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'+'、'-'控制倍速；'alt'+'[1-9]' 选择快速选择整数倍速；若无效请单击播放窗口一次再尝试，若仍无效请刷新页面；仍有bug请留言反馈
// ==UserScript==
// @name bilibili/B站/mooc/慕课倍速控制优化
// @namespace https://greasyfork.org/zh-CN/users/782923-asea
// @version 1.0.5
// @description '+'、'-'控制倍速；'alt'+'[1-9]' 选择快速选择整数倍速；若无效请单击播放窗口一次再尝试，若仍无效请刷新页面；仍有bug请留言反馈
// @author Asea Q:569389750
// @match https://www.bilibili.com/video/*
// @match https://www.icourse163.org/learn/*
// @match https://www.icourse163.org/spoc/learn/*
// @icon https://www.bilibili.com/favicon.ico
// @icon https://edu-image.nosdn.127.net/32a8dd2a-b9aa-4ec9-abd5-66cd8751befb.png?imageView&quality=100
// @grant none
// @license GPL-3.0-only
// ==/UserScript==
(function() {
var old_url = window.location.href; // 获取当前url，方便后面换课时调用
var errors = 0
mainfn = setInterval(mainKeybind, 500);
function mainKeybind(){
if(document.readyState == 'complete') // 判断网页资源加载完毕
{
urlfn = setInterval(url_listener, 1000) // 监听url变化
var rate = 0.2; // 倍速增长量，倍速最低0.2，最高16
try
{
if(old_url.indexOf("bilibili") != -1)
{
videoElement = document.querySelector('video')
}else{
videoElement = document.querySelector('video')
}
// videoElement.click()
document.onkeydown = keybind // 绑定键盘事件
function keybind(event)
{//键盘事件
var e = event || window.event || arguments.callee.caller.arguments[0];
//鼠标上下键控制视频音量
if(e &&(e.key === '=' || e.key === '+'))
{
// 按加号键 倍速增加
rateButton = document.querySelector(old_url.search('bilibili')!== -1 ? '.bilibili-player-video-btn.bilibili-player-video-btn-speed button' : '.controlbar_btn.ratebtn.j-ratebtn')
videoElement.playbackRate <= 16 -rate ? videoElement.playbackRate = parseFloat((videoElement.playbackRate+rate).toFixed(1)) : 1;
rateButton.textContent = parseFloat(videoElement.playbackRate).toFixed(1).toString() + 'x'
return false;
} else if(e && e.key === '-')
{
// 按减号键 倍速减少
rateButton = document.querySelector(old_url.search('bilibili')!== -1 ? '.bilibili-player-video-btn.bilibili-player-video-btn-speed button' : '.controlbar_btn.ratebtn.j-ratebtn')
videoElement.playbackRate > rate ? videoElement.playbackRate = parseFloat((videoElement.playbackRate-rate).toFixed(1)) : 1;
rateButton.textContent = parseFloat(videoElement.playbackRate).toFixed(1).toString() + 'x'
return false;
} else if(e && e.altKey && '123456789'.search(e.key) != -1)
{
// 整数倍速
rateButton = document.querySelector(old_url.search('bilibili')!== -1 ? '.bilibili-player-video-btn.bilibili-player-video-btn-speed button' : '.controlbar_btn.ratebtn.j-ratebtn')
videoElement.playbackRate > 0 && videoElement.playbackRate <= 16 ? videoElement.playbackRate = Number(e.key) : 1;
rateButton.textContent = videoElement.playbackRate.toFixed(1) + 'x';
return false;
}else if(e && e.altKey && e.key === '0')
{
alert('已开启刷课模式，您可以按[shift]+[0]关闭')
not_pause = setInterval(() => {
if (videoElement.paused === true){
videoElement.play()
}
}, 1000);
}else if(e && e.shiftKey && e.key === '0')
{
try{
clearInterval(not_pause)
alert('已关闭刷课模式')}
catch{
alert('您未开启刷课模式，可以按[alt]+[0]开启')
}
}
};
console.log('Done') // 总事件绑定完毕
clearInterval(mainfn); // 关闭加载元素的定时监听
}
catch
{
errors += 1
if(errors < 20){
console.log('Loading') // 元素未加载出来时
}
else if (errors > 20){
console.log('未发现video元素，已关闭监听')
clearInterval(mainfn)
}
}
}
}
function url_listener()
{
var now_url = window.location.href; // 当前url
if (now_url !== old_url) // 判断是否换节课
{
errors = 0
clearInterval(mainfn)
console.log('发现url切换')
old_url = now_url;
mainfn = setInterval(mainKeybind, 500); // 开启主定时任务
clearInterval(urlfn); // 关闭url监听定时任务
}
}
})();