
+ } else if (window.RTCPeerConnection && navigator.userAgent.match(/AppleWebKit\/(\d+)\./)) {
+ // Safari.
+ result.browser = 'safari';
+ result.version = extractVersion(navigator.userAgent, /AppleWebKit\/(\d+)\./, 1);
+ result.supportsUnifiedPlan = window.RTCRtpTransceiver && 'currentDirection' in window.RTCRtpTransceiver.prototype;
+ } else {
+ // Default fallthrough: not supported.
+ result.browser = 'Not a supported browser.';
+ return result;
+ }
+
+ return result;
+}
+
+/**
+ * Checks if something is an object.
+ *
+ * @param {*} val The something you want to check.
+ * @return true if val is an object, false otherwise.
+ */
+function isObject(val) {
+ return Object.prototype.toString.call(val) === '[object Object]';
+}
+
+/**
+ * Remove all empty objects and undefined values
+ * from a nested object -- an enhanced and vanilla version
+ * of Lodash's `compact`.
+ */
+function compactObject(data) {
+ if (!isObject(data)) {
+ return data;
+ }
+
+ return Object.keys(data).reduce(function (accumulator, key) {
+ var isObj = isObject(data[key]);
+ var value = isObj ? compactObject(data[key]) : data[key];
+ var isEmptyObject = isObj && !Object.keys(value).length;
+ if (value === undefined || isEmptyObject) {
+ return accumulator;
+ }
+ return Object.assign(accumulator, _defineProperty({}, key, value));
+ }, {});
+}
+
+/* iterates the stats graph recursively. */
+function walkStats(stats, base, resultSet) {
+ if (!base || resultSet.has(base.id)) {
+ return;
+ }
+ resultSet.set(base.id, base);
+ Object.keys(base).forEach(function (name) {
+ if (name.endsWith('Id')) {
+ walkStats(stats, stats.get(base[name]), resultSet);
+ } else if (name.endsWith('Ids')) {
+ base[name].forEach(function (id) {
+ walkStats(stats, stats.get(id), resultSet);
+ });
+ }
+ });
+}
+
+/* filter getStats for a sender/receiver track. */
+function filterStats(result, track, outbound) {
+ var streamStatsType = outbound ? 'outbound-rtp' : 'inbound-rtp';
+ var filteredResult = new Map();
+ if (track === null) {
+ return filteredResult;
+ }
+ var trackStats = [];
+ result.forEach(function (value) {
+ if (value.type === 'track' && value.trackIdentifier === track.id) {
+ trackStats.push(value);
+ }
+ });
+ trackStats.forEach(function (trackStat) {
+ result.forEach(function (stats) {
+ if (stats.type === streamStatsType && stats.trackId === trackStat.id) {
+ walkStats(result, stats, filteredResult);
+ }
+ });
+ });
+ return filteredResult;
+}
+
+},{}],12:[function(require,module,exports){
+/* eslint-env node */
+'use strict';
+
+// SDP helpers.
+
+var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
+
+var SDPUtils = {};
+
+// Generate an alphanumeric identifier for cname or mids.
+// TODO: use UUIDs instead? https://gist.github.com/jed/982883
+SDPUtils.generateIdentifier = function () {
+ return Math.random().toString(36).substr(2, 10);
+};
+
+// The RTCP CNAME used by all peerconnections from the same JS.
+SDPUtils.localCName = SDPUtils.generateIdentifier();
+
+// Splits SDP into lines, dealing with both CRLF and LF.
+SDPUtils.splitLines = function (blob) {
+ return blob.trim().split('\n').map(function (line) {
+ return line.trim();
+ });
+};
+// Splits SDP into sessionpart and mediasections. Ensures CRLF.
+SDPUtils.splitSections = function (blob) {
+ var parts = blob.split('\nm=');
+ return parts.map(function (part, index) {
+ return (index > 0 ? 'm=' + part : part).trim() + '\r\n';
+ });
+};
+
+// Returns the session description.
+SDPUtils.getDescription = function (blob) {
+ var sections = SDPUtils.splitSections(blob);
+ return sections && sections[0];
+};
+
+// Returns the individual media sections.
+SDPUtils.getMediaSections = function (blob) {
+ var sections = SDPUtils.splitSections(blob);
+ sections.shift();
+ return sections;
+};
+
+// Returns lines that start with a certain prefix.
+SDPUtils.matchPrefix = function (blob, prefix) {
+ return SDPUtils.splitLines(blob).filter(function (line) {
+ return line.indexOf(prefix) === 0;
+ });
+};
+
+// Parses an ICE candidate line. Sample input:
+// candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8
+// rport 55996"
+// Input can be prefixed with a=.
+SDPUtils.parseCandidate = function (line) {
+ var parts = void 0;
+ // Parse both variants.
+ if (line.indexOf('a=candidate:') === 0) {
+ parts = line.substring(12).split(' ');
+ } else {
+ parts = line.substring(10).split(' ');
+ }
+
+ var candidate = {
+ foundation: parts[0],
+ component: { 1: 'rtp', 2: 'rtcp' }[parts[1]] || parts[1],
+ protocol: parts[2].toLowerCase(),
+ priority: parseInt(parts[3], 10),
+ ip: parts[4],
+ address: parts[4], // address is an alias for ip.
+ port: parseInt(parts[5], 10),
+ // skip parts[6] == 'typ'
+ type: parts[7]
+ };
+
+ for (var i = 8; i < parts.length; i += 2) {
+ switch (parts[i]) {
+ case 'raddr':
+ candidate.relatedAddress = parts[i + 1];
+ break;
+ case 'rport':
+ candidate.relatedPort = parseInt(parts[i + 1], 10);
+ break;
+ case 'tcptype':
+ candidate.tcpType = parts[i + 1];
+ break;
+ case 'ufrag':
+ candidate.ufrag = parts[i + 1]; // for backward compatibility.
+ candidate.usernameFragment = parts[i + 1];
+ break;
+ default:
+ // extension handling, in particular ufrag. Don't overwrite.
+ if (candidate[parts[i]] === undefined) {
+ candidate[parts[i]] = parts[i + 1];
+ }
+ break;
+ }
+ }
+ return candidate;
+};
+
+// Translates a candidate object into SDP candidate attribute.
+// This does not include the a= prefix!
+SDPUtils.writeCandidate = function (candidate) {
+ var sdp = [];
+ sdp.push(candidate.foundation);
+
+ var component = candidate.component;
+ if (component === 'rtp') {
+ sdp.push(1);
+ } else if (component === 'rtcp') {
+ sdp.push(2);
+ } else {
+ sdp.push(component);
+ }
+ sdp.push(candidate.protocol.toUpperCase());
+ sdp.push(candidate.priority);
+ sdp.push(candidate.address || candidate.ip);
+ sdp.push(candidate.port);
+
+ var type = candidate.type;
+ sdp.push('typ');
+ sdp.push(type);
+ if (type !== 'host' && candidate.relatedAddress && candidate.relatedPort) {
+ sdp.push('raddr');
+ sdp.push(candidate.relatedAddress);
+ sdp.push('rport');
+ sdp.push(candidate.relatedPort);
+ }
+ if (candidate.tcpType && candidate.protocol.toLowerCase() === 'tcp') {
+ sdp.push('tcptype');
+ sdp.push(candidate.tcpType);
+ }
+ if (candidate.usernameFragment || candidate.ufrag) {
+ sdp.push('ufrag');
+ sdp.push(candidate.usernameFragment || candidate.ufrag);
+ }
+ return 'candidate:' + sdp.join(' ');
+};
+
+// Parses an ice-options line, returns an array of option tags.
+// Sample input:
+// a=ice-options:foo bar
+SDPUtils.parseIceOptions = function (line) {
+ return line.substr(14).split(' ');
+};
+
+// Parses a rtpmap line, returns RTCRtpCoddecParameters. Sample input:
+// a=rtpmap:111 opus/48000/2
+SDPUtils.parseRtpMap = function (line) {
+ var parts = line.substr(9).split(' ');
+ var parsed = {
+ payloadType: parseInt(parts.shift(), 10) // was: id
+ };
+
+ parts = parts[0].split('/');
+
+ parsed.name = parts[0];
+ parsed.clockRate = parseInt(parts[1], 10); // was: clockrate
+ parsed.channels = parts.length === 3 ? parseInt(parts[2], 10) : 1;
+ // legacy alias, got renamed back to channels in ORTC.
+ parsed.numChannels = parsed.channels;
+ return parsed;
+};
+
+// Generates a rtpmap line from RTCRtpCodecCapability or
+// RTCRtpCodecParameters.
+SDPUtils.writeRtpMap = function (codec) {
+ var pt = codec.payloadType;
+ if (codec.preferredPayloadType !== undefined) {
+ pt = codec.preferredPayloadType;
+ }
+ var channels = codec.channels || codec.numChannels || 1;
+ return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate + (channels !== 1 ? '/' + channels : '') + '\r\n';
+};
+
+// Parses a extmap line (headerextension from RFC 5285). Sample input:
+// a=extmap:2 urn:ietf:params:rtp-hdrext:toffset
+// a=extmap:2/sendonly urn:ietf:params:rtp-hdrext:toffset
+SDPUtils.parseExtmap = function (line) {
+ var parts = line.substr(9).split(' ');
+ return {
+ id: parseInt(parts[0], 10),
+ direction: parts[0].indexOf('/') > 0 ? parts[0].split('/')[1] : 'sendrecv',
+ uri: parts[1]
+ };
+};
+
+// Generates an extmap line from RTCRtpHeaderExtensionParameters or
+// RTCRtpHeaderExtension.
+SDPUtils.writeExtmap = function (headerExtension) {
+ return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) + (headerExtension.direction && headerExtension.direction !== 'sendrecv' ? '/' + headerExtension.direction : '') + ' ' + headerExtension.uri + '\r\n';
+};
+
+// Parses a fmtp line, returns dictionary. Sample input:
+// a=fmtp:96 vbr=on;cng=on
+// Also deals with vbr=on; cng=on
+SDPUtils.parseFmtp = function (line) {
+ var parsed = {};
+ var kv = void 0;
+ var parts = line.substr(line.indexOf(' ') + 1).split(';');
+ for (var j = 0; j < parts.length; j++) {
+ kv = parts[j].trim().split('=');
+ parsed[kv[0].trim()] = kv[1];
+ }
+ return parsed;
+};
+
+// Generates a fmtp line from RTCRtpCodecCapability or RTCRtpCodecParameters.
+SDPUtils.writeFmtp = function (codec) {
+ var line = '';
+ var pt = codec.payloadType;
+ if (codec.preferredPayloadType !== undefined) {
+ pt = codec.preferredPayloadType;
+ }
+ if (codec.parameters && Object.keys(codec.parameters).length) {
+ var params = [];
+ Object.keys(codec.parameters).forEach(function (param) {
+ if (codec.parameters[param] !== undefined) {
+ params.push(param + '=' + codec.parameters[param]);
+ } else {
+ params.push(param);
+ }
+ });
+ line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\r\n';
+ }
+ return line;
+};
+
+// Parses a rtcp-fb line, returns RTCPRtcpFeedback object. Sample input:
+// a=rtcp-fb:98 nack rpsi
+SDPUtils.parseRtcpFb = function (line) {
+ var parts = line.substr(line.indexOf(' ') + 1).split(' ');
+ return {
+ type: parts.shift(),
+ parameter: parts.join(' ')
+ };
+};
+
+// Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters.
+SDPUtils.writeRtcpFb = function (codec) {
+ var lines = '';
+ var pt = codec.payloadType;
+ if (codec.preferredPayloadType !== undefined) {
+ pt = codec.preferredPayloadType;
+ }
+ if (codec.rtcpFeedback && codec.rtcpFeedback.length) {
+ // FIXME: special handling for trr-int?
+ codec.rtcpFeedback.forEach(function (fb) {
+ lines += 'a=rtcp-fb:' + pt + ' ' + fb.type + (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') + '\r\n';
+ });
+ }
+ return lines;
+};
+
+// Parses a RFC 5576 ssrc media attribute. Sample input:
+// a=ssrc:3735928559 cname:something
+SDPUtils.parseSsrcMedia = function (line) {
+ var sp = line.indexOf(' ');
+ var parts = {
+ ssrc: parseInt(line.substr(7, sp - 7), 10)
+ };
+ var colon = line.indexOf(':', sp);
+ if (colon > -1) {
+ parts.attribute = line.substr(sp + 1, colon - sp - 1);
+ parts.value = line.substr(colon + 1);
+ } else {
+ parts.attribute = line.substr(sp + 1);
+ }
+ return parts;
+};
+
+// Parse a ssrc-group line (see RFC 5576). Sample input:
+// a=ssrc-group:semantics 12 34
+SDPUtils.parseSsrcGroup = function (line) {
+ var parts = line.substr(13).split(' ');
+ return {
+ semantics: parts.shift(),
+ ssrcs: parts.map(function (ssrc) {
+ return parseInt(ssrc, 10);
+ })
+ };
+};
+
+// Extracts the MID (RFC 5888) from a media section.
+// Returns the MID or undefined if no mid line was found.
+SDPUtils.getMid = function (mediaSection) {
+ var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:')[0];
+ if (mid) {
+ return mid.substr(6);
+ }
+};
+
+// Parses a fingerprint line for DTLS-SRTP.
+SDPUtils.parseFingerprint = function (line) {
+ var parts = line.substr(14).split(' ');
+ return {
+ algorithm: parts[0].toLowerCase(), // algorithm is case-sensitive in Edge.
+ value: parts[1].toUpperCase() // the definition is upper-case in RFC 4572.
+ };
+};
+
+// Extracts DTLS parameters from SDP media section or sessionpart.
+// FIXME: for consistency with other functions this should only
+// get the fingerprint line as input. See also getIceParameters.
+SDPUtils.getDtlsParameters = function (mediaSection, sessionpart) {
+ var lines = SDPUtils.matchPrefix(mediaSection + sessionpart, 'a=fingerprint:');
+ // Note: a=setup line is ignored since we use the 'auto' role in Edge.
+ return {
+ role: 'auto',
+ fingerprints: lines.map(SDPUtils.parseFingerprint)
+ };
+};
+
+// Serializes DTLS parameters to SDP.
+SDPUtils.writeDtlsParameters = function (params, setupType) {
+ var sdp = 'a=setup:' + setupType + '\r\n';
+ params.fingerprints.forEach(function (fp) {
+ sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\r\n';
+ });
+ return sdp;
+};
+
+// Parses a=crypto lines into
+// https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#dictionary-rtcsrtpsdesparameters-members
+SDPUtils.parseCryptoLine = function (line) {
+ var parts = line.substr(9).split(' ');
+ return {
+ tag: parseInt(parts[0], 10),
+ cryptoSuite: parts[1],
+ keyParams: parts[2],
+ sessionParams: parts.slice(3)
+ };
+};
+
+SDPUtils.writeCryptoLine = function (parameters) {
+ return 'a=crypto:' + parameters.tag + ' ' + parameters.cryptoSuite + ' ' + (_typeof(parameters.keyParams) === 'object' ? SDPUtils.writeCryptoKeyParams(parameters.keyParams) : parameters.keyParams) + (parameters.sessionParams ? ' ' + parameters.sessionParams.join(' ') : '') + '\r\n';
+};
+
+// Parses the crypto key parameters into
+// https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#rtcsrtpkeyparam*
+SDPUtils.parseCryptoKeyParams = function (keyParams) {
+ if (keyParams.indexOf('inline:') !== 0) {
+ return null;
+ }
+ var parts = keyParams.substr(7).split('|');
+ return {
+ keyMethod: 'inline',
+ keySalt: parts[0],
+ lifeTime: parts[1],
+ mkiValue: parts[2] ? parts[2].split(':')[0] : undefined,
+ mkiLength: parts[2] ? parts[2].split(':')[1] : undefined
+ };
+};
+
+SDPUtils.writeCryptoKeyParams = function (keyParams) {
+ return keyParams.keyMethod + ':' + keyParams.keySalt + (keyParams.lifeTime ? '|' + keyParams.lifeTime : '') + (keyParams.mkiValue && keyParams.mkiLength ? '|' + keyParams.mkiValue + ':' + keyParams.mkiLength : '');
+};
+
+// Extracts all SDES parameters.
+SDPUtils.getCryptoParameters = function (mediaSection, sessionpart) {
+ var lines = SDPUtils.matchPrefix(mediaSection + sessionpart, 'a=crypto:');
+ return lines.map(SDPUtils.parseCryptoLine);
+};
+
+// Parses ICE information from SDP media section or sessionpart.
+// FIXME: for consistency with other functions this should only
+// get the ice-ufrag and ice-pwd lines as input.
+SDPUtils.getIceParameters = function (mediaSection, sessionpart) {
+ var ufrag = SDPUtils.matchPrefix(mediaSection + sessionpart, 'a=ice-ufrag:')[0];
+ var pwd = SDPUtils.matchPrefix(mediaSection + sessionpart, 'a=ice-pwd:')[0];
+ if (!(ufrag && pwd)) {
+ return null;
+ }
+ return {
+ usernameFragment: ufrag.substr(12),
+ password: pwd.substr(10)
+ };
+};
+
+// Serializes ICE parameters to SDP.
+SDPUtils.writeIceParameters = function (params) {
+ var sdp = 'a=ice-ufrag:' + params.usernameFragment + '\r\n' + 'a=ice-pwd:' + params.password + '\r\n';
+ if (params.iceLite) {
+ sdp += 'a=ice-lite\r\n';
+ }
+ return sdp;
+};
+
+// Parses the SDP media section and returns RTCRtpParameters.
+SDPUtils.parseRtpParameters = function (mediaSection) {
+ var description = {
+ codecs: [],
+ headerExtensions: [],
+ fecMechanisms: [],
+ rtcp: []
+ };
+ var lines = SDPUtils.splitLines(mediaSection);
+ var mline = lines[0].split(' ');
+ for (var i = 3; i < mline.length; i++) {
+ // find all codecs from mline[3..]
+ var pt = mline[i];
+ var rtpmapline = SDPUtils.matchPrefix(mediaSection, 'a=rtpmap:' + pt + ' ')[0];
+ if (rtpmapline) {
+ var codec = SDPUtils.parseRtpMap(rtpmapline);
+ var fmtps = SDPUtils.matchPrefix(mediaSection, 'a=fmtp:' + pt + ' ');
+ // Only the first a=fmtp:<pt> is considered.
+ codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {};
+ codec.rtcpFeedback = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-fb:' + pt + ' ').map(SDPUtils.parseRtcpFb);
+ description.codecs.push(codec);
+ // parse FEC mechanisms from rtpmap lines.
+ switch (codec.name.toUpperCase()) {
+ case 'RED':
+ case 'ULPFEC':
+ description.fecMechanisms.push(codec.name.toUpperCase());
+ break;
+ default:
+ // only RED and ULPFEC are recognized as FEC mechanisms.
+ break;
+ }
+ }
+ }
+ SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(function (line) {
+ description.headerExtensions.push(SDPUtils.parseExtmap(line));
+ });
+ // FIXME: parse rtcp.
+ return description;
+};
+
+// Generates parts of the SDP media section describing the capabilities /
+// parameters.
+SDPUtils.writeRtpDescription = function (kind, caps) {
+ var sdp = '';
+
+ // Build the mline.
+ sdp += 'm=' + kind + ' ';
+ sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs.
+ sdp += ' UDP/TLS/RTP/SAVPF ';
+ sdp += caps.codecs.map(function (codec) {
+ if (codec.preferredPayloadType !== undefined) {
+ return codec.preferredPayloadType;
+ }
+ return codec.payloadType;
+ }).join(' ') + '\r\n';
+
+ sdp += 'c=IN IP4 0.0.0.0\r\n';
+ sdp += 'a=rtcp:9 IN IP4 0.0.0.0\r\n';
+
+ // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb.
+ caps.codecs.forEach(function (codec) {
+ sdp += SDPUtils.writeRtpMap(codec);
+ sdp += SDPUtils.writeFmtp(codec);
+ sdp += SDPUtils.writeRtcpFb(codec);
+ });
+ var maxptime = 0;
+ caps.codecs.forEach(function (codec) {
+ if (codec.maxptime > maxptime) {
+ maxptime = codec.maxptime;
+ }
+ });
+ if (maxptime > 0) {
+ sdp += 'a=maxptime:' + maxptime + '\r\n';
+ }
+
+ if (caps.headerExtensions) {
+ caps.headerExtensions.forEach(function (extension) {
+ sdp += SDPUtils.writeExtmap(extension);
+ });
+ }
+ // FIXME: write fecMechanisms.
+ return sdp;
+};
+
+// Parses the SDP media section and returns an array of
+// RTCRtpEncodingParameters.
+SDPUtils.parseRtpEncodingParameters = function (mediaSection) {
+ var encodingParameters = [];
+ var description = SDPUtils.parseRtpParameters(mediaSection);
+ var hasRed = description.fecMechanisms.indexOf('RED') !== -1;
+ var hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1;
+
+ // filter a=ssrc:... cname:, ignore PlanB-msid
+ var ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:').map(function (line) {
+ return SDPUtils.parseSsrcMedia(line);
+ }).filter(function (parts) {
+ return parts.attribute === 'cname';
+ });
+ var primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc;
+ var secondarySsrc = void 0;
+
+ var flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID').map(function (line) {
+ var parts = line.substr(17).split(' ');
+ return parts.map(function (part) {
+ return parseInt(part, 10);
+ });
+ });
+ if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) {
+ secondarySsrc = flows[0][1];
+ }
+
+ description.codecs.forEach(function (codec) {
+ if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) {
+ var encParam = {
+ ssrc: primarySsrc,
+ codecPayloadType: parseInt(codec.parameters.apt, 10)
+ };
+ if (primarySsrc && secondarySsrc) {
+ encParam.rtx = { ssrc: secondarySsrc };
+ }
+ encodingParameters.push(encParam);
+ if (hasRed) {
+ encParam = JSON.parse(JSON.stringify(encParam));
+ encParam.fec = {
+ ssrc: primarySsrc,
+ mechanism: hasUlpfec ? 'red+ulpfec' : 'red'
+ };
+ encodingParameters.push(encParam);
+ }
+ }
+ });
+ if (encodingParameters.length === 0 && primarySsrc) {
+ encodingParameters.push({
+ ssrc: primarySsrc
+ });
+ }
+
+ // we support both b=AS and b=TIAS but interpret AS as TIAS.
+ var bandwidth = SDPUtils.matchPrefix(mediaSection, 'b=');
+ if (bandwidth.length) {
+ if (bandwidth[0].indexOf('b=TIAS:') === 0) {
+ bandwidth = parseInt(bandwidth[0].substr(7), 10);
+ } else if (bandwidth[0].indexOf('b=AS:') === 0) {
+ // use formula from JSEP to convert b=AS to TIAS value.
+ bandwidth = parseInt(bandwidth[0].substr(5), 10) * 1000 * 0.95 - 50 * 40 * 8;
+ } else {
+ bandwidth = undefined;
+ }
+ encodingParameters.forEach(function (params) {
+ params.maxBitrate = bandwidth;
+ });
+ }
+ return encodingParameters;
+};
+
+// parses http://draft.ortc.org/#rtcrtcpparameters*
+SDPUtils.parseRtcpParameters = function (mediaSection) {
+ var rtcpParameters = {};
+
+ // Gets the first SSRC. Note that with RTX there might be multiple
+ // SSRCs.
+ var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:').map(function (line) {
+ return SDPUtils.parseSsrcMedia(line);
+ }).filter(function (obj) {
+ return obj.attribute === 'cname';
+ })[0];
+ if (remoteSsrc) {
+ rtcpParameters.cname = remoteSsrc.value;
+ rtcpParameters.ssrc = remoteSsrc.ssrc;
+ }
+
+ // Edge uses the compound attribute instead of reducedSize
+ // compound is !reducedSize
+ var rsize = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-rsize');
+ rtcpParameters.reducedSize = rsize.length > 0;
+ rtcpParameters.compound = rsize.length === 0;
+
+ // parses the rtcp-mux attrŅ–bute.
+ // Note that Edge does not support unmuxed RTCP.
+ var mux = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-mux');
+ rtcpParameters.mux = mux.length > 0;
+
+ return rtcpParameters;
+};
+
+SDPUtils.writeRtcpParameters = function (rtcpParameters) {
+ var sdp = '';
+ if (rtcpParameters.reducedSize) {
+ sdp += 'a=rtcp-rsize\r\n';
+ }
+ if (rtcpParameters.mux) {
+ sdp += 'a=rtcp-mux\r\n';
+ }
+ if (rtcpParameters.ssrc !== undefined && rtcpParameters.cname) {
+ sdp += 'a=ssrc:' + rtcpParameters.ssrc + ' cname:' + rtcpParameters.cname + '\r\n';
+ }
+ return sdp;
+};
+
+// parses either a=msid: or a=ssrc:... msid lines and returns
+// the id of the MediaStream and MediaStreamTrack.
+SDPUtils.parseMsid = function (mediaSection) {
+ var parts = void 0;
+ var spec = SDPUtils.matchPrefix(mediaSection, 'a=msid:');
+ if (spec.length === 1) {
+ parts = spec[0].substr(7).split(' ');
+ return { stream: parts[0], track: parts[1] };
+ }
+ var planB = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:').map(function (line) {
+ return SDPUtils.parseSsrcMedia(line);
+ }).filter(function (msidParts) {
+ return msidParts.attribute === 'msid';
+ });
+ if (planB.length > 0) {
+ parts = planB[0].value.split(' ');
+ return { stream: parts[0], track: parts[1] };
+ }
+};
+
+// SCTP
+// parses draft-ietf-mmusic-sctp-sdp-26 first and falls back
+// to draft-ietf-mmusic-sctp-sdp-05
+SDPUtils.parseSctpDescription = function (mediaSection) {
+ var mline = SDPUtils.parseMLine(mediaSection);
+ var maxSizeLine = SDPUtils.matchPrefix(mediaSection, 'a=max-message-size:');
+ var maxMessageSize = void 0;
+ if (maxSizeLine.length > 0) {
+ maxMessageSize = parseInt(maxSizeLine[0].substr(19), 10);
+ }
+ if (isNaN(maxMessageSize)) {
+ maxMessageSize = 65536;
+ }
+ var sctpPort = SDPUtils.matchPrefix(mediaSection, 'a=sctp-port:');
+ if (sctpPort.length > 0) {
+ return {
+ port: parseInt(sctpPort[0].substr(12), 10),
+ protocol: mline.fmt,
+ maxMessageSize: maxMessageSize
+ };
+ }
+ var sctpMapLines = SDPUtils.matchPrefix(mediaSection, 'a=sctpmap:');
+ if (sctpMapLines.length > 0) {
+ var parts = sctpMapLines[0].substr(10).split(' ');
+ return {
+ port: parseInt(parts[0], 10),
+ protocol: parts[1],
+ maxMessageSize: maxMessageSize
+ };
+ }
+};
+
+// SCTP
+// outputs the draft-ietf-mmusic-sctp-sdp-26 version that all browsers
+// support by now receiving in this format, unless we originally parsed
+// as the draft-ietf-mmusic-sctp-sdp-05 format (indicated by the m-line
+// protocol of DTLS/SCTP -- without UDP/ or TCP/)
+SDPUtils.writeSctpDescription = function (media, sctp) {
+ var output = [];
+ if (media.protocol !== 'DTLS/SCTP') {
+ output = ['m=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.protocol + '\r\n', 'c=IN IP4 0.0.0.0\r\n', 'a=sctp-port:' + sctp.port + '\r\n'];
+ } else {
+ output = ['m=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.port + '\r\n', 'c=IN IP4 0.0.0.0\r\n', 'a=sctpmap:' + sctp.port + ' ' + sctp.protocol + ' 65535\r\n'];
+ }
+ if (sctp.maxMessageSize !== undefined) {
+ output.push('a=max-message-size:' + sctp.maxMessageSize + '\r\n');
+ }
+ return output.join('');
+};
+
+// Generate a session ID for SDP.
+// https://tools.ietf.org/html/draft-ietf-rtcweb-jsep-20#section-5.2.1
+// recommends using a cryptographically random +ve 64-bit value
+// but right now this should be acceptable and within the right range
+SDPUtils.generateSessionId = function () {
+ return Math.random().toString().substr(2, 21);
+};
+
+// Write boiler plate for start of SDP
+// sessId argument is optional - if not supplied it will
+// be generated randomly
+// sessVersion is optional and defaults to 2
+// sessUser is optional and defaults to 'thisisadapterortc'
+SDPUtils.writeSessionBoilerplate = function (sessId, sessVer, sessUser) {
+ var sessionId = void 0;
+ var version = sessVer !== undefined ? sessVer : 2;
+ if (sessId) {
+ sessionId = sessId;
+ } else {
+ sessionId = SDPUtils.generateSessionId();
+ }
+ var user = sessUser || 'thisisadapterortc';
+ // FIXME: sess-id should be an NTP timestamp.
+ return 'v=0\r\n' + 'o=' + user + ' ' + sessionId + ' ' + version + ' IN IP4 127.0.0.1\r\n' + 's=-\r\n' + 't=0 0\r\n';
+};
+
+// Gets the direction from the mediaSection or the sessionpart.
+SDPUtils.getDirection = function (mediaSection, sessionpart) {
+ // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv.
+ var lines = SDPUtils.splitLines(mediaSection);
+ for (var i = 0; i < lines.length; i++) {
+ switch (lines[i]) {
+ case 'a=sendrecv':
+ case 'a=sendonly':
+ case 'a=recvonly':
+ case 'a=inactive':
+ return lines[i].substr(2);
+ default:
+ // FIXME: What should happen here?
+ }
+ }
+ if (sessionpart) {
+ return SDPUtils.getDirection(sessionpart);
+ }
+ return 'sendrecv';
+};
+
+SDPUtils.getKind = function (mediaSection) {
+ var lines = SDPUtils.splitLines(mediaSection);
+ var mline = lines[0].split(' ');
+ return mline[0].substr(2);
+};
+
+SDPUtils.isRejected = function (mediaSection) {
+ return mediaSection.split(' ', 2)[1] === '0';
+};
+
+SDPUtils.parseMLine = function (mediaSection) {
+ var lines = SDPUtils.splitLines(mediaSection);
+ var parts = lines[0].substr(2).split(' ');
+ return {
+ kind: parts[0],
+ port: parseInt(parts[1], 10),
+ protocol: parts[2],
+ fmt: parts.slice(3).join(' ')
+ };
+};
+
+SDPUtils.parseOLine = function (mediaSection) {
+ var line = SDPUtils.matchPrefix(mediaSection, 'o=')[0];
+ var parts = line.substr(2).split(' ');
+ return {
+ username: parts[0],
+ sessionId: parts[1],
+ sessionVersion: parseInt(parts[2], 10),
+ netType: parts[3],
+ addressType: parts[4],
+ address: parts[5]
+ };
+};
+
+// a very naive interpretation of a valid SDP.
+SDPUtils.isValidSDP = function (blob) {
+ if (typeof blob !== 'string' || blob.length === 0) {
+ return false;
+ }
+ var lines = SDPUtils.splitLines(blob);
+ for (var i = 0; i < lines.length; i++) {
+ if (lines[i].length < 2 || lines[i].charAt(1) !== '=') {
+ return false;
+ }
+ // TODO: check the modifier a bit more.
+ }
+ return true;
+};
+
+// Expose public methods.
+if ((typeof module === 'undefined' ? 'undefined' : _typeof(module)) === 'object') {
+ module.exports = SDPUtils;
+}
+},{}]},{},[1])(1)
+});
diff --git a/example/adapter-latest.js b/example/adapter-latest.js
new file mode 120000
index 0000000..b4cd07b
--- /dev/null
+++ b/example/adapter-latest.js
@@ -0,0 +1 @@
+adapter-8.0.0.js \ No newline at end of file
diff --git a/example/index.html b/example/index.html
new file mode 100644
index 0000000..2fcb129
--- /dev/null
+++ b/example/index.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <meta name="viewport" content="width=device-width, initial-scale=1">
+ <meta name="author" content="Chris Hiszpanski">
+ <script src="adapter-latest.js"></script>
+ <script src="index.js"></script>
+ <style>
+ body {
+ font-family: sans-serif;
+ text-align: center;
+ }
+ video {
+ background: black;
+ width: 80%;
+ }
+ </style>
+ <title>TinyRTC Demo</title>
+ </head>
+ <body>
+ <h1>TinyRTC Demo</h1>
+ <video autoplay controls muted playsinline id="remoteVideo"></video>
+ </body>
+</html>
diff --git a/example/index.js b/example/index.js
new file mode 100644
index 0000000..35fdbba
--- /dev/null
+++ b/example/index.js
@@ -0,0 +1,48 @@
+window.onload = function demo() {
+ // create peer connection
+ let pc = new RTCPeerConnection({
+ iceCandidatePoolSize: 4
+ });
+
+ // create websocket for signaling channel
+ let ws = new WebSocket('ws://localhost:8080');
+
+ // (callback) called upon discovery of new local ICE candidate
+ pc.onicecandidate = function(event) {
+ if (event.candidate) {
+ console.log("local candidate:\n%c%s", "color: green", event.candidate.candidate);
+ ws.send(JSON.stringify(event.candidate));
+ }
+ };
+
+ // (callback) called upon reception of new remote video track
+ pc.ontrack = function(event) {
+ document.getElementById("remoteVideo").srcObject = event.streams[0];
+ };
+
+ // receive remote answer or candidate
+ ws.onmessage = function(event) {
+ try {
+ let d = JSON.parse(event.data);
+ if ('candidate' in d) {
+ if (d.candidate) {
+ console.log("remote candidate:\n%c%s", "color: blue;", event.data);
+ }
+ } else if ('sdp' in d) {
+ console.log("remote answer:\n%c%s", "color: blue;", event.data);
+ }
+ } catch(e) {
+ console.log("remote error:\n%c%s", "color: red;", event.data);
+ }
+ };
+
+ // create offer and set to remote peer
+ ws.onopen = function(event) {
+ pc.createOffer({ offerToReceiveVideo: true }).then(function(offer) {
+ console.log("local offer:\n%c%s", "color: green;", offer.sdp);
+ pc.setLocalDescription(offer);
+ ws.send(JSON.stringify(offer));
+ });
+ };
+}
+
diff --git a/example/jsmn.h b/example/jsmn.h
new file mode 100644
index 0000000..8ac14c1
--- /dev/null
+++ b/example/jsmn.h
@@ -0,0 +1,471 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2010 Serge Zaitsev
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef JSMN_H
+#define JSMN_H
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef JSMN_STATIC
+#define JSMN_API static
+#else
+#define JSMN_API extern
+#endif
+
+/**
+ * JSON type identifier. Basic types are:
+ * o Object
+ * o Array
+ * o String
+ * o Other primitive: number, boolean (true/false) or null
+ */
+typedef enum {
+ JSMN_UNDEFINED = 0,
+ JSMN_OBJECT = 1 << 0,
+ JSMN_ARRAY = 1 << 1,
+ JSMN_STRING = 1 << 2,
+ JSMN_PRIMITIVE = 1 << 3
+} jsmntype_t;
+
+enum jsmnerr {
+ /* Not enough tokens were provided */
+ JSMN_ERROR_NOMEM = -1,
+ /* Invalid character inside JSON string */
+ JSMN_ERROR_INVAL = -2,
+ /* The string is not a full JSON packet, more bytes expected */
+ JSMN_ERROR_PART = -3
+};
+
+/**
+ * JSON token description.
+ * type type (object, array, string etc.)
+ * start start position in JSON data string
+ * end end position in JSON data string
+ */
+typedef struct jsmntok {
+ jsmntype_t type;
+ int start;
+ int end;
+ int size;
+#ifdef JSMN_PARENT_LINKS
+ int parent;
+#endif
+} jsmntok_t;
+
+/**
+ * JSON parser. Contains an array of token blocks available. Also stores
+ * the string being parsed now and current position in that string.
+ */
+typedef struct jsmn_parser {
+ unsigned int pos; /* offset in the JSON string */
+ unsigned int toknext; /* next token to allocate */
+ int toksuper; /* superior token node, e.g. parent object or array */
+} jsmn_parser;
+
+/**
+ * Create JSON parser over an array of tokens
+ */
+JSMN_API void jsmn_init(jsmn_parser *parser);
+
+/**
+ * Run JSON parser. It parses a JSON data string into and array of tokens, each
+ * describing
+ * a single JSON object.
+ */
+JSMN_API int jsmn_parse(jsmn_parser *parser, const char *js, const size_t len,
+ jsmntok_t *tokens, const unsigned int num_tokens);
+
+#ifndef JSMN_HEADER
+/**
+ * Allocates a fresh unused token from the token pool.
+ */
+static jsmntok_t *jsmn_alloc_token(jsmn_parser *parser, jsmntok_t *tokens,
+ const size_t num_tokens) {
+ jsmntok_t *tok;
+ if (parser->toknext >= num_tokens) {
+ return NULL;
+ }
+ tok = &tokens[parser->toknext++];
+ tok->start = tok->end = -1;
+ tok->size = 0;
+#ifdef JSMN_PARENT_LINKS
+ tok->parent = -1;
+#endif
+ return tok;
+}
+
+/**
+ * Fills token type and boundaries.
+ */
+static void jsmn_fill_token(jsmntok_t *token, const jsmntype_t type,
+ const int start, const int end) {
+ token->type = type;
+ token->start = start;
+ token->end = end;
+ token->size = 0;
+}
+
+/**
+ * Fills next available token with JSON primitive.
+ */
+static int jsmn_parse_primitive(jsmn_parser *parser, const char *js,
+ const size_t len, jsmntok_t *tokens,
+ const size_t num_tokens) {
+ jsmntok_t *token;
+ int start;
+
+ start = parser->pos;
+
+ for (; parser->pos < len && js[parser->pos] != '\0'; parser->pos++) {
+ switch (js[parser->pos]) {
+#ifndef JSMN_STRICT
+ /* In strict mode primitive must be followed by "," or "}" or "]" */
+ case ':':
+#endif
+ case '\t':
+ case '\r':
+ case '\n':
+ case ' ':
+ case ',':
+ case ']':
+ case '}':
+ goto found;
+ default:
+ /* to quiet a warning from gcc*/
+ break;
+ }
+ if (js[parser->pos] < 32 || js[parser->pos] >= 127) {
+ parser->pos = start;
+ return JSMN_ERROR_INVAL;
+ }
+ }
+#ifdef JSMN_STRICT
+ /* In strict mode primitive must be followed by a comma/object/array */
+ parser->pos = start;
+ return JSMN_ERROR_PART;
+#endif
+
+found:
+ if (tokens == NULL) {
+ parser->pos--;
+ return 0;
+ }
+ token = jsmn_alloc_token(parser, tokens, num_tokens);
+ if (token == NULL) {
+ parser->pos = start;
+ return JSMN_ERROR_NOMEM;
+ }
+ jsmn_fill_token(token, JSMN_PRIMITIVE, start, parser->pos);
+#ifdef JSMN_PARENT_LINKS
+ token->parent = parser->toksuper;
+#endif
+ parser->pos--;
+ return 0;
+}
+
+/**
+ * Fills next token with JSON string.
+ */
+static int jsmn_parse_string(jsmn_parser *parser, const char *js,
+ const size_t len, jsmntok_t *tokens,
+ const size_t num_tokens) {
+ jsmntok_t *token;
+
+ int start = parser->pos;
+
+ /* Skip starting quote */
+ parser->pos++;
+
+ for (; parser->pos < len && js[parser->pos] != '\0'; parser->pos++) {
+ char c = js[parser->pos];
+
+ /* Quote: end of string */
+ if (c == '\"') {
+ if (tokens == NULL) {
+ return 0;
+ }
+ token = jsmn_alloc_token(parser, tokens, num_tokens);
+ if (token == NULL) {
+ parser->pos = start;
+ return JSMN_ERROR_NOMEM;
+ }
+ jsmn_fill_token(token, JSMN_STRING, start + 1, parser->pos);
+#ifdef JSMN_PARENT_LINKS
+ token->parent = parser->toksuper;
+#endif
+ return 0;
+ }
+
+ /* Backslash: Quoted symbol expected */
+ if (c == '\\' && parser->pos + 1 < len) {
+ int i;
+ parser->pos++;
+ switch (js[parser->pos]) {
+ /* Allowed escaped symbols */
+ case '\"':
+ case '/':
+ case '\\':
+ case 'b':
+ case 'f':
+ case 'r':
+ case 'n':
+ case 't':
+ break;
+ /* Allows escaped symbol \uXXXX */
+ case 'u':
+ parser->pos++;
+ for (i = 0; i < 4 && parser->pos < len && js[parser->pos] != '\0';
+ i++) {
+ /* If it isn't a hex character we have an error */
+ if (!((js[parser->pos] >= 48 && js[parser->pos] <= 57) || /* 0-9 */
+ (js[parser->pos] >= 65 && js[parser->pos] <= 70) || /* A-F */
+ (js[parser->pos] >= 97 && js[parser->pos] <= 102))) { /* a-f */
+ parser->pos = start;
+ return JSMN_ERROR_INVAL;
+ }
+ parser->pos++;
+ }
+ parser->pos--;
+ break;
+ /* Unexpected symbol */
+ default:
+ parser->pos = start;
+ return JSMN_ERROR_INVAL;
+ }
+ }
+ }
+ parser->pos = start;
+ return JSMN_ERROR_PART;
+}
+
+/**
+ * Parse JSON string and fill tokens.
+ */
+JSMN_API int jsmn_parse(jsmn_parser *parser, const char *js, const size_t len,
+ jsmntok_t *tokens, const unsigned int num_tokens) {
+ int r;
+ int i;
+ jsmntok_t *token;
+ int count = parser->toknext;
+
+ for (; parser->pos < len && js[parser->pos] != '\0'; parser->pos++) {
+ char c;
+ jsmntype_t type;
+
+ c = js[parser->pos];
+ switch (c) {
+ case '{':
+ case '[':
+ count++;
+ if (tokens == NULL) {
+ break;
+ }
+ token = jsmn_alloc_token(parser, tokens, num_tokens);
+ if (token == NULL) {
+ return JSMN_ERROR_NOMEM;
+ }
+ if (parser->toksuper != -1) {
+ jsmntok_t *t = &tokens[parser->toksuper];
+#ifdef JSMN_STRICT
+ /* In strict mode an object or array can't become a key */
+ if (t->type == JSMN_OBJECT) {
+ return JSMN_ERROR_INVAL;
+ }
+#endif
+ t->size++;
+#ifdef JSMN_PARENT_LINKS
+ token->parent = parser->toksuper;
+#endif
+ }
+ token->type = (c == '{' ? JSMN_OBJECT : JSMN_ARRAY);
+ token->start = parser->pos;
+ parser->toksuper = parser->toknext - 1;
+ break;
+ case '}':
+ case ']':
+ if (tokens == NULL) {
+ break;
+ }
+ type = (c == '}' ? JSMN_OBJECT : JSMN_ARRAY);
+#ifdef JSMN_PARENT_LINKS
+ if (parser->toknext < 1) {
+ return JSMN_ERROR_INVAL;
+ }
+ token = &tokens[parser->toknext - 1];
+ for (;;) {
+ if (token->start != -1 && token->end == -1) {
+ if (token->type != type) {
+ return JSMN_ERROR_INVAL;
+ }
+ token->end = parser->pos + 1;
+ parser->toksuper = token->parent;
+ break;
+ }
+ if (token->parent == -1) {
+ if (token->type != type || parser->toksuper == -1) {
+ return JSMN_ERROR_INVAL;
+ }
+ break;
+ }
+ token = &tokens[token->parent];
+ }
+#else
+ for (i = parser->toknext - 1; i >= 0; i--) {
+ token = &tokens[i];
+ if (token->start != -1 && token->end == -1) {
+ if (token->type != type) {
+ return JSMN_ERROR_INVAL;
+ }
+ parser->toksuper = -1;
+ token->end = parser->pos + 1;
+ break;
+ }
+ }
+ /* Error if unmatched closing bracket */
+ if (i == -1) {
+ return JSMN_ERROR_INVAL;
+ }
+ for (; i >= 0; i--) {
+ token = &tokens[i];
+ if (token->start != -1 && token->end == -1) {
+ parser->toksuper = i;
+ break;
+ }
+ }
+#endif
+ break;
+ case '\"':
+ r = jsmn_parse_string(parser, js, len, tokens, num_tokens);
+ if (r < 0) {
+ return r;
+ }
+ count++;
+ if (parser->toksuper != -1 && tokens != NULL) {
+ tokens[parser->toksuper].size++;
+ }
+ break;
+ case '\t':
+ case '\r':
+ case '\n':
+ case ' ':
+ break;
+ case ':':
+ parser->toksuper = parser->toknext - 1;
+ break;
+ case ',':
+ if (tokens != NULL && parser->toksuper != -1 &&
+ tokens[parser->toksuper].type != JSMN_ARRAY &&
+ tokens[parser->toksuper].type != JSMN_OBJECT) {
+#ifdef JSMN_PARENT_LINKS
+ parser->toksuper = tokens[parser->toksuper].parent;
+#else
+ for (i = parser->toknext - 1; i >= 0; i--) {
+ if (tokens[i].type == JSMN_ARRAY || tokens[i].type == JSMN_OBJECT) {
+ if (tokens[i].start != -1 && tokens[i].end == -1) {
+ parser->toksuper = i;
+ break;
+ }
+ }
+ }
+#endif
+ }
+ break;
+#ifdef JSMN_STRICT
+ /* In strict mode primitives are: numbers and booleans */
+ case '-':
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ case 't':
+ case 'f':
+ case 'n':
+ /* And they must not be keys of the object */
+ if (tokens != NULL && parser->toksuper != -1) {
+ const jsmntok_t *t = &tokens[parser->toksuper];
+ if (t->type == JSMN_OBJECT ||
+ (t->type == JSMN_STRING && t->size != 0)) {
+ return JSMN_ERROR_INVAL;
+ }
+ }
+#else
+ /* In non-strict mode every unquoted value is a primitive */
+ default:
+#endif
+ r = jsmn_parse_primitive(parser, js, len, tokens, num_tokens);
+ if (r < 0) {
+ return r;
+ }
+ count++;
+ if (parser->toksuper != -1 && tokens != NULL) {
+ tokens[parser->toksuper].size++;
+ }
+ break;
+
+#ifdef JSMN_STRICT
+ /* Unexpected char in strict mode */
+ default:
+ return JSMN_ERROR_INVAL;
+#endif
+ }
+ }
+
+ if (tokens != NULL) {
+ for (i = parser->toknext - 1; i >= 0; i--) {
+ /* Unmatched opened object or array */
+ if (tokens[i].start != -1 && tokens[i].end == -1) {
+ return JSMN_ERROR_PART;
+ }
+ }
+ }
+
+ return count;
+}
+
+/**
+ * Creates a new parser based over a given buffer with an array of tokens
+ * available.
+ */
+JSMN_API void jsmn_init(jsmn_parser *parser) {
+ parser->pos = 0;
+ parser->toknext = 0;
+ parser->toksuper = -1;
+}
+
+#endif /* JSMN_HEADER */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* JSMN_H */
diff --git a/example/main.c b/example/main.c
new file mode 100644
index 0000000..6223898
--- /dev/null
+++ b/example/main.c
@@ -0,0 +1,112 @@
+// Simple example of a mock IP camera. Answers WebRTC offer and streams H.264.
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "jsmn.h"
+#include "tinyrtc.h"
+
+// Helper function for parsing JSON
+static bool matches(const char *json, jsmntok_t *tok, const char *s) {
+ if (JSMN_STRING != tok->type) return false;
+ if (strlen(s) != tok->end - tok->start) return false;
+ return 0 == strncmp(json + tok->start, s, tok->end - tok->start);
+}
+
+// Parses ICE candidate from stringified JSON
+struct ice_candidate_t parse_ice_candidate(const char *s)
+{
+ struct ice_candidate_t c = { 0 };
+
+ int i, r;
+ jsmn_parser p;
+ jsmntok_t t[16];
+ jsmn_init(&p);
+
+ r = jsmn_parse(&p, s, strlen(s), t, sizeof(t) / sizeof(t[0]));
+ if (r < 0) {
+ printf("%s:%d: failed to parse json", __func__, __LINE__);
+ return c;
+ }
+
+ if (r < 1 || t[0].type != JSMN_OBJECT) {
+ printf("%s:%d: object expected", __func__, __LINE__);
+ return c;
+ }
+
+ for (i = 1; i < r; i++) {
+ if (matches(s, &t[i], "candidate")) {
+ strncpy(c.candidate, s + t[i + 1].start,
+ t[i + 1].end - t[i + 1].start);
+ i++;
+ } else if (matches(s, &t[i], "sdpMid")) {
+ strncpy(c.sdp_mid, s + t[i + 1].start,
+ t[i + 1].end - t[i + 1].start);
+ i++;
+ } else if (matches(s, &t[i], "sdpMLineIndex")) {
+ c.sdp_mline_index = atoi(s + t[i + 1].start);
+ i++;
+ } else if (matches(s, &t[i], "usernameFragment")) {
+ strncpy(c.username_fragment, s + t[i + 1].start,
+ t[i + 1].end - t[i + 1].start);
+ i++;
+ }
+ }
+
+ return c;
+}
+
+// (callback) Called for each discovered local ICE candidate
+int on_ice_candidate(const struct ice_candidate_t c, void *arg) {
+ // send ice candidate over signaling channel
+ printf("{"
+ "\"candidate\":\"%s\","
+ "\"sdpMLineIndex\":%d,"
+ "\"sdpMid\":\"%s\","
+ "\"usernameFragment\":null"
+ "}\n", c.candidate, c.sdp_mline_index, c.sdp_mid);
+
+ return 0;
+}
+
+int main(int argc, char **argv)
+{
+ // disable stdout buffering to ensure signaling messages send immediately
+ setvbuf(stdout, NULL, _IONBF, 0);
+
+ // create peer connection
+ struct configuration_t cfg = {
+ .ice_servers = {
+ {
+ .urls = {
+ "stun:stun.liburtc.org",
+ },
+ }
+ }
+ };
+ struct peerconn_t* pc = rtc_peer_connection(cfg);
+
+ printf("alert! starting\n");
+
+ while (true) {
+ int n;
+ char *m = NULL;
+ size_t len = 0;
+
+
+ if (n = getline(&m, &len, stdin), -1 == n) {
+ return -1;
+ }
+
+ struct ice_candidate_t c = parse_ice_candidate(m);
+
+ on_ice_candidate(c, NULL);
+
+ add_ice_candidate(pc, c);
+ }
+
+ return 0;
+}
diff --git a/example/video.264 b/example/video.264
new file mode 100644
index 0000000..eb8cc08
--- /dev/null
+++ b/example/video.264
Binary files differ
diff --git a/tinyrtc.h b/tinyrtc.h
new file mode 100644
index 0000000..1d66b78
--- /dev/null
+++ b/tinyrtc.h
@@ -0,0 +1,74 @@
+/**
+ * WebRTC implementation for tiny devices
+ *
+ * Copyright (c) 2022 Chris Hiszpanski. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ */
+
+#ifndef TINYRTC_H
+#define TINYRTC_H
+
+struct peerconn_t {
+};
+
+struct rtc_ice_server_t {
+ char credential[128]; // XXX only password type supported
+ char urls[3][128];
+ char username[128];
+};
+
+struct configuration_t {
+ struct rtc_ice_server_t ice_servers[3];
+};
+
+struct ice_candidate_t {
+ char candidate[256];
+ int sdp_mline_index;
+ char sdp_mid[32];
+ char username_fragment[8];
+};
+
+typedef int (on_ice_candidate_t)(const struct ice_candidate_t c, void *arg);
+
+struct peerconn_t* rtc_peer_connection(struct configuration_t cfg) {
+ return 0;
+}
+
+int add_ice_candidate(struct peerconn_t *pc, const struct ice_candidate_t c) {
+ return -1;
+};
+
+int create_answer(struct peerconn_t *pc) {
+ return -1;
+};
+
+int set_local_description(struct peerconn_t *pc, const char *sdp) {
+ return -1;
+};
+
+int set_remote_description(struct peerconn_t *pc, const char *sdp) {
+ return -1;
+};
+
+#endif