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<h1 class="page-title">Source: flash-media-source.js</h1>
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<pre class="prettyprint source linenums"><code>/**
* @file flash-media-source.js
*/
import document from 'global/document';
import videojs from 'video.js';
import FlashSourceBuffer from './flash-source-buffer';
import FlashConstants from './flash-constants';
import {parseContentType} from './codec-utils';
/**
* A flash implmentation of HTML MediaSources and a polyfill
* for browsers that don't support native or HTML MediaSources..
*
* @link https://developer.mozilla.org/en-US/docs/Web/API/MediaSource
* @class FlashMediaSource
* @extends videojs.EventTarget
*/
export default class FlashMediaSource extends videojs.EventTarget {
constructor() {
super();
this.sourceBuffers = [];
this.readyState = 'closed';
this.on(['sourceopen', 'webkitsourceopen'], (event) => {
// find the swf where we will push media data
this.swfObj = document.getElementById(event.swfId);
this.player_ = videojs(this.swfObj.parentNode);
this.tech_ = this.swfObj.tech;
this.readyState = 'open';
this.tech_.on('seeking', () => {
let i = this.sourceBuffers.length;
while (i--) {
this.sourceBuffers[i].abort();
}
});
// trigger load events
if (this.swfObj) {
this.swfObj.vjs_load();
}
});
}
/**
* We have this function so that the html and flash interfaces
* are the same.
*
* @private
*/
addSeekableRange_() {
// intentional no-op
}
/**
* Create a new flash source buffer and add it to our flash media source.
*
* @link https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/addSourceBuffer
* @param {String} type the content-type of the source
* @return {Object} the flash source buffer
*/
addSourceBuffer(type) {
let parsedType = parseContentType(type);
let sourceBuffer;
// if this is an FLV type, we'll push data to flash
if (parsedType.type === 'video/mp2t' || parsedType.type === 'audio/mp2t') {
// Flash source buffers
sourceBuffer = new FlashSourceBuffer(this);
} else {
throw new Error('NotSupportedError (Video.js)');
}
this.sourceBuffers.push(sourceBuffer);
return sourceBuffer;
}
/**
* Signals the end of the stream.
*
* @link https://w3c.github.io/media-source/#widl-MediaSource-endOfStream-void-EndOfStreamError-error
* @param {String=} error Signals that a playback error
* has occurred. If specified, it must be either "network" or
* "decode".
*/
endOfStream(error) {
if (error === 'network') {
// MEDIA_ERR_NETWORK
this.tech_.error(2);
} else if (error === 'decode') {
// MEDIA_ERR_DECODE
this.tech_.error(3);
}
if (this.readyState !== 'ended') {
this.readyState = 'ended';
this.swfObj.vjs_endOfStream();
}
}
}
/**
* Set or return the presentation duration.
*
* @param {Double} value the duration of the media in seconds
* @param {Double} the current presentation duration
* @link http://www.w3.org/TR/media-source/#widl-MediaSource-duration
*/
try {
Object.defineProperty(FlashMediaSource.prototype, 'duration', {
/**
* Return the presentation duration.
*
* @return {Double} the duration of the media in seconds
* @link http://www.w3.org/TR/media-source/#widl-MediaSource-duration
*/
get() {
if (!this.swfObj) {
return NaN;
}
// get the current duration from the SWF
return this.swfObj.vjs_getProperty('duration');
},
/**
* Set the presentation duration.
*
* @param {Double} value the duration of the media in seconds
* @return {Double} the duration of the media in seconds
* @link http://www.w3.org/TR/media-source/#widl-MediaSource-duration
*/
set(value) {
let i;
let oldDuration = this.swfObj.vjs_getProperty('duration');
this.swfObj.vjs_setProperty('duration', value);
if (value < oldDuration) {
// In MSE, this triggers the range removal algorithm which causes
// an update to occur
for (i = 0; i < this.sourceBuffers.length; i++) {
this.sourceBuffers[i].remove(value, oldDuration);
}
}
return value;
}
});
} catch (e) {
// IE8 throws if defineProperty is called on a non-DOM node. We
// don't support IE8 but we shouldn't throw an error if loaded
// there.
FlashMediaSource.prototype.duration = NaN;
}
for (let property in FlashConstants) {
FlashMediaSource[property] = FlashConstants[property];
}
</code></pre>
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<h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><li><a href="FlashMediaSource.html">FlashMediaSource</a></li><li><a href="FlashSourceBuffer.html">FlashSourceBuffer</a></li><li><a href="HtmlMediaSource.html">HtmlMediaSource</a></li><li><a href="MessageHandlers.html">MessageHandlers</a></li><li><a href="VirtualSourceBuffer.html">VirtualSourceBuffer</a></li></ul><h3>Global</h3><ul><li><a href="global.html#abort">abort</a></li><li><a href="global.html#addSourceBuffer">addSourceBuffer</a></li><li><a href="global.html#appendBuffer">appendBuffer</a></li><li><a href="global.html#appendGopInfo_">appendGopInfo_</a></li><li><a href="global.html#endOfStream">endOfStream</a></li><li><a href="global.html#FlashTransmuxerWorker">FlashTransmuxerWorker</a></li><li><a href="global.html#get">get</a></li><li><a href="global.html#gopsSafeToAlignWith">gopsSafeToAlignWith</a></li><li><a href="global.html#MediaSource">MediaSource</a></li><li><a href="global.html#open">open</a></li><li><a href="global.html#remove">remove</a></li><li><a href="global.html#removeGopBuffer">removeGopBuffer</a></li><li><a href="global.html#set">set</a></li><li><a href="global.html#supportsNativeMediaSources">supportsNativeMediaSources</a></li><li><a href="global.html#TransmuxerWorker">TransmuxerWorker</a></li><li><a href="global.html#updateGopBuffer">updateGopBuffer</a></li><li><a href="global.html#URL">URL</a></li></ul>
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