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cleanup getVideoFormat and getVideoInfo

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rolux 2013-07-10 01:32:08 +02:00
parent b0f9558845
commit 564603a20e
1 changed files with 17 additions and 21 deletions
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38
source/Ox/js/Video.js
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@ -2,46 +2,44 @@
/*@
Ox.getVideoFormat <f> Get supported video formats
(formats) -> <a> of supported formats
formats <a> list of available formats
(formats) -> <a> List of supported formats
formats <a> List of potential formats
@*/
Ox.getVideoFormat = function(formats) {
var aliases = {
'mp4': 'h264',
'm4v': 'h264',
'ogv': 'ogg'
mp4: 'h264',
m4v: 'h264',
ogv: 'ogg'
},
format,
tests = {
'h264': 'video/mp4; codecs="avc1.42E01E, mp4a.40.2"',
'ogg': 'video/ogg; codecs="theora, vorbis"',
'webm': 'video/webm; codecs="vp8, vorbis"'
h264: 'video/mp4; codecs="avc1.42E01E, mp4a.40.2"',
ogg: 'video/ogg; codecs="theora, vorbis"',
webm: 'video/webm; codecs="vp8, vorbis"'
},
userAgent = navigator.userAgent.toLowerCase(),
video = document.createElement('video');
Ox.forEach(formats, function(f) {
var alias = aliases[f] || f;
if (!!(video.canPlayType && video.canPlayType(tests[alias]).replace('no', ''))) {
video = document.createElement('video'),
videoFormat;
Ox.forEach(formats, function(format) {
var alias = aliases[format] || format;
if (video.canPlayType && video.canPlayType(tests[alias]).replace('no', '')) {
// disable WebM on Safari/Perian, seeking does not work
if (!(
alias == 'webm' && /safari/.test(userAgent)
&& !/chrome/.test(userAgent) && !/linux/.test(userAgent)
)) {
format = f;
videoFormat = format;
return false; // break
}
}
});
return format;
return videoFormat;
};
/*@
Ox.getVideoInfo <f>
url <s> video url
callback <f> gets called with object containing duration, width, height
@*/
Ox.getVideoInfo = Ox.queue(function(url, callback) {
var video = document.createElement('video');
video.addEventListener('loadedmetadata', function(event) {
@ -51,11 +49,9 @@ Ox.getVideoInfo = Ox.queue(function(url, callback) {
height: this.videoHeight,
};
this.src = '';
callback(info);
video = null;
callback(info);
});
video.preload = 'metadata';
video.src = url;
}, {
maxThreads: 4
});
}, 4);