增強影片音量上限，最高增幅至 10 倍，尚未測試是否所有網域都可使用，當影片無聲時，禁止該腳本在該網域上運行。
目前为
// ==UserScript==
// @name 影片音量增強器
// @version 0.0.29
// @author HentaiSaru
// @description 增強影片音量上限，最高增幅至 10 倍，尚未測試是否所有網域都可使用，當影片無聲時，禁止該腳本在該網域上運行。
// @match *://*/*
// @exclude *://video.eyny.com/*
// @icon https://cdn-icons-png.flaticon.com/512/8298/8298181.png
// @license MIT
// @namespace https://greasyfork.org/users/989635
// @run-at document-end
// @grant GM_setValue
// @grant GM_getValue
// @grant GM_addStyle
// @grant GM_registerMenuCommand
// ==/UserScript==
(function(){if(/^(http|https):\/\/(?!chrome\/|about\/).*$/i.test(document.URL)){var u,k,l=new Map,m=location.hostname,y=document.createDocumentFragment(),v=n("get","\u555f\u7528\u7db2\u57df",[]),q=v.includes(m);w();setTimeout(()=>{z()},1E3);async function w(){A("video",7,a=>{try{k=q?n("get",m)||1:1,u=B(a,k),GM_addStyle("\n .Booster-Modal-Background {\n top: 0;\n left: 0;\n width: 100%;\n height: 100%;\n display: flex;\n z-index: 9999;\n overflow: auto;\n position: fixed;\n align-items: center;\n justify-content: center;\n }\n .Booster-Modal-Button {\n top: 0;\n margin: 3% 2%;\n color: #d877ff;\n font-size: 16px;\n font-weight: bold;\n border-radius: 3px;\n background-color: #ffebfa;\n border: 1px solid rgb(124, 183, 252);\n }\n .Booster-Modal-Button:hover,\n .Booster-Modal-Button:focus {\n color: #fc0e85;\n cursor: pointer;\n text-decoration: none;\n }\n .Booster-Modal-Content {\n width: 400px;\n padding: 5px;\n overflow: auto;\n background-color: #cff4ff;\n border-radius: 10px;\n text-align: center;\n border: 2px ridge #82c4e2;\n border-collapse: collapse;\n margin: 2% auto 8px auto;\n }\n .Booster-Multiplier {\n font-size:25px;\n color:rgb(253, 1, 85);\n margin: 10px;\n font-weight:bold;\n }\n .Booster-Slider {width: 350px;}\n div input {cursor: pointer;}\n "),
C(),D({"\ud83d\udd0a [\u958b\u95dc] \u81ea\u52d5\u589e\u5e45":()=>E(v,m),"\ud83d\udee0\ufe0f \u8a2d\u7f6e\u589e\u5e45":()=>x(),"\ud83d\udcdc \u83dc\u55ae\u71b1\u9375":()=>alert("\u71b1\u9375\u547c\u53eb\u8abf\u6574\u83dc\u55ae!!\n\n\u5feb\u6377\u7d44\u5408 : (Alt + B)")})}catch{}})}function B(a,d){const c=new window.AudioContext,b=c.createMediaElementSource(a),e=c.createGain(),f=c.createBiquadFilter(),p=c.createBiquadFilter(),g=c.createDynamicsCompressor();a.volume=1;e.gain.value=d*d;g.ratio.value=
6;g.knee.value=.5;g.threshold.value=-14;g.attack.value=.02;g.release.value=.4;f.frequency.value=250;f.type="lowshelf";f.gain.value=2.2;p.frequency.value=1E4;p.type="highshelf";p.gain.value=1.8;b.connect(e);e.connect(f);f.connect(p);e.connect(g);g.connect(c.destination);a.setAttribute("Video-Audio-Booster",!0);return{setVolume:function(r){e.gain.value=r*r;k=r}}}async function x(){const a=document.createElement("div");
a.innerHTML=`<div class="Booster-Modal-Content"><h2 style="color: #3754f8;">\u97f3\u91cf\u589e\u91cf</h2><div style="margin:1rem auto 1rem auto;"><div class="Booster-Multiplier"><span><img src="https://cdn-icons-png.flaticon.com/512/8298/8298181.png" width="5%">\u589e\u91cf\u500d\u6578 </span><span id="CurrentValue">${k}</span><span> \u500d</span></div><input type="range" id="sound-amplification" class="Booster-Slider" min="0" max="10.0" value="${k}" step="0.1"><br></div><div style="text-align: right;"><button class="Booster-Modal-Button" id="sound-save">\u4fdd\u5b58\u8a2d\u7f6e</button><button class="Booster-Modal-Button" id="sound-close">\u9000\u51fa\u9078\u55ae</button></div></div>`;
a.classList.add("Booster-Modal-Background");document.body.appendChild(y.appendChild(a));const d=h("#CurrentValue"),c=h("#sound-amplification");t(c,"input",b=>{b=b.target.value;d.textContent=b;u.setVolume(b)},{passive:!0,capture:!0});t(h(".Booster-Modal-Background"),"click",b=>{b.stopPropagation();b=b.target;"sound-save"===b.id?q?(n("set",m,parseFloat(c.value)),h(".Booster-Modal-Background").remove()):alert("\u9700\u555f\u7528\u81ea\u52d5\u589e\u5e45\u624d\u53ef\u4fdd\u5b58"):"Booster-Modal-Background"!==
b.className&&"sound-close"!==b.id||h(".Booster-Modal-Background").remove()},{capture:!0})}async function t(a,d,c,b={}){l.has(a)&&l.get(a).has(d)||(a.addEventListener(d,c,b),l.has(a)||l.set(a,new Map),l.get(a).set(d,c))}function h(a,d=!1,c=document){if(d)return c.querySelectorAll(a);d=a.slice(1);switch(d.includes(" ")||d.includes(".")||d.includes("#")?" ":a[0]){case "#":return c.getElementById(d);case " ":return c.querySelector(a);case ".":return c.getElementsByClassName(d)[0];default:return c.getElementsByTagName(a)[0]}}
async function A(a,d,c){let b,e;const f=new MutationObserver(()=>{if(e=h(a))f.disconnect(),clearTimeout(b),c(e)});f.observe(document.body,{childList:!0,subtree:!0});b=setTimeout(()=>{f.disconnect()},1E3*d)}async function z(){let a;(new MutationObserver(()=>{(a=h("video"))&&!a.hasAttribute("Video-Audio-Booster")&&w()})).observe(document.head,{childList:!0,subtree:!0})}async function D(a){for(const [d,c]of Object.entries(a))GM_registerMenuCommand(d,()=>{c()})}async function C(){t(document,"keydown",
a=>{a.altKey&&"b"===a.key&&x()},{passive:!0,capture:!0})}async function E(a,d){q?(a=a.filter(c=>c!==d),alert("\u274c \u7981\u7528\u81ea\u52d5\u589e\u5e45")):(a.push(d),alert("\u2705 \u555f\u7528\u81ea\u52d5\u589e\u5e45"));n("set","\u555f\u7528\u7db2\u57df",a);location.reload()}function n(a,d,c=null){return{__verify:b=>void 0!==b?b:null,set:function(b,e){return GM_setValue(b,e)},get:function(b,e){return this.__verify(GM_getValue(b,e))},setjs:function(b,e){return GM_setValue(b,JSON.stringify(e,null,
4))},getjs:function(b,e){return JSON.parse(this.__verify(GM_getValue(b,e)))}}[a](d,c)}}})();