731 lines
24 KiB
JavaScript
731 lines
24 KiB
JavaScript
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'use strict';
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/*@
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VideoElement <f> VideoElement Object
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options <o> Options object
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autoplay <b|false> autoplay
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items <a|[]> array of objects with src,in,out,duration
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loop <b|false> loop playback
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playbackRate <n|1> playback rate
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position <n|0> start position
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self <o> Shared private variable
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([options[, self]]) -> <o:Element> VideoElement Object
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loadedmetadata <!> loadedmetadata
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itemchange <!> itemchange
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seeked <!> seeked
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seeking <!> seeking
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sizechange <!> sizechange
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ended <!> ended
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@*/
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(function() {
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var queue = [],
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queueSize = 100,
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restrictedElements = [],
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requiresUserGesture = mediaPlaybackRequiresUserGesture(),
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unblock = [];
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window.VideoElement = function(options) {
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var self = {},
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that = document.createElement("div");
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self.options = {
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autoplay: false,
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items: [],
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loop: false,
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muted: false,
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playbackRate: 1,
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position: 0,
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volume: 1
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}
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Object.assign(self.options, options);
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debug(self.options)
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that.style.position = "relative"
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that.style.width = "100%"
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that.style.height = "100%"
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that.style.maxHeight = "100vh"
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that.style.margin = 'auto'
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if (self.options.aspectratio) {
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that.style.aspectRatio = self.options.aspectratio
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} else {
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that.style.height = '128px'
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}
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that.triggerEvent = function(event, data) {
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if (event != 'timeupdate') {
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debug('Video', 'triggerEvent', event, data);
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}
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event = new Event(event)
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event.data = data
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that.dispatchEvent(event)
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}
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/*
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.update({
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items: function() {
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self.loadedMetadata = false;
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loadItems(function() {
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self.loadedMetadata = true;
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var update = true;
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if (self.currentItem >= self.numberOfItems) {
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self.currentItem = 0;
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}
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if (!self.numberOfItems) {
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self.video.src = '';
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that.triggerEvent('durationchange', {
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duration: that.duration()
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});
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} else {
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if (self.currentItemId != self.items[self.currentItem].id) {
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// check if current item is in new items
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self.items.some(function(item, i) {
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if (item.id == self.currentItemId) {
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self.currentItem = i;
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loadNextVideo();
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update = false;
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return true;
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}
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});
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if (update) {
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self.currentItem = 0;
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self.currentItemId = self.items[self.currentItem].id;
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}
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}
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if (!update) {
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that.triggerEvent('seeked');
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that.triggerEvent('durationchange', {
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duration: that.duration()
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});
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} else {
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setCurrentVideo(function() {
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that.triggerEvent('seeked');
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that.triggerEvent('durationchange', {
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duration: that.duration()
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});
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});
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}
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}
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});
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},
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playbackRate: function() {
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self.video.playbackRate = self.options.playbackRate;
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}
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})
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.css({width: '100%', height: '100%'});
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*/
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debug('Video', 'VIDEO ELEMENT OPTIONS', self.options);
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self.currentItem = -1;
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self.currentTime = 0;
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self.currentVideo = 0;
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self.items = [];
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self.loadedMetadata = false;
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that.paused = self.paused = true;
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self.seeking = false;
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self.loading = true;
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self.buffering = true;
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self.videos = [getVideo(), getVideo()];
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self.video = self.videos[self.currentVideo];
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self.video.classList.add("active")
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self.volume = self.options.volume;
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self.muted = self.options.muted;
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self.brightness = document.createElement('div')
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self.brightness.style.top = '0'
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self.brightness.style.left = '0'
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self.brightness.style.width = '100%'
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self.brightness.style.height = '100%'
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self.brightness.style.background = 'rgb(0, 0, 0)'
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self.brightness.style.opacity = '0'
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self.brightness.style.position = "absolute"
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that.append(self.brightness)
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self.timeupdate = setInterval(function() {
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if (!self.paused
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&& !self.loading
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&& self.loadedMetadata
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&& self.items[self.currentItem]
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&& self.items[self.currentItem].out
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&& self.video.currentTime >= self.items[self.currentItem].out) {
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setCurrentItem(self.currentItem + 1);
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}
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}, 30);
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// mobile browsers only allow playing media elements after user interaction
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if (restrictedElements.length > 0) {
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unblock.push(setSource)
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setTimeout(function() {
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that.triggerEvent('requiresusergesture');
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})
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} else {
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setSource();
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}
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function getCurrentTime() {
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var item = self.items[self.currentItem];
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return self.seeking || self.loading
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? self.currentTime
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: item ? item.position + self.video.currentTime - item['in'] : 0;
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}
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function getset(key, value) {
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var ret;
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if (isUndefined(value)) {
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ret = self.video[key];
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} else {
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self.video[key] = value;
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ret = that;
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}
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return ret;
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}
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function getVideo() {
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var video = getVideoElement()
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video.style.display = "none"
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video.style.width = "100%"
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video.style.height = "100%"
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video.style.margin = "auto"
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video.style.background = '#000'
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if (self.options.aspectratio) {
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video.style.aspectRatio = self.options.aspectratio
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} else {
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video.style.height = '128px'
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}
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video.style.top = 0
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video.style.left = 0
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video.style.position = "absolute"
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video.preload = "metadata"
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video.addEventListener("ended", event => {
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if (self.video == video) {
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setCurrentItem(self.currentItem + 1);
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}
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})
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video.addEventListener("loadedmetadata", event => {
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//console.log("!!", video.src, "loaded", 'current?', video == self.video)
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})
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video.addEventListener("progress", event => {
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// stop buffering if buffered to end point
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var item = self.items[self.currentItem],
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nextItem = mod(self.currentItem + 1, self.numberOfItems),
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next = self.items[nextItem],
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nextVideo = self.videos[mod(self.currentVideo + 1, self.videos.length)];
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if (self.video == video && (video.preload != 'none' || self.buffering)) {
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if (clipCached(video, item)) {
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video.preload = 'none';
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self.buffering = false;
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if (nextItem != self.currentItem) {
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nextVideo.preload = 'auto';
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}
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} else {
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if (nextItem != self.currentItem && nextVideo.preload != 'none' && nextVideo.src) {
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nextVideo.preload = 'none';
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}
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}
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} else if (nextVideo == video && video.preload != 'none' && nextVideo.src) {
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if (clipCached(video, next)) {
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video.preload = 'none';
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}
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}
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function clipCached(video, item) {
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var cached = false
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for (var i=0; i<video.buffered.length; i++) {
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if (video.buffered.start(i) <= item['in']
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&& video.buffered.end(i) >= item.out) {
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cached = true
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}
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}
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return cached
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}
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})
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video.addEventListener("volumechange", event => {
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if (self.video == video) {
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that.triggerEvent('volumechange')
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}
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})
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video.addEventListener("play", event => {
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/*
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if (self.video == video) {
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that.triggerEvent('play')
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}
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*/
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})
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video.addEventListener("pause", event => {
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/*
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if (self.video == video) {
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that.triggerEvent('pause')
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}
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*/
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})
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video.addEventListener("timeupdate", event => {
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if (self.video == video) {
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/*
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var box = self.video.getBoundingClientRect()
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if (box.width && box.height) {
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that.style.width = box.width + 'px'
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that.style.height = box.height + 'px'
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}
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*/
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that.triggerEvent('timeupdate', {
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currentTime: getCurrentTime()
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})
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}
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})
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video.addEventListener("seeking", event => {
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if (self.video == video) {
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that.triggerEvent('seeking')
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}
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})
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video.addEventListener("stop", event => {
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if (self.video == video) {
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//self.video.pause();
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that.triggerEvent('ended');
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}
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})
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that.append(video)
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return video
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}
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function getVideoElement() {
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var video;
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if (requiresUserGesture) {
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if (queue.length) {
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video = queue.pop();
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} else {
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video = document.createElement('video');
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restrictedElements.push(video);
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}
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} else {
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video = document.createElement('video');
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}
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video.playsinline = true
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video.setAttribute('playsinline', 'playsinline')
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video.setAttribute('webkit-playsinline', 'webkit-playsinline')
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video.WebKitPlaysInline = true
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return video
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};
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function getVolume() {
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var volume = 1;
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if (self.items[self.currentItem] && isNumber(self.items[self.currentItem].volume)) {
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volume = self.items[self.currentItem].volume;
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}
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return self.volume * volume;
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}
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function isReady(video, callback) {
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if (video.seeking && !self.paused && !self.seeking) {
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that.triggerEvent('seeking');
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debug('Video', 'isReady', 'seeking');
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video.addEventListener('seeked', function(event) {
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debug('Video', 'isReady', 'seeked');
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that.triggerEvent('seeked');
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callback(video);
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}, {once: true})
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} else if (video.readyState) {
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callback(video);
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} else {
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that.triggerEvent('seeking');
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video.addEventListener('loadedmetadata', function(event) {
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callback(video);
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}, {once: true});
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video.addEventListener('seeked', event => {
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that.triggerEvent('seeked');
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}, {once: true})
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}
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}
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function loadItems(callback) {
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debug('loadItems')
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var currentTime = 0,
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items = self.options.items.map(function(item) {
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return isObject(item) ? {...item} : {src: item};
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});
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self.items = items;
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self.numberOfItems = self.items.length;
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items.forEach(item => {
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item['in'] = item['in'] || 0;
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item.position = currentTime;
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if (item.out) {
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item.duration = item.out - item['in'];
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}
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if (item.duration) {
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if (!item.out) {
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item.out = item.duration;
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}
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currentTime += item.duration;
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item.id = getId(item);
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} else {
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getVideoInfo(item.src, function(info) {
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item.duration = info.duration;
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if (!item.out) {
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item.out = item.duration;
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}
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currentTime += item.duration;
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item.id = getId(item);
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});
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}
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})
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debug('loadItems done')
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callback && callback();
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function getId(item) {
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return item.id || item.src + '/' + item['in'] + '-' + item.out;
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}
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}
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function loadNextVideo() {
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if (self.numberOfItems <= 1) {
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return;
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}
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var item = self.items[self.currentItem],
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nextItem = mod(self.currentItem + 1, self.numberOfItems),
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next = self.items[nextItem],
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nextVideo = self.videos[mod(self.currentVideo + 1, self.videos.length)];
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nextVideo.addEventListener('loadedmetadata', function() {
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if (self.video != nextVideo) {
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nextVideo.currentTime = next['in'] || 0;
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}
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}, {once: true});
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nextVideo.src = next.src;
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nextVideo.preload = 'metadata';
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}
|
||
|
|
|
||
|
|
function setCurrentItem(item) {
|
||
|
|
debug('Video', 'sCI', item, self.numberOfItems);
|
||
|
|
var interval;
|
||
|
|
if (item >= self.numberOfItems || item < 0) {
|
||
|
|
if (self.options.loop) {
|
||
|
|
item = mod(item, self.numberOfItems);
|
||
|
|
} else {
|
||
|
|
self.seeking = false;
|
||
|
|
self.ended = true;
|
||
|
|
that.paused = self.paused = true;
|
||
|
|
self.video && self.video.pause();
|
||
|
|
that.triggerEvent('ended');
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
self.video && self.video.pause();
|
||
|
|
self.currentItem = item;
|
||
|
|
self.currentItemId = self.items[self.currentItem].id;
|
||
|
|
setCurrentVideo(function() {
|
||
|
|
if (!self.loadedMetadata) {
|
||
|
|
self.loadedMetadata = true;
|
||
|
|
that.triggerEvent('loadedmetadata');
|
||
|
|
}
|
||
|
|
debug('Video', 'sCI', 'trigger itemchange',
|
||
|
|
self.items[self.currentItem]['in'], self.video.currentTime, self.video.seeking);
|
||
|
|
that.triggerEvent('sizechange');
|
||
|
|
that.triggerEvent('itemchange', {
|
||
|
|
item: self.currentItem
|
||
|
|
});
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
function setCurrentVideo(callback) {
|
||
|
|
var css = {},
|
||
|
|
muted = self.muted,
|
||
|
|
item = self.items[self.currentItem],
|
||
|
|
next;
|
||
|
|
debug('Video', 'sCV', JSON.stringify(item));
|
||
|
|
|
||
|
|
['left', 'top', 'width', 'height'].forEach(function(key) {
|
||
|
|
css[key] = self.videos[self.currentVideo].style[key];
|
||
|
|
});
|
||
|
|
self.currentTime = item.position;
|
||
|
|
self.loading = true;
|
||
|
|
if (self.video) {
|
||
|
|
self.videos[self.currentVideo].style.display = "none"
|
||
|
|
self.videos[self.currentVideo].classList.remove("active")
|
||
|
|
self.video.pause();
|
||
|
|
}
|
||
|
|
self.currentVideo = mod(self.currentVideo + 1, self.videos.length);
|
||
|
|
self.video = self.videos[self.currentVideo];
|
||
|
|
self.video.classList.add("active")
|
||
|
|
self.video.muted = true; // avoid sound glitch during load
|
||
|
|
if (!self.video.attributes.src || self.video.attributes.src.value != item.src) {
|
||
|
|
self.loadedMetadata && debug('Video', 'caching next item failed, reset src');
|
||
|
|
self.video.src = item.src;
|
||
|
|
}
|
||
|
|
self.video.preload = 'metadata';
|
||
|
|
self.video.volume = getVolume();
|
||
|
|
self.video.playbackRate = self.options.playbackRate;
|
||
|
|
Object.keys(css).forEach(key => {
|
||
|
|
self.video.style[key] = css[key]
|
||
|
|
})
|
||
|
|
self.buffering = true;
|
||
|
|
debug('Video', 'sCV', self.video.src, item['in'],
|
||
|
|
self.video.currentTime, self.video.seeking);
|
||
|
|
isReady(self.video, function(video) {
|
||
|
|
var in_ = item['in'] || 0;
|
||
|
|
|
||
|
|
function ready() {
|
||
|
|
debug('Video', 'sCV', 'ready');
|
||
|
|
self.seeking = false;
|
||
|
|
self.loading = false;
|
||
|
|
self.video.muted = muted;
|
||
|
|
!self.paused && self.video.play();
|
||
|
|
self.video.style.display = 'block'
|
||
|
|
callback && callback();
|
||
|
|
loadNextVideo();
|
||
|
|
}
|
||
|
|
if (video.currentTime == in_) {
|
||
|
|
debug('Video', 'sCV', 'already at position', item.id, in_, video.currentTime);
|
||
|
|
ready();
|
||
|
|
} else {
|
||
|
|
self.video.addEventListener("seeked", event => {
|
||
|
|
debug('Video', 'sCV', 'seeked callback');
|
||
|
|
ready();
|
||
|
|
}, {once: true})
|
||
|
|
if (!self.seeking) {
|
||
|
|
debug('Video', 'sCV set in', video.src, in_, video.currentTime, video.seeking);
|
||
|
|
self.seeking = true;
|
||
|
|
video.currentTime = in_;
|
||
|
|
if (self.paused) {
|
||
|
|
var promise = self.video.play();
|
||
|
|
if (promise !== undefined) {
|
||
|
|
promise.then(function() {
|
||
|
|
self.video.pause();
|
||
|
|
self.video.muted = muted;
|
||
|
|
}).catch(function() {
|
||
|
|
self.video.pause();
|
||
|
|
self.video.muted = muted;
|
||
|
|
});
|
||
|
|
} else {
|
||
|
|
self.video.pause();
|
||
|
|
self.video.muted = muted;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
function setCurrentItemTime(currentTime) {
|
||
|
|
debug('Video', 'sCIT', currentTime, self.video.currentTime,
|
||
|
|
'delta', currentTime - self.video.currentTime);
|
||
|
|
isReady(self.video, function(video) {
|
||
|
|
if (self.video == video) {
|
||
|
|
if(self.video.seeking) {
|
||
|
|
self.video.addEventListener("seeked", event => {
|
||
|
|
that.triggerEvent('seeked');
|
||
|
|
self.seeking = false;
|
||
|
|
}, {once: true})
|
||
|
|
} else if (self.seeking) {
|
||
|
|
that.triggerEvent('seeked');
|
||
|
|
self.seeking = false;
|
||
|
|
}
|
||
|
|
video.currentTime = currentTime;
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
function setCurrentTime(time) {
|
||
|
|
debug('Video', 'sCT', time);
|
||
|
|
var currentTime, currentItem;
|
||
|
|
self.items.forEach(function(item, i) {
|
||
|
|
if (time >= item.position
|
||
|
|
&& time < item.position + item.duration) {
|
||
|
|
currentItem = i;
|
||
|
|
currentTime = time - item.position + item['in'];
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
});
|
||
|
|
if (self.items.length) {
|
||
|
|
// Set to end of items if time > duration
|
||
|
|
if (isUndefined(currentItem) && isUndefined(currentTime)) {
|
||
|
|
currentItem = self.items.length - 1;
|
||
|
|
currentTime = self.items[currentItem].duration + self.items[currentItem]['in'];
|
||
|
|
}
|
||
|
|
debug('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;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function setSource() {
|
||
|
|
self.loadedMetadata = false;
|
||
|
|
loadItems(function() {
|
||
|
|
setCurrentTime(self.options.position);
|
||
|
|
self.options.autoplay && setTimeout(function() {
|
||
|
|
that.play();
|
||
|
|
});
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*@
|
||
|
|
brightness <f> get/set brightness
|
||
|
|
@*/
|
||
|
|
that.brightness = function() {
|
||
|
|
var ret;
|
||
|
|
if (arguments.length == 0) {
|
||
|
|
ret = 1 - parseFloat(self.brightness.style.opacity);
|
||
|
|
} else {
|
||
|
|
self.brightness.style.opacity = 1 - arguments[0]
|
||
|
|
ret = that;
|
||
|
|
}
|
||
|
|
return ret;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*@
|
||
|
|
buffered <f> buffered
|
||
|
|
@*/
|
||
|
|
that.buffered = function() {
|
||
|
|
return self.video.buffered;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*@
|
||
|
|
currentTime <f> get/set currentTime
|
||
|
|
@*/
|
||
|
|
that.currentTime = function() {
|
||
|
|
var ret;
|
||
|
|
if (arguments.length == 0) {
|
||
|
|
ret = getCurrentTime();
|
||
|
|
} else {
|
||
|
|
self.ended = false;
|
||
|
|
setCurrentTime(arguments[0]);
|
||
|
|
ret = that;
|
||
|
|
}
|
||
|
|
return ret;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*@
|
||
|
|
duration <f> duration
|
||
|
|
@*/
|
||
|
|
that.duration = function() {
|
||
|
|
return self.items ? self.items.reduce((duration, item) => {
|
||
|
|
return duration + item.duration;
|
||
|
|
}, 0) : NaN;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*@
|
||
|
|
muted <f> get/set muted
|
||
|
|
@*/
|
||
|
|
that.muted = function(value) {
|
||
|
|
if (!isUndefined(value)) {
|
||
|
|
self.muted = value;
|
||
|
|
}
|
||
|
|
return getset('muted', value);
|
||
|
|
};
|
||
|
|
|
||
|
|
/*@
|
||
|
|
pause <f> pause
|
||
|
|
@*/
|
||
|
|
that.pause = function() {
|
||
|
|
that.paused = self.paused = true;
|
||
|
|
self.video.pause();
|
||
|
|
that.paused && that.triggerEvent('pause')
|
||
|
|
};
|
||
|
|
|
||
|
|
/*@
|
||
|
|
play <f> play
|
||
|
|
@*/
|
||
|
|
that.play = function() {
|
||
|
|
if (self.ended) {
|
||
|
|
that.currentTime(0);
|
||
|
|
}
|
||
|
|
isReady(self.video, function(video) {
|
||
|
|
self.ended = false;
|
||
|
|
that.paused = self.paused = false;
|
||
|
|
self.seeking = false;
|
||
|
|
video.play();
|
||
|
|
that.triggerEvent('play')
|
||
|
|
});
|
||
|
|
};
|
||
|
|
|
||
|
|
that.removeElement = function() {
|
||
|
|
self.currentTime = getCurrentTime();
|
||
|
|
self.loading = true;
|
||
|
|
clearInterval(self.timeupdate);
|
||
|
|
//Chrome does not properly release resources, reset manually
|
||
|
|
//http://code.google.com/p/chromium/issues/detail?id=31014
|
||
|
|
self.videos.forEach(function(video) {
|
||
|
|
video.src = ''
|
||
|
|
});
|
||
|
|
return Ox.Element.prototype.removeElement.apply(that, arguments);
|
||
|
|
};
|
||
|
|
|
||
|
|
/*@
|
||
|
|
videoHeight <f> get videoHeight
|
||
|
|
@*/
|
||
|
|
that.videoHeight = function() {
|
||
|
|
return self.video.videoHeight;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*@
|
||
|
|
videoWidth <f> get videoWidth
|
||
|
|
@*/
|
||
|
|
that.videoWidth = function() {
|
||
|
|
return self.video.videoWidth;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*@
|
||
|
|
volume <f> get/set volume
|
||
|
|
@*/
|
||
|
|
that.volume = function(value) {
|
||
|
|
if (isUndefined(value)) {
|
||
|
|
value = self.volume
|
||
|
|
} else {
|
||
|
|
self.volume = value;
|
||
|
|
self.video.volume = getVolume();
|
||
|
|
}
|
||
|
|
return value;
|
||
|
|
};
|
||
|
|
|
||
|
|
return that;
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
// mobile browsers only allow playing media elements after user interaction
|
||
|
|
|
||
|
|
function mediaPlaybackRequiresUserGesture() {
|
||
|
|
// test if play() is ignored when not called from an input event handler
|
||
|
|
var video = document.createElement('video');
|
||
|
|
video.muted = true
|
||
|
|
video.play();
|
||
|
|
return video.paused;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
async function removeBehaviorsRestrictions() {
|
||
|
|
debug('Video', 'remove restrictions on video', self.video, restrictedElements.length, queue.length);
|
||
|
|
if (restrictedElements.length > 0) {
|
||
|
|
var rElements = restrictedElements;
|
||
|
|
restrictedElements = [];
|
||
|
|
rElements.forEach(async function(video) {
|
||
|
|
await video.load();
|
||
|
|
});
|
||
|
|
setTimeout(function() {
|
||
|
|
var u = unblock;
|
||
|
|
unblock = [];
|
||
|
|
u.forEach(function(callback) { callback(); });
|
||
|
|
}, 1000);
|
||
|
|
}
|
||
|
|
while (queue.length < queueSize) {
|
||
|
|
var video = document.createElement('video');
|
||
|
|
video.load();
|
||
|
|
queue.push(video);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (requiresUserGesture) {
|
||
|
|
window.addEventListener('keydown', removeBehaviorsRestrictions);
|
||
|
|
window.addEventListener('mousedown', removeBehaviorsRestrictions);
|
||
|
|
window.addEventListener('touchstart', removeBehaviorsRestrictions);
|
||
|
|
}
|
||
|
|
})();
|