oxjs/source/Ox.UI/js/Video/VideoElement.js

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'use strict';
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/*@
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Ox.VideoElement <f> VideoElement Object
options <o> Options object
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autoplay <b|false> autoplay
items <a|[]> array of objects with src,in,out,duration
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look <b|false> loop playback
self <o> Shared private variable
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([options[, self]]) -> <o:Ox.Element> VideoElement Object
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loadedmetadata <!> loadedmetadata
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itemchange <!> itemchange
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seeked <!> seeked
seeking <!> seeking
sizechange <!> sizechange
ended <!> ended
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@*/
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Ox.VideoElement = function(options, self) {
self = self || {};
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var that = Ox.Element({}, self)
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.defaults({
autoplay: false,
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loop: false,
items: []
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})
.options(options || {})
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.update({
items: function() {
self.loadedMetadata = false;
loadItems(function() {
var update = true;
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if (self.currentItem >= self.numberOfItems) {
self.currentItem = 0;
}
if (!self.numberOfItems) {
self.video.src = '';
that.triggerEvent('durationchange', {
duration: that.duration()
});
} else {
if (self.currentItemId != self.items[self.currentItem].id) {
// check if current item is in new items
self.items.some(function(item, i) {
if (item.id == self.currentItemId) {
self.currentItem = i;
loadNextVideo();
update = false;
return true;
}
});
if (update) {
self.currentItem = 0;
self.currentItemId = self.items[self.currentItem].id;
setCurrentVideo();
}
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}
onLoadedMetadata(self.$video, function() {
that.triggerEvent('seeked');
that.triggerEvent('durationchange', {
duration: that.duration()
});
});
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}
});
}
})
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.css({width: '100%', height: '100%'});
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Ox.Log('Video', 'VIDEO ELEMENT OPTIONS', self.options);
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self.currentItem = 0;
self.currentTime = 0;
self.currentVideo = 0;
self.loadedMetadata = false;
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self.paused = true;
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self.seeking = false;
self.$videos = [getVideo(), getVideo()];
self.$video = self.$videos[self.currentVideo];
self.video = self.$video[0];
self.$brightness = $('<div>').css({
width: '100%',
height: '100%',
background: 'rgb(0, 0, 0)',
opacity: 0
})
.appendTo(that);
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loadItems(function() {
setCurrentItem(0);
self.options.autoplay && play();
onLoadedMetadata(self.$video, function() {
that.triggerEvent('loadedmetadata');
});
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});
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function getCurrentTime() {
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var item = self.items[self.currentItem];
return self.seeking
? self.currentTime
: item ? item.position + self.video.currentTime - item['in'] : 0;
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}
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function getset(key, value) {
var ret;
if (Ox.isUndefined(value)) {
ret = self.video[key];
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} else {
self.video[key] = value;
ret = that;
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}
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return ret;
}
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function getVideo() {
return $('<video>')
.css({position: 'absolute'})
.on({
ended: function() {
if (self.video == this) {
setCurrentItem(self.currentItem + 1);
}
},
loadedmetadata: function() {
// metadata loaded in loadItems
},
progress: function() {
// not implemented
},
seeked: function() {
if (self.video == this) {
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that.triggerEvent('seeked');
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self.seeking = false;
}
},
seeking: function() {
//seeking event triggered in setCurrentTime
},
stop: function() {
if (self.video == this) {
self.video.pause();
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that.triggerEvent('ended');
}
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},
timeupdate: function() {
if (self.video == this) {
if (self.items[self.currentItem]
&& self.items[self.currentItem].out
&& this.currentTime >= self.items[self.currentItem].out) {
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setCurrentItem(self.currentItem + 1);
}
}
}
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})
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.attr({
preload: 'auto'
})
.hide()
.appendTo(that);
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}
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function loadItems(callback) {
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var currentTime = 0, i = 0,
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items = self.options.items.map(function(item) {
return Ox.isObject(item) ? Ox.clone(item, true) : {src: item};
});
next();
function getId(item) {
return item.id || item.src + '/' + item['in'] + '-' + item.out;
}
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function next() {
var item;
if (i < items.length) {
item = items[i];
item['in'] = item['in'] || 0;
item.position = currentTime;
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if (item.out) {
item.duration = item.out - item['in'];
}
if (item.duration) {
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if (!item.out) {
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item.out = item.duration - item['in'];
}
currentTime += item.duration;
item.id = getId(item);
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i++;
next()
} else {
Ox.getVideoInfo(item.src, function(info) {
item.duration = info.duration;
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if (!item.out) {
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item.out = item['in'] + item.duration;
}
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currentTime += item.duration;
item.id = getId(item);
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i++;
next();
});
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}
} else {
self.loadedMetadata = true;
self.items = items;
self.numberOfItems = self.items.length;
callback && callback();
}
}
}
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function loadNextVideo() {
if (self.numberOfItems <= 1) {
return;
}
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var item = self.items[self.currentItem],
nextItem = Ox.mod(self.currentItem + 1, self.numberOfItems),
next = self.items[nextItem],
$nextVideo = self.$videos[Ox.mod(self.currentVideo + 1, self.$videos.length)],
nextVideo = $nextVideo[0];
nextVideo.src = next.src;
onLoadedMetadata($nextVideo, function() {
nextVideo.currentTime = next['in'] || 0;
});
}
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function onLoadedMetadata($video, callback) {
if ($video[0].readyState) {
callback();
} else {
$video.one('loadedmetadata', function(event) {
callback();
});
}
}
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function setCurrentItem(item) {
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Ox.Log('Video', 'sCI', item, self.numberOfItems);
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var interval;
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if (item >= self.numberOfItems || item < 0) {
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if (self.options.loop) {
item = Ox.mod(item, self.numberOfItems);
} else {
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self.seeking = false;
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self.ended = true;
self.paused = true;
self.video && self.video.pause();
that.triggerEvent('ended');
return;
}
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}
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self.video && self.video.pause();
//fixme always sync now?
set();
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function set() {
self.currentItem = item;
self.currentItemId = self.items[self.currentItem].id;
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setCurrentVideo();
onLoadedMetadata(self.$video, function() {
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that.triggerEvent('sizechange');
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that.triggerEvent('itemchange', {
item: self.currentItem
});
});
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}
}
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function setCurrentVideo() {
var css = {},
muted = false,
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volume = 1,
item = self.items[self.currentItem],
next;
Ox.Log('Video', 'sCV', item);
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['left', 'top', 'width', 'height'].forEach(function(key) {
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css[key] = self.$videos[self.currentVideo].css(key);
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});
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if (self.video) {
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self.$videos[self.currentVideo].hide();
self.video.pause();
volume = self.video.volume;
muted = self.video.muted;
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}
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self.currentVideo = Ox.mod(self.currentVideo + 1, self.$videos.length);
self.$video = self.$videos[self.currentVideo];
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self.video = self.$video[0];
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if (self.$video.attr('src') != item.src) {
self.video.src = item.src;
}
self.video.volume = volume;
self.video.muted = muted;
self.$video.css(css);
onLoadedMetadata(self.$video, function() {
self.$video.show();
});
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!self.paused && self.video.play();
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Ox.Log('Video', 'sCV', self.video.src, item['in']);
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if (item['in']) {
setCurrentItemTime(item['in']);
}
loadNextVideo();
}
function setCurrentItemTime(currentTime) {
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Ox.Log('Video', 'sCIT', currentTime, self.video.currentTime, 'delta', currentTime - self.video.currentTime);
if (currentTime != self.video.currentTime) {
onLoadedMetadata(self.$video, function() {
self.video.currentTime = currentTime;
});
} else {
that.triggerEvent('seeked');
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}
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}
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function setCurrentTime(time) {
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Ox.Log('Video', 'sCT', time);
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var currentTime, currentItem;
self.items.forEach(function(item, i) {
if (time >= item.position
&& time < item.position + item.duration) {
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currentItem = i;
currentTime = time - item.position + item['in'];
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return false;
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}
});
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if (self.items.length) {
// Set to end of items if time > duration
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if (Ox.isUndefined(currentItem) && Ox.isUndefined(currentTime)) {
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currentItem = self.items.length - 1;
currentTime = self.items[currentItem].duration + self.items[currentItem]['in'];
}
Ox.Log('Video', 'sCT', time, '=>', currentItem, currentTime);
if (currentItem != self.currentItem) {
setCurrentItem(currentItem);
}
self.seeking = true;
self.currentTime = time;
that.triggerEvent('seeking');
setCurrentItemTime(currentTime);
} else {
self.currentTime = 0;
}
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}
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/*@
animate <f> animate
@*/
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that.animate = function() {
self.$video.animate.apply(self.$video, arguments);
return that;
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};
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/*@
brightness <f> get/set brightness
@*/
that.brightness = function() {
var ret;
if (arguments.length == 0) {
ret = 1 - parseFloat(self.$brightness.css('opacity'));
} else {
self.$brightness.css({opacity: 1 - arguments[0]});
ret = that;
}
return ret;
};
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/*@
buffered <f> buffered
@*/
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that.buffered = function() {
return self.video.buffered;
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};
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/*@
currentTime <f> get/set currentTime
@*/
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that.currentTime = function() {
var ret;
if (arguments.length == 0) {
ret = getCurrentTime();
} else {
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self.ended = false;
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setCurrentTime(arguments[0]);
ret = that;
}
return ret;
};
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/*@
css <f> css
@*/
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that.css = function() {
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self.$video.css.apply(self.$video, arguments);
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return that;
};
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/*@
duration <f> duration
@*/
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that.duration = function() {
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return self.items ? Ox.sum(self.items.map(function(item) {
return item.duration;
})) : NaN;
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};
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/*@
muted <f> get/set muted
@*/
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that.muted = function() {
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return getset('muted', arguments[0]);
};
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/*@
pause <f> pause
@*/
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that.pause = function() {
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self.paused = true;
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self.video.pause();
return that;
};
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/*@
play <f> play
@*/
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that.play = function() {
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if (self.ended) {
that.currentTime(0);
}
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self.ended = false;
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self.paused = false;
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self.seeking = false;
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self.video.play();
return that;
};
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/*@
videoHeight <f> get videoHeight
@*/
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that.videoHeight = function() {
return self.video.videoHeight;
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};
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/*@
videoWidth <f> get videoWidth
@*/
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that.videoWidth = function() {
return self.video.videoWidth;
};
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/*@
volume <f> get/set volume
@*/
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that.volume = function(value) {
return getset('volume', arguments[0]);
};
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return that;
};