mediaelement-native-fix.js
4.29 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
webshims.register('mediaelement-native-fix', function($, webshims, window, document, undefined){
var support = webshims.support;
var fixBuffered = (function(){
if(support.videoBuffered){return $.noop;}
var getBufferedData = function(elem){
var data = webshims.data(elem, 'mediaelementBuffered');
if(!data){
data = {
buffered: {
start: function(index){
if(index >= data.buffered.length){
webshims.error('buffered index size error');
return;
}
return 0;
},
end: function(index){
if(index >= data.buffered.length){
webshims.error('buffered index size error');
return;
}
return data.loaded;
},
length: 0
},
loaded: 0
};
webshims.data(elem, 'mediaelementBuffered', data);
}
return data;
};
var loadProgessListener = function(e){
e = e.originalEvent;
if(!e || !('lengthComputable' in e)){return;}
var data = webshims.data(e.target, 'mediaelement');
if(data && data.isActive != 'html5'){return;}
if(e.lengthComputable && 'loaded' in e){
var duration = e.target.duration;
var bufferedData = getBufferedData(e.target);
bufferedData.loaded = (duration) ? e.loaded / e.total * duration : 0;
if(bufferedData.loaded){
bufferedData.buffered.length = 1;
}
if(e.type == 'load'){
$(e.target).triggerHandler('progress');
}
}
};
var removeProgress = function(e){
var data = getBufferedData(e.target);
data.buffered.length = 0;
data.loaded = 0;
};
['audio', 'video'].forEach(function(nodeName){
var sup = webshims.defineNodeNameProperty(nodeName, 'buffered', {
prop: {
get: function(){
var data = webshims.data(this, 'mediaelement');
if(data && data.isActive == 'flash' && sup.prop._supget){
sup.prop._supget.apply(this);
} else {
return getBufferedData(this).buffered;
}
}
}
});
});
return function(){
$(this)
.off('load progress', loadProgessListener)
.off('emptied', removeProgress)
.on('load progress', loadProgessListener)
.on('emptied', removeProgress)
;
};
})();
(function(){
var videoElem = document.createElement('video');
if( !('preload' in videoElem) && ('autobuffer' in videoElem)){
var noBufferProps = {
metadata: 1,
none: 1
};
webshims.onNodeNamesPropertyModify(['audio', 'video'], ['preload'], {
set: function(value, boolValue, curType){
if(noBufferProps[value] || curType == 'removeAttr'){
this.autobuffer = false;
} else if( !(webshims.data(this, 'mediaelement') || {}).isActive == 'html5') {
this.autobuffer = true;
}
},
initAttr: true
});
}
})();
var fixProgressEvent = (function(){
if(support.mediaDefaultMuted){return $.noop;}
return function(){
if($.data(this, 'fixedMediaProgress')){return;}
var bufferTimer;
var lastBuffered;
var elem = this;
var getBufferedString = function(){
var buffered = $.prop(elem, 'buffered');
if(!buffered){return;}
var bufferString = "";
for(var i = 0, len = buffered.length; i < len;i++){
bufferString += buffered.end(i);
}
return bufferString;
};
var testBuffer = function(){
var buffered = getBufferedString();
if(buffered != lastBuffered){
lastBuffered = buffered;
webshims.error('needed to trigger progress manually');
$(elem).triggerHandler('progress');
}
};
$(this)
.data('fixedMediaProgress', true)
.on({
'play loadstart progress': function(e){
if(e.type == 'progress'){
lastBuffered = getBufferedString(this);
}
clearTimeout(bufferTimer);
bufferTimer = setTimeout(testBuffer, 800);
},
'emptied stalled mediaerror abort suspend': function(e){
if(e.type == 'emptied'){
lastBuffered = false;
}
clearTimeout(bufferTimer);
}
})
;
if('ActiveXObject' in window && $.prop(this, 'paused') && !$.prop(this, 'readyState') && $(this).is('audio[preload="none"][controls]:not([autoplay],.nonnative-api-active)')){
$(this).prop('preload', 'metadata').mediaLoad();
}
};
})();
webshims.addReady(function(context, insertedElement){
$('video, audio', context)
.add(insertedElement.filter('video, audio'))
.each(fixBuffered)
.each(fixProgressEvent)
;
});
});