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main.js
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main.js
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const testStreams = require('../tests/test-streams');
const defaultTestStreamUrl = testStreams['bbb'].url;
let bufferingIdx = -1;
let selectedTestStream = null;
let lastSeekingIdx,
lastStartPosition,
lastDuration,
lastAudioTrackSwitchingIdx;
let hls,
url,
events,
stats,
tracks,
fmp4Data,
enableStreaming = JSON.parse(getURLParam('enableStreaming', true));
autoRecoverError = JSON.parse(getURLParam('autoRecoverError', true)),
enableWorker = JSON.parse(getURLParam('enableWorker', true)),
levelCapping = JSON.parse(getURLParam('levelCapping', -1)),
defaultAudioCodec = getURLParam('defaultAudioCodec', undefined),
widevineLicenseUrl = getURLParam('widevineLicenseURL', undefined),
dumpfMP4 = getURLParam('dumpfMP4', false);
let video = $('#video')[0];
video.volume = 0.05;
$(document).ready(function() {
//console.log(testStreams)
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());
$('#buffered_c').width($('#videoSize').val());
});
$('#PlaybackControl').hide();
$('#QualityLevelControl').hide();
$('#AudioTrackControl').hide();
$('#MetricsDisplay').hide();
$('#StatsDisplay').hide();
$('#metricsButtonWindow').toggle(windowSliding);
$('#metricsButtonFixed').toggle(!windowSliding);
$('#enableStreaming').click(function() {
enableStreaming = this.checked;
loadSelectedStream();
});
$('#autoRecoverError').click(function() {
autoRecoverError = this.checked;
updatePermalink();
});
$('#enableWorker').click(function() {
enableWorker = this.checked;
updatePermalink();
});
$('#dumpfMP4').click(function() {
dumpfMP4 = this.checked;
updatePermalink();
});
$('#levelCapping').change(function() {
levelCapping = this.value;
updatePermalink();
});
$('#defaultAudioCodec').change(function() {
defaultAudioCodec = this.value;
updatePermalink();
});
$('#enableStreaming').prop( 'checked', enableStreaming );
$('#autoRecoverError').prop( 'checked', autoRecoverError );
$('#enableWorker').prop( 'checked', enableWorker );
$('#dumpfMP4').prop( 'checked', dumpfMP4 );
$('#levelCapping').val(levelCapping);
$('#defaultAudioCodec').val(defaultAudioCodec || 'undefined');
$('h2').append(' <a target=_blank href=https://github.com/video-dev/hls.js/releases/tag/v' + Hls.version + '>v' + Hls.version + '</a>');
$('#currentVersion').html('Hls version:' + Hls.version);
$('#streamURL').val(decodeURIComponent(getURLParam('src', defaultTestStreamUrl)))
loadSelectedStream();
});
function resetGlobals() {
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.updatePermalink = updatePermalink;
}
function loadSelectedStream() {
url = $('#streamURL').val()
hideCanvas();
if(Hls.isSupported()) {
if(hls) {
hls.destroy();
if(hls.bufferTimer) {
clearInterval(hls.bufferTimer);
hls.bufferTimer = undefined;
}
hls = null;
}
if(!enableStreaming) {
$('#HlsStatus').text('Streaming disabled');
return;
}
$('#HlsStatus').text('loading ' + url);
resetGlobals();
if (widevineLicenseUrl) {
widevineLicenseUrl = unescape(widevineLicenseUrl)
}
const hlsConfig = {
debug : true,
enableWorker : enableWorker,
defaultAudioCodec: defaultAudioCodec,
widevineLicenseUrl: widevineLicenseUrl
};
if (selectedTestStream && selectedTestStream.config) {
Object.assign(hlsConfig, selectedTestStream.config)
console.log('Using Hls.js config:', hlsConfig);
}
if (hlsConfig.widevineLicenseUrl) {
$('#widevineLicenseUrl').val(hlsConfig.widevineLicenseUrl);
}
widevineLicenseUrl = hlsConfig.widevineLicenseUrl = $('#widevineLicenseUrl').val();
if (hlsConfig.widevineLicenseUrl) {
hlsConfig.emeEnabled = true;
}
updatePermalink();
window.hls = hls = new Hls(hlsConfig);
$('#HlsStatus').text('loading manifest and attaching video element...');
hls.loadSource(url);
hls.autoLevelCapping = levelCapping;
hls.attachMedia(video);
hls.on(Hls.Events.MEDIA_ATTACHED, function() {
$('#HlsStatus').text('MediaSource attached...');
bufferingIdx = -1;
events.video.push({
time: performance.now() - events.t0,
type: 'Media attached'
});
});
hls.on(Hls.Events.MEDIA_DETACHED, function() {
$('#HlsStatus').text('MediaSource detached...');
bufferingIdx = -1;
tracks = [];
events.video.push({
time: performance.now() - events.t0,
type: 'Media detached'
});
});
hls.on(Hls.Events.FRAG_PARSING_INIT_SEGMENT, function(event, data) {
showCanvas();
var event = {
time: performance.now() - events.t0,
type: data.id + ' init segment'
};
events.video.push(event);
});
hls.on(Hls.Events.FRAG_PARSING_METADATA, function(event, data) {
//console.log("Id3 samples ", data.samples);
});
hls.on(Hls.Events.LEVEL_SWITCHING, function(event, data) {
events.level.push({
time : performance.now() - events.t0,
id : data.level,
bitrate: Math.round(hls.levels[data.level].bitrate/1000)
});
updateLevelInfo();
});
hls.on(Hls.Events.MANIFEST_PARSED, function(event, data) {
var event = {
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,
};
events.load.push(event);
refreshCanvas();
});
hls.on(Hls.Events.MANIFEST_PARSED, function(event, data) {
$('#HlsStatus').text('manifest successfully loaded,' + hls.levels.length + ' levels found');
stats = {
levelNb : data.levels.length,
levelParsed: 0
};
updateLevelInfo();
});
hls.on(Hls.Events.AUDIO_TRACKS_UPDATED, function(event, data) {
$('#HlsStatus').text(data.audioTracks.length + ' audio tracks found');
updateAudioTrackInfo();
});
hls.on(Hls.Events.AUDIO_TRACK_SWITCHING, function(event, data) {
updateAudioTrackInfo();
var event = {
time: performance.now() - events.t0,
type: 'audio switching',
name: '@' + data.id
};
events.video.push(event);
lastAudioTrackSwitchingIdx = events.video.length-1;
});
hls.on(Hls.Events.AUDIO_TRACK_SWITCHED, function(event, data) {
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);
});
hls.on(Hls.Events.LEVEL_LOADED, function(event, 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);
refreshCanvas();
});
hls.on(Hls.Events.AUDIO_TRACK_LOADED, function(event, 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);
refreshCanvas();
});
hls.on(Hls.Events.FRAG_BUFFERED, function(event, 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);
}
refreshCanvas();
updateLevelInfo();
let latency = data.stats.tfirst - data.stats.trequest,
parsing = data.stats.tparsed - data.stats.tload,
process = data.stats.tbuffered - data.stats.trequest,
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(event, data) {
var event = {
time: performance.now() - events.t0,
type: 'level switched',
name: data.level
};
events.video.push(event);
refreshCanvas();
updateLevelInfo();
});
hls.on(Hls.Events.FRAG_CHANGED, function(event, data) {
var event = {
time: performance.now() - events.t0,
type: 'frag changed',
name: data.frag.sn + ' @ ' + data.frag.level
};
events.video.push(event);
refreshCanvas();
updateLevelInfo();
stats.tagList = data.frag.tagList;
let level = data.frag.level, 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(event, data) {
if (stats) {
if (stats.fragLoadEmergencyAborted === undefined)
{stats.fragLoadEmergencyAborted = 1;}
else
{stats.fragLoadEmergencyAborted++;}
}
});
hls.on(Hls.Events.FRAG_DECRYPTED, function(event, 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(event, data) {
console.warn(data);
switch(data.details) {
case Hls.ErrorDetails.MANIFEST_LOAD_ERROR:
try {
$('#HlsStatus').html('cannot Load <a href="' + data.context.url + '">' + url + '</a><br>HTTP response code:' + data.response.code + ' <br>' + data.response.text);
if(data.response.code === 0)
{$('#HlsStatus').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) {
$('#HlsStatus').html('cannot Load <a href="' + data.context.url + '">' + url + '</a><br>Reason:Load ' + data.response.text);
}
break;
case Hls.ErrorDetails.MANIFEST_LOAD_TIMEOUT:
$('#HlsStatus').text('timeout while loading manifest');
break;
case Hls.ErrorDetails.MANIFEST_PARSING_ERROR:
$('#HlsStatus').text('error while parsing manifest:' + data.reason);
break;
case Hls.ErrorDetails.LEVEL_LOAD_ERROR:
$('#HlsStatus').text('error while loading level playlist');
break;
case Hls.ErrorDetails.LEVEL_LOAD_TIMEOUT:
$('#HlsStatus').text('timeout while loading level playlist');
break;
case Hls.ErrorDetails.LEVEL_SWITCH_ERROR:
$('#HlsStatus').text('error while trying to switch to level ' + data.level);
break;
case Hls.ErrorDetails.FRAG_LOAD_ERROR:
$('#HlsStatus').text('error while loading fragment ' + data.frag.url);
break;
case Hls.ErrorDetails.FRAG_LOAD_TIMEOUT:
$('#HlsStatus').text('timeout while loading fragment ' + data.frag.url);
break;
case Hls.ErrorDetails.FRAG_LOOP_LOADING_ERROR:
$('#HlsStatus').text('Frag Loop Loading Error');
break;
case Hls.ErrorDetails.FRAG_DECRYPT_ERROR:
$('#HlsStatus').text('Decrypting Error:' + data.reason);
break;
case Hls.ErrorDetails.FRAG_PARSING_ERROR:
$('#HlsStatus').text('Parsing Error:' + data.reason);
break;
case Hls.ErrorDetails.KEY_LOAD_ERROR:
$('#HlsStatus').text('error while loading key ' + data.frag.decryptdata.uri);
break;
case Hls.ErrorDetails.KEY_LOAD_TIMEOUT:
$('#HlsStatus').text('timeout while loading key ' + data.frag.decryptdata.uri);
break;
case Hls.ErrorDetails.BUFFER_APPEND_ERROR:
$('#HlsStatus').text('Buffer Append Error');
break;
case Hls.ErrorDetails.BUFFER_ADD_CODEC_ERROR:
$('#HlsStatus').text('Buffer Add Codec Error for ' + data.mimeType + ':' + data.err.message);
break;
case Hls.ErrorDetails.BUFFER_APPENDING_ERROR:
$('#HlsStatus').text('Buffer Appending Error');
break;
default:
break;
}
if(data.fatal) {
console.log('fatal error :' + data.details);
switch(data.type) {
case Hls.ErrorTypes.MEDIA_ERROR:
handleMediaError();
break;
case Hls.ErrorTypes.NETWORK_ERROR:
$('#HlsStatus').append(',network error ...');
break;
default:
$('#HlsStatus').append(', unrecoverable error');
hls.destroy();
break;
}
console.log($('#HlsStatus').text());
}
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;}
}
$('#HlsStats').text(JSON.stringify(sortObject(stats), null, '\t'));
});
hls.on(Hls.Events.BUFFER_CREATED, function(event, data) {
tracks = data.tracks;
});
hls.on(Hls.Events.BUFFER_APPENDING, function(event, data) {
if (dumpfMP4)
{fmp4Data[data.type].push(data.data);}
});
hls.on(Hls.Events.FPS_DROP, function(event, data) {
let evt = {
time: performance.now() - events.t0,
type: 'frame drop',
name: data.currentDropped + '/' + data.currentDecoded
};
events.video.push(evt);
if (stats) {
if (stats.fpsDropEvent === undefined)
{stats.fpsDropEvent = 1;}
else
{stats.fpsDropEvent++;}
stats.fpsTotalDroppedFrames = data.totalDroppedFrames;
}
});
video.addEventListener('resize', handleVideoEvent);
video.addEventListener('seeking', handleVideoEvent);
video.addEventListener('seeked', handleVideoEvent);
video.addEventListener('pause', handleVideoEvent);
video.addEventListener('play', handleVideoEvent);
video.addEventListener('canplay', handleVideoEvent);
video.addEventListener('canplaythrough', handleVideoEvent);
video.addEventListener('ended', handleVideoEvent);
video.addEventListener('playing', handleVideoEvent);
video.addEventListener('error', handleVideoEvent);
video.addEventListener('loadedmetadata', handleVideoEvent);
video.addEventListener('loadeddata', handleVideoEvent);
video.addEventListener('durationchange', handleVideoEvent);
} else {
if(navigator.userAgent.toLowerCase().indexOf('firefox') !== -1)
{$('#HlsStatus').text('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
{$('#HlsStatus').text('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 reports 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':
// data = 'duration:' + evt.target.duration + '/videoWidth:' + evt.target.videoWidth + '/videoHeight:' + evt.target.videoHeight;
// break;
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, 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;}
$('#HlsStatus').text(errorTxt);
console.error(errorTxt);
}
break;
// case 'progress':
// data = 'currentTime:' + evt.target.currentTime + ',bufferRange:[' + this.video.buffered.start(0) + ',' + this.video.buffered.end(0) + ']';
// 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;}
}
function handleMediaError() {
if(autoRecoverError) {
let now = performance.now();
if(!recoverDecodingErrorDate || (now - recoverDecodingErrorDate) > 3000) {
recoverDecodingErrorDate = performance.now();
$('#HlsStatus').append(',try to recover media Error ...');
hls.recoverMediaError();
} else {
if(!recoverSwapAudioCodecDate || (now - recoverSwapAudioCodecDate) > 3000) {
recoverSwapAudioCodecDate = performance.now();
$('#HlsStatus').append(',try to swap Audio Codec and recover media Error ...');
hls.swapAudioCodec();
hls.recoverMediaError();
} else {
$('#HlsStatus').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) + ']';}
return log;
}
function checkBuffer() {
let v = $('#video')[0];
let canvas = $('#buffered_c')[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;}
var pos = v.currentTime, bufferLen;
for (var i=0, bufferLen=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
});
// 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, bufEventLen = bufEvents.length;
if(bufEventLen > 1) {
let event0 = bufEvents[bufEventLen-2], 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);
refreshCanvas();
let log = 'Duration:'
+ v.duration + '<br>'
+ 'Buffered:'
+ timeRangesToString(v.buffered) + '<br>'
+ 'Seekable:'
+ timeRangesToString(v.seekable) + '<br>'
+ 'Played:'
+ timeRangesToString(v.played) + '<br>';
if (hls.media) {
for(let type in tracks)
{log += type + ' Buffered:' + timeRangesToString(tracks[type].buffer.buffered) + '<br>';}
let videoPlaybackQuality = v.getVideoPlaybackQuality;
if(videoPlaybackQuality && typeof (videoPlaybackQuality) === typeof (Function)) {
log+='Dropped Frames:'+ v.getVideoPlaybackQuality().droppedVideoFrames + '<br>';
log+='Corrupted Frames:'+ v.getVideoPlaybackQuality().corruptedVideoFrames + '<br>';
} else if(v.webkitDroppedFrameCount) {
log+='Dropped Frames:'+ v.webkitDroppedFrameCount + '<br>';
}
}
$('#buffered_log').html(log);
$('#HlsStats').text(JSON.stringify(sortObject(stats), null, '\t'));
ctx.fillStyle = 'blue';
let x = v.currentTime / v.duration * canvas.width;
ctx.fillRect(x, 0, 2, 15);
}
}
function sortObject(obj) {
if(typeof obj !== 'object')
{return obj;}
let temp = {
};
let keys = [];
for(let key in obj)
{keys.push(key);}
keys.sort();
for(let index in keys)
{temp[keys[index]] = sortObject(obj[keys[index]]);}
return temp;
}
function showCanvas() {
showMetrics();
$('#buffered_log').show();
$('#buffered_c').show();
}
function hideCanvas() {
hideMetrics();
$('#buffered_log').hide();
$('#buffered_c').hide();
}
function getMetrics() {
let json = JSON.stringify(events);
let jsonpacked = jsonpack.pack(json);
console.log('packing JSON from ' + json.length + ' to ' + jsonpacked.length + ' bytes');
return btoa(jsonpacked);
}
function copyMetricsToClipBoard() {
copyTextToClipboard(getMetrics());
}
function copyTextToClipboard(text) {
let textArea = document.createElement('textarea');
textArea.value = text;
document.body.appendChild(textArea);
textArea.select();
try {
let successful = document.execCommand('copy');
let msg = successful ? 'successful' : 'unsuccessful';
console.log('Copying text command was ' + msg);
} catch (err) {
console.log('Oops, unable to copy');
}
document.body.removeChild(textArea);
}
function goToMetrics() {
let url = document.URL;
url = url.substr(0, url.lastIndexOf('/')+1) + 'metrics.html';
console.log(url);
window.open(url, '_blank');
}
function goToMetricsPermaLink() {
let url = document.URL;
let b64 = getMetrics();
url = url.substr(0, url.lastIndexOf('/')+1) + 'metrics.html#data=' + b64;
console.log(url);
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 = $('#buffered_c')[0];
let v = $('#video')[0];
let target = (event.clientX - canvas.offsetLeft) / canvas.width * v.duration;
v.currentTime = target;
}
function updateLevelInfo() {
if (!hls.levels) {
return;
}
let button_template = '<button type="button" class="btn btn-sm ';
let button_enabled = 'btn-primary" ';
let button_disabled = 'btn-success" ';
let html1 = button_template;
if(hls.autoLevelEnabled) {
html1 += button_enabled;
} else {
html1 += button_disabled;
}
html1 += 'onclick="hls.currentLevel=-1">auto</button>';
let html2 = button_template;
if(hls.autoLevelEnabled) {
html2 += button_enabled;
} else {
html2 += button_disabled;
}
html2 += 'onclick="hls.loadLevel=-1">auto</button>';
let html3 = button_template;
if(hls.autoLevelCapping === -1) {
html3 += button_enabled;
} else {
html3 += button_disabled;
}
html3 += 'onclick="levelCapping=hls.autoLevelCapping=-1;updateLevelInfo();updatePermalink();">auto</button>';
let html4 = button_template;
if(hls.autoLevelEnabled) {
html4 += button_enabled;
} else {
html4 += button_disabled;
}
html4 += 'onclick="hls.nextLevel=-1">auto</button>';
for (let i=0; i < hls.levels.length; i++) {
html1 += button_template;
if(hls.currentLevel === i) {
html1 += button_enabled;
} else {
html1 += button_disabled;
}
let levelName = i, label = level2label(i);
if(label) {
levelName += '(' + level2label(i) + ')';
}
html1 += 'onclick="hls.currentLevel=' + i + '">' + levelName + '</button>';
html2 += button_template;
if(hls.loadLevel === i) {
html2 += button_enabled;
} else {
html2 += button_disabled;
}
html2 += 'onclick="hls.loadLevel=' + i + '">' + levelName + '</button>';
html3 += button_template;