/
mediaelement-and-player.js
4220 lines (3470 loc) · 117 KB
/
mediaelement-and-player.js
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/*!
* MediaElement.js
* HTML5 <video> and <audio> shim and player
* http://mediaelementjs.com/
*
* Creates a JavaScript object that mimics HTML5 MediaElement API
* for browsers that don't understand HTML5 or can't play the provided codec
* Can play MP4 (H.264), Ogg, WebM, FLV, WMV, WMA, ACC, and MP3
*
* Copyright 2010-2012, John Dyer (http://j.hn)
* Dual licensed under the MIT or GPL Version 2 licenses.
*
*/
// Namespace
var mejs = mejs || {};
// version number
mejs.version = '2.7.0';
// player number (for missing, same id attr)
mejs.meIndex = 0;
// media types accepted by plugins
mejs.plugins = {
silverlight: [
{version: [3,0], types: ['video/mp4','video/m4v','video/mov','video/wmv','audio/wma','audio/m4a','audio/mp3','audio/wav','audio/mpeg']}
],
flash: [
{version: [9,0,124], types: ['video/mp4','video/m4v','video/mov','video/flv','video/x-flv','audio/flv','audio/x-flv','audio/mp3','audio/m4a','audio/mpeg']}
//,{version: [12,0], types: ['video/webm']} // for future reference (hopefully!)
],
youtube: [
{version: null, types: ['video/youtube']}
],
vimeo: [
{version: null, types: ['video/vimeo']}
]
};
/*
Utility methods
*/
mejs.Utility = {
encodeUrl: function(url) {
return encodeURIComponent(url); //.replace(/\?/gi,'%3F').replace(/=/gi,'%3D').replace(/&/gi,'%26');
},
escapeHTML: function(s) {
return s.toString().split('&').join('&').split('<').join('<').split('"').join('"');
},
absolutizeUrl: function(url) {
var el = document.createElement('div');
el.innerHTML = '<a href="' + this.escapeHTML(url) + '">x</a>';
return el.firstChild.href;
},
getScriptPath: function(scriptNames) {
var
i = 0,
j,
path = '',
name = '',
script,
scripts = document.getElementsByTagName('script'),
il = scripts.length,
jl = scriptNames.length;
for (; i < il; i++) {
script = scripts[i].src;
for (j = 0; j < jl; j++) {
name = scriptNames[j];
if (script.indexOf(name) > -1) {
path = script.substring(0, script.indexOf(name));
break;
}
}
if (path !== '') {
break;
}
}
return path;
},
secondsToTimeCode: function(time, forceHours, showFrameCount, fps) {
//add framecount
if (typeof showFrameCount == 'undefined') {
showFrameCount=false;
} else if(typeof fps == 'undefined') {
fps = 25;
}
var hours = Math.floor(time / 3600) % 24,
minutes = Math.floor(time / 60) % 60,
seconds = Math.floor(time % 60),
frames = Math.floor(((time % 1)*fps).toFixed(3)),
result =
( (forceHours || hours > 0) ? (hours < 10 ? '0' + hours : hours) + ':' : '')
+ (minutes < 10 ? '0' + minutes : minutes) + ':'
+ (seconds < 10 ? '0' + seconds : seconds)
+ ((showFrameCount) ? ':' + (frames < 10 ? '0' + frames : frames) : '');
return result;
},
timeCodeToSeconds: function(hh_mm_ss_ff, forceHours, showFrameCount, fps){
if (typeof showFrameCount == 'undefined') {
showFrameCount=false;
} else if(typeof fps == 'undefined') {
fps = 25;
}
var tc_array = hh_mm_ss_ff.split(":"),
tc_hh = parseInt(tc_array[0], 10),
tc_mm = parseInt(tc_array[1], 10),
tc_ss = parseInt(tc_array[2], 10),
tc_ff = 0,
tc_in_seconds = 0;
if (showFrameCount) {
tc_ff = parseInt(tc_array[3])/fps;
}
tc_in_seconds = ( tc_hh * 3600 ) + ( tc_mm * 60 ) + tc_ss + tc_ff;
return tc_in_seconds;
},
/* borrowed from SWFObject: http://code.google.com/p/swfobject/source/browse/trunk/swfobject/src/swfobject.js#474 */
removeSwf: function(id) {
var obj = document.getElementById(id);
if (obj && obj.nodeName == "OBJECT") {
if (mejs.MediaFeatures.isIE) {
obj.style.display = "none";
(function(){
if (obj.readyState == 4) {
mejs.Utility.removeObjectInIE(id);
} else {
setTimeout(arguments.callee, 10);
}
})();
} else {
obj.parentNode.removeChild(obj);
}
}
},
removeObjectInIE: function(id) {
var obj = document.getElementById(id);
if (obj) {
for (var i in obj) {
if (typeof obj[i] == "function") {
obj[i] = null;
}
}
obj.parentNode.removeChild(obj);
}
}
};
// Core detector, plugins are added below
mejs.PluginDetector = {
// main public function to test a plug version number PluginDetector.hasPluginVersion('flash',[9,0,125]);
hasPluginVersion: function(plugin, v) {
var pv = this.plugins[plugin];
v[1] = v[1] || 0;
v[2] = v[2] || 0;
return (pv[0] > v[0] || (pv[0] == v[0] && pv[1] > v[1]) || (pv[0] == v[0] && pv[1] == v[1] && pv[2] >= v[2])) ? true : false;
},
// cached values
nav: window.navigator,
ua: window.navigator.userAgent.toLowerCase(),
// stored version numbers
plugins: [],
// runs detectPlugin() and stores the version number
addPlugin: function(p, pluginName, mimeType, activeX, axDetect) {
this.plugins[p] = this.detectPlugin(pluginName, mimeType, activeX, axDetect);
},
// get the version number from the mimetype (all but IE) or ActiveX (IE)
detectPlugin: function(pluginName, mimeType, activeX, axDetect) {
var version = [0,0,0],
description,
i,
ax;
// Firefox, Webkit, Opera
if (typeof(this.nav.plugins) != 'undefined' && typeof this.nav.plugins[pluginName] == 'object') {
description = this.nav.plugins[pluginName].description;
if (description && !(typeof this.nav.mimeTypes != 'undefined' && this.nav.mimeTypes[mimeType] && !this.nav.mimeTypes[mimeType].enabledPlugin)) {
version = description.replace(pluginName, '').replace(/^\s+/,'').replace(/\sr/gi,'.').split('.');
for (i=0; i<version.length; i++) {
version[i] = parseInt(version[i].match(/\d+/), 10);
}
}
// Internet Explorer / ActiveX
} else if (typeof(window.ActiveXObject) != 'undefined') {
try {
ax = new ActiveXObject(activeX);
if (ax) {
version = axDetect(ax);
}
}
catch (e) { }
}
return version;
}
};
// Add Flash detection
mejs.PluginDetector.addPlugin('flash','Shockwave Flash','application/x-shockwave-flash','ShockwaveFlash.ShockwaveFlash', function(ax) {
// adapted from SWFObject
var version = [],
d = ax.GetVariable("$version");
if (d) {
d = d.split(" ")[1].split(",");
version = [parseInt(d[0], 10), parseInt(d[1], 10), parseInt(d[2], 10)];
}
return version;
});
// Add Silverlight detection
mejs.PluginDetector.addPlugin('silverlight','Silverlight Plug-In','application/x-silverlight-2','AgControl.AgControl', function (ax) {
// Silverlight cannot report its version number to IE
// but it does have a isVersionSupported function, so we have to loop through it to get a version number.
// adapted from http://www.silverlightversion.com/
var v = [0,0,0,0],
loopMatch = function(ax, v, i, n) {
while(ax.isVersionSupported(v[0]+ "."+ v[1] + "." + v[2] + "." + v[3])){
v[i]+=n;
}
v[i] -= n;
};
loopMatch(ax, v, 0, 1);
loopMatch(ax, v, 1, 1);
loopMatch(ax, v, 2, 10000); // the third place in the version number is usually 5 digits (4.0.xxxxx)
loopMatch(ax, v, 2, 1000);
loopMatch(ax, v, 2, 100);
loopMatch(ax, v, 2, 10);
loopMatch(ax, v, 2, 1);
loopMatch(ax, v, 3, 1);
return v;
});
// add adobe acrobat
/*
PluginDetector.addPlugin('acrobat','Adobe Acrobat','application/pdf','AcroPDF.PDF', function (ax) {
var version = [],
d = ax.GetVersions().split(',')[0].split('=')[1].split('.');
if (d) {
version = [parseInt(d[0], 10), parseInt(d[1], 10), parseInt(d[2], 10)];
}
return version;
});
*/
// necessary detection (fixes for <IE9)
mejs.MediaFeatures = {
init: function() {
var
t = this,
d = document,
nav = mejs.PluginDetector.nav,
ua = mejs.PluginDetector.ua.toLowerCase(),
i,
v,
html5Elements = ['source','track','audio','video'];
// detect browsers (only the ones that have some kind of quirk we need to work around)
t.isiPad = (ua.match(/ipad/i) !== null);
t.isiPhone = (ua.match(/iphone/i) !== null);
t.isiOS = t.isiPhone || t.isiPad;
t.isAndroid = (ua.match(/android/i) !== null);
t.isBustedAndroid = (ua.match(/android 2\.[12]/) !== null);
t.isIE = (nav.appName.toLowerCase().indexOf("microsoft") != -1);
t.isChrome = (ua.match(/chrome/gi) !== null);
t.isFirefox = (ua.match(/firefox/gi) !== null);
t.isWebkit = (ua.match(/webkit/gi) !== null);
t.isGecko = (ua.match(/gecko/gi) !== null) && !t.isWebkit;
t.isOpera = (ua.match(/opera/gi) !== null);
t.hasTouch = ('ontouchstart' in window);
// create HTML5 media elements for IE before 9, get a <video> element for fullscreen detection
for (i=0; i<html5Elements.length; i++) {
v = document.createElement(html5Elements[i]);
}
t.supportsMediaTag = (typeof v.canPlayType !== 'undefined' || t.isBustedAndroid);
// detect native JavaScript fullscreen (Safari/Firefox only, Chrome still fails)
// iOS
t.hasSemiNativeFullScreen = (typeof v.webkitEnterFullscreen !== 'undefined');
// Webkit/firefox
t.hasWebkitNativeFullScreen = (typeof v.webkitRequestFullScreen !== 'undefined');
t.hasMozNativeFullScreen = (typeof v.mozRequestFullScreen !== 'undefined');
t.hasTrueNativeFullScreen = (t.hasWebkitNativeFullScreen || t.hasMozNativeFullScreen);
t.nativeFullScreenEnabled = t.hasTrueNativeFullScreen;
if (t.hasMozNativeFullScreen) {
t.nativeFullScreenEnabled = v.mozFullScreenEnabled;
}
if (this.isChrome) {
t.hasSemiNativeFullScreen = false;
}
if (t.hasTrueNativeFullScreen) {
t.fullScreenEventName = (t.hasWebkitNativeFullScreen) ? 'webkitfullscreenchange' : 'mozfullscreenchange';
t.isFullScreen = function() {
if (v.mozRequestFullScreen) {
return d.mozFullScreen;
} else if (v.webkitRequestFullScreen) {
return d.webkitIsFullScreen;
}
}
t.requestFullScreen = function(el) {
if (t.hasWebkitNativeFullScreen) {
el.webkitRequestFullScreen();
} else if (t.hasMozNativeFullScreen) {
el.mozRequestFullScreen();
}
}
t.cancelFullScreen = function() {
if (t.hasWebkitNativeFullScreen) {
document.webkitCancelFullScreen();
} else if (t.hasMozNativeFullScreen) {
document.mozCancelFullScreen();
}
}
}
// OS X 10.5 can't do this even if it says it can :(
if (t.hasSemiNativeFullScreen && ua.match(/mac os x 10_5/i)) {
t.hasNativeFullScreen = false;
t.hasSemiNativeFullScreen = false;
}
}
};
mejs.MediaFeatures.init();
/*
extension methods to <video> or <audio> object to bring it into parity with PluginMediaElement (see below)
*/
mejs.HtmlMediaElement = {
pluginType: 'native',
isFullScreen: false,
setCurrentTime: function (time) {
this.currentTime = time;
},
setMuted: function (muted) {
this.muted = muted;
},
setVolume: function (volume) {
this.volume = volume;
},
// for parity with the plugin versions
stop: function () {
this.pause();
},
// This can be a url string
// or an array [{src:'file.mp4',type:'video/mp4'},{src:'file.webm',type:'video/webm'}]
setSrc: function (url) {
// Fix for IE9 which can't set .src when there are <source> elements. Awesome, right?
var
existingSources = this.getElementsByTagName('source');
while (existingSources.length > 0){
this.removeChild(existingSources[0]);
}
if (typeof url == 'string') {
this.src = url;
} else {
var i, media;
for (i=0; i<url.length; i++) {
media = url[i];
if (this.canPlayType(media.type)) {
this.src = media.src;
}
}
}
},
setVideoSize: function (width, height) {
this.width = width;
this.height = height;
}
};
/*
Mimics the <video/audio> element by calling Flash's External Interface or Silverlights [ScriptableMember]
*/
mejs.PluginMediaElement = function (pluginid, pluginType, mediaUrl) {
this.id = pluginid;
this.pluginType = pluginType;
this.src = mediaUrl;
this.events = {};
};
// JavaScript values and ExternalInterface methods that match HTML5 video properties methods
// http://www.adobe.com/livedocs/flash/9.0/ActionScriptLangRefV3/fl/video/FLVPlayback.html
// http://www.whatwg.org/specs/web-apps/current-work/multipage/video.html
mejs.PluginMediaElement.prototype = {
// special
pluginElement: null,
pluginType: '',
isFullScreen: false,
// not implemented :(
playbackRate: -1,
defaultPlaybackRate: -1,
seekable: [],
played: [],
// HTML5 read-only properties
paused: true,
ended: false,
seeking: false,
duration: 0,
error: null,
tagName: '',
// HTML5 get/set properties, but only set (updated by event handlers)
muted: false,
volume: 1,
currentTime: 0,
// HTML5 methods
play: function () {
if (this.pluginApi != null) {
if (this.pluginType == 'youtube') {
this.pluginApi.playVideo();
} else {
this.pluginApi.playMedia();
}
this.paused = false;
}
},
load: function () {
if (this.pluginApi != null) {
if (this.pluginType == 'youtube') {
} else {
this.pluginApi.loadMedia();
}
this.paused = false;
}
},
pause: function () {
if (this.pluginApi != null) {
if (this.pluginType == 'youtube') {
this.pluginApi.pauseVideo();
} else {
this.pluginApi.pauseMedia();
}
this.paused = true;
}
},
stop: function () {
if (this.pluginApi != null) {
if (this.pluginType == 'youtube') {
this.pluginApi.stopVideo();
} else {
this.pluginApi.stopMedia();
}
this.paused = true;
}
},
canPlayType: function(type) {
var i,
j,
pluginInfo,
pluginVersions = mejs.plugins[this.pluginType];
for (i=0; i<pluginVersions.length; i++) {
pluginInfo = pluginVersions[i];
// test if user has the correct plugin version
if (mejs.PluginDetector.hasPluginVersion(this.pluginType, pluginInfo.version)) {
// test for plugin playback types
for (j=0; j<pluginInfo.types.length; j++) {
// find plugin that can play the type
if (type == pluginInfo.types[j]) {
return true;
}
}
}
}
return false;
},
positionFullscreenButton: function(x,y,visibleAndAbove) {
if (this.pluginApi != null && this.pluginApi.positionFullscreenButton) {
this.pluginApi.positionFullscreenButton(x,y,visibleAndAbove);
}
},
hideFullscreenButton: function() {
if (this.pluginApi != null && this.pluginApi.hideFullscreenButton) {
this.pluginApi.hideFullscreenButton();
}
},
// custom methods since not all JavaScript implementations support get/set
// This can be a url string
// or an array [{src:'file.mp4',type:'video/mp4'},{src:'file.webm',type:'video/webm'}]
setSrc: function (url) {
if (typeof url == 'string') {
this.pluginApi.setSrc(mejs.Utility.absolutizeUrl(url));
this.src = mejs.Utility.absolutizeUrl(url);
} else {
var i, media;
for (i=0; i<url.length; i++) {
media = url[i];
if (this.canPlayType(media.type)) {
this.pluginApi.setSrc(mejs.Utility.absolutizeUrl(media.src));
this.src = mejs.Utility.absolutizeUrl(url);
}
}
}
},
setCurrentTime: function (time) {
if (this.pluginApi != null) {
if (this.pluginType == 'youtube') {
this.pluginApi.seekTo(time);
} else {
this.pluginApi.setCurrentTime(time);
}
this.currentTime = time;
}
},
setVolume: function (volume) {
if (this.pluginApi != null) {
// same on YouTube and MEjs
if (this.pluginType == 'youtube') {
this.pluginApi.setVolume(volume * 100);
} else {
this.pluginApi.setVolume(volume);
}
this.volume = volume;
}
},
setMuted: function (muted) {
if (this.pluginApi != null) {
if (this.pluginType == 'youtube') {
if (muted) {
this.pluginApi.mute();
} else {
this.pluginApi.unMute();
}
this.muted = muted;
this.dispatchEvent('volumechange');
} else {
this.pluginApi.setMuted(muted);
}
this.muted = muted;
}
},
// additional non-HTML5 methods
setVideoSize: function (width, height) {
//if (this.pluginType == 'flash' || this.pluginType == 'silverlight') {
if ( this.pluginElement.style) {
this.pluginElement.style.width = width + 'px';
this.pluginElement.style.height = height + 'px';
}
if (this.pluginApi != null && this.pluginApi.setVideoSize) {
this.pluginApi.setVideoSize(width, height);
}
//}
},
setFullscreen: function (fullscreen) {
if (this.pluginApi != null && this.pluginApi.setFullscreen) {
this.pluginApi.setFullscreen(fullscreen);
}
},
enterFullScreen: function() {
if (this.pluginApi != null && this.pluginApi.setFullscreen) {
this.setFullscreen(true);
}
},
exitFullScreen: function() {
if (this.pluginApi != null && this.pluginApi.setFullscreen) {
this.setFullscreen(false);
}
},
// start: fake events
addEventListener: function (eventName, callback, bubble) {
this.events[eventName] = this.events[eventName] || [];
this.events[eventName].push(callback);
},
removeEventListener: function (eventName, callback) {
if (!eventName) { this.events = {}; return true; }
var callbacks = this.events[eventName];
if (!callbacks) return true;
if (!callback) { this.events[eventName] = []; return true; }
for (i = 0; i < callbacks.length; i++) {
if (callbacks[i] === callback) {
this.events[eventName].splice(i, 1);
return true;
}
}
return false;
},
dispatchEvent: function (eventName) {
var i,
args,
callbacks = this.events[eventName];
if (callbacks) {
args = Array.prototype.slice.call(arguments, 1);
for (i = 0; i < callbacks.length; i++) {
callbacks[i].apply(null, args);
}
}
},
// end: fake events
// fake DOM attribute methods
attributes: {},
hasAttribute: function(name){
return (name in this.attributes);
},
removeAttribute: function(name){
delete this.attributes[name];
},
getAttribute: function(name){
if (this.hasAttribute(name)) {
return this.attributes[name];
}
return '';
},
setAttribute: function(name, value){
this.attributes[name] = value;
},
remove: function() {
mejs.Utility.removeSwf(this.pluginElement.id);
}
};
// Handles calls from Flash/Silverlight and reports them as native <video/audio> events and properties
mejs.MediaPluginBridge = {
pluginMediaElements:{},
htmlMediaElements:{},
registerPluginElement: function (id, pluginMediaElement, htmlMediaElement) {
this.pluginMediaElements[id] = pluginMediaElement;
this.htmlMediaElements[id] = htmlMediaElement;
},
// when Flash/Silverlight is ready, it calls out to this method
initPlugin: function (id) {
var pluginMediaElement = this.pluginMediaElements[id],
htmlMediaElement = this.htmlMediaElements[id];
if (pluginMediaElement) {
// find the javascript bridge
switch (pluginMediaElement.pluginType) {
case "flash":
pluginMediaElement.pluginElement = pluginMediaElement.pluginApi = document.getElementById(id);
break;
case "silverlight":
pluginMediaElement.pluginElement = document.getElementById(pluginMediaElement.id);
pluginMediaElement.pluginApi = pluginMediaElement.pluginElement.Content.MediaElementJS;
break;
}
if (pluginMediaElement.pluginApi != null && pluginMediaElement.success) {
pluginMediaElement.success(pluginMediaElement, htmlMediaElement);
}
}
},
// receives events from Flash/Silverlight and sends them out as HTML5 media events
// http://www.whatwg.org/specs/web-apps/current-work/multipage/video.html
fireEvent: function (id, eventName, values) {
var
e,
i,
bufferedTime,
pluginMediaElement = this.pluginMediaElements[id];
pluginMediaElement.ended = false;
pluginMediaElement.paused = true;
// fake event object to mimic real HTML media event.
e = {
type: eventName,
target: pluginMediaElement
};
// attach all values to element and event object
for (i in values) {
pluginMediaElement[i] = values[i];
e[i] = values[i];
}
// fake the newer W3C buffered TimeRange (loaded and total have been removed)
bufferedTime = values.bufferedTime || 0;
e.target.buffered = e.buffered = {
start: function(index) {
return 0;
},
end: function (index) {
return bufferedTime;
},
length: 1
};
pluginMediaElement.dispatchEvent(e.type, e);
}
};
/*
Default options
*/
mejs.MediaElementDefaults = {
// allows testing on HTML5, flash, silverlight
// auto: attempts to detect what the browser can do
// native: forces HTML5 playback
// shim: disallows HTML5, will attempt either Flash or Silverlight
// none: forces fallback view
mode: 'auto',
// remove or reorder to change plugin priority and availability
plugins: ['flash','silverlight','youtube','vimeo'],
// shows debug errors on screen
enablePluginDebug: false,
// overrides the type specified, useful for dynamic instantiation
type: '',
// path to Flash and Silverlight plugins
pluginPath: mejs.Utility.getScriptPath(['mediaelement.js','mediaelement.min.js','mediaelement-and-player.js','mediaelement-and-player.min.js']),
// name of flash file
flashName: 'flashmediaelement.swf',
// turns on the smoothing filter in Flash
enablePluginSmoothing: false,
// name of silverlight file
silverlightName: 'silverlightmediaelement.xap',
// default if the <video width> is not specified
defaultVideoWidth: 480,
// default if the <video height> is not specified
defaultVideoHeight: 270,
// overrides <video width>
pluginWidth: -1,
// overrides <video height>
pluginHeight: -1,
// additional plugin variables in 'key=value' form
pluginVars: [],
// rate in milliseconds for Flash and Silverlight to fire the timeupdate event
// larger number is less accurate, but less strain on plugin->JavaScript bridge
timerRate: 250,
// initial volume for player
startVolume: 0.8,
success: function () { },
error: function () { }
};
/*
Determines if a browser supports the <video> or <audio> element
and returns either the native element or a Flash/Silverlight version that
mimics HTML5 MediaElement
*/
mejs.MediaElement = function (el, o) {
return mejs.HtmlMediaElementShim.create(el,o);
};
mejs.HtmlMediaElementShim = {
create: function(el, o) {
var
options = mejs.MediaElementDefaults,
htmlMediaElement = (typeof(el) == 'string') ? document.getElementById(el) : el,
tagName = htmlMediaElement.tagName.toLowerCase(),
isMediaTag = (tagName === 'audio' || tagName === 'video'),
src = (isMediaTag) ? htmlMediaElement.getAttribute('src') : htmlMediaElement.getAttribute('href'),
poster = htmlMediaElement.getAttribute('poster'),
autoplay = htmlMediaElement.getAttribute('autoplay'),
preload = htmlMediaElement.getAttribute('preload'),
controls = htmlMediaElement.getAttribute('controls'),
playback,
prop;
// extend options
for (prop in o) {
options[prop] = o[prop];
}
// clean up attributes
src = (typeof src == 'undefined' || src === null || src == '') ? null : src;
poster = (typeof poster == 'undefined' || poster === null) ? '' : poster;
preload = (typeof preload == 'undefined' || preload === null || preload === 'false') ? 'none' : preload;
autoplay = !(typeof autoplay == 'undefined' || autoplay === null || autoplay === 'false');
controls = !(typeof controls == 'undefined' || controls === null || controls === 'false');
// test for HTML5 and plugin capabilities
playback = this.determinePlayback(htmlMediaElement, options, mejs.MediaFeatures.supportsMediaTag, isMediaTag, src);
playback.url = (playback.url !== null) ? mejs.Utility.absolutizeUrl(playback.url) : '';
if (playback.method == 'native') {
// second fix for android
if (mejs.MediaFeatures.isBustedAndroid) {
htmlMediaElement.src = playback.url;
htmlMediaElement.addEventListener('click', function() {
htmlMediaElement.play();
}, false);
}
// add methods to native HTMLMediaElement
return this.updateNative(playback, options, autoplay, preload);
} else if (playback.method !== '') {
// create plugin to mimic HTMLMediaElement
return this.createPlugin( playback, options, poster, autoplay, preload, controls);
} else {
// boo, no HTML5, no Flash, no Silverlight.
this.createErrorMessage( playback, options, poster );
return this;
}
},
determinePlayback: function(htmlMediaElement, options, supportsMediaTag, isMediaTag, src) {
var
mediaFiles = [],
i,
j,
k,
l,
n,
type,
result = { method: '', url: '', htmlMediaElement: htmlMediaElement, isVideo: (htmlMediaElement.tagName.toLowerCase() != 'audio')},
pluginName,
pluginVersions,
pluginInfo,
dummy;
// STEP 1: Get URL and type from <video src> or <source src>
// supplied type overrides <video type> and <source type>
if (typeof options.type != 'undefined' && options.type !== '') {
// accept either string or array of types
if (typeof options.type == 'string') {
mediaFiles.push({type:options.type, url:src});
} else {
for (i=0; i<options.type.length; i++) {
mediaFiles.push({type:options.type[i], url:src});
}
}
// test for src attribute first
} else if (src !== null) {
type = this.formatType(src, htmlMediaElement.getAttribute('type'));
mediaFiles.push({type:type, url:src});
// then test for <source> elements
} else {
// test <source> types to see if they are usable
for (i = 0; i < htmlMediaElement.childNodes.length; i++) {
n = htmlMediaElement.childNodes[i];
if (n.nodeType == 1 && n.tagName.toLowerCase() == 'source') {
src = n.getAttribute('src');
type = this.formatType(src, n.getAttribute('type'));
mediaFiles.push({type:type, url:src});
}
}
}
// in the case of dynamicly created players
// check for audio types
if (!isMediaTag && mediaFiles.length > 0 && mediaFiles[0].url !== null && this.getTypeFromFile(mediaFiles[0].url).indexOf('audio') > -1) {
result.isVideo = false;
}
// STEP 2: Test for playback method
// special case for Android which sadly doesn't implement the canPlayType function (always returns '')
if (mejs.MediaFeatures.isBustedAndroid) {
htmlMediaElement.canPlayType = function(type) {
return (type.match(/video\/(mp4|m4v)/gi) !== null) ? 'maybe' : '';
};
}
// test for native playback first
if (supportsMediaTag && (options.mode === 'auto' || options.mode === 'native')) {
if (!isMediaTag) {
// create a real HTML5 Media Element
dummy = document.createElement( result.isVideo ? 'video' : 'audio');
htmlMediaElement.parentNode.insertBefore(dummy, htmlMediaElement);
htmlMediaElement.style.display = 'none';
// use this one from now on
result.htmlMediaElement = htmlMediaElement = dummy;
}
for (i=0; i<mediaFiles.length; i++) {
// normal check
if (htmlMediaElement.canPlayType(mediaFiles[i].type).replace(/no/, '') !== ''
// special case for Mac/Safari 5.0.3 which answers '' to canPlayType('audio/mp3') but 'maybe' to canPlayType('audio/mpeg')
|| htmlMediaElement.canPlayType(mediaFiles[i].type.replace(/mp3/,'mpeg')).replace(/no/, '') !== '') {
result.method = 'native';
result.url = mediaFiles[i].url;
break;
}
}
if (result.method === 'native') {
if (result.url !== null) {
htmlMediaElement.src = result.url;
}
return result;
}
}
// if native playback didn't work, then test plugins
if (options.mode === 'auto' || options.mode === 'shim') {
for (i=0; i<mediaFiles.length; i++) {
type = mediaFiles[i].type;
// test all plugins in order of preference [silverlight, flash]
for (j=0; j<options.plugins.length; j++) {
pluginName = options.plugins[j];
// test version of plugin (for future features)
pluginVersions = mejs.plugins[pluginName];
for (k=0; k<pluginVersions.length; k++) {
pluginInfo = pluginVersions[k];
// test if user has the correct plugin version
// for youtube/vimeo
if (pluginInfo.version == null ||
mejs.PluginDetector.hasPluginVersion(pluginName, pluginInfo.version)) {
// test for plugin playback types
for (l=0; l<pluginInfo.types.length; l++) {
// find plugin that can play the type
if (type == pluginInfo.types[l]) {
result.method = pluginName;
result.url = mediaFiles[i].url;
return result;
}
}
}
}
}
}
}
// what if there's nothing to play? just grab the first available