Creates simulcast module
This commit is contained in:
hristoterezov
parent
fcf785f32c
commit
faaf24d3c4
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@ -11,7 +11,6 @@
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<meta itemprop="image" content="/images/jitsilogo.png"/>
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<script src="libs/jquery-2.1.1.min.js"></script>
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<script src="config.js?v=5"></script><!-- adapt to your needs, i.e. set hosts and bosh path -->
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<script src="simulcast.js?v=8"></script><!-- simulcast handling -->
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<script src="libs/strophe/strophe.jingle.adapter.js?v=4"></script><!-- strophe.jingle bundles -->
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<script src="libs/strophe/strophe.min.js?v=1"></script>
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<script src="libs/strophe/strophe.disco.min.js?v=1"></script>
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@ -30,6 +29,7 @@
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<script src="service/RTC/RTCBrowserType.js?v=1"></script>
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<script src="service/RTC/StreamEventTypes.js?v=1"></script>
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<script src="service/RTC/MediaStreamTypes.js?v=1"></script>
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<script src="libs/modules/simulcast.bundle.js?v=1"></script>
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<script src="libs/modules/connectionquality.bundle.js?v=1"></script>
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<script src="libs/modules/UI.bundle.js?v=2"></script>
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<script src="libs/modules/statistics.bundle.js?v=1"></script>
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@ -1,236 +1,40 @@
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/*jslint plusplus: true */
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/*jslint nomen: true*/
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!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var f;"undefined"!=typeof window?f=window:"undefined"!=typeof global?f=global:"undefined"!=typeof self&&(f=self),f.simulcast=e()}}(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
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/**
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*
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* @constructor
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*/
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function SimulcastUtils() {
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this.logger = new SimulcastLogger("SimulcastUtils", 1);
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function SimulcastLogger(name, lvl) {
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this.name = name;
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this.lvl = lvl;
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}
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/**
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*
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* @type {{}}
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* @private
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*/
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SimulcastUtils.prototype._emptyCompoundIndex = {};
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/**
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*
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* @param lines
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* @param videoSources
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* @private
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*/
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SimulcastUtils.prototype._replaceVideoSources = function (lines, videoSources) {
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var i, inVideo = false, index = -1, howMany = 0;
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this.logger.info('Replacing video sources...');
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for (i = 0; i < lines.length; i++) {
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if (inVideo && lines[i].substring(0, 'm='.length) === 'm=') {
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// Out of video.
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break;
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}
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if (!inVideo && lines[i].substring(0, 'm=video '.length) === 'm=video ') {
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// In video.
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inVideo = true;
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}
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if (inVideo && (lines[i].substring(0, 'a=ssrc:'.length) === 'a=ssrc:'
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|| lines[i].substring(0, 'a=ssrc-group:'.length) === 'a=ssrc-group:')) {
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if (index === -1) {
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index = i;
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}
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howMany++;
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}
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}
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// efficiency baby ;)
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lines.splice.apply(lines,
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[index, howMany].concat(videoSources));
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};
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SimulcastUtils.prototype.isValidDescription = function (desc)
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{
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return desc && desc != null
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&& desc.type && desc.type != ''
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&& desc.sdp && desc.sdp != '';
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};
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SimulcastUtils.prototype._getVideoSources = function (lines) {
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var i, inVideo = false, sb = [];
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this.logger.info('Getting video sources...');
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for (i = 0; i < lines.length; i++) {
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if (inVideo && lines[i].substring(0, 'm='.length) === 'm=') {
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// Out of video.
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break;
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}
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if (!inVideo && lines[i].substring(0, 'm=video '.length) === 'm=video ') {
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// In video.
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inVideo = true;
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}
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if (inVideo && lines[i].substring(0, 'a=ssrc:'.length) === 'a=ssrc:') {
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// In SSRC.
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sb.push(lines[i]);
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}
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if (inVideo && lines[i].substring(0, 'a=ssrc-group:'.length) === 'a=ssrc-group:') {
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sb.push(lines[i]);
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}
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}
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return sb;
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};
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SimulcastUtils.prototype.parseMedia = function (lines, mediatypes) {
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var i, res = [], type, cur_media, idx, ssrcs, cur_ssrc, ssrc,
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ssrc_attribute, group, semantics, skip = true;
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this.logger.info('Parsing media sources...');
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for (i = 0; i < lines.length; i++) {
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if (lines[i].substring(0, 'm='.length) === 'm=') {
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type = lines[i]
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.substr('m='.length, lines[i].indexOf(' ') - 'm='.length);
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skip = mediatypes !== undefined && mediatypes.indexOf(type) === -1;
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if (!skip) {
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cur_media = {
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'type': type,
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'sources': {},
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'groups': []
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};
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res.push(cur_media);
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}
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} else if (!skip && lines[i].substring(0, 'a=ssrc:'.length) === 'a=ssrc:') {
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idx = lines[i].indexOf(' ');
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ssrc = lines[i].substring('a=ssrc:'.length, idx);
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if (cur_media.sources[ssrc] === undefined) {
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cur_ssrc = {'ssrc': ssrc};
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cur_media.sources[ssrc] = cur_ssrc;
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}
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ssrc_attribute = lines[i].substr(idx + 1).split(':', 2)[0];
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cur_ssrc[ssrc_attribute] = lines[i].substr(idx + 1).split(':', 2)[1];
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if (cur_media.base === undefined) {
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cur_media.base = cur_ssrc;
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}
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} else if (!skip && lines[i].substring(0, 'a=ssrc-group:'.length) === 'a=ssrc-group:') {
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idx = lines[i].indexOf(' ');
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semantics = lines[i].substr(0, idx).substr('a=ssrc-group:'.length);
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ssrcs = lines[i].substr(idx).trim().split(' ');
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group = {
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'semantics': semantics,
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'ssrcs': ssrcs
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};
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cur_media.groups.push(group);
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} else if (!skip && (lines[i].substring(0, 'a=sendrecv'.length) === 'a=sendrecv' ||
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lines[i].substring(0, 'a=recvonly'.length) === 'a=recvonly' ||
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lines[i].substring(0, 'a=sendonly'.length) === 'a=sendonly' ||
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lines[i].substring(0, 'a=inactive'.length) === 'a=inactive')) {
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cur_media.direction = lines[i].substring('a='.length);
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}
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}
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return res;
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};
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/**
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* The _indexOfArray() method returns the first a CompoundIndex at which a
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* given element can be found in the array, or _emptyCompoundIndex if it is
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* not present.
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*
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* Example:
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*
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* _indexOfArray('3', [ 'this is line 1', 'this is line 2', 'this is line 3' ])
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*
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* returns {row: 2, column: 14}
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*
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* @param needle
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* @param haystack
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* @param start
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* @returns {}
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* @private
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*/
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SimulcastUtils.prototype._indexOfArray = function (needle, haystack, start) {
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var length = haystack.length, idx, i;
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if (!start) {
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start = 0;
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}
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for (i = start; i < length; i++) {
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idx = haystack[i].indexOf(needle);
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if (idx !== -1) {
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return {row: i, column: idx};
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}
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}
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return this._emptyCompoundIndex;
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};
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SimulcastUtils.prototype._removeSimulcastGroup = function (lines) {
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var i;
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for (i = lines.length - 1; i >= 0; i--) {
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if (lines[i].indexOf('a=ssrc-group:SIM') !== -1) {
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lines.splice(i, 1);
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}
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SimulcastLogger.prototype.log = function (text) {
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if (this.lvl) {
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console.log(text);
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}
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};
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SimulcastUtils.prototype._compileVideoSources = function (videoSources) {
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var sb = [], ssrc, addedSSRCs = [];
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this.logger.info('Compiling video sources...');
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// Add the groups
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if (videoSources.groups && videoSources.groups.length !== 0) {
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videoSources.groups.forEach(function (group) {
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if (group.ssrcs && group.ssrcs.length !== 0) {
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sb.push([['a=ssrc-group:', group.semantics].join(''), group.ssrcs.join(' ')].join(' '));
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// if (group.semantics !== 'SIM') {
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group.ssrcs.forEach(function (ssrc) {
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addedSSRCs.push(ssrc);
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sb.splice.apply(sb, [sb.length, 0].concat([
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["a=ssrc:", ssrc, " cname:", videoSources.sources[ssrc].cname].join(''),
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["a=ssrc:", ssrc, " msid:", videoSources.sources[ssrc].msid].join('')]));
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});
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//}
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SimulcastLogger.prototype.info = function (text) {
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if (this.lvl > 1) {
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console.info(text);
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}
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});
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}
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// Then add any free sources.
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if (videoSources.sources) {
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for (ssrc in videoSources.sources) {
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if (addedSSRCs.indexOf(ssrc) === -1) {
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sb.splice.apply(sb, [sb.length, 0].concat([
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["a=ssrc:", ssrc, " cname:", videoSources.sources[ssrc].cname].join(''),
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["a=ssrc:", ssrc, " msid:", videoSources.sources[ssrc].msid].join('')]));
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}
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}
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}
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return sb;
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};
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SimulcastLogger.prototype.fine = function (text) {
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if (this.lvl > 2) {
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console.log(text);
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}
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};
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SimulcastLogger.prototype.error = function (text) {
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console.error(text);
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};
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module.exports = SimulcastLogger;
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},{}],2:[function(require,module,exports){
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var SimulcastLogger = require("./SimulcastLogger");
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var SimulcastUtils = require("./SimulcastUtils");
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function SimulcastReceiver() {
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this.simulcastUtils = new SimulcastUtils();
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this.logger = new SimulcastLogger('SimulcastReceiver', 1);
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@ -492,6 +296,48 @@ SimulcastReceiver.prototype.getRemoteVideoStreamIdBySSRC = function (ssrc) {
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return this._remoteMaps.ssrc2Msid[ssrc];
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};
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/**
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* Removes the ssrc-group:SIM from the remote description bacause Chrome
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* either gets confused and thinks this is an FID group or, if an FID group
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* is already present, it fails to set the remote description.
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*
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* @param desc
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* @returns {*}
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*/
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SimulcastReceiver.prototype.transformRemoteDescription = function (desc) {
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if (desc && desc.sdp) {
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var sb = desc.sdp.split('\r\n');
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this._updateRemoteMaps(sb);
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this._cacheRemoteVideoSources(sb);
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// NOTE(gp) this needs to be called after updateRemoteMaps because we
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// need the simulcast group in the _updateRemoteMaps() method.
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this.simulcastUtils._removeSimulcastGroup(sb);
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if (desc.sdp.indexOf('a=ssrc-group:SIM') !== -1) {
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// We don't need the goog conference flag if we're not doing
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// simulcast.
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this._ensureGoogConference(sb);
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}
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desc = new RTCSessionDescription({
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type: desc.type,
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sdp: sb.join('\r\n')
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});
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this.logger.fine(['Transformed remote description', desc.sdp].join(' '));
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}
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return desc;
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};
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module.exports = SimulcastReceiver;
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},{"./SimulcastLogger":1,"./SimulcastUtils":4}],3:[function(require,module,exports){
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var SimulcastLogger = require("./SimulcastLogger");
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var SimulcastUtils = require("./SimulcastUtils");
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function SimulcastSender() {
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this.simulcastUtils = new SimulcastUtils();
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this.logger = new SimulcastLogger('SimulcastSender', 1);
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@ -735,43 +581,6 @@ NativeSimulcastSender.prototype.transformLocalDescription = function (desc) {
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return desc;
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};
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/**
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* Removes the ssrc-group:SIM from the remote description bacause Chrome
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* either gets confused and thinks this is an FID group or, if an FID group
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* is already present, it fails to set the remote description.
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*
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* @param desc
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* @returns {*}
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*/
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SimulcastReceiver.prototype.transformRemoteDescription = function (desc) {
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if (desc && desc.sdp) {
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var sb = desc.sdp.split('\r\n');
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this._updateRemoteMaps(sb);
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this._cacheRemoteVideoSources(sb);
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// NOTE(gp) this needs to be called after updateRemoteMaps because we
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// need the simulcast group in the _updateRemoteMaps() method.
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this.simulcastUtils._removeSimulcastGroup(sb);
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if (desc.sdp.indexOf('a=ssrc-group:SIM') !== -1) {
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// We don't need the goog conference flag if we're not doing
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// simulcast.
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this._ensureGoogConference(sb);
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}
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desc = new RTCSessionDescription({
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type: desc.type,
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sdp: sb.join('\r\n')
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});
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this.logger.fine(['Transformed remote description', desc.sdp].join(' '));
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}
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return desc;
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};
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NativeSimulcastSender.prototype._setLocalVideoStreamEnabled = function (ssrc, enabled) {
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// Nothing to do here, native simulcast does that auto-magically.
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};
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@ -1041,6 +850,256 @@ NoSimulcastSender.prototype._setLocalVideoStreamEnabled = function (ssrc, enable
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NoSimulcastSender.prototype.constructor = NoSimulcastSender;
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module.exports = {
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"native": NativeSimulcastSender,
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"no": NoSimulcastSender
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}
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},{"./SimulcastLogger":1,"./SimulcastUtils":4}],4:[function(require,module,exports){
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var SimulcastLogger = require("./SimulcastLogger");
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/**
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*
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* @constructor
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*/
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function SimulcastUtils() {
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this.logger = new SimulcastLogger("SimulcastUtils", 1);
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}
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/**
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*
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* @type {{}}
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* @private
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*/
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SimulcastUtils.prototype._emptyCompoundIndex = {};
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/**
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*
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* @param lines
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* @param videoSources
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* @private
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*/
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SimulcastUtils.prototype._replaceVideoSources = function (lines, videoSources) {
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var i, inVideo = false, index = -1, howMany = 0;
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this.logger.info('Replacing video sources...');
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for (i = 0; i < lines.length; i++) {
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if (inVideo && lines[i].substring(0, 'm='.length) === 'm=') {
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// Out of video.
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break;
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}
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if (!inVideo && lines[i].substring(0, 'm=video '.length) === 'm=video ') {
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// In video.
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inVideo = true;
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}
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if (inVideo && (lines[i].substring(0, 'a=ssrc:'.length) === 'a=ssrc:'
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|| lines[i].substring(0, 'a=ssrc-group:'.length) === 'a=ssrc-group:')) {
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if (index === -1) {
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index = i;
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}
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howMany++;
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}
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}
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// efficiency baby ;)
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lines.splice.apply(lines,
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[index, howMany].concat(videoSources));
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};
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SimulcastUtils.prototype.isValidDescription = function (desc)
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{
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return desc && desc != null
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&& desc.type && desc.type != ''
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&& desc.sdp && desc.sdp != '';
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};
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SimulcastUtils.prototype._getVideoSources = function (lines) {
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var i, inVideo = false, sb = [];
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this.logger.info('Getting video sources...');
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for (i = 0; i < lines.length; i++) {
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if (inVideo && lines[i].substring(0, 'm='.length) === 'm=') {
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// Out of video.
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break;
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}
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if (!inVideo && lines[i].substring(0, 'm=video '.length) === 'm=video ') {
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// In video.
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inVideo = true;
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}
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if (inVideo && lines[i].substring(0, 'a=ssrc:'.length) === 'a=ssrc:') {
|
||||
// In SSRC.
|
||||
sb.push(lines[i]);
|
||||
}
|
||||
|
||||
if (inVideo && lines[i].substring(0, 'a=ssrc-group:'.length) === 'a=ssrc-group:') {
|
||||
sb.push(lines[i]);
|
||||
}
|
||||
}
|
||||
|
||||
return sb;
|
||||
};
|
||||
|
||||
SimulcastUtils.prototype.parseMedia = function (lines, mediatypes) {
|
||||
var i, res = [], type, cur_media, idx, ssrcs, cur_ssrc, ssrc,
|
||||
ssrc_attribute, group, semantics, skip = true;
|
||||
|
||||
this.logger.info('Parsing media sources...');
|
||||
|
||||
for (i = 0; i < lines.length; i++) {
|
||||
if (lines[i].substring(0, 'm='.length) === 'm=') {
|
||||
|
||||
type = lines[i]
|
||||
.substr('m='.length, lines[i].indexOf(' ') - 'm='.length);
|
||||
skip = mediatypes !== undefined && mediatypes.indexOf(type) === -1;
|
||||
|
||||
if (!skip) {
|
||||
cur_media = {
|
||||
'type': type,
|
||||
'sources': {},
|
||||
'groups': []
|
||||
};
|
||||
|
||||
res.push(cur_media);
|
||||
}
|
||||
|
||||
} else if (!skip && lines[i].substring(0, 'a=ssrc:'.length) === 'a=ssrc:') {
|
||||
|
||||
idx = lines[i].indexOf(' ');
|
||||
ssrc = lines[i].substring('a=ssrc:'.length, idx);
|
||||
if (cur_media.sources[ssrc] === undefined) {
|
||||
cur_ssrc = {'ssrc': ssrc};
|
||||
cur_media.sources[ssrc] = cur_ssrc;
|
||||
}
|
||||
|
||||
ssrc_attribute = lines[i].substr(idx + 1).split(':', 2)[0];
|
||||
cur_ssrc[ssrc_attribute] = lines[i].substr(idx + 1).split(':', 2)[1];
|
||||
|
||||
if (cur_media.base === undefined) {
|
||||
cur_media.base = cur_ssrc;
|
||||
}
|
||||
|
||||
} else if (!skip && lines[i].substring(0, 'a=ssrc-group:'.length) === 'a=ssrc-group:') {
|
||||
idx = lines[i].indexOf(' ');
|
||||
semantics = lines[i].substr(0, idx).substr('a=ssrc-group:'.length);
|
||||
ssrcs = lines[i].substr(idx).trim().split(' ');
|
||||
group = {
|
||||
'semantics': semantics,
|
||||
'ssrcs': ssrcs
|
||||
};
|
||||
cur_media.groups.push(group);
|
||||
} else if (!skip && (lines[i].substring(0, 'a=sendrecv'.length) === 'a=sendrecv' ||
|
||||
lines[i].substring(0, 'a=recvonly'.length) === 'a=recvonly' ||
|
||||
lines[i].substring(0, 'a=sendonly'.length) === 'a=sendonly' ||
|
||||
lines[i].substring(0, 'a=inactive'.length) === 'a=inactive')) {
|
||||
|
||||
cur_media.direction = lines[i].substring('a='.length);
|
||||
}
|
||||
}
|
||||
|
||||
return res;
|
||||
};
|
||||
|
||||
/**
|
||||
* The _indexOfArray() method returns the first a CompoundIndex at which a
|
||||
* given element can be found in the array, or _emptyCompoundIndex if it is
|
||||
* not present.
|
||||
*
|
||||
* Example:
|
||||
*
|
||||
* _indexOfArray('3', [ 'this is line 1', 'this is line 2', 'this is line 3' ])
|
||||
*
|
||||
* returns {row: 2, column: 14}
|
||||
*
|
||||
* @param needle
|
||||
* @param haystack
|
||||
* @param start
|
||||
* @returns {}
|
||||
* @private
|
||||
*/
|
||||
SimulcastUtils.prototype._indexOfArray = function (needle, haystack, start) {
|
||||
var length = haystack.length, idx, i;
|
||||
|
||||
if (!start) {
|
||||
start = 0;
|
||||
}
|
||||
|
||||
for (i = start; i < length; i++) {
|
||||
idx = haystack[i].indexOf(needle);
|
||||
if (idx !== -1) {
|
||||
return {row: i, column: idx};
|
||||
}
|
||||
}
|
||||
return this._emptyCompoundIndex;
|
||||
};
|
||||
|
||||
SimulcastUtils.prototype._removeSimulcastGroup = function (lines) {
|
||||
var i;
|
||||
|
||||
for (i = lines.length - 1; i >= 0; i--) {
|
||||
if (lines[i].indexOf('a=ssrc-group:SIM') !== -1) {
|
||||
lines.splice(i, 1);
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
SimulcastUtils.prototype._compileVideoSources = function (videoSources) {
|
||||
var sb = [], ssrc, addedSSRCs = [];
|
||||
|
||||
this.logger.info('Compiling video sources...');
|
||||
|
||||
// Add the groups
|
||||
if (videoSources.groups && videoSources.groups.length !== 0) {
|
||||
videoSources.groups.forEach(function (group) {
|
||||
if (group.ssrcs && group.ssrcs.length !== 0) {
|
||||
sb.push([['a=ssrc-group:', group.semantics].join(''), group.ssrcs.join(' ')].join(' '));
|
||||
|
||||
// if (group.semantics !== 'SIM') {
|
||||
group.ssrcs.forEach(function (ssrc) {
|
||||
addedSSRCs.push(ssrc);
|
||||
sb.splice.apply(sb, [sb.length, 0].concat([
|
||||
["a=ssrc:", ssrc, " cname:", videoSources.sources[ssrc].cname].join(''),
|
||||
["a=ssrc:", ssrc, " msid:", videoSources.sources[ssrc].msid].join('')]));
|
||||
});
|
||||
//}
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
// Then add any free sources.
|
||||
if (videoSources.sources) {
|
||||
for (ssrc in videoSources.sources) {
|
||||
if (addedSSRCs.indexOf(ssrc) === -1) {
|
||||
sb.splice.apply(sb, [sb.length, 0].concat([
|
||||
["a=ssrc:", ssrc, " cname:", videoSources.sources[ssrc].cname].join(''),
|
||||
["a=ssrc:", ssrc, " msid:", videoSources.sources[ssrc].msid].join('')]));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return sb;
|
||||
};
|
||||
|
||||
module.exports = SimulcastUtils;
|
||||
},{"./SimulcastLogger":1}],5:[function(require,module,exports){
|
||||
/*jslint plusplus: true */
|
||||
/*jslint nomen: true*/
|
||||
|
||||
var SimulcastSender = require("./SimulcastSender");
|
||||
var NoSimulcastSender = SimulcastSender["no"];
|
||||
var NativeSimulcastSender = SimulcastSender["native"];
|
||||
var SimulcastReceiver = require("./SimulcastReceiver");
|
||||
var SimulcastUtils = require("./SimulcastUtils");
|
||||
|
||||
|
||||
/**
|
||||
*
|
||||
* @constructor
|
||||
|
|
@ -1213,39 +1272,6 @@ SimulcastManager.prototype.resetSender = function() {
|
|||
}
|
||||
};
|
||||
|
||||
/**
|
||||
*
|
||||
* @constructor
|
||||
*/
|
||||
function SimulcastLogger(name, lvl) {
|
||||
this.name = name;
|
||||
this.lvl = lvl;
|
||||
}
|
||||
|
||||
SimulcastLogger.prototype.log = function (text) {
|
||||
if (this.lvl) {
|
||||
console.log(text);
|
||||
}
|
||||
};
|
||||
|
||||
SimulcastLogger.prototype.info = function (text) {
|
||||
if (this.lvl > 1) {
|
||||
console.info(text);
|
||||
}
|
||||
};
|
||||
|
||||
SimulcastLogger.prototype.fine = function (text) {
|
||||
if (this.lvl > 2) {
|
||||
console.log(text);
|
||||
}
|
||||
};
|
||||
|
||||
SimulcastLogger.prototype.error = function (text) {
|
||||
console.error(text);
|
||||
};
|
||||
|
||||
var simulcast = new SimulcastManager();
|
||||
|
||||
$(document).bind('simulcastlayerschanged', function (event, endpointSimulcastLayers) {
|
||||
endpointSimulcastLayers.forEach(function (esl) {
|
||||
var ssrc = esl.simulcastLayer.primarySSRC;
|
||||
|
|
@ -1262,3 +1288,10 @@ $(document).bind('stopsimulcastlayer', function (event, simulcastLayer) {
|
|||
var ssrc = simulcastLayer.primarySSRC;
|
||||
simulcast._setLocalVideoStreamEnabled(ssrc, false);
|
||||
});
|
||||
|
||||
|
||||
var simulcast = new SimulcastManager();
|
||||
|
||||
module.exports = simulcast;
|
||||
},{"./SimulcastReceiver":2,"./SimulcastSender":3,"./SimulcastUtils":4}]},{},[5])(5)
|
||||
});
|
||||
|
|
@ -0,0 +1,32 @@
|
|||
/**
|
||||
*
|
||||
* @constructor
|
||||
*/
|
||||
function SimulcastLogger(name, lvl) {
|
||||
this.name = name;
|
||||
this.lvl = lvl;
|
||||
}
|
||||
|
||||
SimulcastLogger.prototype.log = function (text) {
|
||||
if (this.lvl) {
|
||||
console.log(text);
|
||||
}
|
||||
};
|
||||
|
||||
SimulcastLogger.prototype.info = function (text) {
|
||||
if (this.lvl > 1) {
|
||||
console.info(text);
|
||||
}
|
||||
};
|
||||
|
||||
SimulcastLogger.prototype.fine = function (text) {
|
||||
if (this.lvl > 2) {
|
||||
console.log(text);
|
||||
}
|
||||
};
|
||||
|
||||
SimulcastLogger.prototype.error = function (text) {
|
||||
console.error(text);
|
||||
};
|
||||
|
||||
module.exports = SimulcastLogger;
|
||||
|
|
@ -0,0 +1,302 @@
|
|||
var SimulcastLogger = require("./SimulcastLogger");
|
||||
var SimulcastUtils = require("./SimulcastUtils");
|
||||
|
||||
function SimulcastReceiver() {
|
||||
this.simulcastUtils = new SimulcastUtils();
|
||||
this.logger = new SimulcastLogger('SimulcastReceiver', 1);
|
||||
}
|
||||
|
||||
SimulcastReceiver.prototype._remoteVideoSourceCache = '';
|
||||
SimulcastReceiver.prototype._remoteMaps = {
|
||||
msid2Quality: {},
|
||||
ssrc2Msid: {},
|
||||
msid2ssrc: {},
|
||||
receivingVideoStreams: {}
|
||||
};
|
||||
|
||||
SimulcastReceiver.prototype._cacheRemoteVideoSources = function (lines) {
|
||||
this._remoteVideoSourceCache = this.simulcastUtils._getVideoSources(lines);
|
||||
};
|
||||
|
||||
SimulcastReceiver.prototype._restoreRemoteVideoSources = function (lines) {
|
||||
this.simulcastUtils._replaceVideoSources(lines, this._remoteVideoSourceCache);
|
||||
};
|
||||
|
||||
SimulcastReceiver.prototype._ensureGoogConference = function (lines) {
|
||||
var sb;
|
||||
|
||||
this.logger.info('Ensuring x-google-conference flag...')
|
||||
|
||||
if (this.simulcastUtils._indexOfArray('a=x-google-flag:conference', lines) === this.simulcastUtils._emptyCompoundIndex) {
|
||||
// TODO(gp) do that for the audio as well as suggested by fippo.
|
||||
// Add the google conference flag
|
||||
sb = this.simulcastUtils._getVideoSources(lines);
|
||||
sb = ['a=x-google-flag:conference'].concat(sb);
|
||||
this.simulcastUtils._replaceVideoSources(lines, sb);
|
||||
}
|
||||
};
|
||||
|
||||
SimulcastReceiver.prototype._restoreSimulcastGroups = function (sb) {
|
||||
this._restoreRemoteVideoSources(sb);
|
||||
};
|
||||
|
||||
/**
|
||||
* Restores the simulcast groups of the remote description. In
|
||||
* transformRemoteDescription we remove those in order for the set remote
|
||||
* description to succeed. The focus needs the signal the groups to new
|
||||
* participants.
|
||||
*
|
||||
* @param desc
|
||||
* @returns {*}
|
||||
*/
|
||||
SimulcastReceiver.prototype.reverseTransformRemoteDescription = function (desc) {
|
||||
var sb;
|
||||
|
||||
if (!this.simulcastUtils.isValidDescription(desc)) {
|
||||
return desc;
|
||||
}
|
||||
|
||||
if (config.enableSimulcast) {
|
||||
sb = desc.sdp.split('\r\n');
|
||||
|
||||
this._restoreSimulcastGroups(sb);
|
||||
|
||||
desc = new RTCSessionDescription({
|
||||
type: desc.type,
|
||||
sdp: sb.join('\r\n')
|
||||
});
|
||||
}
|
||||
|
||||
return desc;
|
||||
};
|
||||
|
||||
SimulcastUtils.prototype._ensureOrder = function (lines) {
|
||||
var videoSources, sb;
|
||||
|
||||
videoSources = this.parseMedia(lines, ['video'])[0];
|
||||
sb = this._compileVideoSources(videoSources);
|
||||
|
||||
this._replaceVideoSources(lines, sb);
|
||||
};
|
||||
|
||||
SimulcastReceiver.prototype._updateRemoteMaps = function (lines) {
|
||||
var remoteVideoSources = this.simulcastUtils.parseMedia(lines, ['video'])[0],
|
||||
videoSource, quality;
|
||||
|
||||
// (re) initialize the remote maps.
|
||||
this._remoteMaps.msid2Quality = {};
|
||||
this._remoteMaps.ssrc2Msid = {};
|
||||
this._remoteMaps.msid2ssrc = {};
|
||||
|
||||
var self = this;
|
||||
if (remoteVideoSources.groups && remoteVideoSources.groups.length !== 0) {
|
||||
remoteVideoSources.groups.forEach(function (group) {
|
||||
if (group.semantics === 'SIM' && group.ssrcs && group.ssrcs.length !== 0) {
|
||||
quality = 0;
|
||||
group.ssrcs.forEach(function (ssrc) {
|
||||
videoSource = remoteVideoSources.sources[ssrc];
|
||||
self._remoteMaps.msid2Quality[videoSource.msid] = quality++;
|
||||
self._remoteMaps.ssrc2Msid[videoSource.ssrc] = videoSource.msid;
|
||||
self._remoteMaps.msid2ssrc[videoSource.msid] = videoSource.ssrc;
|
||||
});
|
||||
}
|
||||
});
|
||||
}
|
||||
};
|
||||
|
||||
SimulcastReceiver.prototype._setReceivingVideoStream = function (resource, ssrc) {
|
||||
this._remoteMaps.receivingVideoStreams[resource] = ssrc;
|
||||
};
|
||||
|
||||
/**
|
||||
* Returns a stream with single video track, the one currently being
|
||||
* received by this endpoint.
|
||||
*
|
||||
* @param stream the remote simulcast stream.
|
||||
* @returns {webkitMediaStream}
|
||||
*/
|
||||
SimulcastReceiver.prototype.getReceivingVideoStream = function (stream) {
|
||||
var tracks, i, electedTrack, msid, quality = 0, receivingTrackId;
|
||||
|
||||
var self = this;
|
||||
if (config.enableSimulcast) {
|
||||
|
||||
stream.getVideoTracks().some(function (track) {
|
||||
return Object.keys(self._remoteMaps.receivingVideoStreams).some(function (resource) {
|
||||
var ssrc = self._remoteMaps.receivingVideoStreams[resource];
|
||||
var msid = self._remoteMaps.ssrc2Msid[ssrc];
|
||||
if (msid == [stream.id, track.id].join(' ')) {
|
||||
electedTrack = track;
|
||||
return true;
|
||||
}
|
||||
});
|
||||
});
|
||||
|
||||
if (!electedTrack) {
|
||||
// we don't have an elected track, choose by initial quality.
|
||||
tracks = stream.getVideoTracks();
|
||||
for (i = 0; i < tracks.length; i++) {
|
||||
msid = [stream.id, tracks[i].id].join(' ');
|
||||
if (this._remoteMaps.msid2Quality[msid] === quality) {
|
||||
electedTrack = tracks[i];
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
// TODO(gp) if the initialQuality could not be satisfied, lower
|
||||
// the requirement and try again.
|
||||
}
|
||||
}
|
||||
|
||||
return (electedTrack)
|
||||
? new webkitMediaStream([electedTrack])
|
||||
: stream;
|
||||
};
|
||||
|
||||
SimulcastReceiver.prototype.getReceivingSSRC = function (jid) {
|
||||
var resource = Strophe.getResourceFromJid(jid);
|
||||
var ssrc = this._remoteMaps.receivingVideoStreams[resource];
|
||||
|
||||
// If we haven't receiving a "changed" event yet, then we must be receiving
|
||||
// low quality (that the sender always streams).
|
||||
if (!ssrc && connection.jingle) {
|
||||
var session;
|
||||
var i, j, k;
|
||||
|
||||
var keys = Object.keys(connection.jingle.sessions);
|
||||
for (i = 0; i < keys.length; i++) {
|
||||
var sid = keys[i];
|
||||
|
||||
if (ssrc) {
|
||||
// stream found, stop.
|
||||
break;
|
||||
}
|
||||
|
||||
session = connection.jingle.sessions[sid];
|
||||
if (session.remoteStreams) {
|
||||
for (j = 0; j < session.remoteStreams.length; j++) {
|
||||
var remoteStream = session.remoteStreams[j];
|
||||
|
||||
if (ssrc) {
|
||||
// stream found, stop.
|
||||
break;
|
||||
}
|
||||
var tracks = remoteStream.getVideoTracks();
|
||||
if (tracks) {
|
||||
for (k = 0; k < tracks.length; k++) {
|
||||
var track = tracks[k];
|
||||
var msid = [remoteStream.id, track.id].join(' ');
|
||||
var _ssrc = this._remoteMaps.msid2ssrc[msid];
|
||||
var _jid = ssrc2jid[_ssrc];
|
||||
var quality = this._remoteMaps.msid2Quality[msid];
|
||||
if (jid == _jid && quality == 0) {
|
||||
ssrc = _ssrc;
|
||||
// stream found, stop.
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return ssrc;
|
||||
};
|
||||
|
||||
SimulcastReceiver.prototype.getReceivingVideoStreamBySSRC = function (ssrc)
|
||||
{
|
||||
var session, electedStream;
|
||||
var i, j, k;
|
||||
if (connection.jingle) {
|
||||
var keys = Object.keys(connection.jingle.sessions);
|
||||
for (i = 0; i < keys.length; i++) {
|
||||
var sid = keys[i];
|
||||
|
||||
if (electedStream) {
|
||||
// stream found, stop.
|
||||
break;
|
||||
}
|
||||
|
||||
session = connection.jingle.sessions[sid];
|
||||
if (session.remoteStreams) {
|
||||
for (j = 0; j < session.remoteStreams.length; j++) {
|
||||
var remoteStream = session.remoteStreams[j];
|
||||
|
||||
if (electedStream) {
|
||||
// stream found, stop.
|
||||
break;
|
||||
}
|
||||
var tracks = remoteStream.getVideoTracks();
|
||||
if (tracks) {
|
||||
for (k = 0; k < tracks.length; k++) {
|
||||
var track = tracks[k];
|
||||
var msid = [remoteStream.id, track.id].join(' ');
|
||||
var tmp = this._remoteMaps.msid2ssrc[msid];
|
||||
if (tmp == ssrc) {
|
||||
electedStream = new webkitMediaStream([track]);
|
||||
// stream found, stop.
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return {
|
||||
session: session,
|
||||
stream: electedStream
|
||||
};
|
||||
};
|
||||
|
||||
/**
|
||||
* Gets the fully qualified msid (stream.id + track.id) associated to the
|
||||
* SSRC.
|
||||
*
|
||||
* @param ssrc
|
||||
* @returns {*}
|
||||
*/
|
||||
SimulcastReceiver.prototype.getRemoteVideoStreamIdBySSRC = function (ssrc) {
|
||||
return this._remoteMaps.ssrc2Msid[ssrc];
|
||||
};
|
||||
|
||||
/**
|
||||
* Removes the ssrc-group:SIM from the remote description bacause Chrome
|
||||
* either gets confused and thinks this is an FID group or, if an FID group
|
||||
* is already present, it fails to set the remote description.
|
||||
*
|
||||
* @param desc
|
||||
* @returns {*}
|
||||
*/
|
||||
SimulcastReceiver.prototype.transformRemoteDescription = function (desc) {
|
||||
|
||||
if (desc && desc.sdp) {
|
||||
var sb = desc.sdp.split('\r\n');
|
||||
|
||||
this._updateRemoteMaps(sb);
|
||||
this._cacheRemoteVideoSources(sb);
|
||||
|
||||
// NOTE(gp) this needs to be called after updateRemoteMaps because we
|
||||
// need the simulcast group in the _updateRemoteMaps() method.
|
||||
this.simulcastUtils._removeSimulcastGroup(sb);
|
||||
|
||||
if (desc.sdp.indexOf('a=ssrc-group:SIM') !== -1) {
|
||||
// We don't need the goog conference flag if we're not doing
|
||||
// simulcast.
|
||||
this._ensureGoogConference(sb);
|
||||
}
|
||||
|
||||
desc = new RTCSessionDescription({
|
||||
type: desc.type,
|
||||
sdp: sb.join('\r\n')
|
||||
});
|
||||
|
||||
this.logger.fine(['Transformed remote description', desc.sdp].join(' '));
|
||||
}
|
||||
|
||||
return desc;
|
||||
};
|
||||
|
||||
module.exports = SimulcastReceiver;
|
||||
|
|
@ -0,0 +1,519 @@
|
|||
var SimulcastLogger = require("./SimulcastLogger");
|
||||
var SimulcastUtils = require("./SimulcastUtils");
|
||||
|
||||
function SimulcastSender() {
|
||||
this.simulcastUtils = new SimulcastUtils();
|
||||
this.logger = new SimulcastLogger('SimulcastSender', 1);
|
||||
}
|
||||
|
||||
SimulcastSender.prototype.displayedLocalVideoStream = null;
|
||||
|
||||
SimulcastSender.prototype._generateGuid = (function () {
|
||||
function s4() {
|
||||
return Math.floor((1 + Math.random()) * 0x10000)
|
||||
.toString(16)
|
||||
.substring(1);
|
||||
}
|
||||
|
||||
return function () {
|
||||
return s4() + s4() + '-' + s4() + '-' + s4() + '-' +
|
||||
s4() + '-' + s4() + s4() + s4();
|
||||
};
|
||||
}());
|
||||
|
||||
// Returns a random integer between min (included) and max (excluded)
|
||||
// Using Math.round() gives a non-uniform distribution!
|
||||
SimulcastSender.prototype._generateRandomSSRC = function () {
|
||||
var min = 0, max = 0xffffffff;
|
||||
return Math.floor(Math.random() * (max - min)) + min;
|
||||
};
|
||||
|
||||
SimulcastSender.prototype.getLocalVideoStream = function () {
|
||||
return (this.displayedLocalVideoStream != null)
|
||||
? this.displayedLocalVideoStream
|
||||
// in case we have no simulcast at all, i.e. we didn't perform the GUM
|
||||
: connection.jingle.localVideo;
|
||||
};
|
||||
|
||||
function NativeSimulcastSender() {
|
||||
SimulcastSender.call(this); // call the super constructor.
|
||||
}
|
||||
|
||||
NativeSimulcastSender.prototype = Object.create(SimulcastSender.prototype);
|
||||
|
||||
NativeSimulcastSender.prototype._localExplosionMap = {};
|
||||
NativeSimulcastSender.prototype._isUsingScreenStream = false;
|
||||
NativeSimulcastSender.prototype._localVideoSourceCache = '';
|
||||
|
||||
NativeSimulcastSender.prototype.reset = function () {
|
||||
this._localExplosionMap = {};
|
||||
this._isUsingScreenStream = isUsingScreenStream;
|
||||
};
|
||||
|
||||
NativeSimulcastSender.prototype._cacheLocalVideoSources = function (lines) {
|
||||
this._localVideoSourceCache = this.simulcastUtils._getVideoSources(lines);
|
||||
};
|
||||
|
||||
NativeSimulcastSender.prototype._restoreLocalVideoSources = function (lines) {
|
||||
this.simulcastUtils._replaceVideoSources(lines, this._localVideoSourceCache);
|
||||
};
|
||||
|
||||
NativeSimulcastSender.prototype._appendSimulcastGroup = function (lines) {
|
||||
var videoSources, ssrcGroup, simSSRC, numOfSubs = 2, i, sb, msid;
|
||||
|
||||
this.logger.info('Appending simulcast group...');
|
||||
|
||||
// Get the primary SSRC information.
|
||||
videoSources = this.simulcastUtils.parseMedia(lines, ['video'])[0];
|
||||
|
||||
// Start building the SIM SSRC group.
|
||||
ssrcGroup = ['a=ssrc-group:SIM'];
|
||||
|
||||
// The video source buffer.
|
||||
sb = [];
|
||||
|
||||
// Create the simulcast sub-streams.
|
||||
for (i = 0; i < numOfSubs; i++) {
|
||||
// TODO(gp) prevent SSRC collision.
|
||||
simSSRC = this._generateRandomSSRC();
|
||||
ssrcGroup.push(simSSRC);
|
||||
|
||||
sb.splice.apply(sb, [sb.length, 0].concat(
|
||||
[["a=ssrc:", simSSRC, " cname:", videoSources.base.cname].join(''),
|
||||
["a=ssrc:", simSSRC, " msid:", videoSources.base.msid].join('')]
|
||||
));
|
||||
|
||||
this.logger.info(['Generated substream ', i, ' with SSRC ', simSSRC, '.'].join(''));
|
||||
|
||||
}
|
||||
|
||||
// Add the group sim layers.
|
||||
sb.splice(0, 0, ssrcGroup.join(' '))
|
||||
|
||||
this.simulcastUtils._replaceVideoSources(lines, sb);
|
||||
};
|
||||
|
||||
// Does the actual patching.
|
||||
NativeSimulcastSender.prototype._ensureSimulcastGroup = function (lines) {
|
||||
|
||||
this.logger.info('Ensuring simulcast group...');
|
||||
|
||||
if (this.simulcastUtils._indexOfArray('a=ssrc-group:SIM', lines) === this.simulcastUtils._emptyCompoundIndex) {
|
||||
this._appendSimulcastGroup(lines);
|
||||
this._cacheLocalVideoSources(lines);
|
||||
} else {
|
||||
// verify that the ssrcs participating in the SIM group are present
|
||||
// in the SDP (needed for presence).
|
||||
this._restoreLocalVideoSources(lines);
|
||||
}
|
||||
};
|
||||
|
||||
/**
|
||||
* Produces a single stream with multiple tracks for local video sources.
|
||||
*
|
||||
* @param lines
|
||||
* @private
|
||||
*/
|
||||
NativeSimulcastSender.prototype._explodeSimulcastSenderSources = function (lines) {
|
||||
var sb, msid, sid, tid, videoSources, self;
|
||||
|
||||
this.logger.info('Exploding local video sources...');
|
||||
|
||||
videoSources = this.simulcastUtils.parseMedia(lines, ['video'])[0];
|
||||
|
||||
self = this;
|
||||
if (videoSources.groups && videoSources.groups.length !== 0) {
|
||||
videoSources.groups.forEach(function (group) {
|
||||
if (group.semantics === 'SIM') {
|
||||
group.ssrcs.forEach(function (ssrc) {
|
||||
|
||||
// Get the msid for this ssrc..
|
||||
if (self._localExplosionMap[ssrc]) {
|
||||
// .. either from the explosion map..
|
||||
msid = self._localExplosionMap[ssrc];
|
||||
} else {
|
||||
// .. or generate a new one (msid).
|
||||
sid = videoSources.sources[ssrc].msid
|
||||
.substring(0, videoSources.sources[ssrc].msid.indexOf(' '));
|
||||
|
||||
tid = self._generateGuid();
|
||||
msid = [sid, tid].join(' ');
|
||||
self._localExplosionMap[ssrc] = msid;
|
||||
}
|
||||
|
||||
// Assign it to the source object.
|
||||
videoSources.sources[ssrc].msid = msid;
|
||||
|
||||
// TODO(gp) Change the msid of associated sources.
|
||||
});
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
sb = this.simulcastUtils._compileVideoSources(videoSources);
|
||||
|
||||
this.simulcastUtils._replaceVideoSources(lines, sb);
|
||||
};
|
||||
|
||||
/**
|
||||
* GUM for simulcast.
|
||||
*
|
||||
* @param constraints
|
||||
* @param success
|
||||
* @param err
|
||||
*/
|
||||
NativeSimulcastSender.prototype.getUserMedia = function (constraints, success, err) {
|
||||
|
||||
// There's nothing special to do for native simulcast, so just do a normal GUM.
|
||||
navigator.webkitGetUserMedia(constraints, function (hqStream) {
|
||||
success(hqStream);
|
||||
}, err);
|
||||
};
|
||||
|
||||
/**
|
||||
* Prepares the local description for public usage (i.e. to be signaled
|
||||
* through Jingle to the focus).
|
||||
*
|
||||
* @param desc
|
||||
* @returns {RTCSessionDescription}
|
||||
*/
|
||||
NativeSimulcastSender.prototype.reverseTransformLocalDescription = function (desc) {
|
||||
var sb;
|
||||
|
||||
if (!this.simulcastUtils.isValidDescription(desc) || this._isUsingScreenStream) {
|
||||
return desc;
|
||||
}
|
||||
|
||||
|
||||
sb = desc.sdp.split('\r\n');
|
||||
|
||||
this._explodeSimulcastSenderSources(sb);
|
||||
|
||||
desc = new RTCSessionDescription({
|
||||
type: desc.type,
|
||||
sdp: sb.join('\r\n')
|
||||
});
|
||||
|
||||
this.logger.fine(['Exploded local video sources', desc.sdp].join(' '));
|
||||
|
||||
return desc;
|
||||
};
|
||||
|
||||
/**
|
||||
* Ensures that the simulcast group is present in the answer, _if_ native
|
||||
* simulcast is enabled,
|
||||
*
|
||||
* @param desc
|
||||
* @returns {*}
|
||||
*/
|
||||
NativeSimulcastSender.prototype.transformAnswer = function (desc) {
|
||||
|
||||
if (!this.simulcastUtils.isValidDescription(desc) || this._isUsingScreenStream) {
|
||||
return desc;
|
||||
}
|
||||
|
||||
var sb = desc.sdp.split('\r\n');
|
||||
|
||||
// Even if we have enabled native simulcasting previously
|
||||
// (with a call to SLD with an appropriate SDP, for example),
|
||||
// createAnswer seems to consistently generate incomplete SDP
|
||||
// with missing SSRCS.
|
||||
//
|
||||
// So, subsequent calls to SLD will have missing SSRCS and presence
|
||||
// won't have the complete list of SRCs.
|
||||
this._ensureSimulcastGroup(sb);
|
||||
|
||||
desc = new RTCSessionDescription({
|
||||
type: desc.type,
|
||||
sdp: sb.join('\r\n')
|
||||
});
|
||||
|
||||
this.logger.fine(['Transformed answer', desc.sdp].join(' '));
|
||||
|
||||
return desc;
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
*
|
||||
*
|
||||
* @param desc
|
||||
* @returns {*}
|
||||
*/
|
||||
NativeSimulcastSender.prototype.transformLocalDescription = function (desc) {
|
||||
return desc;
|
||||
};
|
||||
|
||||
NativeSimulcastSender.prototype._setLocalVideoStreamEnabled = function (ssrc, enabled) {
|
||||
// Nothing to do here, native simulcast does that auto-magically.
|
||||
};
|
||||
|
||||
NativeSimulcastSender.prototype.constructor = NativeSimulcastSender;
|
||||
|
||||
function SimpleSimulcastSender() {
|
||||
SimulcastSender.call(this);
|
||||
}
|
||||
|
||||
SimpleSimulcastSender.prototype = Object.create(SimulcastSender.prototype);
|
||||
|
||||
SimpleSimulcastSender.prototype.localStream = null;
|
||||
SimpleSimulcastSender.prototype._localMaps = {
|
||||
msids: [],
|
||||
msid2ssrc: {}
|
||||
};
|
||||
|
||||
/**
|
||||
* Groups local video sources together in the ssrc-group:SIM group.
|
||||
*
|
||||
* @param lines
|
||||
* @private
|
||||
*/
|
||||
SimpleSimulcastSender.prototype._groupLocalVideoSources = function (lines) {
|
||||
var sb, videoSources, ssrcs = [], ssrc;
|
||||
|
||||
this.logger.info('Grouping local video sources...');
|
||||
|
||||
videoSources = this.simulcastUtils.parseMedia(lines, ['video'])[0];
|
||||
|
||||
for (ssrc in videoSources.sources) {
|
||||
// jitsi-meet destroys/creates streams at various places causing
|
||||
// the original local stream ids to change. The only thing that
|
||||
// remains unchanged is the trackid.
|
||||
this._localMaps.msid2ssrc[videoSources.sources[ssrc].msid.split(' ')[1]] = ssrc;
|
||||
}
|
||||
|
||||
var self = this;
|
||||
// TODO(gp) add only "free" sources.
|
||||
this._localMaps.msids.forEach(function (msid) {
|
||||
ssrcs.push(self._localMaps.msid2ssrc[msid]);
|
||||
});
|
||||
|
||||
if (!videoSources.groups) {
|
||||
videoSources.groups = [];
|
||||
}
|
||||
|
||||
videoSources.groups.push({
|
||||
'semantics': 'SIM',
|
||||
'ssrcs': ssrcs
|
||||
});
|
||||
|
||||
sb = this.simulcastUtils._compileVideoSources(videoSources);
|
||||
|
||||
this.simulcastUtils._replaceVideoSources(lines, sb);
|
||||
};
|
||||
|
||||
/**
|
||||
* GUM for simulcast.
|
||||
*
|
||||
* @param constraints
|
||||
* @param success
|
||||
* @param err
|
||||
*/
|
||||
SimpleSimulcastSender.prototype.getUserMedia = function (constraints, success, err) {
|
||||
|
||||
// TODO(gp) what if we request a resolution not supported by the hardware?
|
||||
// TODO(gp) make the lq stream configurable; although this wouldn't work with native simulcast
|
||||
var lqConstraints = {
|
||||
audio: false,
|
||||
video: {
|
||||
mandatory: {
|
||||
maxWidth: 320,
|
||||
maxHeight: 180,
|
||||
maxFrameRate: 15
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
this.logger.info('HQ constraints: ', constraints);
|
||||
this.logger.info('LQ constraints: ', lqConstraints);
|
||||
|
||||
|
||||
// NOTE(gp) if we request the lq stream first webkitGetUserMedia
|
||||
// fails randomly. Tested with Chrome 37. As fippo suggested, the
|
||||
// reason appears to be that Chrome only acquires the cam once and
|
||||
// then downscales the picture (https://code.google.com/p/chromium/issues/detail?id=346616#c11)
|
||||
|
||||
var self = this;
|
||||
navigator.webkitGetUserMedia(constraints, function (hqStream) {
|
||||
|
||||
self.localStream = hqStream;
|
||||
|
||||
// reset local maps.
|
||||
self._localMaps.msids = [];
|
||||
self._localMaps.msid2ssrc = {};
|
||||
|
||||
// add hq trackid to local map
|
||||
self._localMaps.msids.push(hqStream.getVideoTracks()[0].id);
|
||||
|
||||
navigator.webkitGetUserMedia(lqConstraints, function (lqStream) {
|
||||
|
||||
self.displayedLocalVideoStream = lqStream;
|
||||
|
||||
// NOTE(gp) The specification says Array.forEach() will visit
|
||||
// the array elements in numeric order, and that it doesn't
|
||||
// visit elements that don't exist.
|
||||
|
||||
// add lq trackid to local map
|
||||
self._localMaps.msids.splice(0, 0, lqStream.getVideoTracks()[0].id);
|
||||
|
||||
self.localStream.addTrack(lqStream.getVideoTracks()[0]);
|
||||
success(self.localStream);
|
||||
}, err);
|
||||
}, err);
|
||||
};
|
||||
|
||||
/**
|
||||
* Prepares the local description for public usage (i.e. to be signaled
|
||||
* through Jingle to the focus).
|
||||
*
|
||||
* @param desc
|
||||
* @returns {RTCSessionDescription}
|
||||
*/
|
||||
SimpleSimulcastSender.prototype.reverseTransformLocalDescription = function (desc) {
|
||||
var sb;
|
||||
|
||||
if (!this.simulcastUtils.isValidDescription(desc)) {
|
||||
return desc;
|
||||
}
|
||||
|
||||
sb = desc.sdp.split('\r\n');
|
||||
|
||||
this._groupLocalVideoSources(sb);
|
||||
|
||||
desc = new RTCSessionDescription({
|
||||
type: desc.type,
|
||||
sdp: sb.join('\r\n')
|
||||
});
|
||||
|
||||
this.logger.fine('Grouped local video sources');
|
||||
this.logger.fine(desc.sdp);
|
||||
|
||||
return desc;
|
||||
};
|
||||
|
||||
/**
|
||||
* Ensures that the simulcast group is present in the answer, _if_ native
|
||||
* simulcast is enabled,
|
||||
*
|
||||
* @param desc
|
||||
* @returns {*}
|
||||
*/
|
||||
SimpleSimulcastSender.prototype.transformAnswer = function (desc) {
|
||||
return desc;
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
*
|
||||
*
|
||||
* @param desc
|
||||
* @returns {*}
|
||||
*/
|
||||
SimpleSimulcastSender.prototype.transformLocalDescription = function (desc) {
|
||||
|
||||
var sb = desc.sdp.split('\r\n');
|
||||
|
||||
this.simulcastUtils._removeSimulcastGroup(sb);
|
||||
|
||||
desc = new RTCSessionDescription({
|
||||
type: desc.type,
|
||||
sdp: sb.join('\r\n')
|
||||
});
|
||||
|
||||
this.logger.fine('Transformed local description');
|
||||
this.logger.fine(desc.sdp);
|
||||
|
||||
return desc;
|
||||
};
|
||||
|
||||
SimpleSimulcastSender.prototype._setLocalVideoStreamEnabled = function (ssrc, enabled) {
|
||||
var trackid;
|
||||
|
||||
var self = this;
|
||||
this.logger.log(['Requested to', enabled ? 'enable' : 'disable', ssrc].join(' '));
|
||||
if (Object.keys(this._localMaps.msid2ssrc).some(function (tid) {
|
||||
// Search for the track id that corresponds to the ssrc
|
||||
if (self._localMaps.msid2ssrc[tid] == ssrc) {
|
||||
trackid = tid;
|
||||
return true;
|
||||
}
|
||||
}) && self.localStream.getVideoTracks().some(function (track) {
|
||||
// Start/stop the track that corresponds to the track id
|
||||
if (track.id === trackid) {
|
||||
track.enabled = enabled;
|
||||
return true;
|
||||
}
|
||||
})) {
|
||||
this.logger.log([trackid, enabled ? 'enabled' : 'disabled'].join(' '));
|
||||
$(document).trigger(enabled
|
||||
? 'simulcastlayerstarted'
|
||||
: 'simulcastlayerstopped');
|
||||
} else {
|
||||
this.logger.error("I don't have a local stream with SSRC " + ssrc);
|
||||
}
|
||||
};
|
||||
|
||||
SimpleSimulcastSender.prototype.constructor = SimpleSimulcastSender;
|
||||
|
||||
function NoSimulcastSender() {
|
||||
SimulcastSender.call(this);
|
||||
}
|
||||
|
||||
NoSimulcastSender.prototype = Object.create(SimulcastSender.prototype);
|
||||
|
||||
/**
|
||||
* GUM for simulcast.
|
||||
*
|
||||
* @param constraints
|
||||
* @param success
|
||||
* @param err
|
||||
*/
|
||||
NoSimulcastSender.prototype.getUserMedia = function (constraints, success, err) {
|
||||
navigator.webkitGetUserMedia(constraints, function (hqStream) {
|
||||
success(hqStream);
|
||||
}, err);
|
||||
};
|
||||
|
||||
/**
|
||||
* Prepares the local description for public usage (i.e. to be signaled
|
||||
* through Jingle to the focus).
|
||||
*
|
||||
* @param desc
|
||||
* @returns {RTCSessionDescription}
|
||||
*/
|
||||
NoSimulcastSender.prototype.reverseTransformLocalDescription = function (desc) {
|
||||
return desc;
|
||||
};
|
||||
|
||||
/**
|
||||
* Ensures that the simulcast group is present in the answer, _if_ native
|
||||
* simulcast is enabled,
|
||||
*
|
||||
* @param desc
|
||||
* @returns {*}
|
||||
*/
|
||||
NoSimulcastSender.prototype.transformAnswer = function (desc) {
|
||||
return desc;
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
*
|
||||
*
|
||||
* @param desc
|
||||
* @returns {*}
|
||||
*/
|
||||
NoSimulcastSender.prototype.transformLocalDescription = function (desc) {
|
||||
return desc;
|
||||
};
|
||||
|
||||
NoSimulcastSender.prototype._setLocalVideoStreamEnabled = function (ssrc, enabled) {
|
||||
|
||||
};
|
||||
|
||||
NoSimulcastSender.prototype.constructor = NoSimulcastSender;
|
||||
|
||||
module.exports = {
|
||||
"native": NativeSimulcastSender,
|
||||
"no": NoSimulcastSender
|
||||
}
|
||||
|
|
@ -0,0 +1,233 @@
|
|||
var SimulcastLogger = require("./SimulcastLogger");
|
||||
|
||||
/**
|
||||
*
|
||||
* @constructor
|
||||
*/
|
||||
function SimulcastUtils() {
|
||||
this.logger = new SimulcastLogger("SimulcastUtils", 1);
|
||||
}
|
||||
|
||||
/**
|
||||
*
|
||||
* @type {{}}
|
||||
* @private
|
||||
*/
|
||||
SimulcastUtils.prototype._emptyCompoundIndex = {};
|
||||
|
||||
/**
|
||||
*
|
||||
* @param lines
|
||||
* @param videoSources
|
||||
* @private
|
||||
*/
|
||||
SimulcastUtils.prototype._replaceVideoSources = function (lines, videoSources) {
|
||||
var i, inVideo = false, index = -1, howMany = 0;
|
||||
|
||||
this.logger.info('Replacing video sources...');
|
||||
|
||||
for (i = 0; i < lines.length; i++) {
|
||||
if (inVideo && lines[i].substring(0, 'm='.length) === 'm=') {
|
||||
// Out of video.
|
||||
break;
|
||||
}
|
||||
|
||||
if (!inVideo && lines[i].substring(0, 'm=video '.length) === 'm=video ') {
|
||||
// In video.
|
||||
inVideo = true;
|
||||
}
|
||||
|
||||
if (inVideo && (lines[i].substring(0, 'a=ssrc:'.length) === 'a=ssrc:'
|
||||
|| lines[i].substring(0, 'a=ssrc-group:'.length) === 'a=ssrc-group:')) {
|
||||
|
||||
if (index === -1) {
|
||||
index = i;
|
||||
}
|
||||
|
||||
howMany++;
|
||||
}
|
||||
}
|
||||
|
||||
// efficiency baby ;)
|
||||
lines.splice.apply(lines,
|
||||
[index, howMany].concat(videoSources));
|
||||
|
||||
};
|
||||
|
||||
SimulcastUtils.prototype.isValidDescription = function (desc)
|
||||
{
|
||||
return desc && desc != null
|
||||
&& desc.type && desc.type != ''
|
||||
&& desc.sdp && desc.sdp != '';
|
||||
};
|
||||
|
||||
SimulcastUtils.prototype._getVideoSources = function (lines) {
|
||||
var i, inVideo = false, sb = [];
|
||||
|
||||
this.logger.info('Getting video sources...');
|
||||
|
||||
for (i = 0; i < lines.length; i++) {
|
||||
if (inVideo && lines[i].substring(0, 'm='.length) === 'm=') {
|
||||
// Out of video.
|
||||
break;
|
||||
}
|
||||
|
||||
if (!inVideo && lines[i].substring(0, 'm=video '.length) === 'm=video ') {
|
||||
// In video.
|
||||
inVideo = true;
|
||||
}
|
||||
|
||||
if (inVideo && lines[i].substring(0, 'a=ssrc:'.length) === 'a=ssrc:') {
|
||||
// In SSRC.
|
||||
sb.push(lines[i]);
|
||||
}
|
||||
|
||||
if (inVideo && lines[i].substring(0, 'a=ssrc-group:'.length) === 'a=ssrc-group:') {
|
||||
sb.push(lines[i]);
|
||||
}
|
||||
}
|
||||
|
||||
return sb;
|
||||
};
|
||||
|
||||
SimulcastUtils.prototype.parseMedia = function (lines, mediatypes) {
|
||||
var i, res = [], type, cur_media, idx, ssrcs, cur_ssrc, ssrc,
|
||||
ssrc_attribute, group, semantics, skip = true;
|
||||
|
||||
this.logger.info('Parsing media sources...');
|
||||
|
||||
for (i = 0; i < lines.length; i++) {
|
||||
if (lines[i].substring(0, 'm='.length) === 'm=') {
|
||||
|
||||
type = lines[i]
|
||||
.substr('m='.length, lines[i].indexOf(' ') - 'm='.length);
|
||||
skip = mediatypes !== undefined && mediatypes.indexOf(type) === -1;
|
||||
|
||||
if (!skip) {
|
||||
cur_media = {
|
||||
'type': type,
|
||||
'sources': {},
|
||||
'groups': []
|
||||
};
|
||||
|
||||
res.push(cur_media);
|
||||
}
|
||||
|
||||
} else if (!skip && lines[i].substring(0, 'a=ssrc:'.length) === 'a=ssrc:') {
|
||||
|
||||
idx = lines[i].indexOf(' ');
|
||||
ssrc = lines[i].substring('a=ssrc:'.length, idx);
|
||||
if (cur_media.sources[ssrc] === undefined) {
|
||||
cur_ssrc = {'ssrc': ssrc};
|
||||
cur_media.sources[ssrc] = cur_ssrc;
|
||||
}
|
||||
|
||||
ssrc_attribute = lines[i].substr(idx + 1).split(':', 2)[0];
|
||||
cur_ssrc[ssrc_attribute] = lines[i].substr(idx + 1).split(':', 2)[1];
|
||||
|
||||
if (cur_media.base === undefined) {
|
||||
cur_media.base = cur_ssrc;
|
||||
}
|
||||
|
||||
} else if (!skip && lines[i].substring(0, 'a=ssrc-group:'.length) === 'a=ssrc-group:') {
|
||||
idx = lines[i].indexOf(' ');
|
||||
semantics = lines[i].substr(0, idx).substr('a=ssrc-group:'.length);
|
||||
ssrcs = lines[i].substr(idx).trim().split(' ');
|
||||
group = {
|
||||
'semantics': semantics,
|
||||
'ssrcs': ssrcs
|
||||
};
|
||||
cur_media.groups.push(group);
|
||||
} else if (!skip && (lines[i].substring(0, 'a=sendrecv'.length) === 'a=sendrecv' ||
|
||||
lines[i].substring(0, 'a=recvonly'.length) === 'a=recvonly' ||
|
||||
lines[i].substring(0, 'a=sendonly'.length) === 'a=sendonly' ||
|
||||
lines[i].substring(0, 'a=inactive'.length) === 'a=inactive')) {
|
||||
|
||||
cur_media.direction = lines[i].substring('a='.length);
|
||||
}
|
||||
}
|
||||
|
||||
return res;
|
||||
};
|
||||
|
||||
/**
|
||||
* The _indexOfArray() method returns the first a CompoundIndex at which a
|
||||
* given element can be found in the array, or _emptyCompoundIndex if it is
|
||||
* not present.
|
||||
*
|
||||
* Example:
|
||||
*
|
||||
* _indexOfArray('3', [ 'this is line 1', 'this is line 2', 'this is line 3' ])
|
||||
*
|
||||
* returns {row: 2, column: 14}
|
||||
*
|
||||
* @param needle
|
||||
* @param haystack
|
||||
* @param start
|
||||
* @returns {}
|
||||
* @private
|
||||
*/
|
||||
SimulcastUtils.prototype._indexOfArray = function (needle, haystack, start) {
|
||||
var length = haystack.length, idx, i;
|
||||
|
||||
if (!start) {
|
||||
start = 0;
|
||||
}
|
||||
|
||||
for (i = start; i < length; i++) {
|
||||
idx = haystack[i].indexOf(needle);
|
||||
if (idx !== -1) {
|
||||
return {row: i, column: idx};
|
||||
}
|
||||
}
|
||||
return this._emptyCompoundIndex;
|
||||
};
|
||||
|
||||
SimulcastUtils.prototype._removeSimulcastGroup = function (lines) {
|
||||
var i;
|
||||
|
||||
for (i = lines.length - 1; i >= 0; i--) {
|
||||
if (lines[i].indexOf('a=ssrc-group:SIM') !== -1) {
|
||||
lines.splice(i, 1);
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
SimulcastUtils.prototype._compileVideoSources = function (videoSources) {
|
||||
var sb = [], ssrc, addedSSRCs = [];
|
||||
|
||||
this.logger.info('Compiling video sources...');
|
||||
|
||||
// Add the groups
|
||||
if (videoSources.groups && videoSources.groups.length !== 0) {
|
||||
videoSources.groups.forEach(function (group) {
|
||||
if (group.ssrcs && group.ssrcs.length !== 0) {
|
||||
sb.push([['a=ssrc-group:', group.semantics].join(''), group.ssrcs.join(' ')].join(' '));
|
||||
|
||||
// if (group.semantics !== 'SIM') {
|
||||
group.ssrcs.forEach(function (ssrc) {
|
||||
addedSSRCs.push(ssrc);
|
||||
sb.splice.apply(sb, [sb.length, 0].concat([
|
||||
["a=ssrc:", ssrc, " cname:", videoSources.sources[ssrc].cname].join(''),
|
||||
["a=ssrc:", ssrc, " msid:", videoSources.sources[ssrc].msid].join('')]));
|
||||
});
|
||||
//}
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
// Then add any free sources.
|
||||
if (videoSources.sources) {
|
||||
for (ssrc in videoSources.sources) {
|
||||
if (addedSSRCs.indexOf(ssrc) === -1) {
|
||||
sb.splice.apply(sb, [sb.length, 0].concat([
|
||||
["a=ssrc:", ssrc, " cname:", videoSources.sources[ssrc].cname].join(''),
|
||||
["a=ssrc:", ssrc, " msid:", videoSources.sources[ssrc].msid].join('')]));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return sb;
|
||||
};
|
||||
|
||||
module.exports = SimulcastUtils;
|
||||
|
|
@ -0,0 +1,203 @@
|
|||
/*jslint plusplus: true */
|
||||
/*jslint nomen: true*/
|
||||
|
||||
var SimulcastSender = require("./SimulcastSender");
|
||||
var NoSimulcastSender = SimulcastSender["no"];
|
||||
var NativeSimulcastSender = SimulcastSender["native"];
|
||||
var SimulcastReceiver = require("./SimulcastReceiver");
|
||||
var SimulcastUtils = require("./SimulcastUtils");
|
||||
|
||||
|
||||
/**
|
||||
*
|
||||
* @constructor
|
||||
*/
|
||||
function SimulcastManager() {
|
||||
|
||||
// Create the simulcast utilities.
|
||||
this.simulcastUtils = new SimulcastUtils();
|
||||
|
||||
// Create remote simulcast.
|
||||
this.simulcastReceiver = new SimulcastReceiver();
|
||||
|
||||
// Initialize local simulcast.
|
||||
|
||||
// TODO(gp) move into SimulcastManager.prototype.getUserMedia and take into
|
||||
// account constraints.
|
||||
if (!config.enableSimulcast) {
|
||||
this.simulcastSender = new NoSimulcastSender();
|
||||
} else {
|
||||
|
||||
var isChromium = window.chrome,
|
||||
vendorName = window.navigator.vendor;
|
||||
if(isChromium !== null && isChromium !== undefined
|
||||
/* skip opera */
|
||||
&& vendorName === "Google Inc."
|
||||
/* skip Chromium as suggested by fippo */
|
||||
&& !window.navigator.appVersion.match(/Chromium\//) ) {
|
||||
var ver = parseInt(window.navigator.appVersion.match(/Chrome\/(\d+)\./)[1], 10);
|
||||
if (ver > 37) {
|
||||
this.simulcastSender = new NativeSimulcastSender();
|
||||
} else {
|
||||
this.simulcastSender = new NoSimulcastSender();
|
||||
}
|
||||
} else {
|
||||
this.simulcastSender = new NoSimulcastSender();
|
||||
}
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Restores the simulcast groups of the remote description. In
|
||||
* transformRemoteDescription we remove those in order for the set remote
|
||||
* description to succeed. The focus needs the signal the groups to new
|
||||
* participants.
|
||||
*
|
||||
* @param desc
|
||||
* @returns {*}
|
||||
*/
|
||||
SimulcastManager.prototype.reverseTransformRemoteDescription = function (desc) {
|
||||
return this.simulcastReceiver.reverseTransformRemoteDescription(desc);
|
||||
};
|
||||
|
||||
/**
|
||||
* Removes the ssrc-group:SIM from the remote description bacause Chrome
|
||||
* either gets confused and thinks this is an FID group or, if an FID group
|
||||
* is already present, it fails to set the remote description.
|
||||
*
|
||||
* @param desc
|
||||
* @returns {*}
|
||||
*/
|
||||
SimulcastManager.prototype.transformRemoteDescription = function (desc) {
|
||||
return this.simulcastReceiver.transformRemoteDescription(desc);
|
||||
};
|
||||
|
||||
/**
|
||||
* Gets the fully qualified msid (stream.id + track.id) associated to the
|
||||
* SSRC.
|
||||
*
|
||||
* @param ssrc
|
||||
* @returns {*}
|
||||
*/
|
||||
SimulcastManager.prototype.getRemoteVideoStreamIdBySSRC = function (ssrc) {
|
||||
return this.simulcastReceiver.getRemoteVideoStreamIdBySSRC(ssrc);
|
||||
};
|
||||
|
||||
/**
|
||||
* Returns a stream with single video track, the one currently being
|
||||
* received by this endpoint.
|
||||
*
|
||||
* @param stream the remote simulcast stream.
|
||||
* @returns {webkitMediaStream}
|
||||
*/
|
||||
SimulcastManager.prototype.getReceivingVideoStream = function (stream) {
|
||||
return this.simulcastReceiver.getReceivingVideoStream(stream);
|
||||
};
|
||||
|
||||
/**
|
||||
*
|
||||
*
|
||||
* @param desc
|
||||
* @returns {*}
|
||||
*/
|
||||
SimulcastManager.prototype.transformLocalDescription = function (desc) {
|
||||
return this.simulcastSender.transformLocalDescription(desc);
|
||||
};
|
||||
|
||||
/**
|
||||
*
|
||||
* @returns {*}
|
||||
*/
|
||||
SimulcastManager.prototype.getLocalVideoStream = function() {
|
||||
return this.simulcastSender.getLocalVideoStream();
|
||||
};
|
||||
|
||||
/**
|
||||
* GUM for simulcast.
|
||||
*
|
||||
* @param constraints
|
||||
* @param success
|
||||
* @param err
|
||||
*/
|
||||
SimulcastManager.prototype.getUserMedia = function (constraints, success, err) {
|
||||
|
||||
this.simulcastSender.getUserMedia(constraints, success, err);
|
||||
};
|
||||
|
||||
/**
|
||||
* Prepares the local description for public usage (i.e. to be signaled
|
||||
* through Jingle to the focus).
|
||||
*
|
||||
* @param desc
|
||||
* @returns {RTCSessionDescription}
|
||||
*/
|
||||
SimulcastManager.prototype.reverseTransformLocalDescription = function (desc) {
|
||||
return this.simulcastSender.reverseTransformLocalDescription(desc);
|
||||
};
|
||||
|
||||
/**
|
||||
* Ensures that the simulcast group is present in the answer, _if_ native
|
||||
* simulcast is enabled,
|
||||
*
|
||||
* @param desc
|
||||
* @returns {*}
|
||||
*/
|
||||
SimulcastManager.prototype.transformAnswer = function (desc) {
|
||||
return this.simulcastSender.transformAnswer(desc);
|
||||
};
|
||||
|
||||
SimulcastManager.prototype.getReceivingSSRC = function (jid) {
|
||||
return this.simulcastReceiver.getReceivingSSRC(jid);
|
||||
};
|
||||
|
||||
SimulcastManager.prototype.getReceivingVideoStreamBySSRC = function (msid) {
|
||||
return this.simulcastReceiver.getReceivingVideoStreamBySSRC(msid);
|
||||
};
|
||||
|
||||
/**
|
||||
*
|
||||
* @param lines
|
||||
* @param mediatypes
|
||||
* @returns {*}
|
||||
*/
|
||||
SimulcastManager.prototype.parseMedia = function(lines, mediatypes) {
|
||||
var sb = lines.sdp.split('\r\n');
|
||||
return this.simulcastUtils.parseMedia(sb, mediatypes);
|
||||
};
|
||||
|
||||
SimulcastManager.prototype._setReceivingVideoStream = function(resource, ssrc) {
|
||||
this.simulcastReceiver._setReceivingVideoStream(resource, ssrc);
|
||||
};
|
||||
|
||||
SimulcastManager.prototype._setLocalVideoStreamEnabled = function(ssrc, enabled) {
|
||||
this.simulcastSender._setLocalVideoStreamEnabled(ssrc, enabled);
|
||||
};
|
||||
|
||||
SimulcastManager.prototype.resetSender = function() {
|
||||
if (typeof this.simulcastSender.reset === 'function'){
|
||||
this.simulcastSender.reset();
|
||||
}
|
||||
};
|
||||
|
||||
$(document).bind('simulcastlayerschanged', function (event, endpointSimulcastLayers) {
|
||||
endpointSimulcastLayers.forEach(function (esl) {
|
||||
var ssrc = esl.simulcastLayer.primarySSRC;
|
||||
simulcast._setReceivingVideoStream(esl.endpoint, ssrc);
|
||||
});
|
||||
});
|
||||
|
||||
$(document).bind('startsimulcastlayer', function (event, simulcastLayer) {
|
||||
var ssrc = simulcastLayer.primarySSRC;
|
||||
simulcast._setLocalVideoStreamEnabled(ssrc, true);
|
||||
});
|
||||
|
||||
$(document).bind('stopsimulcastlayer', function (event, simulcastLayer) {
|
||||
var ssrc = simulcastLayer.primarySSRC;
|
||||
simulcast._setLocalVideoStreamEnabled(ssrc, false);
|
||||
});
|
||||
|
||||
|
||||
var simulcast = new SimulcastManager();
|
||||
|
||||
module.exports = simulcast;
|
||||
Loading…
Reference in New Issue