719 lines
22 KiB
JavaScript
719 lines
22 KiB
JavaScript
/* global require, ssrc2jid */
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/* jshint -W117 */
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var RTCBrowserType = require("../RTC/RTCBrowserType");
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/* Whether we support the browser we are running into for logging statistics */
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var browserSupported = RTCBrowserType.isChrome() ||
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RTCBrowserType.isOpera() || RTCBrowserType.isFirefox();
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/**
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* Calculates packet lost percent using the number of lost packets and the
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* number of all packet.
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* @param lostPackets the number of lost packets
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* @param totalPackets the number of all packets.
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* @returns {number} packet loss percent
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*/
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function calculatePacketLoss(lostPackets, totalPackets) {
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if(!totalPackets || totalPackets <= 0 || !lostPackets || lostPackets <= 0)
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return 0;
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return Math.round((lostPackets/totalPackets)*100);
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}
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function getStatValue(item, name) {
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var browserType = RTCBrowserType.getBrowserType();
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if (!keyMap[browserType][name])
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throw "The property isn't supported!";
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var key = keyMap[browserType][name];
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return (RTCBrowserType.isChrome() || RTCBrowserType.isOpera()) ?
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item.stat(key) : item[key];
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}
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/**
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* Peer statistics data holder.
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* @constructor
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*/
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function PeerStats()
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{
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this.ssrc2Loss = {};
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this.ssrc2AudioLevel = {};
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this.ssrc2bitrate = {};
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this.ssrc2resolution = {};
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}
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/**
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* The bandwidth
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* @type {{}}
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*/
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PeerStats.bandwidth = {};
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/**
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* The bit rate
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* @type {{}}
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*/
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PeerStats.bitrate = {};
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/**
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* The packet loss rate
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* @type {{}}
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*/
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PeerStats.packetLoss = null;
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/**
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* Sets packets loss rate for given <tt>ssrc</tt> that blong to the peer
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* represented by this instance.
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* @param ssrc audio or video RTP stream SSRC.
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* @param lossRate new packet loss rate value to be set.
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*/
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PeerStats.prototype.setSsrcLoss = function (ssrc, lossRate)
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{
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this.ssrc2Loss[ssrc] = lossRate;
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};
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/**
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* Sets resolution for given <tt>ssrc</tt> that belong to the peer
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* represented by this instance.
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* @param ssrc audio or video RTP stream SSRC.
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* @param resolution new resolution value to be set.
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*/
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PeerStats.prototype.setSsrcResolution = function (ssrc, resolution)
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{
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if(resolution === null && this.ssrc2resolution[ssrc])
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{
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delete this.ssrc2resolution[ssrc];
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}
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else if(resolution !== null)
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this.ssrc2resolution[ssrc] = resolution;
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};
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/**
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* Sets the bit rate for given <tt>ssrc</tt> that blong to the peer
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* represented by this instance.
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* @param ssrc audio or video RTP stream SSRC.
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* @param bitrate new bitrate value to be set.
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*/
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PeerStats.prototype.setSsrcBitrate = function (ssrc, bitrate)
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{
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if(this.ssrc2bitrate[ssrc])
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{
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this.ssrc2bitrate[ssrc].download += bitrate.download;
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this.ssrc2bitrate[ssrc].upload += bitrate.upload;
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}
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else {
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this.ssrc2bitrate[ssrc] = bitrate;
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}
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};
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/**
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* Sets new audio level(input or output) for given <tt>ssrc</tt> that identifies
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* the stream which belongs to the peer represented by this instance.
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* @param ssrc RTP stream SSRC for which current audio level value will be
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* updated.
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* @param audioLevel the new audio level value to be set. Value is truncated to
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* fit the range from 0 to 1.
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*/
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PeerStats.prototype.setSsrcAudioLevel = function (ssrc, audioLevel)
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{
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// Range limit 0 - 1
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this.ssrc2AudioLevel[ssrc] = formatAudioLevel(audioLevel);
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};
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function formatAudioLevel(audioLevel) {
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return Math.min(Math.max(audioLevel, 0), 1);
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}
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/**
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* Array with the transport information.
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* @type {Array}
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*/
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PeerStats.transport = [];
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/**
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* <tt>StatsCollector</tt> registers for stats updates of given
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* <tt>peerconnection</tt> in given <tt>interval</tt>. On each update particular
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* stats are extracted and put in {@link PeerStats} objects. Once the processing
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* is done <tt>audioLevelsUpdateCallback</tt> is called with <tt>this</tt>
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* instance as an event source.
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*
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* @param peerconnection webRTC peer connection object.
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* @param interval stats refresh interval given in ms.
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* @param {function(StatsCollector)} audioLevelsUpdateCallback the callback
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* called on stats update.
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* @constructor
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*/
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function StatsCollector(peerconnection, audioLevelsInterval, statsInterval, eventEmitter)
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{
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this.peerconnection = peerconnection;
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this.baselineAudioLevelsReport = null;
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this.currentAudioLevelsReport = null;
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this.currentStatsReport = null;
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this.baselineStatsReport = null;
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this.audioLevelsIntervalId = null;
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this.eventEmitter = eventEmitter;
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/**
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* Gather PeerConnection stats once every this many milliseconds.
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*/
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this.GATHER_INTERVAL = 15000;
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/**
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* Log stats via the focus once every this many milliseconds.
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*/
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this.LOG_INTERVAL = 60000;
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/**
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* Gather stats and store them in this.statsToBeLogged.
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*/
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this.gatherStatsIntervalId = null;
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/**
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* Send the stats already saved in this.statsToBeLogged to be logged via
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* the focus.
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*/
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this.logStatsIntervalId = null;
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/**
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* Stores the statistics which will be send to the focus to be logged.
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*/
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this.statsToBeLogged =
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{
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timestamps: [],
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stats: {}
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};
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// Updates stats interval
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this.audioLevelsIntervalMilis = audioLevelsInterval;
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this.statsIntervalId = null;
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this.statsIntervalMilis = statsInterval;
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// Map of jids to PeerStats
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this.jid2stats = {};
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}
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module.exports = StatsCollector;
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/**
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* Stops stats updates.
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*/
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StatsCollector.prototype.stop = function () {
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if (this.audioLevelsIntervalId) {
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clearInterval(this.audioLevelsIntervalId);
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this.audioLevelsIntervalId = null;
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}
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if (this.statsIntervalId)
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{
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clearInterval(this.statsIntervalId);
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this.statsIntervalId = null;
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}
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if(this.logStatsIntervalId)
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{
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clearInterval(this.logStatsIntervalId);
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this.logStatsIntervalId = null;
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}
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if(this.gatherStatsIntervalId)
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{
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clearInterval(this.gatherStatsIntervalId);
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this.gatherStatsIntervalId = null;
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}
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};
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/**
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* Callback passed to <tt>getStats</tt> method.
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* @param error an error that occurred on <tt>getStats</tt> call.
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*/
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StatsCollector.prototype.errorCallback = function (error)
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{
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console.error("Get stats error", error);
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this.stop();
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};
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/**
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* Starts stats updates.
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*/
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StatsCollector.prototype.start = function ()
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{
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var self = this;
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if (!config.disableAudioLevels) {
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this.audioLevelsIntervalId = setInterval(
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function () {
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// Interval updates
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self.peerconnection.getStats(
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function (report) {
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var results = null;
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if (!report || !report.result ||
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typeof report.result != 'function') {
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results = report;
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}
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else {
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results = report.result();
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}
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//console.error("Got interval report", results);
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self.currentAudioLevelsReport = results;
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self.processAudioLevelReport();
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self.baselineAudioLevelsReport =
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self.currentAudioLevelsReport;
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},
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self.errorCallback
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);
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},
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self.audioLevelsIntervalMilis
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);
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}
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if (!config.disableStats && browserSupported) {
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this.statsIntervalId = setInterval(
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function () {
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// Interval updates
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self.peerconnection.getStats(
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function (report) {
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var results = null;
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if (!report || !report.result ||
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typeof report.result != 'function') {
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//firefox
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results = report;
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}
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else {
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//chrome
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results = report.result();
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}
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//console.error("Got interval report", results);
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self.currentStatsReport = results;
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try {
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self.processStatsReport();
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}
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catch (e) {
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console.error("Unsupported key:" + e, e);
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}
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self.baselineStatsReport = self.currentStatsReport;
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},
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self.errorCallback
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);
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},
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self.statsIntervalMilis
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);
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}
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// Logging statistics does not support firefox
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if (config.logStats && (browserSupported && !RTCBrowserType.isFirefox())) {
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this.gatherStatsIntervalId = setInterval(
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function () {
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self.peerconnection.getStats(
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function (report) {
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self.addStatsToBeLogged(report.result());
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},
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function () {
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}
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);
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},
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this.GATHER_INTERVAL
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);
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this.logStatsIntervalId = setInterval(
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function() { self.logStats(); },
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this.LOG_INTERVAL);
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}
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};
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/**
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* Checks whether a certain record should be included in the logged statistics.
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*/
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function acceptStat(reportId, reportType, statName) {
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if (reportType == "googCandidatePair" && statName == "googChannelId")
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return false;
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if (reportType == "ssrc") {
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if (statName == "googTrackId" ||
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statName == "transportId" ||
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statName == "ssrc")
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return false;
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}
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return true;
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}
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/**
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* Checks whether a certain record should be included in the logged statistics.
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*/
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function acceptReport(id, type) {
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if (id.substring(0, 15) == "googCertificate" ||
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id.substring(0, 9) == "googTrack" ||
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id.substring(0, 20) == "googLibjingleSession")
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return false;
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if (type == "googComponent")
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return false;
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return true;
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}
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/**
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* Converts the stats to the format used for logging, and saves the data in
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* this.statsToBeLogged.
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* @param reports Reports as given by webkitRTCPerConnection.getStats.
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*/
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StatsCollector.prototype.addStatsToBeLogged = function (reports) {
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var self = this;
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var num_records = this.statsToBeLogged.timestamps.length;
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this.statsToBeLogged.timestamps.push(new Date().getTime());
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reports.map(function (report) {
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if (!acceptReport(report.id, report.type))
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return;
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var stat = self.statsToBeLogged.stats[report.id];
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if (!stat) {
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stat = self.statsToBeLogged.stats[report.id] = {};
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}
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stat.type = report.type;
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report.names().map(function (name) {
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if (!acceptStat(report.id, report.type, name))
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return;
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var values = stat[name];
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if (!values) {
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values = stat[name] = [];
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}
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while (values.length < num_records) {
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values.push(null);
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}
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values.push(report.stat(name));
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});
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});
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};
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StatsCollector.prototype.logStats = function () {
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if(!APP.xmpp.sendLogs(this.statsToBeLogged))
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return;
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// Reset the stats
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this.statsToBeLogged.stats = {};
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this.statsToBeLogged.timestamps = [];
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};
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var keyMap = {};
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keyMap[RTCBrowserType.RTC_BROWSER_FIREFOX] = {
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"ssrc": "ssrc",
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"packetsReceived": "packetsReceived",
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"packetsLost": "packetsLost",
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"packetsSent": "packetsSent",
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"bytesReceived": "bytesReceived",
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"bytesSent": "bytesSent"
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};
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keyMap[RTCBrowserType.RTC_BROWSER_CHROME] = {
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"receiveBandwidth": "googAvailableReceiveBandwidth",
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"sendBandwidth": "googAvailableSendBandwidth",
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"remoteAddress": "googRemoteAddress",
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"transportType": "googTransportType",
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"localAddress": "googLocalAddress",
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"activeConnection": "googActiveConnection",
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"ssrc": "ssrc",
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"packetsReceived": "packetsReceived",
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"packetsSent": "packetsSent",
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"packetsLost": "packetsLost",
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"bytesReceived": "bytesReceived",
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"bytesSent": "bytesSent",
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"googFrameHeightReceived": "googFrameHeightReceived",
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"googFrameWidthReceived": "googFrameWidthReceived",
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"googFrameHeightSent": "googFrameHeightSent",
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"googFrameWidthSent": "googFrameWidthSent",
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"audioInputLevel": "audioInputLevel",
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"audioOutputLevel": "audioOutputLevel"
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};
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keyMap[RTCBrowserType.RTC_BROWSER_OPERA] =
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keyMap[RTCBrowserType.RTC_BROWSER_CHROME];
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/**
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* Stats processing logic.
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*/
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StatsCollector.prototype.processStatsReport = function () {
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if (!this.baselineStatsReport) {
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return;
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}
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for (var idx in this.currentStatsReport) {
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var now = this.currentStatsReport[idx];
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try {
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if (getStatValue(now, 'receiveBandwidth') ||
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getStatValue(now, 'sendBandwidth')) {
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PeerStats.bandwidth = {
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"download": Math.round(
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(getStatValue(now, 'receiveBandwidth')) / 1000),
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"upload": Math.round(
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(getStatValue(now, 'sendBandwidth')) / 1000)
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};
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}
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}
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catch(e){/*not supported*/}
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if(now.type == 'googCandidatePair')
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{
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var ip, type, localIP, active;
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try {
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ip = getStatValue(now, 'remoteAddress');
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type = getStatValue(now, "transportType");
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localIP = getStatValue(now, "localAddress");
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active = getStatValue(now, "activeConnection");
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}
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catch(e){/*not supported*/}
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if(!ip || !type || !localIP || active != "true")
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continue;
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var addressSaved = false;
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for(var i = 0; i < PeerStats.transport.length; i++)
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{
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if(PeerStats.transport[i].ip == ip &&
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PeerStats.transport[i].type == type &&
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PeerStats.transport[i].localip == localIP)
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{
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addressSaved = true;
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}
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}
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if(addressSaved)
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continue;
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PeerStats.transport.push({localip: localIP, ip: ip, type: type});
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continue;
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}
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if(now.type == "candidatepair")
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{
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if(now.state == "succeeded")
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continue;
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var local = this.currentStatsReport[now.localCandidateId];
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var remote = this.currentStatsReport[now.remoteCandidateId];
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PeerStats.transport.push({localip: local.ipAddress + ":" + local.portNumber,
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ip: remote.ipAddress + ":" + remote.portNumber, type: local.transport});
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}
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if (now.type != 'ssrc' && now.type != "outboundrtp" &&
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now.type != "inboundrtp") {
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continue;
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}
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var before = this.baselineStatsReport[idx];
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if (!before) {
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console.warn(getStatValue(now, 'ssrc') + ' not enough data');
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continue;
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}
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var ssrc = getStatValue(now, 'ssrc');
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if(!ssrc)
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continue;
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var jid = APP.xmpp.getJidFromSSRC(ssrc);
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if (!jid && (Date.now() - now.timestamp) < 3000) {
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console.warn("No jid for ssrc: " + ssrc);
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continue;
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}
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|
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var jidStats = this.jid2stats[jid];
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if (!jidStats) {
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jidStats = new PeerStats();
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this.jid2stats[jid] = jidStats;
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}
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|
|
|
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var isDownloadStream = true;
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var key = 'packetsReceived';
|
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var packetsNow = getStatValue(now, key);
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if (typeof packetsNow === 'undefined' || packetsNow === null) {
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isDownloadStream = false;
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key = 'packetsSent';
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packetsNow = getStatValue(now, key);
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if (typeof packetsNow === 'undefined' || packetsNow === null) {
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console.warn("No packetsReceived nor packetsSent stat found");
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continue;
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}
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}
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if (!packetsNow || packetsNow < 0)
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packetsNow = 0;
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var packetsBefore = getStatValue(before, key);
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if (!packetsBefore || packetsBefore < 0)
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packetsBefore = 0;
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var packetRate = packetsNow - packetsBefore;
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if (!packetRate || packetRate < 0)
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packetRate = 0;
|
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var currentLoss = getStatValue(now, 'packetsLost');
|
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if (!currentLoss || currentLoss < 0)
|
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currentLoss = 0;
|
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var previousLoss = getStatValue(before, 'packetsLost');
|
|
if (!previousLoss || previousLoss < 0)
|
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previousLoss = 0;
|
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var lossRate = currentLoss - previousLoss;
|
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if (!lossRate || lossRate < 0)
|
|
lossRate = 0;
|
|
var packetsTotal = (packetRate + lossRate);
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|
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jidStats.setSsrcLoss(ssrc,
|
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{"packetsTotal": packetsTotal,
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"packetsLost": lossRate,
|
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"isDownloadStream": isDownloadStream});
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var bytesReceived = 0, bytesSent = 0;
|
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if(getStatValue(now, "bytesReceived")) {
|
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bytesReceived = getStatValue(now, "bytesReceived") -
|
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getStatValue(before, "bytesReceived");
|
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}
|
|
|
|
if(getStatValue(now, "bytesSent")) {
|
|
bytesSent = getStatValue(now, "bytesSent") -
|
|
getStatValue(before, "bytesSent");
|
|
}
|
|
|
|
var time = Math.round((now.timestamp - before.timestamp) / 1000);
|
|
if(bytesReceived <= 0 || time <= 0) {
|
|
bytesReceived = 0;
|
|
} else {
|
|
bytesReceived = Math.round(((bytesReceived * 8) / time) / 1000);
|
|
}
|
|
|
|
if(bytesSent <= 0 || time <= 0) {
|
|
bytesSent = 0;
|
|
} else {
|
|
bytesSent = Math.round(((bytesSent * 8) / time) / 1000);
|
|
}
|
|
|
|
jidStats.setSsrcBitrate(ssrc, {
|
|
"download": bytesReceived,
|
|
"upload": bytesSent});
|
|
|
|
var resolution = {height: null, width: null};
|
|
try {
|
|
if (getStatValue(now, "googFrameHeightReceived") &&
|
|
getStatValue(now, "googFrameWidthReceived")) {
|
|
resolution.height = getStatValue(now, "googFrameHeightReceived");
|
|
resolution.width = getStatValue(now, "googFrameWidthReceived");
|
|
}
|
|
else if (getStatValue(now, "googFrameHeightSent") &&
|
|
getStatValue(now, "googFrameWidthSent")) {
|
|
resolution.height = getStatValue(now, "googFrameHeightSent");
|
|
resolution.width = getStatValue(now, "googFrameWidthSent");
|
|
}
|
|
}
|
|
catch(e){/*not supported*/}
|
|
|
|
if(resolution.height && resolution.width) {
|
|
jidStats.setSsrcResolution(ssrc, resolution);
|
|
} else {
|
|
jidStats.setSsrcResolution(ssrc, null);
|
|
}
|
|
}
|
|
|
|
var self = this;
|
|
// Jid stats
|
|
var totalPackets = {download: 0, upload: 0};
|
|
var lostPackets = {download: 0, upload: 0};
|
|
var bitrateDownload = 0;
|
|
var bitrateUpload = 0;
|
|
var resolutions = {};
|
|
Object.keys(this.jid2stats).forEach(
|
|
function (jid) {
|
|
Object.keys(self.jid2stats[jid].ssrc2Loss).forEach(
|
|
function (ssrc) {
|
|
var type = "upload";
|
|
if(self.jid2stats[jid].ssrc2Loss[ssrc].isDownloadStream)
|
|
type = "download";
|
|
totalPackets[type] +=
|
|
self.jid2stats[jid].ssrc2Loss[ssrc].packetsTotal;
|
|
lostPackets[type] +=
|
|
self.jid2stats[jid].ssrc2Loss[ssrc].packetsLost;
|
|
}
|
|
);
|
|
Object.keys(self.jid2stats[jid].ssrc2bitrate).forEach(
|
|
function (ssrc) {
|
|
bitrateDownload +=
|
|
self.jid2stats[jid].ssrc2bitrate[ssrc].download;
|
|
bitrateUpload +=
|
|
self.jid2stats[jid].ssrc2bitrate[ssrc].upload;
|
|
|
|
delete self.jid2stats[jid].ssrc2bitrate[ssrc];
|
|
}
|
|
);
|
|
resolutions[jid] = self.jid2stats[jid].ssrc2resolution;
|
|
}
|
|
);
|
|
|
|
PeerStats.bitrate = {"upload": bitrateUpload, "download": bitrateDownload};
|
|
|
|
PeerStats.packetLoss = {
|
|
total:
|
|
calculatePacketLoss(lostPackets.download + lostPackets.upload,
|
|
totalPackets.download + totalPackets.upload),
|
|
download:
|
|
calculatePacketLoss(lostPackets.download, totalPackets.download),
|
|
upload:
|
|
calculatePacketLoss(lostPackets.upload, totalPackets.upload)
|
|
};
|
|
this.eventEmitter.emit("statistics.connectionstats",
|
|
{
|
|
"bitrate": PeerStats.bitrate,
|
|
"packetLoss": PeerStats.packetLoss,
|
|
"bandwidth": PeerStats.bandwidth,
|
|
"resolution": resolutions,
|
|
"transport": PeerStats.transport
|
|
});
|
|
PeerStats.transport = [];
|
|
|
|
};
|
|
|
|
/**
|
|
* Stats processing logic.
|
|
*/
|
|
StatsCollector.prototype.processAudioLevelReport = function () {
|
|
if (!this.baselineAudioLevelsReport) {
|
|
return;
|
|
}
|
|
|
|
for (var idx in this.currentAudioLevelsReport) {
|
|
var now = this.currentAudioLevelsReport[idx];
|
|
|
|
if (now.type != 'ssrc') {
|
|
continue;
|
|
}
|
|
|
|
var before = this.baselineAudioLevelsReport[idx];
|
|
if (!before) {
|
|
console.warn(getStatValue(now, 'ssrc') + ' not enough data');
|
|
continue;
|
|
}
|
|
|
|
var ssrc = getStatValue(now, 'ssrc');
|
|
var jid = APP.xmpp.getJidFromSSRC(ssrc);
|
|
if (!jid) {
|
|
if((Date.now() - now.timestamp) < 3000)
|
|
console.warn("No jid for ssrc: " + ssrc);
|
|
continue;
|
|
}
|
|
|
|
var jidStats = this.jid2stats[jid];
|
|
if (!jidStats) {
|
|
jidStats = new PeerStats();
|
|
this.jid2stats[jid] = jidStats;
|
|
}
|
|
|
|
// Audio level
|
|
var audioLevel = null;
|
|
|
|
try {
|
|
audioLevel = getStatValue(now, 'audioInputLevel');
|
|
if (!audioLevel)
|
|
audioLevel = getStatValue(now, 'audioOutputLevel');
|
|
}
|
|
catch(e) {/*not supported*/
|
|
console.warn("Audio Levels are not available in the statistics.");
|
|
clearInterval(this.audioLevelsIntervalId);
|
|
return;
|
|
}
|
|
|
|
if (audioLevel) {
|
|
// TODO: can't find specs about what this value really is,
|
|
// but it seems to vary between 0 and around 32k.
|
|
audioLevel = audioLevel / 32767;
|
|
jidStats.setSsrcAudioLevel(ssrc, audioLevel);
|
|
if(jid != APP.xmpp.myJid())
|
|
this.eventEmitter.emit("statistics.audioLevel", jid, audioLevel);
|
|
}
|
|
}
|
|
};
|