/**
* @file html5.js
*/
import Tech from './tech.js';
import * as Dom from '../utils/dom.js';
import * as Url from '../utils/url.js';
import log from '../utils/log.js';
import * as browser from '../utils/browser.js';
import document from 'global/document';
import window from 'global/window';
import {defineLazyProperty, merge} from '../utils/obj';
import {toTitleCase} from '../utils/str.js';
import {NORMAL as TRACK_TYPES, REMOTE} from '../tracks/track-types';
import setupSourceset from './setup-sourceset';
import {silencePromise} from '../utils/promise';
/**
* HTML5 Media Controller - Wrapper for HTML5 Media API
*
* @mixes Tech~SourceHandlerAdditions
* @extends Tech
*/
class Html5 extends Tech {
/**
* Create an instance of this Tech.
*
* @param {Object} [options]
* The key/value store of player options.
*
* @param {Function} [ready]
* Callback function to call when the `HTML5` Tech is ready.
*/
constructor(options, ready) {
super(options, ready);
const source = options.source;
let crossoriginTracks = false;
this.featuresVideoFrameCallback = this.featuresVideoFrameCallback && this.el_.tagName === 'VIDEO';
// Set the source if one is provided
// 1) Check if the source is new (if not, we want to keep the original so playback isn't interrupted)
// 2) Check to see if the network state of the tag was failed at init, and if so, reset the source
// anyway so the error gets fired.
if (source && (this.el_.currentSrc !== source.src || (options.tag && options.tag.initNetworkState_ === 3))) {
this.setSource(source);
} else {
this.handleLateInit_(this.el_);
}
// setup sourceset after late sourceset/init
if (options.enableSourceset) {
this.setupSourcesetHandling_();
}
this.isScrubbing_ = false;
if (this.el_.hasChildNodes()) {
const nodes = this.el_.childNodes;
let nodesLength = nodes.length;
const removeNodes = [];
while (nodesLength--) {
const node = nodes[nodesLength];
const nodeName = node.nodeName.toLowerCase();
if (nodeName === 'track') {
if (!this.featuresNativeTextTracks) {
// Empty video tag tracks so the built-in player doesn't use them also.
// This may not be fast enough to stop HTML5 browsers from reading the tags
// so we'll need to turn off any default tracks if we're manually doing
// captions and subtitles. videoElement.textTracks
removeNodes.push(node);
} else {
// store HTMLTrackElement and TextTrack to remote list
this.remoteTextTrackEls().addTrackElement_(node);
this.remoteTextTracks().addTrack(node.track);
this.textTracks().addTrack(node.track);
if (!crossoriginTracks &&
!this.el_.hasAttribute('crossorigin') &&
Url.isCrossOrigin(node.src)) {
crossoriginTracks = true;
}
}
}
}
for (let i = 0; i < removeNodes.length; i++) {
this.el_.removeChild(removeNodes[i]);
}
}
this.proxyNativeTracks_();
if (this.featuresNativeTextTracks && crossoriginTracks) {
log.warn('Text Tracks are being loaded from another origin but the crossorigin attribute isn\'t used.\n' +
'This may prevent text tracks from loading.');
}
// prevent iOS Safari from disabling metadata text tracks during native playback
this.restoreMetadataTracksInIOSNativePlayer_();
// Determine if native controls should be used
// Our goal should be to get the custom controls on mobile solid everywhere
// so we can remove this all together. Right now this will block custom
// controls on touch enabled laptops like the Chrome Pixel
if ((browser.TOUCH_ENABLED || browser.IS_IPHONE) && options.nativeControlsForTouch === true) {
this.setControls(true);
}
// on iOS, we want to proxy `webkitbeginfullscreen` and `webkitendfullscreen`
// into a `fullscreenchange` event
this.proxyWebkitFullscreen_();
this.triggerReady();
}
/**
* Dispose of `HTML5` media element and remove all tracks.
*/
dispose() {
if (this.el_ && this.el_.resetSourceset_) {
this.el_.resetSourceset_();
}
Html5.disposeMediaElement(this.el_);
this.options_ = null;
// tech will handle clearing of the emulated track list
super.dispose();
}
/**
* Modify the media element so that we can detect when
* the source is changed. Fires `sourceset` just after the source has changed
*/
setupSourcesetHandling_() {
setupSourceset(this);
}
/**
* When a captions track is enabled in the iOS Safari native player, all other
* tracks are disabled (including metadata tracks), which nulls all of their
* associated cue points. This will restore metadata tracks to their pre-fullscreen
* state in those cases so that cue points are not needlessly lost.
*
* @private
*/
restoreMetadataTracksInIOSNativePlayer_() {
const textTracks = this.textTracks();
let metadataTracksPreFullscreenState;
// captures a snapshot of every metadata track's current state
const takeMetadataTrackSnapshot = () => {
metadataTracksPreFullscreenState = [];
for (let i = 0; i < textTracks.length; i++) {
const track = textTracks[i];
if (track.kind === 'metadata') {
metadataTracksPreFullscreenState.push({
track,
storedMode: track.mode
});
}
}
};
// snapshot each metadata track's initial state, and update the snapshot
// each time there is a track 'change' event
takeMetadataTrackSnapshot();
textTracks.addEventListener('change', takeMetadataTrackSnapshot);
this.on('dispose', () => textTracks.removeEventListener('change', takeMetadataTrackSnapshot));
const restoreTrackMode = () => {
for (let i = 0; i < metadataTracksPreFullscreenState.length; i++) {
const storedTrack = metadataTracksPreFullscreenState[i];
if (storedTrack.track.mode === 'disabled' && storedTrack.track.mode !== storedTrack.storedMode) {
storedTrack.track.mode = storedTrack.storedMode;
}
}
// we only want this handler to be executed on the first 'change' event
textTracks.removeEventListener('change', restoreTrackMode);
};
// when we enter fullscreen playback, stop updating the snapshot and
// restore all track modes to their pre-fullscreen state
this.on('webkitbeginfullscreen', () => {
textTracks.removeEventListener('change', takeMetadataTrackSnapshot);
// remove the listener before adding it just in case it wasn't previously removed
textTracks.removeEventListener('change', restoreTrackMode);
textTracks.addEventListener('change', restoreTrackMode);
});
// start updating the snapshot again after leaving fullscreen
this.on('webkitendfullscreen', () => {
// remove the listener before adding it just in case it wasn't previously removed
textTracks.removeEventListener('change', takeMetadataTrackSnapshot);
textTracks.addEventListener('change', takeMetadataTrackSnapshot);
// remove the restoreTrackMode handler in case it wasn't triggered during fullscreen playback
textTracks.removeEventListener('change', restoreTrackMode);
});
}
/**
* Attempt to force override of tracks for the given type
*
* @param {string} type - Track type to override, possible values include 'Audio',
* 'Video', and 'Text'.
* @param {boolean} override - If set to true native audio/video will be overridden,
* otherwise native audio/video will potentially be used.
* @private
*/
overrideNative_(type, override) {
// If there is no behavioral change don't add/remove listeners
if (override !== this[`featuresNative${type}Tracks`]) {
return;
}
const lowerCaseType = type.toLowerCase();
if (this[`${lowerCaseType}TracksListeners_`]) {
Object.keys(this[`${lowerCaseType}TracksListeners_`]).forEach((eventName) => {
const elTracks = this.el()[`${lowerCaseType}Tracks`];
elTracks.removeEventListener(eventName, this[`${lowerCaseType}TracksListeners_`][eventName]);
});
}
this[`featuresNative${type}Tracks`] = !override;
this[`${lowerCaseType}TracksListeners_`] = null;
this.proxyNativeTracksForType_(lowerCaseType);
}
/**
* Attempt to force override of native audio tracks.
*
* @param {boolean} override - If set to true native audio will be overridden,
* otherwise native audio will potentially be used.
*/
overrideNativeAudioTracks(override) {
this.overrideNative_('Audio', override);
}
/**
* Attempt to force override of native video tracks.
*
* @param {boolean} override - If set to true native video will be overridden,
* otherwise native video will potentially be used.
*/
overrideNativeVideoTracks(override) {
this.overrideNative_('Video', override);
}
/**
* Proxy native track list events for the given type to our track
* lists if the browser we are playing in supports that type of track list.
*
* @param {string} name - Track type; values include 'audio', 'video', and 'text'
* @private
*/
proxyNativeTracksForType_(name) {
const props = TRACK_TYPES[name];
const elTracks = this.el()[props.getterName];
const techTracks = this[props.getterName]();
if (!this[`featuresNative${props.capitalName}Tracks`] ||
!elTracks ||
!elTracks.addEventListener) {
return;
}
const listeners = {
change: (e) => {
const event = {
type: 'change',
target: techTracks,
currentTarget: techTracks,
srcElement: techTracks
};
techTracks.trigger(event);
// if we are a text track change event, we should also notify the
// remote text track list. This can potentially cause a false positive
// if we were to get a change event on a non-remote track and
// we triggered the event on the remote text track list which doesn't
// contain that track. However, best practices mean looping through the
// list of tracks and searching for the appropriate mode value, so,
// this shouldn't pose an issue
if (name === 'text') {
this[REMOTE.remoteText.getterName]().trigger(event);
}
},
addtrack(e) {
techTracks.addTrack(e.track);
},
removetrack(e) {
techTracks.removeTrack(e.track);
}
};
const removeOldTracks = function() {
const removeTracks = [];
for (let i = 0; i < techTracks.length; i++) {
let found = false;
for (let j = 0; j < elTracks.length; j++) {
if (elTracks[j] === techTracks[i]) {
found = true;
break;
}
}
if (!found) {
removeTracks.push(techTracks[i]);
}
}
while (removeTracks.length) {
techTracks.removeTrack(removeTracks.shift());
}
};
this[props.getterName + 'Listeners_'] = listeners;
Object.keys(listeners).forEach((eventName) => {
const listener = listeners[eventName];
elTracks.addEventListener(eventName, listener);
this.on('dispose', (e) => elTracks.removeEventListener(eventName, listener));
});
// Remove (native) tracks that are not used anymore
this.on('loadstart', removeOldTracks);
this.on('dispose', (e) => this.off('loadstart', removeOldTracks));
}
/**
* Proxy all native track list events to our track lists if the browser we are playing
* in supports that type of track list.
*
* @private
*/
proxyNativeTracks_() {
TRACK_TYPES.names.forEach((name) => {
this.proxyNativeTracksForType_(name);
});
}
/**
* Create the `Html5` Tech's DOM element.
*
* @return {Element}
* The element that gets created.
*/
createEl() {
let el = this.options_.tag;
// Check if this browser supports moving the element into the box.
// On the iPhone video will break if you move the element,
// So we have to create a brand new element.
// If we ingested the player div, we do not need to move the media element.
if (!el ||
!(this.options_.playerElIngest ||
this.movingMediaElementInDOM)) {
// If the original tag is still there, clone and remove it.
if (el) {
const clone = el.cloneNode(true);
if (el.parentNode) {
el.parentNode.insertBefore(clone, el);
}
Html5.disposeMediaElement(el);
el = clone;
} else {
el = document.createElement('video');
// determine if native controls should be used
const tagAttributes = this.options_.tag && Dom.getAttributes(this.options_.tag);
const attributes = merge({}, tagAttributes);
if (!browser.TOUCH_ENABLED || this.options_.nativeControlsForTouch !== true) {
delete attributes.controls;
}
Dom.setAttributes(
el,
Object.assign(attributes, {
id: this.options_.techId,
class: 'vjs-tech'
})
);
}
el.playerId = this.options_.playerId;
}
if (typeof this.options_.preload !== 'undefined') {
Dom.setAttribute(el, 'preload', this.options_.preload);
}
if (this.options_.disablePictureInPicture !== undefined) {
el.disablePictureInPicture = this.options_.disablePictureInPicture;
}
// Update specific tag settings, in case they were overridden
// `autoplay` has to be *last* so that `muted` and `playsinline` are present
// when iOS/Safari or other browsers attempt to autoplay.
const settingsAttrs = ['loop', 'muted', 'playsinline', 'autoplay'];
for (let i = 0; i < settingsAttrs.length; i++) {
const attr = settingsAttrs[i];
const value = this.options_[attr];
if (typeof value !== 'undefined') {
if (value) {
Dom.setAttribute(el, attr, attr);
} else {
Dom.removeAttribute(el, attr);
}
el[attr] = value;
}
}
return el;
}
/**
* This will be triggered if the loadstart event has already fired, before videojs was
* ready. Two known examples of when this can happen are:
* 1. If we're loading the playback object after it has started loading
* 2. The media is already playing the (often with autoplay on) then
*
* This function will fire another loadstart so that videojs can catchup.
*
* @fires Tech#loadstart
*
* @return {undefined}
* returns nothing.
*/
handleLateInit_(el) {
if (el.networkState === 0 || el.networkState === 3) {
// The video element hasn't started loading the source yet
// or didn't find a source
return;
}
if (el.readyState === 0) {
// NetworkState is set synchronously BUT loadstart is fired at the
// end of the current stack, usually before setInterval(fn, 0).
// So at this point we know loadstart may have already fired or is
// about to fire, and either way the player hasn't seen it yet.
// We don't want to fire loadstart prematurely here and cause a
// double loadstart so we'll wait and see if it happens between now
// and the next loop, and fire it if not.
// HOWEVER, we also want to make sure it fires before loadedmetadata
// which could also happen between now and the next loop, so we'll
// watch for that also.
let loadstartFired = false;
const setLoadstartFired = function() {
loadstartFired = true;
};
this.on('loadstart', setLoadstartFired);
const triggerLoadstart = function() {
// We did miss the original loadstart. Make sure the player
// sees loadstart before loadedmetadata
if (!loadstartFired) {
this.trigger('loadstart');
}
};
this.on('loadedmetadata', triggerLoadstart);
this.ready(function() {
this.off('loadstart', setLoadstartFired);
this.off('loadedmetadata', triggerLoadstart);
if (!loadstartFired) {
// We did miss the original native loadstart. Fire it now.
this.trigger('loadstart');
}
});
return;
}
// From here on we know that loadstart already fired and we missed it.
// The other readyState events aren't as much of a problem if we double
// them, so not going to go to as much trouble as loadstart to prevent
// that unless we find reason to.
const eventsToTrigger = ['loadstart'];
// loadedmetadata: newly equal to HAVE_METADATA (1) or greater
eventsToTrigger.push('loadedmetadata');
// loadeddata: newly increased to HAVE_CURRENT_DATA (2) or greater
if (el.readyState >= 2) {
eventsToTrigger.push('loadeddata');
}
// canplay: newly increased to HAVE_FUTURE_DATA (3) or greater
if (el.readyState >= 3) {
eventsToTrigger.push('canplay');
}
// canplaythrough: newly equal to HAVE_ENOUGH_DATA (4)
if (el.readyState >= 4) {
eventsToTrigger.push('canplaythrough');
}
// We still need to give the player time to add event listeners
this.ready(function() {
eventsToTrigger.forEach(function(type) {
this.trigger(type);
}, this);
});
}
/**
* Set whether we are scrubbing or not.
* This is used to decide whether we should use `fastSeek` or not.
* `fastSeek` is used to provide trick play on Safari browsers.
*
* @param {boolean} isScrubbing
* - true for we are currently scrubbing
* - false for we are no longer scrubbing
*/
setScrubbing(isScrubbing) {
this.isScrubbing_ = isScrubbing;
}
/**
* Get whether we are scrubbing or not.
*
* @return {boolean} isScrubbing
* - true for we are currently scrubbing
* - false for we are no longer scrubbing
*/
scrubbing() {
return this.isScrubbing_;
}
/**
* Set current time for the `HTML5` tech.
*
* @param {number} seconds
* Set the current time of the media to this.
*/
setCurrentTime(seconds) {
try {
if (this.isScrubbing_ && this.el_.fastSeek && browser.IS_ANY_SAFARI) {
this.el_.fastSeek(seconds);
} else {
this.el_.currentTime = seconds;
}
} catch (e) {
log(e, 'Video is not ready. (Video.js)');
// this.warning(VideoJS.warnings.videoNotReady);
}
}
/**
* Get the current duration of the HTML5 media element.
*
* @return {number}
* The duration of the media or 0 if there is no duration.
*/
duration() {
// Android Chrome will report duration as Infinity for VOD HLS until after
// playback has started, which triggers the live display erroneously.
// Return NaN if playback has not started and trigger a durationupdate once
// the duration can be reliably known.
if (
this.el_.duration === Infinity &&
browser.IS_ANDROID &&
browser.IS_CHROME &&
this.el_.currentTime === 0
) {
// Wait for the first `timeupdate` with currentTime > 0 - there may be
// several with 0
const checkProgress = () => {
if (this.el_.currentTime > 0) {
// Trigger durationchange for genuinely live video
if (this.el_.duration === Infinity) {
this.trigger('durationchange');
}
this.off('timeupdate', checkProgress);
}
};
this.on('timeupdate', checkProgress);
return NaN;
}
return this.el_.duration || NaN;
}
/**
* Get the current width of the HTML5 media element.
*
* @return {number}
* The width of the HTML5 media element.
*/
width() {
return this.el_.offsetWidth;
}
/**
* Get the current height of the HTML5 media element.
*
* @return {number}
* The height of the HTML5 media element.
*/
height() {
return this.el_.offsetHeight;
}
/**
* Proxy iOS `webkitbeginfullscreen` and `webkitendfullscreen` into
* `fullscreenchange` event.
*
* @private
* @fires fullscreenchange
* @listens webkitendfullscreen
* @listens webkitbeginfullscreen
* @listens webkitbeginfullscreen
*/
proxyWebkitFullscreen_() {
if (!('webkitDisplayingFullscreen' in this.el_)) {
return;
}
const endFn = function() {
this.trigger('fullscreenchange', { isFullscreen: false });
// Safari will sometimes set controls on the videoelement when existing fullscreen.
if (this.el_.controls && !this.options_.nativeControlsForTouch && this.controls()) {
this.el_.controls = false;
}
};
const beginFn = function() {
if ('webkitPresentationMode' in this.el_ && this.el_.webkitPresentationMode !== 'picture-in-picture') {
this.one('webkitendfullscreen', endFn);
this.trigger('fullscreenchange', {
isFullscreen: true,
// set a flag in case another tech triggers fullscreenchange
nativeIOSFullscreen: true
});
}
};
this.on('webkitbeginfullscreen', beginFn);
this.on('dispose', () => {
this.off('webkitbeginfullscreen', beginFn);
this.off('webkitendfullscreen', endFn);
});
}
/**
* Check if fullscreen is supported on the video el.
*
* @return {boolean}
* - True if fullscreen is supported.
* - False if fullscreen is not supported.
*/
supportsFullScreen() {
return typeof this.el_.webkitEnterFullScreen === 'function';
}
/**
* Request that the `HTML5` Tech enter fullscreen.
*/
enterFullScreen() {
const video = this.el_;
if (video.paused && video.networkState <= video.HAVE_METADATA) {
// attempt to prime the video element for programmatic access
// this isn't necessary on the desktop but shouldn't hurt
silencePromise(this.el_.play());
// playing and pausing synchronously during the transition to fullscreen
// can get iOS ~6.1 devices into a play/pause loop
this.setTimeout(function() {
video.pause();
try {
video.webkitEnterFullScreen();
} catch (e) {
this.trigger('fullscreenerror', e);
}
}, 0);
} else {
try {
video.webkitEnterFullScreen();
} catch (e) {
this.trigger('fullscreenerror', e);
}
}
}
/**
* Request that the `HTML5` Tech exit fullscreen.
*/
exitFullScreen() {
if (!this.el_.webkitDisplayingFullscreen) {
this.trigger('fullscreenerror', new Error('The video is not fullscreen'));
return;
}
this.el_.webkitExitFullScreen();
}
/**
* Create a floating video window always on top of other windows so that users may
* continue consuming media while they interact with other content sites, or
* applications on their device.
*
* @see [Spec]{@link https://wicg.github.io/picture-in-picture}
*
* @return {Promise}
* A promise with a Picture-in-Picture window.
*/
requestPictureInPicture() {
return this.el_.requestPictureInPicture();
}
/**
* Native requestVideoFrameCallback if supported by browser/tech, or fallback
* Don't use rVCF on Safari when DRM is playing, as it doesn't fire
* Needs to be checked later than the constructor
* This will be a false positive for clear sources loaded after a Fairplay source
*
* @param {function} cb function to call
* @return {number} id of request
*/
requestVideoFrameCallback(cb) {
if (this.featuresVideoFrameCallback && !this.el_.webkitKeys) {
return this.el_.requestVideoFrameCallback(cb);
}
return super.requestVideoFrameCallback(cb);
}
/**
* Native or fallback requestVideoFrameCallback
*
* @param {number} id request id to cancel
*/
cancelVideoFrameCallback(id) {
if (this.featuresVideoFrameCallback && !this.el_.webkitKeys) {
this.el_.cancelVideoFrameCallback(id);
} else {
super.cancelVideoFrameCallback(id);
}
}
/**
* A getter/setter for the `Html5` Tech's source object.
* > Note: Please use {@link Html5#setSource}
*
* @param {Tech~SourceObject} [src]
* The source object you want to set on the `HTML5` techs element.
*
* @return {Tech~SourceObject|undefined}
* - The current source object when a source is not passed in.
* - undefined when setting
*
* @deprecated Since version 5.
*/
src(src) {
if (src === undefined) {
return this.el_.src;
}
// Setting src through `src` instead of `setSrc` will be deprecated
this.setSrc(src);
}
/**
* Reset the tech by removing all sources and then calling
* {@link Html5.resetMediaElement}.
*/
reset() {
Html5.resetMediaElement(this.el_);
}
/**
* Get the current source on the `HTML5` Tech. Falls back to returning the source from
* the HTML5 media element.
*
* @return {Tech~SourceObject}
* The current source object from the HTML5 tech. With a fallback to the
* elements source.
*/
currentSrc() {
if (this.currentSource_) {
return this.currentSource_.src;
}
return this.el_.currentSrc;
}
/**
* Set controls attribute for the HTML5 media Element.
*
* @param {string} val
* Value to set the controls attribute to
*/
setControls(val) {
this.el_.controls = !!val;
}
/**
* Create and returns a remote {@link TextTrack} object.
*
* @param {string} kind
* `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata)
*
* @param {string} [label]
* Label to identify the text track
*
* @param {string} [language]
* Two letter language abbreviation
*
* @return {TextTrack}
* The TextTrack that gets created.
*/
addTextTrack(kind, label, language) {
if (!this.featuresNativeTextTracks) {
return super.addTextTrack(kind, label, language);
}
return this.el_.addTextTrack(kind, label, language);
}
/**
* Creates either native TextTrack or an emulated TextTrack depending
* on the value of `featuresNativeTextTracks`
*
* @param {Object} options
* The object should contain the options to initialize the TextTrack with.
*
* @param {string} [options.kind]
* `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata).
*
* @param {string} [options.label]
* Label to identify the text track
*
* @param {string} [options.language]
* Two letter language abbreviation.
*
* @param {boolean} [options.default]
* Default this track to on.
*
* @param {string} [options.id]
* The internal id to assign this track.
*
* @param {string} [options.src]
* A source url for the track.
*
* @return {HTMLTrackElement}
* The track element that gets created.
*/
createRemoteTextTrack(options) {
if (!this.featuresNativeTextTracks) {
return super.createRemoteTextTrack(options);
}
const htmlTrackElement = document.createElement('track');
if (options.kind) {
htmlTrackElement.kind = options.kind;
}
if (options.label) {
htmlTrackElement.label = options.label;
}
if (options.language || options.srclang) {
htmlTrackElement.srclang = options.language || options.srclang;
}
if (options.default) {
htmlTrackElement.default = options.default;
}
if (options.id) {
htmlTrackElement.id = options.id;
}
if (options.src) {
htmlTrackElement.src = options.src;
}
return htmlTrackElement;
}
/**
* Creates a remote text track object and returns an html track element.
*
* @param {Object} options The object should contain values for
* kind, language, label, and src (location of the WebVTT file)
* @param {boolean} [manualCleanup=false] if set to true, the TextTrack
* will not be removed from the TextTrackList and HtmlTrackElementList
* after a source change
* @return {HTMLTrackElement} An Html Track Element.
* This can be an emulated {@link HTMLTrackElement} or a native one.
*
*/
addRemoteTextTrack(options, manualCleanup) {
const htmlTrackElement = super.addRemoteTextTrack(options, manualCleanup);
if (this.featuresNativeTextTracks) {
this.el().appendChild(htmlTrackElement);
}
return htmlTrackElement;
}
/**
* Remove remote `TextTrack` from `TextTrackList` object
*
* @param {TextTrack} track
* `TextTrack` object to remove
*/
removeRemoteTextTrack(track) {
super.removeRemoteTextTrack(track);
if (this.featuresNativeTextTracks) {
const tracks = this.$$('track');
let i = tracks.length;
while (i--) {
if (track === tracks[i] || track === tracks[i].track) {
this.el().removeChild(tracks[i]);
}
}
}
}
/**
* Gets available media playback quality metrics as specified by the W3C's Media
* Playback Quality API.
*
* @see [Spec]{@link https://wicg.github.io/media-playback-quality}
*
* @return {Object}
* An object with supported media playback quality metrics
*/
getVideoPlaybackQuality() {
if (typeof this.el().getVideoPlaybackQuality === 'function') {
return this.el().getVideoPlaybackQuality();
}
const videoPlaybackQuality = {};
if (typeof this.el().webkitDroppedFrameCount !== 'undefined' &&
typeof this.el().webkitDecodedFrameCount !== 'undefined') {
videoPlaybackQuality.droppedVideoFrames = this.el().webkitDroppedFrameCount;
videoPlaybackQuality.totalVideoFrames = this.el().webkitDecodedFrameCount;
}
if (window.performance) {
videoPlaybackQuality.creationTime = window.performance.now();
}
return videoPlaybackQuality;
}
}
/* HTML5 Support Testing ---------------------------------------------------- */
/**
* Element for testing browser HTML5 media capabilities
*
* @type {Element}
* @constant
* @private
*/
defineLazyProperty(Html5, 'TEST_VID', function() {
if (!Dom.isReal()) {
return;
}
const video = document.createElement('video');
const track = document.createElement('track');
track.kind = 'captions';
track.srclang = 'en';
track.label = 'English';
video.appendChild(track);
return video;
});
/**
* Check if HTML5 media is supported by this browser/device.
*
* @return {boolean}
* - True if HTML5 media is supported.
* - False if HTML5 media is not supported.
*/
Html5.isSupported = function() {
// IE with no Media Player is a LIAR! (#984)
try {
Html5.TEST_VID.volume = 0.5;
} catch (e) {
return false;
}
return !!(Html5.TEST_VID && Html5.TEST_VID.canPlayType);
};
/**
* Check if the tech can support the given type
*
* @param {string} type
* The mimetype to check
* @return {string} 'probably', 'maybe', or '' (empty string)
*/
Html5.canPlayType = function(type) {
return Html5.TEST_VID.canPlayType(type);
};
/**
* Check if the tech can support the given source
*
* @param {Object} srcObj
* The source object
* @param {Object} options
* The options passed to the tech
* @return {string} 'probably', 'maybe', or '' (empty string)
*/
Html5.canPlaySource = function(srcObj, options) {
return Html5.canPlayType(srcObj.type);
};
/**
* Check if the volume can be changed in this browser/device.
* Volume cannot be changed in a lot of mobile devices.
* Specifically, it can't be changed from 1 on iOS.
*
* @return {boolean}
* - True if volume can be controlled
* - False otherwise
*/
Html5.canControlVolume = function() {
// IE will error if Windows Media Player not installed #3315
try {
const volume = Html5.TEST_VID.volume;
Html5.TEST_VID.volume = (volume / 2) + 0.1;
const canControl = volume !== Html5.TEST_VID.volume;
// With the introduction of iOS 15, there are cases where the volume is read as
// changed but reverts back to its original state at the start of the next tick.
// To determine whether volume can be controlled on iOS,
// a timeout is set and the volume is checked asynchronously.
// Since `features` doesn't currently work asynchronously, the value is manually set.
if (canControl && browser.IS_IOS) {
window.setTimeout(() => {
if (Html5 && Html5.prototype) {
Html5.prototype.featuresVolumeControl = volume !== Html5.TEST_VID.volume;
}
});
// default iOS to false, which will be updated in the timeout above.
return false;
}
return canControl;
} catch (e) {
return false;
}
};
/**
* Check if the volume can be muted in this browser/device.
* Some devices, e.g. iOS, don't allow changing volume
* but permits muting/unmuting.
*
* @return {boolean}
* - True if volume can be muted
* - False otherwise
*/
Html5.canMuteVolume = function() {
try {
const muted = Html5.TEST_VID.muted;
// in some versions of iOS muted property doesn't always
// work, so we want to set both property and attribute
Html5.TEST_VID.muted = !muted;
if (Html5.TEST_VID.muted) {
Dom.setAttribute(Html5.TEST_VID, 'muted', 'muted');
} else {
Dom.removeAttribute(Html5.TEST_VID, 'muted', 'muted');
}
return muted !== Html5.TEST_VID.muted;
} catch (e) {
return false;
}
};
/**
* Check if the playback rate can be changed in this browser/device.
*
* @return {boolean}
* - True if playback rate can be controlled
* - False otherwise
*/
Html5.canControlPlaybackRate = function() {
// Playback rate API is implemented in Android Chrome, but doesn't do anything
// https://github.com/videojs/video.js/issues/3180
if (browser.IS_ANDROID && browser.IS_CHROME && browser.CHROME_VERSION < 58) {
return false;
}
// IE will error if Windows Media Player not installed #3315
try {
const playbackRate = Html5.TEST_VID.playbackRate;
Html5.TEST_VID.playbackRate = (playbackRate / 2) + 0.1;
return playbackRate !== Html5.TEST_VID.playbackRate;
} catch (e) {
return false;
}
};
/**
* Check if we can override a video/audio elements attributes, with
* Object.defineProperty.
*
* @return {boolean}
* - True if builtin attributes can be overridden
* - False otherwise
*/
Html5.canOverrideAttributes = function() {
// if we cannot overwrite the src/innerHTML property, there is no support
// iOS 7 safari for instance cannot do this.
try {
const noop = () => {};
Object.defineProperty(document.createElement('video'), 'src', {get: noop, set: noop});
Object.defineProperty(document.createElement('audio'), 'src', {get: noop, set: noop});
Object.defineProperty(document.createElement('video'), 'innerHTML', {get: noop, set: noop});
Object.defineProperty(document.createElement('audio'), 'innerHTML', {get: noop, set: noop});
} catch (e) {
return false;
}
return true;
};
/**
* Check to see if native `TextTrack`s are supported by this browser/device.
*
* @return {boolean}
* - True if native `TextTrack`s are supported.
* - False otherwise
*/
Html5.supportsNativeTextTracks = function() {
return browser.IS_ANY_SAFARI || (browser.IS_IOS && browser.IS_CHROME);
};
/**
* Check to see if native `VideoTrack`s are supported by this browser/device
*
* @return {boolean}
* - True if native `VideoTrack`s are supported.
* - False otherwise
*/
Html5.supportsNativeVideoTracks = function() {
return !!(Html5.TEST_VID && Html5.TEST_VID.videoTracks);
};
/**
* Check to see if native `AudioTrack`s are supported by this browser/device
*
* @return {boolean}
* - True if native `AudioTrack`s are supported.
* - False otherwise
*/
Html5.supportsNativeAudioTracks = function() {
return !!(Html5.TEST_VID && Html5.TEST_VID.audioTracks);
};
/**
* An array of events available on the Html5 tech.
*
* @private
* @type {Array}
*/
Html5.Events = [
'loadstart',
'suspend',
'abort',
'error',
'emptied',
'stalled',
'loadedmetadata',
'loadeddata',
'canplay',
'canplaythrough',
'playing',
'waiting',
'seeking',
'seeked',
'ended',
'durationchange',
'timeupdate',
'progress',
'play',
'pause',
'ratechange',
'resize',
'volumechange'
];
/**
* Boolean indicating whether the `Tech` supports volume control.
*
* @type {boolean}
* @default {@link Html5.canControlVolume}
*/
/**
* Boolean indicating whether the `Tech` supports muting volume.
*
* @type {boolean}
* @default {@link Html5.canMuteVolume}
*/
/**
* Boolean indicating whether the `Tech` supports changing the speed at which the media
* plays. Examples:
* - Set player to play 2x (twice) as fast
* - Set player to play 0.5x (half) as fast
*
* @type {boolean}
* @default {@link Html5.canControlPlaybackRate}
*/
/**
* Boolean indicating whether the `Tech` supports the `sourceset` event.
*
* @type {boolean}
* @default
*/
/**
* Boolean indicating whether the `HTML5` tech currently supports native `TextTrack`s.
*
* @type {boolean}
* @default {@link Html5.supportsNativeTextTracks}
*/
/**
* Boolean indicating whether the `HTML5` tech currently supports native `VideoTrack`s.
*
* @type {boolean}
* @default {@link Html5.supportsNativeVideoTracks}
*/
/**
* Boolean indicating whether the `HTML5` tech currently supports native `AudioTrack`s.
*
* @type {boolean}
* @default {@link Html5.supportsNativeAudioTracks}
*/
[
['featuresMuteControl', 'canMuteVolume'],
['featuresPlaybackRate', 'canControlPlaybackRate'],
['featuresSourceset', 'canOverrideAttributes'],
['featuresNativeTextTracks', 'supportsNativeTextTracks'],
['featuresNativeVideoTracks', 'supportsNativeVideoTracks'],
['featuresNativeAudioTracks', 'supportsNativeAudioTracks']
].forEach(function([key, fn]) {
defineLazyProperty(Html5.prototype, key, () => Html5[fn](), true);
});
Html5.prototype.featuresVolumeControl = Html5.canControlVolume();
/**
* Boolean indicating whether the `HTML5` tech currently supports the media element
* moving in the DOM. iOS breaks if you move the media element, so this is set this to
* false there. Everywhere else this should be true.
*
* @type {boolean}
* @default
*/
Html5.prototype.movingMediaElementInDOM = !browser.IS_IOS;
// TODO: Previous comment: No longer appears to be used. Can probably be removed.
// Is this true?
/**
* Boolean indicating whether the `HTML5` tech currently supports automatic media resize
* when going into fullscreen.
*
* @type {boolean}
* @default
*/
Html5.prototype.featuresFullscreenResize = true;
/**
* Boolean indicating whether the `HTML5` tech currently supports the progress event.
* If this is false, manual `progress` events will be triggered instead.
*
* @type {boolean}
* @default
*/
Html5.prototype.featuresProgressEvents = true;
/**
* Boolean indicating whether the `HTML5` tech currently supports the timeupdate event.
* If this is false, manual `timeupdate` events will be triggered instead.
*
* @default
*/
Html5.prototype.featuresTimeupdateEvents = true;
/**
* Whether the HTML5 el supports `requestVideoFrameCallback`
*
* @type {boolean}
*/
Html5.prototype.featuresVideoFrameCallback = !!(Html5.TEST_VID && Html5.TEST_VID.requestVideoFrameCallback);
Html5.disposeMediaElement = function(el) {
if (!el) {
return;
}
if (el.parentNode) {
el.parentNode.removeChild(el);
}
// remove any child track or source nodes to prevent their loading
while (el.hasChildNodes()) {
el.removeChild(el.firstChild);
}
// remove any src reference. not setting `src=''` because that causes a warning
// in firefox
el.removeAttribute('src');
// force the media element to update its loading state by calling load()
// however IE on Windows 7N has a bug that throws an error so need a try/catch (#793)
if (typeof el.load === 'function') {
// wrapping in an iife so it's not deoptimized (#1060#discussion_r10324473)
(function() {
try {
el.load();
} catch (e) {
// not supported
}
}());
}
};
Html5.resetMediaElement = function(el) {
if (!el) {
return;
}
const sources = el.querySelectorAll('source');
let i = sources.length;
while (i--) {
el.removeChild(sources[i]);
}
// remove any src reference.
// not setting `src=''` because that throws an error
el.removeAttribute('src');
if (typeof el.load === 'function') {
// wrapping in an iife so it's not deoptimized (#1060#discussion_r10324473)
(function() {
try {
el.load();
} catch (e) {
// satisfy linter
}
}());
}
};
/* Native HTML5 element property wrapping ----------------------------------- */
// Wrap native boolean attributes with getters that check both property and attribute
// The list is as followed:
// muted, defaultMuted, autoplay, controls, loop, playsinline
[
/**
* Get the value of `muted` from the media element. `muted` indicates
* that the volume for the media should be set to silent. This does not actually change
* the `volume` attribute.
*
* @method Html5#muted
* @return {boolean}
* - True if the value of `volume` should be ignored and the audio set to silent.
* - False if the value of `volume` should be used.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-muted}
*/
'muted',
/**
* Get the value of `defaultMuted` from the media element. `defaultMuted` indicates
* whether the media should start muted or not. Only changes the default state of the
* media. `muted` and `defaultMuted` can have different values. {@link Html5#muted} indicates the
* current state.
*
* @method Html5#defaultMuted
* @return {boolean}
* - The value of `defaultMuted` from the media element.
* - True indicates that the media should start muted.
* - False indicates that the media should not start muted
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultmuted}
*/
'defaultMuted',
/**
* Get the value of `autoplay` from the media element. `autoplay` indicates
* that the media should start to play as soon as the page is ready.
*
* @method Html5#autoplay
* @return {boolean}
* - The value of `autoplay` from the media element.
* - True indicates that the media should start as soon as the page loads.
* - False indicates that the media should not start as soon as the page loads.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-autoplay}
*/
'autoplay',
/**
* Get the value of `controls` from the media element. `controls` indicates
* whether the native media controls should be shown or hidden.
*
* @method Html5#controls
* @return {boolean}
* - The value of `controls` from the media element.
* - True indicates that native controls should be showing.
* - False indicates that native controls should be hidden.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-controls}
*/
'controls',
/**
* Get the value of `loop` from the media element. `loop` indicates
* that the media should return to the start of the media and continue playing once
* it reaches the end.
*
* @method Html5#loop
* @return {boolean}
* - The value of `loop` from the media element.
* - True indicates that playback should seek back to start once
* the end of a media is reached.
* - False indicates that playback should not loop back to the start when the
* end of the media is reached.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-loop}
*/
'loop',
/**
* Get the value of `playsinline` from the media element. `playsinline` indicates
* to the browser that non-fullscreen playback is preferred when fullscreen
* playback is the native default, such as in iOS Safari.
*
* @method Html5#playsinline
* @return {boolean}
* - The value of `playsinline` from the media element.
* - True indicates that the media should play inline.
* - False indicates that the media should not play inline.
*
* @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline}
*/
'playsinline'
].forEach(function(prop) {
Html5.prototype[prop] = function() {
return this.el_[prop] || this.el_.hasAttribute(prop);
};
});
// Wrap native boolean attributes with setters that set both property and attribute
// The list is as followed:
// setMuted, setDefaultMuted, setAutoplay, setLoop, setPlaysinline
// setControls is special-cased above
[
/**
* Set the value of `muted` on the media element. `muted` indicates that the current
* audio level should be silent.
*
* @method Html5#setMuted
* @param {boolean} muted
* - True if the audio should be set to silent
* - False otherwise
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-muted}
*/
'muted',
/**
* Set the value of `defaultMuted` on the media element. `defaultMuted` indicates that the current
* audio level should be silent, but will only effect the muted level on initial playback..
*
* @method Html5.prototype.setDefaultMuted
* @param {boolean} defaultMuted
* - True if the audio should be set to silent
* - False otherwise
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultmuted}
*/
'defaultMuted',
/**
* Set the value of `autoplay` on the media element. `autoplay` indicates
* that the media should start to play as soon as the page is ready.
*
* @method Html5#setAutoplay
* @param {boolean} autoplay
* - True indicates that the media should start as soon as the page loads.
* - False indicates that the media should not start as soon as the page loads.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-autoplay}
*/
'autoplay',
/**
* Set the value of `loop` on the media element. `loop` indicates
* that the media should return to the start of the media and continue playing once
* it reaches the end.
*
* @method Html5#setLoop
* @param {boolean} loop
* - True indicates that playback should seek back to start once
* the end of a media is reached.
* - False indicates that playback should not loop back to the start when the
* end of the media is reached.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-loop}
*/
'loop',
/**
* Set the value of `playsinline` from the media element. `playsinline` indicates
* to the browser that non-fullscreen playback is preferred when fullscreen
* playback is the native default, such as in iOS Safari.
*
* @method Html5#setPlaysinline
* @param {boolean} playsinline
* - True indicates that the media should play inline.
* - False indicates that the media should not play inline.
*
* @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline}
*/
'playsinline'
].forEach(function(prop) {
Html5.prototype['set' + toTitleCase(prop)] = function(v) {
this.el_[prop] = v;
if (v) {
this.el_.setAttribute(prop, prop);
} else {
this.el_.removeAttribute(prop);
}
};
});
// Wrap native properties with a getter
// The list is as followed
// paused, currentTime, buffered, volume, poster, preload, error, seeking
// seekable, ended, playbackRate, defaultPlaybackRate, disablePictureInPicture
// played, networkState, readyState, videoWidth, videoHeight, crossOrigin
[
/**
* Get the value of `paused` from the media element. `paused` indicates whether the media element
* is currently paused or not.
*
* @method Html5#paused
* @return {boolean}
* The value of `paused` from the media element.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-paused}
*/
'paused',
/**
* Get the value of `currentTime` from the media element. `currentTime` indicates
* the current second that the media is at in playback.
*
* @method Html5#currentTime
* @return {number}
* The value of `currentTime` from the media element.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-currenttime}
*/
'currentTime',
/**
* Get the value of `buffered` from the media element. `buffered` is a `TimeRange`
* object that represents the parts of the media that are already downloaded and
* available for playback.
*
* @method Html5#buffered
* @return {TimeRange}
* The value of `buffered` from the media element.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-buffered}
*/
'buffered',
/**
* Get the value of `volume` from the media element. `volume` indicates
* the current playback volume of audio for a media. `volume` will be a value from 0
* (silent) to 1 (loudest and default).
*
* @method Html5#volume
* @return {number}
* The value of `volume` from the media element. Value will be between 0-1.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-a-volume}
*/
'volume',
/**
* Get the value of `poster` from the media element. `poster` indicates
* that the url of an image file that can/will be shown when no media data is available.
*
* @method Html5#poster
* @return {string}
* The value of `poster` from the media element. Value will be a url to an
* image.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-video-poster}
*/
'poster',
/**
* Get the value of `preload` from the media element. `preload` indicates
* what should download before the media is interacted with. It can have the following
* values:
* - none: nothing should be downloaded
* - metadata: poster and the first few frames of the media may be downloaded to get
* media dimensions and other metadata
* - auto: allow the media and metadata for the media to be downloaded before
* interaction
*
* @method Html5#preload
* @return {string}
* The value of `preload` from the media element. Will be 'none', 'metadata',
* or 'auto'.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-preload}
*/
'preload',
/**
* Get the value of the `error` from the media element. `error` indicates any
* MediaError that may have occurred during playback. If error returns null there is no
* current error.
*
* @method Html5#error
* @return {MediaError|null}
* The value of `error` from the media element. Will be `MediaError` if there
* is a current error and null otherwise.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-error}
*/
'error',
/**
* Get the value of `seeking` from the media element. `seeking` indicates whether the
* media is currently seeking to a new position or not.
*
* @method Html5#seeking
* @return {boolean}
* - The value of `seeking` from the media element.
* - True indicates that the media is currently seeking to a new position.
* - False indicates that the media is not seeking to a new position at this time.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-seeking}
*/
'seeking',
/**
* Get the value of `seekable` from the media element. `seekable` returns a
* `TimeRange` object indicating ranges of time that can currently be `seeked` to.
*
* @method Html5#seekable
* @return {TimeRange}
* The value of `seekable` from the media element. A `TimeRange` object
* indicating the current ranges of time that can be seeked to.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-seekable}
*/
'seekable',
/**
* Get the value of `ended` from the media element. `ended` indicates whether
* the media has reached the end or not.
*
* @method Html5#ended
* @return {boolean}
* - The value of `ended` from the media element.
* - True indicates that the media has ended.
* - False indicates that the media has not ended.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-ended}
*/
'ended',
/**
* Get the value of `playbackRate` from the media element. `playbackRate` indicates
* the rate at which the media is currently playing back. Examples:
* - if playbackRate is set to 2, media will play twice as fast.
* - if playbackRate is set to 0.5, media will play half as fast.
*
* @method Html5#playbackRate
* @return {number}
* The value of `playbackRate` from the media element. A number indicating
* the current playback speed of the media, where 1 is normal speed.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate}
*/
'playbackRate',
/**
* Get the value of `defaultPlaybackRate` from the media element. `defaultPlaybackRate` indicates
* the rate at which the media is currently playing back. This value will not indicate the current
* `playbackRate` after playback has started, use {@link Html5#playbackRate} for that.
*
* Examples:
* - if defaultPlaybackRate is set to 2, media will play twice as fast.
* - if defaultPlaybackRate is set to 0.5, media will play half as fast.
*
* @method Html5.prototype.defaultPlaybackRate
* @return {number}
* The value of `defaultPlaybackRate` from the media element. A number indicating
* the current playback speed of the media, where 1 is normal speed.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate}
*/
'defaultPlaybackRate',
/**
* Get the value of 'disablePictureInPicture' from the video element.
*
* @method Html5#disablePictureInPicture
* @return {boolean} value
* - The value of `disablePictureInPicture` from the video element.
* - True indicates that the video can't be played in Picture-In-Picture mode
* - False indicates that the video can be played in Picture-In-Picture mode
*
* @see [Spec]{@link https://w3c.github.io/picture-in-picture/#disable-pip}
*/
'disablePictureInPicture',
/**
* Get the value of `played` from the media element. `played` returns a `TimeRange`
* object representing points in the media timeline that have been played.
*
* @method Html5#played
* @return {TimeRange}
* The value of `played` from the media element. A `TimeRange` object indicating
* the ranges of time that have been played.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-played}
*/
'played',
/**
* Get the value of `networkState` from the media element. `networkState` indicates
* the current network state. It returns an enumeration from the following list:
* - 0: NETWORK_EMPTY
* - 1: NETWORK_IDLE
* - 2: NETWORK_LOADING
* - 3: NETWORK_NO_SOURCE
*
* @method Html5#networkState
* @return {number}
* The value of `networkState` from the media element. This will be a number
* from the list in the description.
*
* @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-networkstate}
*/
'networkState',
/**
* Get the value of `readyState` from the media element. `readyState` indicates
* the current state of the media element. It returns an enumeration from the
* following list:
* - 0: HAVE_NOTHING
* - 1: HAVE_METADATA
* - 2: HAVE_CURRENT_DATA
* - 3: HAVE_FUTURE_DATA
* - 4: HAVE_ENOUGH_DATA
*
* @method Html5#readyState
* @return {number}
* The value of `readyState` from the media element. This will be a number
* from the list in the description.
*
* @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#ready-states}
*/
'readyState',
/**
* Get the value of `videoWidth` from the video element. `videoWidth` indicates
* the current width of the video in css pixels.
*
* @method Html5#videoWidth
* @return {number}
* The value of `videoWidth` from the video element. This will be a number
* in css pixels.
*
* @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-video-videowidth}
*/
'videoWidth',
/**
* Get the value of `videoHeight` from the video element. `videoHeight` indicates
* the current height of the video in css pixels.
*
* @method Html5#videoHeight
* @return {number}
* The value of `videoHeight` from the video element. This will be a number
* in css pixels.
*
* @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-video-videowidth}
*/
'videoHeight',
/**
* Get the value of `crossOrigin` from the media element. `crossOrigin` indicates
* to the browser that should sent the cookies along with the requests for the
* different assets/playlists
*
* @method Html5#crossOrigin
* @return {string}
* - anonymous indicates that the media should not sent cookies.
* - use-credentials indicates that the media should sent cookies along the requests.
*
* @see [Spec]{@link https://html.spec.whatwg.org/#attr-media-crossorigin}
*/
'crossOrigin'
].forEach(function(prop) {
Html5.prototype[prop] = function() {
return this.el_[prop];
};
});
// Wrap native properties with a setter in this format:
// set + toTitleCase(name)
// The list is as follows:
// setVolume, setSrc, setPoster, setPreload, setPlaybackRate, setDefaultPlaybackRate,
// setDisablePictureInPicture, setCrossOrigin
[
/**
* Set the value of `volume` on the media element. `volume` indicates the current
* audio level as a percentage in decimal form. This means that 1 is 100%, 0.5 is 50%, and
* so on.
*
* @method Html5#setVolume
* @param {number} percentAsDecimal
* The volume percent as a decimal. Valid range is from 0-1.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-a-volume}
*/
'volume',
/**
* Set the value of `src` on the media element. `src` indicates the current
* {@link Tech~SourceObject} for the media.
*
* @method Html5#setSrc
* @param {Tech~SourceObject} src
* The source object to set as the current source.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-src}
*/
'src',
/**
* Set the value of `poster` on the media element. `poster` is the url to
* an image file that can/will be shown when no media data is available.
*
* @method Html5#setPoster
* @param {string} poster
* The url to an image that should be used as the `poster` for the media
* element.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-poster}
*/
'poster',
/**
* Set the value of `preload` on the media element. `preload` indicates
* what should download before the media is interacted with. It can have the following
* values:
* - none: nothing should be downloaded
* - metadata: poster and the first few frames of the media may be downloaded to get
* media dimensions and other metadata
* - auto: allow the media and metadata for the media to be downloaded before
* interaction
*
* @method Html5#setPreload
* @param {string} preload
* The value of `preload` to set on the media element. Must be 'none', 'metadata',
* or 'auto'.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-preload}
*/
'preload',
/**
* Set the value of `playbackRate` on the media element. `playbackRate` indicates
* the rate at which the media should play back. Examples:
* - if playbackRate is set to 2, media will play twice as fast.
* - if playbackRate is set to 0.5, media will play half as fast.
*
* @method Html5#setPlaybackRate
* @return {number}
* The value of `playbackRate` from the media element. A number indicating
* the current playback speed of the media, where 1 is normal speed.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate}
*/
'playbackRate',
/**
* Set the value of `defaultPlaybackRate` on the media element. `defaultPlaybackRate` indicates
* the rate at which the media should play back upon initial startup. Changing this value
* after a video has started will do nothing. Instead you should used {@link Html5#setPlaybackRate}.
*
* Example Values:
* - if playbackRate is set to 2, media will play twice as fast.
* - if playbackRate is set to 0.5, media will play half as fast.
*
* @method Html5.prototype.setDefaultPlaybackRate
* @return {number}
* The value of `defaultPlaybackRate` from the media element. A number indicating
* the current playback speed of the media, where 1 is normal speed.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultplaybackrate}
*/
'defaultPlaybackRate',
/**
* Prevents the browser from suggesting a Picture-in-Picture context menu
* or to request Picture-in-Picture automatically in some cases.
*
* @method Html5#setDisablePictureInPicture
* @param {boolean} value
* The true value will disable Picture-in-Picture mode.
*
* @see [Spec]{@link https://w3c.github.io/picture-in-picture/#disable-pip}
*/
'disablePictureInPicture',
/**
* Set the value of `crossOrigin` from the media element. `crossOrigin` indicates
* to the browser that should sent the cookies along with the requests for the
* different assets/playlists
*
* @method Html5#setCrossOrigin
* @param {string} crossOrigin
* - anonymous indicates that the media should not sent cookies.
* - use-credentials indicates that the media should sent cookies along the requests.
*
* @see [Spec]{@link https://html.spec.whatwg.org/#attr-media-crossorigin}
*/
'crossOrigin'
].forEach(function(prop) {
Html5.prototype['set' + toTitleCase(prop)] = function(v) {
this.el_[prop] = v;
};
});
// wrap native functions with a function
// The list is as follows:
// pause, load, play
[
/**
* A wrapper around the media elements `pause` function. This will call the `HTML5`
* media elements `pause` function.
*
* @method Html5#pause
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-pause}
*/
'pause',
/**
* A wrapper around the media elements `load` function. This will call the `HTML5`s
* media element `load` function.
*
* @method Html5#load
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-load}
*/
'load',
/**
* A wrapper around the media elements `play` function. This will call the `HTML5`s
* media element `play` function.
*
* @method Html5#play
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-play}
*/
'play'
].forEach(function(prop) {
Html5.prototype[prop] = function() {
return this.el_[prop]();
};
});
Tech.withSourceHandlers(Html5);
/**
* Native source handler for Html5, simply passes the source to the media element.
*
* @property {Tech~SourceObject} source
* The source object
*
* @property {Html5} tech
* The instance of the HTML5 tech.
*/
Html5.nativeSourceHandler = {};
/**
* Check if the media element can play the given mime type.
*
* @param {string} type
* The mimetype to check
*
* @return {string}
* 'probably', 'maybe', or '' (empty string)
*/
Html5.nativeSourceHandler.canPlayType = function(type) {
// IE without MediaPlayer throws an error (#519)
try {
return Html5.TEST_VID.canPlayType(type);
} catch (e) {
return '';
}
};
/**
* Check if the media element can handle a source natively.
*
* @param {Tech~SourceObject} source
* The source object
*
* @param {Object} [options]
* Options to be passed to the tech.
*
* @return {string}
* 'probably', 'maybe', or '' (empty string).
*/
Html5.nativeSourceHandler.canHandleSource = function(source, options) {
// If a type was provided we should rely on that
if (source.type) {
return Html5.nativeSourceHandler.canPlayType(source.type);
// If no type, fall back to checking 'video/[EXTENSION]'
} else if (source.src) {
const ext = Url.getFileExtension(source.src);
return Html5.nativeSourceHandler.canPlayType(`video/${ext}`);
}
return '';
};
/**
* Pass the source to the native media element.
*
* @param {Tech~SourceObject} source
* The source object
*
* @param {Html5} tech
* The instance of the Html5 tech
*
* @param {Object} [options]
* The options to pass to the source
*/
Html5.nativeSourceHandler.handleSource = function(source, tech, options) {
tech.setSrc(source.src);
};
/**
* A noop for the native dispose function, as cleanup is not needed.
*/
Html5.nativeSourceHandler.dispose = function() {};
// Register the native source handler
Html5.registerSourceHandler(Html5.nativeSourceHandler);
Tech.registerTech('Html5', Html5);
export default Html5;