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flowplayer.hlsjs.js
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/*jslint browser: true, for: true, node: true */
/*eslint indent: ["error", 4], no-empty: ["error", { "allowEmptyCatch": true }] */
/*eslint-disable quotes, no-console */
/*global window */
/*!
hlsjs engine plugin for Flowplayer HTML5
Copyright (c) 2015-2017, Flowplayer Drive Oy
Released under the MIT License:
http://www.opensource.org/licenses/mit-license.php
Includes hls.js
Copyright (c) 2017 Dailymotion (http://www.dailymotion.com)
https://github.com/video-dev/hls.js/blob/master/LICENSE
Requires Flowplayer HTML5 version 6 or greater
$GIT_DESC$
*/
(function () {
"use strict";
var extension = function (Hls, flowplayer) {
var engineName = "hlsjs",
hlsconf,
common = flowplayer.common,
extend = flowplayer.extend,
support = flowplayer.support,
brwsr = support.browser,
version = flowplayer.version,
coreV6 = version.indexOf("6.") === 0,
win = window,
mse = win.MediaSource || win.WebKitMediaSource,
performance = win.performance,
isHlsType = function (typ) {
return typ.toLowerCase().indexOf("mpegurl") > -1;
},
hlsQualitiesSupport = function (conf) {
var hlsQualities = (conf.clip && conf.clip.hlsQualities) || conf.hlsQualities;
return support.inlineVideo &&
(hlsQualities === true ||
(hlsQualities && hlsQualities.length));
},
destroyVideoTag = function (root) {
var vtag = common.findDirect("video", root)[0]
|| common.find(".fp-player>video", root)[0];
if (vtag) {
common.find("source", vtag).forEach(function (source) {
source.removeAttribute("src");
});
vtag.removeAttribute("src");
vtag.load();
common.removeNode(vtag);
}
},
textencoding = require("text-encoding"),
Decoder = new textencoding.TextDecoder("utf-8"),
uint8ArrayToString = function (arr) {
var txt = "";
try {
txt = Decoder.decode(arr);
} catch (ignore) {
try {
Decoder = new textencoding.TextDecoder("utf-16be");
txt = Decoder.decode(arr);
} catch (ignore) {
try {
Decoder = new textencoding.TextDecoder("utf-16le");
txt = Decoder.decode(arr);
} catch (ignore) {}
}
}
return txt;
},
loadHlsSubtitle = function (api, entry, num) {
entry.title = entry.title || num + "";
var cue = {
time: entry.startTime,
subtitle: entry,
visible: false
};
api.subtitles.push(entry);
api.addCuepoint(cue);
api.addCuepoint({
time: entry.endTime,
subtitleEnd: entry.title,
visible: false
});
// initial cuepoint
if (entry.startTime === 0 && !api.video.time && !api.splash) {
api.trigger("cuepoint", [api, cue]);
}
if (api.splash) {
api.one("ready." + engineName, function () {
api.trigger('cuepoint', [api, cue]);
});
}
},
engineImpl = function hlsjsEngine(player, root) {
var bean = flowplayer.bean,
videoTag,
hls,
recover, // DEPRECATED
recoverMediaErrorDate,
swapAudioCodecDate,
recoveryClass = "is-seeking",
posterClass = "is-poster",
doRecover = function (conf, etype, isNetworkError) {
if (conf.debug) {
console.log("recovery." + engineName, "<-", etype);
}
common.removeClass(root, "is-paused");
common.addClass(root, recoveryClass);
if (isNetworkError) {
hls.startLoad();
} else {
var now = performance.now();
if (!recoverMediaErrorDate || now - recoverMediaErrorDate > 3000) {
recoverMediaErrorDate = performance.now();
hls.recoverMediaError();
} else if (!swapAudioCodecDate || (now - swapAudioCodecDate) > 3000) {
swapAudioCodecDate = performance.now();
hls.swapAudioCodec();
hls.recoverMediaError();
}
}
// DEPRECATED
if (recover > 0) {
recover -= 1;
}
bean.one(videoTag, "seeked." + engineName, function () {
if (videoTag.paused) {
common.removeClass(root, posterClass);
player.poster = false;
videoTag.play();
}
common.removeClass(root, recoveryClass);
});
},
handleError = function (errorCode, src, url) {
var errobj = {code: errorCode};
if (errorCode > 2) {
errobj.video = extend(player.video, {
src: src,
url: url || src
});
}
return errobj;
},
// pre 6.0.4 poster detection
bc,
has_bg,
addPoster = function () {
bean.one(videoTag, "timeupdate." + engineName, function () {
common.addClass(root, posterClass);
player.poster = true;
});
},
removePoster = function () {
if (coreV6 && player.poster) {
bean.one(videoTag, "timeupdate." + engineName, function () {
common.removeClass(root, posterClass);
player.poster = false;
});
}
},
maxLevel = 0,
audioGroups,
audioUXGroup,
audioAutoSwitch = function (level) {
if (audioGroups && audioGroups.length > 1) {
var audioTracks = hls.audioTracks,
tracks = audioTracks.filter(function (atrack) {
var attrs = hls.levels[level].attrs;
return atrack.autoselect && attrs &&
atrack.groupId === attrs.AUDIO &&
atrack.name === audioTracks[hls.audioTrack].name;
}),
audioTrackId = tracks.length && tracks[0].id;
if (audioTrackId !== undefined && audioTrackId !== hls.audioTrack) {
hls.audioTrack = audioTrackId;
}
}
},
selectAudioTrack = function (audioTrack) {
common.find(".fp-audio", root)[0].innerHTML = audioTrack.lang || audioTrack.name;
common.find(".fp-audio-menu a", root).forEach(function (el) {
var adata = el.getAttribute("data-audio"),
isSelected = adata === audioTrack.name;
common.toggleClass(el, "fp-selected", isSelected);
common.toggleClass(el, "fp-color", isSelected);
});
},
removeAudioMenu = function () {
common.find(".fp-audio-menu", root).forEach(common.removeNode);
common.find(".fp-audio", root).forEach(common.removeNode);
},
nativeSubs,
hlsSubtitles,
setActiveSubtitleClass = function (idx) {
var menu = common.find(".fp-subtitle-menu", root)[0];
common.toggleClass(common.find('a.fp-selected', menu)[0], 'fp-selected');
common.toggleClass(common.find('a[data-subtitle-index="' + idx + '"]', menu)[0], 'fp-selected');
},
updateSubtitles = function (data, conf) {
var entries = uint8ArrayToString(data.payload),
id = data.frag.trackId;
if (!entries) {
return;
}
if (!hlsSubtitles[id]) {
hlsSubtitles[id] = [];
}
entries = conf.subtitleParser(entries);
entries.forEach(function (entry) {
if (entry.text) {
hlsSubtitles[id].push(entry);
if (player.ready) {
loadHlsSubtitle(player, entry, hlsSubtitles[id].length);
if (player.live) {
var seekOffset = player.video.seekOffset;
hlsSubtitles[id] = hlsSubtitles[id].filter(function (sub) {
return sub.endTime >= seekOffset;
});
player.subtitles = player.subtitles.filter(function (sub) {
return sub.endTime >= seekOffset;
});
player.cuepoints.forEach(function (cue) {
if (cue.subtitle && cue.time < seekOffset) {
player.removeCuepoint(cue);
}
});
}
}
}
});
},
disableSubtitleTracks = function () {
[].forEach.call(videoTag.textTracks, function (track) {
if (track.kind === "subtitles") {
track.mode = "hidden";
}
});
},
initSubtitles = function (data, conf) {
var subtitleTracks = data.subtitleTracks;
if (!conf.subtitles || !subtitleTracks.length || !support.inlineVideo || coreV6) {
return;
}
// can there be more than 1 groupId?
subtitleTracks = subtitleTracks.filter(function (subtitleTrack) {
return subtitleTrack.groupId === subtitleTracks[0].groupId;
});
player.video.subtitles = subtitleTracks.map(function (subtitleTrack) {
// fake tracks
var track = {
kind: "subtitles",
id: subtitleTrack.id,
srclang: subtitleTrack.lang,
label: subtitleTrack.name,
"default": subtitleTrack.default
};
common.append(videoTag, common.createElement("track", track));
return track;
});
player.on("ready." + engineName, function (_e, api) {
var tracks = hls.subtitleTracks,
defaultTrack;
if (!tracks || !tracks.length) {
return;
}
if (nativeSubs) {
common.addClass(videoTag, "native-subtitles");
} else {
disableSubtitleTracks();
}
tracks.map(function (sub, idx) {
if (sub.default) {
hls.subtitleTrack = idx;
}
});
defaultTrack = hls.subtitleTrack;
if (defaultTrack > -1) {
if (!nativeSubs && hlsSubtitles[defaultTrack]) {
hlsSubtitles[defaultTrack].forEach(function (entry, i) {
loadHlsSubtitle(api, entry, i + 1);
});
}
setActiveSubtitleClass(defaultTrack);
} else {
setActiveSubtitleClass(-1);
}
});
bean.on(root, "click." + engineName, ".fp-subtitle-menu [data-subtitle-index]", function (e) {
e.preventDefault();
var idx = e.target.getAttribute("data-subtitle-index");
player.disableSubtitles();
hls.subtitleTrack = idx;
if (idx < 0) {
disableSubtitleTracks();
return;
}
setActiveSubtitleClass(idx);
if (!nativeSubs && hlsSubtitles[idx]) {
hlsSubtitles[idx].forEach(function (entry, i) {
loadHlsSubtitle(player, entry, i + 1);
});
}
});
},
initAudio = function (data) {
audioGroups = [];
audioUXGroup = [];
data.levels.forEach(function (level) {
var agroup = level.attrs && level.attrs.AUDIO,
acodec = level.audioCodec;
if (agroup && audioGroups.indexOf(agroup) < 0 &&
(!acodec || mse.isTypeSupported("audio/mp4;codecs=" + acodec))) {
audioGroups.push(agroup);
}
});
if (audioGroups.length) {
// create sample group
audioUXGroup = data.audioTracks.filter(function (audioTrack) {
return audioTrack.groupId === audioGroups[0];
});
}
if (!support.inlineVideo || coreV6 || audioUXGroup.length < 2) {
return;
}
// audio menu
bean.on(root, "click." + engineName, ".fp-audio", function () {
var menu = common.find(".fp-audio-menu", root)[0];
if (common.hasClass(menu, "fp-active")) {
player.hideMenu();
} else {
player.showMenu(menu);
}
});
bean.on(root, "click." + engineName, ".fp-audio-menu a", function (e) {
var adata = e.target.getAttribute("data-audio"),
audioTracks = hls.audioTracks,
gid = audioTracks[hls.audioTrack].groupId,
// confine choice to current group
atrack = audioTracks.filter(function (at) {
return at.groupId === gid && (at.name === adata || at.lang === adata);
})[0];
hls.audioTrack = atrack.id;
selectAudioTrack(atrack);
});
player.on("ready." + engineName, function () {
removeAudioMenu();
if (!hls || !audioUXGroup || audioUXGroup.length < 2) {
return;
}
var ui = common.find(".fp-ui", root)[0],
controlbar = common.find(".fp-controls", ui)[0],
currentAudioTrack = hls.audioTracks[hls.audioTrack],
menu = common.createElement("div", {
className: "fp-menu fp-audio-menu",
css: {width: "auto"}
}, "<strong>Audio</strong>");
audioUXGroup.forEach(function (audioTrack) {
menu.appendChild(common.createElement("a", {
"data-audio": audioTrack.name
}, audioTrack.name));
});
ui.appendChild(menu);
controlbar.appendChild(common.createElement("strong", {
className: "fp-audio"
}, currentAudioTrack));
selectAudioTrack(currentAudioTrack);
});
},
// v6 qsel
qActive = "active",
dataQuality = function (quality) {
// e.g. "Level 1" -> "level1"
if (!quality) {
quality = player.quality;
} else if (player.qualities.indexOf(quality) < 0) {
quality = "abr";
}
return quality.toLowerCase().replace(/\ /g, "");
},
removeAllQualityClasses = function () {
var qualities = player.qualities;
if (qualities) {
common.removeClass(root, "quality-abr");
qualities.forEach(function (quality) {
common.removeClass(root, "quality-" + dataQuality(quality));
});
}
},
qClean = function () {
if (coreV6) {
delete player.hlsQualities;
removeAllQualityClasses();
common.find(".fp-quality-selector", root).forEach(common.removeNode);
}
},
qIndex = function () {
return player.hlsQualities[player.qualities.indexOf(player.quality) + 1];
},
// v7 qsel
lastSelectedLevel = -1,
// v7 and v6 qsel
initQualitySelection = function (hlsQualitiesConf, conf, data) {
var levels = data.levels,
hlsQualities,
qualities,
getLevel = function (q) {
return isNaN(Number(q))
? q.level
: q;
},
selector;
qClean();
if (!hlsQualitiesConf || levels.length < 2) {
return;
}
if (hlsQualitiesConf === "drive") {
switch (levels.length) {
case 4:
hlsQualities = [1, 2, 3];
break;
case 5:
hlsQualities = [1, 2, 3, 4];
break;
case 6:
hlsQualities = [1, 3, 4, 5];
break;
case 7:
hlsQualities = [1, 3, 5, 6];
break;
case 8:
hlsQualities = [1, 3, 6, 7];
break;
default:
if (levels.length < 3 ||
(levels[0].height && levels[2].height && levels[0].height === levels[2].height)) {
return;
}
hlsQualities = [1, 2];
}
hlsQualities.unshift(-1);
} else {
switch (typeof hlsQualitiesConf) {
case "object":
hlsQualities = hlsQualitiesConf.map(getLevel);
break;
case "string":
hlsQualities = hlsQualitiesConf.split(/\s*,\s*/).map(Number);
break;
default:
hlsQualities = levels.map(function (_level, i) {
return i;
});
hlsQualities.unshift(-1);
}
}
if (coreV6 && hlsQualities.indexOf(-1) < 0) {
hlsQualities.unshift(-1);
}
hlsQualities = hlsQualities.filter(function (q) {
if (q > -1 && q < levels.length) {
var level = levels[q];
// do not check audioCodec,
// as e.g. HE_AAC is decoded as LC_AAC by hls.js on Android
return !level.videoCodec ||
(level.videoCodec &&
mse.isTypeSupported('video/mp4;codecs=' + level.videoCodec));
} else {
return q === -1;
}
});
qualities = hlsQualities.map(function (idx, i) {
var level = levels[idx],
q = typeof hlsQualitiesConf === "object"
? hlsQualitiesConf.filter(function (q) {
return getLevel(q) === idx;
})[0]
: idx,
label = "Level " + (i + 1);
if (idx < 0) {
label = q.label || "Auto";
} else if (q.label) {
label = q.label;
} else {
if (level.width && level.height) {
label = Math.min(level.width, level.height) + "p";
}
if (hlsQualitiesConf !== "drive" && level.bitrate) {
label += " (" + Math.round(level.bitrate / 1000) + "k)";
}
}
if (coreV6) {
return label;
}
return {value: idx, label: label};
});
if (!coreV6) {
player.video.qualities = qualities;
if (lastSelectedLevel > -1 || hlsQualities.indexOf(-1) < 0) {
hls.loadLevel = hlsQualities.indexOf(lastSelectedLevel) < 0
? hlsQualities[0]
: lastSelectedLevel;
hls.config.startLevel = hls.loadLevel;
player.video.quality = hls.loadLevel;
} else {
player.video.quality = -1;
}
lastSelectedLevel = player.video.quality;
return;
}
// v6
player.hlsQualities = hlsQualities;
player.qualities = qualities.slice(1);
selector = common.createElement("ul", {
"class": "fp-quality-selector"
});
common.find(".fp-ui", root)[0].appendChild(selector);
if (!player.quality || qualities.indexOf(player.quality) < 1) {
player.quality = "abr";
} else {
hls.loadLevel = qIndex();
hls.config.startLevel = hls.loadLevel;
}
qualities.forEach(function (q) {
selector.appendChild(common.createElement("li", {
"data-quality": dataQuality(q)
}, q));
});
common.addClass(root, "quality-" + dataQuality());
bean.on(root, "click." + engineName, ".fp-quality-selector li", function (e) {
var choice = e.currentTarget,
items = common.find(".fp-quality-selector li", root),
smooth = conf.smoothSwitching,
paused = videoTag.paused;
if (common.hasClass(choice, qActive)) {
return;
}
if (!paused && !smooth) {
bean.one(videoTag, "pause." + engineName, function () {
common.removeClass(root, "is-paused");
});
}
items.forEach(function (item, i) {
var active = item === choice;
if (active) {
player.quality = i > 0
? player.qualities[i - 1]
: "abr";
if (smooth && !player.poster) {
hls.nextLevel = qIndex();
} else {
hls.currentLevel = qIndex();
}
common.addClass(choice, qActive);
if (paused) {
videoTag.play();
}
}
common.toggleClass(item, qActive, active);
});
removeAllQualityClasses();
common.addClass(root, "quality-" + dataQuality());
});
},
engine = {
engineName: engineName,
pick: function (sources) {
var source = sources.filter(function (s) {
return isHlsType(s.type);
})[0];
if (typeof source.src === "string") {
source.src = common.createAbsoluteUrl(source.src);
}
return source;
},
load: function (video) {
var conf = player.conf,
EVENTS = {
ended: "finish",
loadeddata: "ready",
pause: "pause",
play: "resume",
progress: "buffer",
ratechange: "speed",
seeked: "seek",
timeupdate: "progress",
volumechange: "volume",
error: "error"
},
HLSEVENTS = Hls.Events,
autoplay = !!video.autoplay || !!conf.autoplay || !!conf.splash,
hlsQualitiesConf = video.hlsQualities || conf.hlsQualities,
hlsUpdatedConf = extend(hlsconf, conf.hlsjs, video.hlsjs),
hlsClientConf = extend({}, hlsUpdatedConf);
// allow disabling level selection for single clips
if (video.hlsQualities === false) {
hlsQualitiesConf = false;
}
nativeSubs = hlsUpdatedConf.subtitles &&
support.subtitles && conf.nativesubtitles;
if (!hls) {
destroyVideoTag(root);
videoTag = common.createElement("video", {
"class": "fp-engine " + engineName + "-engine",
"autoplay": autoplay
? "autoplay"
: false,
"volume": player.volumeLevel
});
if (support.mutedAutoplay && !conf.splash && autoplay) {
videoTag.muted = true;
}
Object.keys(EVENTS).forEach(function (key) {
var flow = EVENTS[key],
type = key + "." + engineName,
arg;
bean.on(videoTag, type, function (e) {
if (conf.debug && flow.indexOf("progress") < 0) {
console.log(type, "->", flow, e.originalEvent);
}
var ct = videoTag.currentTime,
seekable = videoTag.seekable,
updatedVideo = player.video,
liveResumePosition = player.dvr
? updatedVideo.seekOffset
: player.live
? hls.liveSyncPosition
: 0,
buffered = videoTag.buffered,
i,
buffends = [],
src = updatedVideo.src,
quality = player.quality,
selectorIndex,
errorCode;
switch (flow) {
case "ready":
arg = extend(updatedVideo, {
duration: videoTag.duration,
seekable: seekable.length && seekable.end(null),
width: videoTag.videoWidth,
height: videoTag.videoHeight,
url: src
});
break;
case "resume":
removePoster();
if (!hlsUpdatedConf.bufferWhilePaused) {
hls.startLoad(ct);
}
if (ct < liveResumePosition) {
videoTag.currentTime = liveResumePosition;
}
break;
case "seek":
removePoster();
if (!hlsUpdatedConf.bufferWhilePaused && videoTag.paused) {
hls.stopLoad();
}
arg = ct;
break;
case "pause":
if (!hlsUpdatedConf.bufferWhilePaused) {
hls.stopLoad();
}
break;
case "progress":
arg = ct;
break;
case "speed":
arg = videoTag.playbackRate;
break;
case "volume":
arg = videoTag.volume;
break;
case "buffer":
for (i = 0; i < buffered.length; i += 1) {
buffends.push(buffered.end(i));
}
arg = buffends.filter(function (b) {
return b >= ct;
}).sort()[0];
updatedVideo.buffer = arg;
break;
case "finish":
if (hlsUpdatedConf.bufferWhilePaused && hls.autoLevelEnabled &&
(updatedVideo.loop || conf.playlist.length < 2 || conf.advance === false)) {
hls.nextLoadLevel = maxLevel;
}
break;
case "error":
errorCode = videoTag.error && videoTag.error.code;
if ((hlsUpdatedConf.recoverMediaError && (errorCode === 3 || !errorCode)) ||
(hlsUpdatedConf.recoverNetworkError && errorCode === 2) ||
(hlsUpdatedConf.recover && (errorCode === 2 || errorCode === 3))) {
e.preventDefault();
doRecover(conf, flow, errorCode === 2);
return;
}
arg = handleError(errorCode, src);
break;
}
player.trigger(flow, [player, arg]);
if (coreV6) {
if (flow === "ready" && quality) {
selectorIndex = quality === "abr"
? 0
: player.qualities.indexOf(quality) + 1;
common.addClass(common.find(".fp-quality-selector li", root)[selectorIndex],
qActive);
}
}
});
});
player.on("error." + engineName, function () {
if (hls) {
player.engine.unload();
}
}).on("beforeseek." + engineName, function (e, api, pos) {
if (pos === undefined) {
e.preventDefault();
} else if (!hlsUpdatedConf.bufferWhilePaused && api.paused) {
hls.startLoad(pos);
}
});
if (!coreV6) {
player.on("quality." + engineName, function (_e, _api, q) {
if (hlsUpdatedConf.smoothSwitching) {
hls.nextLevel = q;
} else {
hls.currentLevel = q;
}
lastSelectedLevel = q;
});
} else if (conf.poster) {
// v6 only
// engine too late, poster already removed
// abuse timeupdate to re-instate poster
player.on("stop." + engineName, addPoster);
// re-instate initial poster for live streams
if (player.live && !autoplay && !player.video.autoplay) {
bean.one(videoTag, "seeked." + engineName, addPoster);
}
}
common.prepend(common.find(".fp-player", root)[0], videoTag);
} else {
hls.destroy();
common.find("track", videoTag).forEach(common.removeNode);
common.removeClass(videoTag, "native-subtitles");
if ((player.video.src && video.src !== player.video.src) || video.index) {
common.attr(videoTag, "autoplay", "autoplay");
}
}
// #28 obtain api.video props before ready
player.video = video;
// reset
maxLevel = 0;
Object.keys(hlsUpdatedConf).forEach(function (key) {
if (!Hls.DefaultConfig.hasOwnProperty(key)) {
delete hlsClientConf[key];
}
var value = hlsUpdatedConf[key];
switch (key) {
case "adaptOnStartOnly":
if (value) {
hlsClientConf.startLevel = -1;
}
break;
case "autoLevelCapping":
if (value === false) {
value = -1;
}
hlsClientConf[key] = value;
break;
case "startLevel":
switch (value) {
case "auto":
value = -1;
break;
case "firstLevel":
value = undefined;
break;
}
hlsClientConf[key] = value;
break;
case "recover": // DEPRECATED
hlsUpdatedConf.recoverMediaError = false;
hlsUpdatedConf.recoverNetworkError = false;
recover = value;
break;
case "strict":
if (value) {
hlsUpdatedConf.recoverMediaError = false;
hlsUpdatedConf.recoverNetworkError = false;
recover = 0;
}
break;
}
});
hls = new Hls(hlsClientConf);
player.engine[engineName] = hls;
recoverMediaErrorDate = null;
swapAudioCodecDate = null;
player.disableSubtitles();
hlsSubtitles = {};
Object.keys(HLSEVENTS).forEach(function (key) {
var etype = HLSEVENTS[key],
listeners = hlsUpdatedConf.listeners,
expose = listeners && listeners.indexOf(etype) > -1;
hls.on(etype, function (e, data) {
var fperr,
errobj = {},
ERRORTYPES = Hls.ErrorTypes,
ERRORDETAILS = Hls.ErrorDetails,
updatedVideo = player.video,
src = updatedVideo.src;
switch (key) {
case "MANIFEST_PARSED":
if (hlsQualitiesSupport(conf) &&
!(!coreV6 && player.pluginQualitySelectorEnabled)) {
initQualitySelection(hlsQualitiesConf, hlsUpdatedConf, data);
} else if (coreV6) {
delete player.quality;
}
break;
case "MANIFEST_LOADED":
initAudio(data);
break;
case "SUBTITLE_TRACKS_UPDATED":
initSubtitles(data, hlsUpdatedConf);
break;
case "MEDIA_ATTACHED":
hls.loadSource(src);
break;
case "FRAG_LOADED":
if (data.frag.type === "subtitle" && hlsUpdatedConf.subtitles && !nativeSubs) {
updateSubtitles(data, conf);
}
if (hlsUpdatedConf.bufferWhilePaused && !player.live &&
hls.autoLevelEnabled && hls.nextLoadLevel > maxLevel) {
maxLevel = hls.nextLoadLevel;
}
break;
case "SUBTITLE_TRACK_SWITCH":
if (nativeSubs) {
[].forEach.call(videoTag.textTracks, function (track) {
track.mode = (hls.subtitleTracks[data.id].lang === track.language &&
track.kind === "subtitles")
? "showing"
: "hidden";
});
}
break;
case "FRAG_PARSING_METADATA":
if (coreV6) {
return;
}
data.samples.forEach(function (sample) {
var metadataHandler;
metadataHandler = function () {
if (videoTag.currentTime < sample.dts) {
return;
}
bean.off(videoTag, 'timeupdate.' + engineName, metadataHandler);
var txt = uint8ArrayToString(sample.unit || sample.data);
player.trigger('metadata', [player, {
key: txt.substr(10, 4),
data: txt
}]);
};
bean.on(videoTag, 'timeupdate.' + engineName, metadataHandler);
});
break;
case "LEVEL_UPDATED":
if (player.live) {
extend(updatedVideo, {
seekOffset: data.details.fragments[0].start + hls.config.nudgeOffset,
duration: hls.liveSyncPosition
});
if (player.dvr && player.playing) {
player.trigger('dvrwindow', [player, {
start: updatedVideo.seekOffset,
end: hls.liveSyncPosition
}]);
}
}
break;
case "LEVEL_SWITCHED":
if (hlsUpdatedConf.audioABR) {
player.one("buffer." + engineName, function (_e, api, buffer) {
if (buffer > api.video.time) {
audioAutoSwitch(data.level);
}
});
}
break;
case "BUFFER_APPENDED":
common.removeClass(root, recoveryClass);
break;
case "ERROR":
if (data.fatal || hlsUpdatedConf.strict) {
switch (data.type) {
case ERRORTYPES.NETWORK_ERROR:
if (hlsUpdatedConf.recoverNetworkError || recover) {
doRecover(conf, data.type, true);
} else if (data.frag && data.frag.url) {