Greasy Fork is available in English.
爬取主流视频网站弹幕显示到第三方播放器中
// ==UserScript==
// @name 弹幕插件
// @namespace https://github.com/yuaErha
// @include http://*
// @include https://*
// @version 0.1
// @description 爬取主流视频网站弹幕显示到第三方播放器中
// @author Yua
// @match http://*/*
// @match https://*/*
// @icon 127.0.0.1
// @connect *
// @require https://lib.baomitu.com/pako/2.0.4/pako.es5.min.js
// @run-at document-body
// @grant GM_addStyle
// @grant GM_xmlhttpRequest
// @grant GM_setValue
// @grant GM_getValue
// @grant GM_addValueChangeListener
// ==/UserScript==
// Ajax 封装
const xhr = option =>
new Promise((resolve, reject) => {
GM_xmlhttpRequest({
...option,
onerror: reject,
onload: resolve
})
})
/**
*
* @param {Document} xml -xml Dom
* @return {string} json -转换后的json数据
*/
function xml2json(xml) {
try {
let obj = {}
if (xml.childElementCount > 0) {
for (const node of xml.childNodes) {
const nodeName = node.nodeName
if (nodeName === '#text') continue
if (typeof obj[nodeName] == 'undefined') {
obj[nodeName] = xml2json(node)
} else {
if (typeof obj[nodeName].push == 'undefined') {
obj[nodeName] = []
obj[nodeName].push(obj[nodeName])
}
obj[nodeName].push(xml2json(node))
}
}
} else {
obj = Number(xml.textContent) + '' === 'NaN' ? xml.textContent : Number(xml.textContent)
}
return obj
} catch (e) {
console.log(e.message)
return {}
}
}
/**
* 常见的Danmu解析器 | 腾讯视频,爱奇艺,优酷视频,芒果TV...
*/
const DanmuParser = {
async tencentParse(url, offset = 0) {
const { vid } = await xhr({ method: 'GET', url }).then(resp => JSON.parse(resp.responseText.match(/var VIDEO_INFO = (\{.*?\})/m)[1]))
const targetId = await xhr({
method: 'GET',
url: 'http://bullet.video.qq.com/fcgi-bin/target/regist?otype=json&vid=' + vid
}).then(resp => resp.responseText.match(/targetid=(\d+)/m)[1])
// const timestamp = Math.floor(timepoint / 30)
// const offset = 30 * timestamp + 15
const danmuUrl = 'http://mfm.video.qq.com/danmu?timestamp=' + offset + '&target_id=' + targetId
return xhr({ method: 'GET', url: danmuUrl })
.then(resp => {
let comments = JSON.parse(resp.responseText)['comments']
return comments.map(
item =>
new Object({
content: item['content'],
name: item['opername'],
time: item['timepoint']
})
)
})
.catch(err => [])
},
async iqiyiParse(url, offset = 0) {
const { tvId } = await xhr({ method: 'GET', url }).then(resp => JSON.parse(resp.responseText.match(/:page-info='(.*?)'/m)[1]))
// const offset = Math.ceil(timepoint / 60 / 5)
const danmuUrl = `https://cmts.iqiyi.com/bullet/${String(tvId).substr(String(tvId).length - 4, 2)}/${String(tvId).substr(String(tvId).length - 2, 2)}/${tvId}_300_${offset}.z`
return xhr({
method: 'GET',
url: danmuUrl,
responseType: 'arraybuffer'
})
.then(resp => {
const responseArray = new Uint8Array(resp.response)
const responseXMl = new TextDecoder().decode(pako.ungzip(responseArray)).replace(/&#\d{2};/g, '')
const parser = new DOMParser()
const xmlDoc = parser.parseFromString(responseXMl, 'text/xml')
return Array.from(xmlDoc.querySelectorAll('bulletInfo')).map(node => {
const item = xml2json(node)
return new Object({
content: item['content'],
name: item['userInfo']['name'] || '',
time: item['showTime']
})
})
})
.catch(err => [])
},
async youkuParse(url, offset = 0) {
const { videoId, seconds } = await xhr({ method: 'GET', url }).then(resp => {
let data = resp.responseText.match(/\}\s*window\.PageConfig\s*=\s*([\s\S]*?);\s*var/m)[1]
eval(`data = ${data}`)
return data
})
const danmuUrl = `https://service.danmu.youku.com/list?mat=${offset}&ct=1001&iid=${videoId}`
console.log(danmuUrl)
// await xhr({ method: 'GET', url: danmuUrl }).then(resp => {
// console.log(resp.responseText)
// })
// console.log(videoId)
},
async mgtvParse(url, offset = 0) {
const splits = url.split('/')
const cid = splits[4]
const vid = splits[5].split('.')[0]
// const offset = Math.floor(timepoint / 60)
const danmuUrl = `https://galaxy.bz.mgtv.com/rdbarrage?version=3.0.0&vid=${vid}&cid=${cid}&time=${60 * 1000 * offset}`
return xhr({ method: 'GET', url: danmuUrl })
.then(resp => {
const comments = JSON.parse(resp.responseText)['data']['items']
return comments.map(
item =>
new Object({
content: item['content'],
name: '',
time: item['time']
})
)
})
.catch(err => [])
},
async parseUrl(url, offset = 0) {
let danmus = []
if (url.includes('v.qq.com')) {
danmus = this.tencentParse(url, offset)
} else if (url.includes('www.iqiyi.com')) {
danmus = this.iqiyiParse(url, offset)
} else if (url.includes('v.youku.com')) {
danmus = this.youkuParse(url, offset)
} else if (url.includes('www.mgtv.com')) {
danmus = this.mgtvParse(url, offset)
} else if (url.includes('www.bilibili.com')) {
}
return danmus
}
}
// 监听Document以及frame下的 video元素
function ready(selector, fn) {
const docRoot = window.document.documentElement
if (!docRoot) return false
const listenNodeList = []
// 获取MutationObserver，兼容低版本的浏览器
const MutationObserver = window.MutationObserver || window.WebKitMutationObserver || window.MozMutationObserver
// 创建Observer
const Observer = new MutationObserver(mutations => {
docRoot.querySelectorAll(selector).forEach(item => {
if (listenNodeList.includes(item)) {
} else {
listenNodeList.push(item)
fn(item)
Observer.disconnect()
}
})
})
// 获取dom元素
Observer.observe(docRoot, {
childList: true,
subtree: true
})
}
/**
* 弹幕数组随机排序
*/
function shuffleArray(array) {
for (let i = array.length - 1; i > 0; i--) {
const j = Math.floor(Math.random() * (i + 1))
;[array[i], array[j]] = [array[j], array[i]]
}
}
/**
* 计算偏移量
* @param {String} url -视频链接
* @param {int} timepoint -时间戳
* @return {int} offset -偏移量
*/
function calcOffset(url, timepoint) {
let offset = 0
if (url.includes('v.qq.com')) {
const timestamp = Math.floor(timepoint / 30)
offset = 30 * timestamp + 15
} else if (url.includes('www.iqiyi.com')) {
offset = Math.ceil(timepoint / 60 / 5)
} else if (url.includes('v.youku.com')) {
} else if (url.includes('www.mgtv.com')) {
offset = Math.floor(timepoint / 60)
} else if (url.includes('www.bilibili.com')) {
}
return offset
}
// 生成随机显示的时间单位
function randomNum(minNum, maxNum) {
switch (arguments.length) {
case 1:
return parseInt(Math.random() * minNum + 1, 10)
case 2:
return parseInt(Math.random() * (maxNum - minNum + 1) + minNum, 10)
default:
return 0
}
}
// 弹幕颜色
const colors = ['#E91E63', '#FFEB3B', '#F44336', '#2196F3', '#FFB74D']
/**
* 弹幕类 监听播放器事件: 播放 暂停 全屏...
*/
class Danmuer {
constructor() {
this.player = null
this.videoUrl = ''
this.offsets = []
this.danmus = []
this.state = 'close'
this.cTime = 0
}
addEvent() {
if (this.player == null) return
GM_addValueChangeListener('state', (name, old_value, new_value, remote) => {
this.state = new_value
if (this.state === 'close') this.close()
})
// 监听事件
/* document.addEventListener('fullscreenchange', function (event) {
if (document.fullscreenElement !== null) {
// console.log(document.fullscreenElement)
}
}) */
this.player.addEventListener('pause', event => this.pause())
/* this.player.addEventListener('playing', event => {
const currentTime = event.target.currentTime
console.log('显示弹幕 ')
this.start()
}) */
// this.player.addEventListener('play', event => {
// this.play()
// })
this.player.addEventListener('timeupdate', event => this.play())
}
use(player) {
this.player = player
this.videoUrl = ''
if (this.player == null) return
this.state = 'close'
this.addEvent()
}
pause() {
if (this.state == 'close') return
this.state = 'pause'
this.player.parentNode.querySelectorAll('.danmu').forEach(item => (item.style.animationPlayState = 'paused'))
}
async play() {
this.videoUrl = GM_getValue('videoUrl', '')
if (this.videoUrl == '') return
if (this.state == 'close') return
if (this.state == 'pause') {
this.player.parentNode.querySelectorAll('.danmu').forEach(item => (item.style.animationPlayState = 'running'))
}
this.state = 'play'
const currentTime = Math.floor(this.player.currentTime)
if (currentTime % 2 == 0) return
if (this.cTime === currentTime) return
this.cTime = currentTime
const offset = calcOffset(this.videoUrl, currentTime)
if (!this.offsets.includes(offset)) {
this.offsets.push(offset)
const danmus = await DanmuParser.parseUrl(this.videoUrl, offset)
this.danmus.push(...danmus)
}
const { clientWidth, clientHeight } = this.player
const track = Math.ceil(clientHeight / 3 / 20)
let arr = this.danmus.filter(item => {
if (item.time != currentTime && item.time != currentTime + 1) {
return false
}
item.content = item.content.replace(/\[.*?\]/g, '').trim()
return item.content.length >= 2
}) /* .filter((item,index,array)=>{}) */
shuffleArray(arr)
for (let i = 0; i < arr.length; i++) {
if (i >= 3) return
const item = arr[i]
const dm = document.createElement('div')
dm.setAttribute('class', 'danmu')
if (Math.random() * 10 < 2) {
dm.style.setProperty('color', colors[Math.floor(Math.random() * colors.length)], 'important')
} else {
dm.style.setProperty('color', '#ffffff', 'important')
}
// dm.style.setProperty('color', '#ffffff', 'important')
dm.style.transform = `translateX(${clientWidth + 60}px)`
// dm.style.animationDelay = `${Math.ceil(Math.random() * 5 + 1)}s`
dm.style.marginTop = `${20 * randomNum(track) /* + randomNum(10) */}px`
/* if (item.name === '') {
dm.innerText = item.content
} else {
dm.innerText = item.name + ': ' + item.content
} */
dm.innerText = item.content
dm.style.animationDuration = `${18 + randomNum(2)}s`
// dm.style.animationDuration =Math.ceil( (clientWidth + 80)/120) + 's'
dm.addEventListener('webkitAnimationEnd', event => dm.remove(), false)
this.player.parentNode.appendChild(dm)
}
}
close() {
if (this.player == null) return
this.player.parentNode.querySelectorAll('.danmu').forEach(item => item.remove())
this.state = 'close'
}
}
// 添加显示盒子
function addFlexBox() {
if (window !== window.top) return
GM_addStyle(`
#danmu-box{
position: fixed;
top: 60px;
right: 60px;
z-index: 999999;
height: auto;
width: fit-content;
display: flex;
justify-content: center;
align-items: center;
box-shadow: 0 0 5px rgba(0, 0, 0, .3);
}
#danmu-box #danmu-url{
margin: 0;
padding: 0;
width: 0;
height: 24px;
background:rgb(244, 245, 245);
outline:none;
border:1px #1e80ff solid;
box-sizing: border-box;
transition: all .2s linear;
}
#danmu-box:hover>#danmu-url{
width: 80px;
padding: 0 4px;
}
#danmu-box #danmu-btn{
margin: 0;
padding: 0;
height: 24px;
width: 24px;
cursor: pointer;
color: #ffffff;
background:#1e80ff;
outline:none;
border:0px;
}`)
try {
let dBox = document.createElement('div')
dBox.setAttribute('id', 'danmu-box')
let dUrl = document.createElement('input')
dUrl.setAttribute('id', 'danmu-url')
dUrl.setAttribute('type', 'text')
dUrl.setAttribute('placeholder', 'http://')
let dBtn = document.createElement('input')
dBtn.setAttribute('id', 'danmu-btn')
dBtn.setAttribute('type', 'button')
dBtn.setAttribute('value', '开')
GM_setValue('state', 'close')
dBtn.addEventListener(
'dblclick',
event => {
if (dBtn.value === '弹') {
dBtn.value = '开'
GM_setValue('state', 'close')
} else {
dBtn.value = '弹'
GM_setValue('state', 'play')
}
},
false
)
dUrl.addEventListener(
'input',
event => GM_setValue('videoUrl', dUrl.value.trim()),
false
)
dBox.appendChild(dUrl)
dBox.appendChild(dBtn)
document.querySelector('body').appendChild(dBox)
} catch (error) {
console.log(error)
}
}
// 弹幕CSS3 动画
function addDanmuCss() {
GM_addStyle(`@keyframes moveOut {
to {
transform: translateX(-100%);
}
}
.danmu {
z-index: 9999;
height: auto;
width: fit-content;
font-size: 20px;
position: absolute;
top: 0;
left: 0;
transform: translateX(900px);
animation-name: moveOut;
animation-duration: 5s;
animation-timing-function: linear;
animation-fill-mode: forwards;
}
.danmu:hover{
cursor: pointer;
}`)
}
function run() {
addFlexBox()
let player = document.querySelector('video')
ready('video', item => {
console.log('== 检测到了 player ==')
if (player == null) {
player = item
addDanmuCss()
setTimeout(() => {
new Danmuer().use(player)
}, 3000)
}
})
}