/
main.js
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/
main.js
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/* global $, Hls, __NETLIFY__ */
/* eslint camelcase: 0 */
import { sortObject, copyTextToClipboard } from './demo-utils';
import { TimelineChart } from './chart/timeline-chart';
const NETLIFY = __NETLIFY__; // replaced in build
const STORAGE_KEYS = {
Editor_Persistence: 'hlsjs:config-editor-persist',
Hls_Config: 'hlsjs:config'
};
const testStreams = require('../tests/test-streams');
const defaultTestStreamUrl = testStreams[Object.keys(testStreams)[0]].url;
const sourceURL = decodeURIComponent(getURLParam('src', defaultTestStreamUrl));
let demoConfig = getURLParam('demoConfig', null);
if (demoConfig) {
demoConfig = JSON.parse(atob(demoConfig));
} else {
demoConfig = {};
}
const hlsjsDefaults = {
debug: true,
enableWorker: true,
liveBackBufferLength: 60 * 15
};
let enableStreaming = getDemoConfigPropOrDefault('enableStreaming', true);
let autoRecoverError = getDemoConfigPropOrDefault('autoRecoverError', true);
let levelCapping = getDemoConfigPropOrDefault('levelCapping', -1);
let limitMetrics = getDemoConfigPropOrDefault('limitMetrics', -1);
let dumpfMP4 = getDemoConfigPropOrDefault('dumpfMP4', false);
let bufferingIdx = -1;
let selectedTestStream = null;
let video = $('#video')[0];
let startTime = Date.now();
let lastSeekingIdx;
let lastStartPosition;
let lastDuration;
let lastAudioTrackSwitchingIdx;
let hls;
let url;
let events;
let stats;
let tracks;
let fmp4Data;
let configPersistenceEnabled = false;
let configEditor = null;
let chart;
$(document).ready(function () {
setupConfigEditor();
chart = setupTimelineChart();
Object.keys(testStreams).forEach((key) => {
const stream = testStreams[key];
const option = new Option(stream.description, key);
$('#streamSelect').append(option);
});
$('#streamSelect').change(function () {
selectedTestStream = testStreams[$('#streamSelect').val()];
const streamUrl = selectedTestStream.url;
$('#streamURL').val(streamUrl);
loadSelectedStream();
});
$('#streamURL').change(function () {
selectedTestStream = null;
loadSelectedStream();
});
$('#videoSize').change(function () {
$('#video').width($('#videoSize').val());
$('#bufferedCanvas').width($('#videoSize').val());
});
$('#enableStreaming').click(function () {
enableStreaming = this.checked;
loadSelectedStream();
});
$('#autoRecoverError').click(function () {
autoRecoverError = this.checked;
onDemoConfigChanged();
});
$('#dumpfMP4').click(function () {
dumpfMP4 = this.checked;
onDemoConfigChanged();
});
$('#limitMetrics').change(function () {
limitMetrics = this.value;
onDemoConfigChanged();
});
$('#levelCapping').change(function () {
levelCapping = this.value;
onDemoConfigChanged();
});
$('#limitMetrics').val(limitMetrics);
$('#enableStreaming').prop('checked', enableStreaming);
$('#autoRecoverError').prop('checked', autoRecoverError);
$('#dumpfMP4').prop('checked', dumpfMP4);
$('#levelCapping').val(levelCapping);
// link to version on npm if canary
// github branch for a branch version
// github tag for a normal tag
// github PR for a pr
function getVersionLink (version) {
const alphaRegex = /[-.]0\.alpha\./;
if (alphaRegex.test(version)) {
return `https://www.npmjs.com/package/hls.js/v/${encodeURIComponent(version)}`;
} else if (NETLIFY.reviewID) {
return `https://github.com/video-dev/hls.js/pull/${NETLIFY.reviewID}`;
} else if (NETLIFY.branch) {
return `https://github.com/video-dev/hls.js/tree/${encodeURIComponent(NETLIFY.branch)}`;
}
return `https://github.com/video-dev/hls.js/releases/tag/v${encodeURIComponent(version)}`;
}
const version = Hls.version;
if (version) {
const $a = $('<a />').attr('target', '_blank').attr('href', getVersionLink(version)).text('v' + version);
$('.title').append($a);
}
$('#streamURL').val(sourceURL);
video.volume = 0.05;
hideAllTabs();
// $('#timelineTab').show();
$('#metricsButtonWindow').toggle(window.windowSliding);
$('#metricsButtonFixed').toggle(!window.windowSliding);
loadSelectedStream();
});
function setupGlobals () {
window.events = events = {
url: url,
t0: performance.now(),
load: [],
buffer: [],
video: [],
level: [],
bitrate: []
};
// actual values, only on window
window.recoverDecodingErrorDate = null;
window.recoverSwapAudioCodecDate = null;
window.fmp4Data = fmp4Data = {
'audio': [],
'video': []
};
window.onClickBufferedRange = onClickBufferedRange;
window.updateLevelInfo = updateLevelInfo;
window.onDemoConfigChanged = onDemoConfigChanged;
window.createfMP4 = createfMP4;
window.goToMetricsPermaLink = goToMetricsPermaLink;
window.toggleTab = toggleTab;
window.applyConfigEditorValue = applyConfigEditorValue;
}
function trimArray (target, limit) {
if (limit < 0) {
return;
}
while (target.length > limit) {
target.shift();
}
}
function trimEventHistory () {
const x = limitMetrics;
if (x < 0) {
return;
}
trimArray(events.load, x);
trimArray(events.buffer, x);
trimArray(events.video, x);
trimArray(events.level, x);
trimArray(events.bitrate, x);
}
function loadSelectedStream () {
if (!Hls.isSupported()) {
handleUnsupported();
return;
}
url = $('#streamURL').val();
setupGlobals();
hideCanvas();
if (hls) {
hls.destroy();
if (hls.bufferTimer) {
clearInterval(hls.bufferTimer);
hls.bufferTimer = undefined;
}
hls = null;
}
if (!enableStreaming) {
logStatus('Streaming disabled');
return;
}
logStatus('Loading ' + url);
// Extending both a demo-specific config and the user config which can override all
const hlsConfig = $.extend({}, hlsjsDefaults, getEditorValue({ parse: true }));
if (selectedTestStream && selectedTestStream.config) {
console.info('[loadSelectedStream] extending hls config with stream-specific config: ', selectedTestStream.config);
$.extend(hlsConfig, selectedTestStream.config);
updateConfigEditorValue(hlsConfig);
}
onDemoConfigChanged();
console.log('Using Hls.js config:', hlsConfig);
window.hls = hls = new Hls(hlsConfig);
logStatus('Loading manifest and attaching video element...');
addChartEventListeners(hls);
hls.loadSource(url);
hls.autoLevelCapping = levelCapping;
hls.attachMedia(video);
hls.on(Hls.Events.MEDIA_ATTACHED, function () {
logStatus('Media element attached');
bufferingIdx = -1;
events.video.push({
time: performance.now() - events.t0,
type: 'Media attached'
});
trimEventHistory();
});
hls.on(Hls.Events.MEDIA_DETACHED, function () {
logStatus('Media element detached');
bufferingIdx = -1;
tracks = [];
events.video.push({
time: performance.now() - events.t0,
type: 'Media detached'
});
trimEventHistory();
});
hls.on(Hls.Events.FRAG_PARSING_INIT_SEGMENT, function (name, data) {
showCanvas();
events.video.push({
time: performance.now() - events.t0,
type: data.id + ' init segment'
});
trimEventHistory();
});
hls.on(Hls.Events.FRAG_PARSING_METADATA, function (name, data) {
// console.log("Id3 samples ", data.samples);
});
hls.on(Hls.Events.LEVEL_SWITCHING, function (name, data) {
events.level.push({
time: performance.now() - events.t0,
id: data.level,
bitrate: Math.round(hls.levels[data.level].bitrate / 1000)
});
trimEventHistory();
updateLevelInfo();
});
hls.on(Hls.Events.MANIFEST_PARSED, function (name, data) {
events.load.push({
type: 'manifest',
name: '',
start: 0,
end: data.levels.length,
time: data.stats.trequest - events.t0,
latency: data.stats.tfirst - data.stats.trequest,
load: data.stats.tload - data.stats.tfirst,
duration: data.stats.tload - data.stats.tfirst
});
trimEventHistory();
window.refreshCanvas();
});
hls.on(Hls.Events.MANIFEST_PARSED, function (name, data) {
logStatus('No of quality levels found: ' + hls.levels.length);
logStatus('Manifest successfully loaded');
stats = {
levelNb: data.levels.length,
levelParsed: 0
};
trimEventHistory();
updateLevelInfo();
});
hls.on(Hls.Events.AUDIO_TRACKS_UPDATED, function (name, data) {
logStatus('No of audio tracks found: ' + data.audioTracks.length);
updateAudioTrackInfo();
});
hls.on(Hls.Events.AUDIO_TRACK_SWITCHING, function (name, data) {
logStatus('Audio track switching...');
updateAudioTrackInfo();
events.video.push({
time: performance.now() - events.t0,
type: 'audio switching',
name: '@' + data.id
});
trimEventHistory();
lastAudioTrackSwitchingIdx = events.video.length - 1;
});
hls.on(Hls.Events.AUDIO_TRACK_SWITCHED, function (name, data) {
logStatus('Audio track switched');
updateAudioTrackInfo();
var event = {
time: performance.now() - events.t0,
type: 'audio switched',
name: '@' + data.id
};
if (lastAudioTrackSwitchingIdx !== undefined) {
events.video[lastAudioTrackSwitchingIdx].duration = event.time - events.video[lastAudioTrackSwitchingIdx].time;
lastAudioTrackSwitchingIdx = undefined;
}
events.video.push(event);
trimEventHistory();
});
hls.on(Hls.Events.LEVEL_LOADED, function (name, data) {
events.isLive = data.details.live;
var event = {
type: 'level',
id: data.level,
start: data.details.startSN,
end: data.details.endSN,
time: data.stats.trequest - events.t0,
latency: data.stats.tfirst - data.stats.trequest,
load: data.stats.tload - data.stats.tfirst,
parsing: data.stats.tparsed - data.stats.tload,
duration: data.stats.tload - data.stats.tfirst
};
const parsingDuration = data.stats.tparsed - data.stats.tload;
if (stats.levelParsed) {
this.sumLevelParsingMs += parsingDuration;
} else {
this.sumLevelParsingMs = parsingDuration;
}
stats.levelParsed++;
stats.levelParsingUs = Math.round(1000 * this.sumLevelParsingMs / stats.levelParsed);
// console.log('parsing level duration :' + stats.levelParsingUs + 'us,count:' + stats.levelParsed);
events.load.push(event);
trimEventHistory();
window.refreshCanvas();
});
hls.on(Hls.Events.AUDIO_TRACK_LOADED, function (name, data) {
events.isLive = data.details.live;
var event = {
type: 'audio track',
id: data.id,
start: data.details.startSN,
end: data.details.endSN,
time: data.stats.trequest - events.t0,
latency: data.stats.tfirst - data.stats.trequest,
load: data.stats.tload - data.stats.tfirst,
parsing: data.stats.tparsed - data.stats.tload,
duration: data.stats.tload - data.stats.tfirst
};
events.load.push(event);
trimEventHistory();
window.refreshCanvas();
});
hls.on(Hls.Events.FRAG_BUFFERED, function (name, data) {
var event = {
type: data.frag.type + ' fragment',
id: data.frag.level,
id2: data.frag.sn,
time: data.stats.trequest - events.t0,
latency: data.stats.tfirst - data.stats.trequest,
load: data.stats.tload - data.stats.tfirst,
parsing: data.stats.tparsed - data.stats.tload,
buffer: data.stats.tbuffered - data.stats.tparsed,
duration: data.stats.tbuffered - data.stats.tfirst,
bw: Math.round(8 * data.stats.total / (data.stats.tbuffered - data.stats.trequest)),
size: data.stats.total
};
events.load.push(event);
events.bitrate.push({
time: performance.now() - events.t0,
bitrate: event.bw,
duration: data.frag.duration,
level: event.id
});
if (hls.bufferTimer === undefined) {
events.buffer.push({
time: 0,
buffer: 0,
pos: 0
});
hls.bufferTimer = window.setInterval(checkBuffer, 100);
}
trimEventHistory();
window.refreshCanvas();
updateLevelInfo();
let latency = data.stats.tfirst - data.stats.trequest;
let parsing = data.stats.tparsed - data.stats.tload;
let process = data.stats.tbuffered - data.stats.trequest;
let bitrate = Math.round(8 * data.stats.length / (data.stats.tbuffered - data.stats.tfirst));
if (stats.fragBuffered) {
stats.fragMinLatency = Math.min(stats.fragMinLatency, latency);
stats.fragMaxLatency = Math.max(stats.fragMaxLatency, latency);
stats.fragMinProcess = Math.min(stats.fragMinProcess, process);
stats.fragMaxProcess = Math.max(stats.fragMaxProcess, process);
stats.fragMinKbps = Math.min(stats.fragMinKbps, bitrate);
stats.fragMaxKbps = Math.max(stats.fragMaxKbps, bitrate);
stats.autoLevelCappingMin = Math.min(stats.autoLevelCappingMin, hls.autoLevelCapping);
stats.autoLevelCappingMax = Math.max(stats.autoLevelCappingMax, hls.autoLevelCapping);
stats.fragBuffered++;
} else {
stats.fragMinLatency = stats.fragMaxLatency = latency;
stats.fragMinProcess = stats.fragMaxProcess = process;
stats.fragMinKbps = stats.fragMaxKbps = bitrate;
stats.fragBuffered = 1;
stats.fragBufferedBytes = 0;
stats.autoLevelCappingMin = stats.autoLevelCappingMax = hls.autoLevelCapping;
this.sumLatency = 0;
this.sumKbps = 0;
this.sumProcess = 0;
this.sumParsing = 0;
}
stats.fraglastLatency = latency;
this.sumLatency += latency;
stats.fragAvgLatency = Math.round(this.sumLatency / stats.fragBuffered);
stats.fragLastProcess = process;
this.sumProcess += process;
this.sumParsing += parsing;
stats.fragAvgProcess = Math.round(this.sumProcess / stats.fragBuffered);
stats.fragLastKbps = bitrate;
this.sumKbps += bitrate;
stats.fragAvgKbps = Math.round(this.sumKbps / stats.fragBuffered);
stats.fragBufferedBytes += data.stats.total;
stats.fragparsingKbps = Math.round(8 * stats.fragBufferedBytes / this.sumParsing);
stats.fragparsingMs = Math.round(this.sumParsing);
stats.autoLevelCappingLast = hls.autoLevelCapping;
});
hls.on(Hls.Events.LEVEL_SWITCHED, function (name, data) {
var event = {
time: performance.now() - events.t0,
type: 'level switched',
name: data.level
};
events.video.push(event);
trimEventHistory();
window.refreshCanvas();
updateLevelInfo();
});
hls.on(Hls.Events.FRAG_CHANGED, function (name, data) {
var event = {
time: performance.now() - events.t0,
type: 'frag changed',
name: data.frag.sn + ' @ ' + data.frag.level
};
events.video.push(event);
trimEventHistory();
window.refreshCanvas();
updateLevelInfo();
stats.tagList = data.frag.tagList;
let level = data.frag.level; let autoLevel = data.frag.autoLevel;
if (stats.levelStart === undefined) {
stats.levelStart = level;
}
if (autoLevel) {
if (stats.fragChangedAuto) {
stats.autoLevelMin = Math.min(stats.autoLevelMin, level);
stats.autoLevelMax = Math.max(stats.autoLevelMax, level);
stats.fragChangedAuto++;
if (this.levelLastAuto && level !== stats.autoLevelLast) {
stats.autoLevelSwitch++;
}
} else {
stats.autoLevelMin = stats.autoLevelMax = level;
stats.autoLevelSwitch = 0;
stats.fragChangedAuto = 1;
this.sumAutoLevel = 0;
}
this.sumAutoLevel += level;
stats.autoLevelAvg = Math.round(1000 * this.sumAutoLevel / stats.fragChangedAuto) / 1000;
stats.autoLevelLast = level;
} else {
if (stats.fragChangedManual) {
stats.manualLevelMin = Math.min(stats.manualLevelMin, level);
stats.manualLevelMax = Math.max(stats.manualLevelMax, level);
stats.fragChangedManual++;
if (!this.levelLastAuto && level !== stats.manualLevelLast) {
stats.manualLevelSwitch++;
}
} else {
stats.manualLevelMin = stats.manualLevelMax = level;
stats.manualLevelSwitch = 0;
stats.fragChangedManual = 1;
}
stats.manualLevelLast = level;
}
this.levelLastAuto = autoLevel;
});
hls.on(Hls.Events.FRAG_LOAD_EMERGENCY_ABORTED, function (name, data) {
if (stats) {
if (stats.fragLoadEmergencyAborted === undefined) {
stats.fragLoadEmergencyAborted = 1;
} else {
stats.fragLoadEmergencyAborted++;
}
}
});
hls.on(Hls.Events.FRAG_DECRYPTED, function (name, data) {
if (!stats.fragDecrypted) {
stats.fragDecrypted = 0;
this.totalDecryptTime = 0;
stats.fragAvgDecryptTime = 0;
}
stats.fragDecrypted++;
this.totalDecryptTime += data.stats.tdecrypt - data.stats.tstart;
stats.fragAvgDecryptTime = this.totalDecryptTime / stats.fragDecrypted;
});
hls.on(Hls.Events.ERROR, function (name, data) {
console.warn('Error event:', data);
switch (data.details) {
case Hls.ErrorDetails.MANIFEST_LOAD_ERROR:
try {
$('#errorOut').html('Cannot load <a href="' + data.context.url + '">' + url + '</a><br>HTTP response code:' + data.response.code + ' <br>' + data.response.text);
if (data.response.code === 0) {
$('#errorOut').append('This might be a CORS issue, consider installing <a href="https://chrome.google.com/webstore/detail/allow-control-allow-origi/nlfbmbojpeacfghkpbjhddihlkkiljbi">Allow-Control-Allow-Origin</a> Chrome Extension');
}
} catch (err) {
$('#errorOut').html('Cannot load <a href="' + data.context.url + '">' + url + '</a><br>Response body: ' + data.response.text);
}
break;
case Hls.ErrorDetails.MANIFEST_LOAD_TIMEOUT:
logError('Timeout while loading manifest');
break;
case Hls.ErrorDetails.MANIFEST_PARSING_ERROR:
logError('Error while parsing manifest:' + data.reason);
break;
case Hls.ErrorDetails.LEVEL_EMPTY_ERROR:
logError('Loaded level contains no fragments ' + data.level + ' ' + data.url);
handleLevelError(data);
break;
case Hls.ErrorDetails.LEVEL_LOAD_ERROR:
logError('Error while loading level playlist ' + data.context.level + ' ' + data.url);
handleLevelError(data);
break;
case Hls.ErrorDetails.LEVEL_LOAD_TIMEOUT:
logError('Timeout while loading level playlist ' + data.context.level + ' ' + data.url);
handleLevelError(data);
break;
case Hls.ErrorDetails.LEVEL_SWITCH_ERROR:
logError('Error while trying to switch to level ' + data.level);
break;
case Hls.ErrorDetails.FRAG_LOAD_ERROR:
logError('Error while loading fragment ' + data.frag.url);
break;
case Hls.ErrorDetails.FRAG_LOAD_TIMEOUT:
logError('Timeout while loading fragment ' + data.frag.url);
break;
case Hls.ErrorDetails.FRAG_LOOP_LOADING_ERROR:
logError('Fragment-loop loading error');
break;
case Hls.ErrorDetails.FRAG_DECRYPT_ERROR:
logError('Decrypting error:' + data.reason);
break;
case Hls.ErrorDetails.FRAG_PARSING_ERROR:
logError('Parsing error:' + data.reason);
break;
case Hls.ErrorDetails.KEY_LOAD_ERROR:
logError('Error while loading key ' + data.frag.decryptdata.uri);
break;
case Hls.ErrorDetails.KEY_LOAD_TIMEOUT:
logError('Timeout while loading key ' + data.frag.decryptdata.uri);
break;
case Hls.ErrorDetails.BUFFER_APPEND_ERROR:
logError('Buffer append error');
break;
case Hls.ErrorDetails.BUFFER_ADD_CODEC_ERROR:
logError('Buffer add codec error for ' + data.mimeType + ':' + data.err.message);
break;
case Hls.ErrorDetails.BUFFER_APPENDING_ERROR:
logError('Buffer appending error');
break;
case Hls.ErrorDetails.BUFFER_STALLED_ERROR:
logError('Buffer stalled error');
break;
default:
break;
}
if (data.fatal) {
console.error('Fatal error :' + data.details);
switch (data.type) {
case Hls.ErrorTypes.MEDIA_ERROR:
handleMediaError();
break;
case Hls.ErrorTypes.NETWORK_ERROR:
logError('A network error occurred');
break;
default:
logError('An unrecoverable error occurred');
hls.destroy();
break;
}
}
if (!stats) {
stats = {};
}
// track all errors independently
if (stats[data.details] === undefined) {
stats[data.details] = 1;
} else {
stats[data.details] += 1;
}
// track fatal error
if (data.fatal) {
if (stats.fatalError === undefined) {
stats.fatalError = 1;
} else {
stats.fatalError += 1;
}
}
$('#statisticsOut').text(JSON.stringify(sortObject(stats), null, '\t'));
});
hls.on(Hls.Events.BUFFER_CREATED, function (name, data) {
tracks = data.tracks;
});
hls.on(Hls.Events.BUFFER_APPENDING, function (name, data) {
if (dumpfMP4) {
fmp4Data[data.type].push(data.data);
}
});
hls.on(Hls.Events.FPS_DROP, function (name, data) {
let evt = {
time: performance.now() - events.t0,
type: 'frame drop',
name: data.currentDropped + '/' + data.currentDecoded
};
events.video.push(evt);
trimEventHistory();
if (stats) {
if (stats.fpsDropEvent === undefined) {
stats.fpsDropEvent = 1;
} else {
stats.fpsDropEvent++;
}
stats.fpsTotalDroppedFrames = data.totalDroppedFrames;
}
});
video.addEventListener('resize', handleVideoEvent);
video.addEventListener('seeking', handleVideoEvent);
video.addEventListener('seeked', handleVideoEvent);
video.addEventListener('pause', handleVideoEvent);
video.addEventListener('play', handleVideoEvent);
video.addEventListener('canplay', handleVideoEvent);
video.addEventListener('canplaythrough', handleVideoEvent);
video.addEventListener('ended', handleVideoEvent);
video.addEventListener('playing', handleVideoEvent);
video.addEventListener('error', handleVideoEvent);
video.addEventListener('loadedmetadata', handleVideoEvent);
video.addEventListener('loadeddata', handleVideoEvent);
video.addEventListener('durationchange', handleVideoEvent);
}
function handleUnsupported () {
if (navigator.userAgent.toLowerCase().indexOf('firefox') !== -1) {
logStatus('You are using Firefox, it looks like MediaSource is not enabled,<br>please ensure the following keys are set appropriately in <b>about:config</b><br>media.mediasource.enabled=true<br>media.mediasource.mp4.enabled=true<br><b>media.mediasource.whitelist=false</b>');
} else {
logStatus('Your Browser does not support MediaSourceExtension / MP4 mediasource');
}
}
function handleVideoEvent (evt) {
let data = '';
switch (evt.type) {
case 'durationchange':
if (evt.target.duration - lastDuration <= 0.5) {
// some browsers report several duration change events with almost the same value ... avoid spamming video events
return;
}
lastDuration = evt.target.duration;
data = Math.round(evt.target.duration * 1000);
break;
case 'resize':
data = evt.target.videoWidth + '/' + evt.target.videoHeight;
break;
case 'loadedmetadata':
case 'loadeddata':
case 'canplay':
case 'canplaythrough':
case 'ended':
case 'seeking':
case 'seeked':
case 'play':
case 'playing':
lastStartPosition = evt.target.currentTime;
case 'pause':
case 'waiting':
case 'stalled':
case 'error':
data = Math.round(evt.target.currentTime * 1000);
if (evt.type === 'error') {
let errorTxt; let mediaError = evt.currentTarget.error;
switch (mediaError.code) {
case mediaError.MEDIA_ERR_ABORTED:
errorTxt = 'You aborted the video playback';
break;
case mediaError.MEDIA_ERR_DECODE:
errorTxt = 'The video playback was aborted due to a corruption problem or because the video used features your browser did not support';
handleMediaError();
break;
case mediaError.MEDIA_ERR_NETWORK:
errorTxt = 'A network error caused the video download to fail part-way';
break;
case mediaError.MEDIA_ERR_SRC_NOT_SUPPORTED:
errorTxt = 'The video could not be loaded, either because the server or network failed or because the format is not supported';
break;
}
if (mediaError.message) {
errorTxt += ' - ' + mediaError.message;
}
logStatus(errorTxt);
console.error(errorTxt);
}
break;
default:
break;
}
let event = {
time: performance.now() - events.t0,
type: evt.type,
name: data
};
events.video.push(event);
if (evt.type === 'seeking') {
lastSeekingIdx = events.video.length - 1;
}
if (evt.type === 'seeked') {
events.video[lastSeekingIdx].duration = event.time - events.video[lastSeekingIdx].time;
}
trimEventHistory();
}
function handleLevelError (data) {
var levelObj = data.context || data;
hls.removeLevel(levelObj.level, levelObj.urlId || 0);
if (!hls.levels.length) {
logError('All levels have been removed');
hls.destroy();
return;
}
// Trigger an immediate downswitch to the first level
// This is to handle the case where we start at an empty level, where switching to auto causes hlsjs to stall
hls.currentLevel = 0;
// Set the quality back to auto so that we return to optimal quality
hls.currentLevel = -1;
}
function handleMediaError () {
if (autoRecoverError) {
let now = performance.now();
if (!window.recoverDecodingErrorDate || (now - window.recoverDecodingErrorDate) > 3000) {
window.recoverDecodingErrorDate = performance.now();
$('#statusOut').append(', trying to recover media error.');
hls.recoverMediaError();
} else {
if (!window.recoverSwapAudioCodecDate || (now - window.recoverSwapAudioCodecDate) > 3000) {
window.recoverSwapAudioCodecDate = performance.now();
$('#statusOut').append(', trying to swap audio codec and recover media error.');
hls.swapAudioCodec();
hls.recoverMediaError();
} else {
$('#statusOut').append(', cannot recover. Last media error recovery failed.');
}
}
}
}
function timeRangesToString (r) {
let log = '';
for (let i = 0; i < r.length; i++) {
log += '[' + r.start(i) + ', ' + r.end(i) + ']';
log += ' ';
}
return log;
}
function checkBuffer () {
let v = $('#video')[0];
let canvas = $('#bufferedCanvas')[0];
let ctx = canvas.getContext('2d');
let r = v.buffered;
let bufferingDuration;
ctx.fillStyle = 'black';
ctx.fillRect(0, 0, canvas.width, canvas.height);
ctx.fillStyle = 'gray';
if (r) {
if (!canvas.width || canvas.width !== v.clientWidth) {
canvas.width = v.clientWidth;
}
let pos = v.currentTime;
let bufferLen = 0;
for (let i = 0; i < r.length; i++) {
let start = r.start(i) / v.duration * canvas.width;
let end = r.end(i) / v.duration * canvas.width;
ctx.fillRect(start, 3, Math.max(2, end - start), 10);
if (pos >= r.start(i) && pos < r.end(i)) {
// play position is inside this buffer TimeRange, retrieve end of buffer position and buffer length
bufferLen = r.end(i) - pos;
}
}
// check if we are in buffering / or playback ended state
if (bufferLen <= 0.1 && v.paused === false && (pos - lastStartPosition) > 0.5) {
// don't create buffering event if we are at the end of the playlist, don't report ended for live playlist
if (lastDuration - pos <= 0.5 && events.isLive === false) {
} else {
// we are not at the end of the playlist ... real buffering
if (bufferingIdx !== -1) {
bufferingDuration = performance.now() - events.t0 - events.video[bufferingIdx].time;
events.video[bufferingIdx].duration = bufferingDuration;
events.video[bufferingIdx].name = bufferingDuration;
} else {
events.video.push({
type: 'buffering',
time: performance.now() - events.t0
});
trimEventHistory();
// we are in buffering state
bufferingIdx = events.video.length - 1;
}
}
}
if (bufferLen > 0.1 && bufferingIdx !== -1) {
bufferingDuration = performance.now() - events.t0 - events.video[bufferingIdx].time;
events.video[bufferingIdx].duration = bufferingDuration;
events.video[bufferingIdx].name = bufferingDuration;
// we are out of buffering state
bufferingIdx = -1;
}
// update buffer/position for current Time
let event = {
time: performance.now() - events.t0,
buffer: Math.round(bufferLen * 1000),
pos: Math.round(pos * 1000)
};
let bufEvents = events.buffer; let bufEventLen = bufEvents.length;
if (bufEventLen > 1) {
let event0 = bufEvents[bufEventLen - 2]; let event1 = bufEvents[bufEventLen - 1];
let slopeBuf0 = (event0.buffer - event1.buffer) / (event0.time - event1.time);
let slopeBuf1 = (event1.buffer - event.buffer) / (event1.time - event.time);
let slopePos0 = (event0.pos - event1.pos) / (event0.time - event1.time);
let slopePos1 = (event1.pos - event.pos) / (event1.time - event.time);
// compute slopes. if less than 30% difference, remove event1
if ((slopeBuf0 === slopeBuf1 || Math.abs(slopeBuf0 / slopeBuf1 - 1) <= 0.3) &&
(slopePos0 === slopePos1 || Math.abs(slopePos0 / slopePos1 - 1) <= 0.3)) {
bufEvents.pop();
}
}
events.buffer.push(event);
trimEventHistory();
window.refreshCanvas();
let log = 'Duration: ' +
v.duration + '\n' +
'Buffered: ' +
timeRangesToString(v.buffered) + '\n' +
'Seekable: ' +
timeRangesToString(v.seekable) + '\n' +
'Played: ' +
timeRangesToString(v.played) + '\n';
if (hls.media) {
for (let type in tracks) {
log += 'Buffer for ' + type + ' contains: ' + timeRangesToString(tracks[type].buffer.buffered) + '\n';
}
const videoPlaybackQuality = v.getVideoPlaybackQuality;
if (videoPlaybackQuality && typeof (videoPlaybackQuality) === typeof (Function)) {
log += 'Dropped frames: ' + v.getVideoPlaybackQuality().droppedVideoFrames + '\n';
log += 'Corrupted frames:' + v.getVideoPlaybackQuality().corruptedVideoFrames + '\n';
} else if (v.webkitDroppedFrameCount) {
log += 'Dropped frames:' + v.webkitDroppedFrameCount + '\n';
}
}
$('#bufferedOut').text(log);
$('#statisticsOut').text(JSON.stringify(sortObject(stats), null, '\t'));
ctx.fillStyle = 'blue';
const x = v.currentTime / v.duration * canvas.width;
ctx.fillRect(x, 0, 2, 15);
}
}
function showCanvas () {
window.showMetrics();
$('#bufferedOut').show();
$('#bufferedCanvas').show();
}
function hideCanvas () {
window.hideMetrics();
$('#bufferedOut').hide();
$('#bufferedCanvas').hide();
}
function getMetrics () {
let json = JSON.stringify(events);
let jsonpacked = window.jsonpack.pack(json);
// console.log('packing JSON from ' + json.length + ' to ' + jsonpacked.length + ' bytes');
return btoa(jsonpacked);
}
function copyMetricsToClipBoard () {
copyTextToClipboard(getMetrics());
}
function goToMetrics () {
let url = document.URL;
url = url.substr(0, url.lastIndexOf('/') + 1) + 'metrics.html';
window.open(url, '_blank');
}
function goToMetricsPermaLink () {
let url = document.URL;
let b64 = getMetrics();
url = url.substr(0, url.lastIndexOf('/') + 1) + 'metrics.html#data=' + b64;
window.open(url, '_blank');
}
function minsecs (ts) {
let m = Math.floor(Math.floor(ts % 3600) / 60);
let s = Math.floor(ts % 60);
return m + ':' + (s < 10 ? '0' : '') + s;
}
function onClickBufferedRange (event) {
let canvas = $('#bufferedCanvas')[0];
let v = $('#video')[0];
let target = (event.clientX - canvas.offsetLeft) / canvas.width * v.duration;