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YouTube CPU負載減輕工具 – 混合策略（改良版）

採用混合DOMMutation與requestAnimationFrame策略，動態切換並修正延遲，降低YouTube的CPU負載

  1. // ==UserScript==
  2. // @name         YouTube CPU Tamer – Hybrid Edition (Improved)
  3. // @name:ja      YouTube CPU負荷軽減スクリプト – ハイブリッド方式（改良版）
  4. // @name:en      YouTube CPU Tamer – Hybrid Edition (Improved)
  5. // @name:zh-CN   YouTube CPU减负脚本 – 混合策略（改进版）
  6. // @name:zh-TW   YouTube CPU負載減輕工具 – 混合策略（改良版）
  7. // @name:ko      YouTube CPU 부하 감소 스크립트 – 하이브리드 방식(개선판)
  8. // @name:fr      Réducteur de charge CPU YouTube – Édition Hybride (Améliorée)
  9. // @name:es      Reductor de carga de CPU para YouTube – Edición Híbrida (Mejorada)
  10. // @name:de      YouTube CPU-Last-Reduzierer – Hybrid-Edition (Verbessert)
  11. // @name:pt-BR   Redutor de uso da CPU no YouTube – Edição Híbrida (Aprimorada)
  12. // @name:ru      Снижение нагрузки на CPU в YouTube – Гибридная версия (Улучшенная)
  13. // @version      4.50
  14. // @description         Reduce CPU load on YouTube using hybrid DOMMutation + AnimationFrame strategy with dynamic switching and delay correction
  15. // @description:ja      DOM変化とrequestAnimationFrameを組み合わせたハイブリッド戦略でYouTubeのCPU負荷を大幅軽減！遅延補正＆動的切替も搭載。
  16. // @description:en      Reduce CPU load on YouTube using hybrid DOMMutation + AnimationFrame strategy with dynamic switching and delay correction
  17. // @description:zh-CN   使用混合DOMMutation和requestAnimationFrame策略动态切换并校正延迟，降低YouTube的CPU负载
  18. // @description:zh-TW   採用混合DOMMutation與requestAnimationFrame策略，動態切換並修正延遲，降低YouTube的CPU負載
  19. // @description:ko      DOM 변화 감지 + 애니메이션 프레임 전략으로 YouTube CPU 부하 감소, 지연 보정 및 동적 전환 포함
  20. // @description:fr      Réduisez la charge CPU de YouTube avec une stratégie hybride DOMMutation + AnimationFrame, avec commutation dynamique et correction du délai
  21. // @description:es      Reduce la carga de CPU en YouTube mediante una estrategia híbrida de DOMMutation y AnimationFrame, con conmutación dinámica y corrección de retrasos
  22. // @description:de      Reduzieren Sie die CPU-Last von YouTube mit einer hybriden DOMMutation + AnimationFrame-Strategie mit dynamischem Wechsel und Verzögerungskorrektur
  23. // @description:pt-BR   Reduza o uso da CPU no YouTube com uma estratégia híbrida DOMMutation + AnimationFrame com troca dinâmica e correção de atraso
  24. // @description:ru      Снижение нагрузки на CPU в YouTube с помощью гибридной стратегии DOMMutation + requestAnimationFrame с динамическим переключением и коррекцией задержки
  25. // @namespace    https://github.com/koyasi777/youtube-cpu-tamer-hybrid
  26. // @author       koyasi777
  27. // @match        https://www.youtube.com/*
  28. // @match        https://www.youtube.com/embed/*
  29. // @match        https://www.youtube-nocookie.com/embed/*
  30. // @match        https://music.youtube.com/*
  31. // @run-at       document-start
  32. // @grant        none
  33. // @inject-into  page
  34. // @license      MIT
  35. // @icon         https://www.google.com/s2/favicons?sz=64&domain=youtube.com
  36. // @homepageURL  https://github.com/koyasi777/youtube-cpu-tamer-hybrid
  37. // @supportURL   https://github.com/koyasi777/youtube-cpu-tamer-hybrid/issues
  38. // ==/UserScript==
  39.  
  40. (() => {
  41.   "use strict";
  42.  
  43.   const FLAG = "__yt_cpu_tamer_hybrid_running__";
  44.   if (window[FLAG]) return;
  45.   window[FLAG] = true;
  46.  
  47.   const nextAnimationFrame = () => new Promise(r => requestAnimationFrame(r));
  48.   const waitForDocReady = async () => {
  49.     while (!document.documentElement || !document.head) {
  50.       await nextAnimationFrame();
  51.     }
  52.   };
  53.  
  54.   const PromiseExt = (() => {
  55.     let _res, _rej;
  56.     const shim = (r, j) => { _res = r; _rej = j; };
  57.     return class extends Promise {
  58.       constructor(cb = shim) {
  59.         super(cb);
  60.         if (cb === shim) {
  61.           // @ts-ignore
  62.           this.resolve = _res;
  63.           // @ts-ignore
  64.           this.reject = _rej;
  65.         }
  66.       }
  67.     };
  68.   })();
  69.  
  70.   const setup = async () => {
  71.     await waitForDocReady();
  72.  
  73.     const FRAME_ID = "yt-cpu-tamer-timer-frame";
  74.     let frame = document.getElementById(FRAME_ID);
  75.     if (frame && (!frame.contentWindow || !frame.contentWindow.setTimeout)) {
  76.       frame.remove();
  77.       frame = null;
  78.     }
  79.     if (!frame) {
  80.       frame = document.createElement("iframe");
  81.       frame.id = FRAME_ID;
  82.       frame.style.display = "none";
  83.       frame.sandbox = "allow-same-origin allow-scripts";
  84.       frame.srcdoc = "<!doctype html><title>yt-cpu-tamer</title>";
  85.       document.documentElement.appendChild(frame);
  86.     }
  87.     while (!frame.contentWindow) {
  88.       await nextAnimationFrame();
  89.     }
  90.  
  91.     const {
  92.       requestAnimationFrame: frameRAF,
  93.       setTimeout: frameSetTimeout,
  94.       setInterval: frameSetInterval,
  95.       clearTimeout: frameClearTimeout,
  96.       clearInterval: frameClearInterval
  97.     } = frame.contentWindow;
  98.  
  99.     const DUMMY_ID = "yt-cpu-tamer-trigger-node";
  100.     let dummy = document.getElementById(DUMMY_ID);
  101.     if (!dummy) {
  102.       dummy = document.createElement("div");
  103.       dummy.id = DUMMY_ID;
  104.       dummy.style.display = "none";
  105.       document.documentElement.appendChild(dummy);
  106.     }
  107.  
  108.     let timersAreNative = document.visibilityState !== "visible";
  109.  
  110.     const makeHybridTrigger = () => {
  111.       if (document.visibilityState === "visible") {
  112.         return cb => {
  113.           const p = new PromiseExt();
  114.           requestAnimationFrame(p.resolve);
  115.           return p.then(cb);
  116.         };
  117.       } else {
  118.         return cb => {
  119.           const p = new PromiseExt();
  120.           const MO = new MutationObserver(() => {
  121.             MO.disconnect();
  122.             p.resolve();
  123.           });
  124.           MO.observe(dummy, { attributes: true });
  125.           dummy.setAttribute("data-yt-cpu-tamer", Math.random().toString(36));
  126.           return p.then(cb);
  127.         };
  128.       }
  129.     };
  130.  
  131.     /** @type {(cb: () => void) => Promise<void>} */
  132.     let currentTrigger = makeHybridTrigger();
  133.  
  134.     const VC_LISTENER_FLAG = "__yt_cpu_tamer_visibility_listener__";
  135.     if (!window[VC_LISTENER_FLAG]) {
  136.       document.addEventListener("visibilitychange", () => {
  137.         timersAreNative = document.visibilityState !== "visible";
  138.         currentTrigger = makeHybridTrigger();
  139.       });
  140.       window[VC_LISTENER_FLAG] = true;
  141.     }
  142.  
  143.     const activeTimeouts = new Set();
  144.     const activeIntervals = new Set();
  145.  
  146.     const makeTimer = (nativeTimer, pool) => {
  147.       return function patchedTimer(fn, delay = 0, ...args) {
  148.         if (typeof fn !== "function" || timersAreNative) {
  149.           return nativeTimer(fn, delay, ...args);
  150.         }
  151.         const id = nativeTimer(() => {
  152.           currentTrigger(() => fn.apply(window, args));
  153.         }, delay);
  154.         pool.add(id);
  155.         return id;
  156.       };
  157.     };
  158.  
  159.     const makeClear = (nativeClear, pool) => id => {
  160.       if (pool.has(id)) pool.delete(id);
  161.       nativeClear(id);
  162.     };
  163.  
  164.     const patchTimers = () => {
  165.       const alreadyPatched = "__yt_cpu_tamer_timers_patched__";
  166.       if (window[alreadyPatched]) return;
  167.       window[alreadyPatched] = true;
  168.  
  169.       window.setTimeout = makeTimer(frameSetTimeout, activeTimeouts);
  170.       window.setInterval = makeTimer(frameSetInterval, activeIntervals);
  171.       window.clearTimeout = makeClear(frameClearTimeout, activeTimeouts);
  172.       window.clearInterval = makeClear(frameClearInterval, activeIntervals);
  173.  
  174.       const mirrorToString = (patched, native) => {
  175.         try {
  176.           patched.toString = native.toString.bind(native);
  177.         } catch {/* ignore */}
  178.       };
  179.       mirrorToString(window.setTimeout, frameSetTimeout);
  180.       mirrorToString(window.setInterval, frameSetInterval);
  181.       mirrorToString(window.clearTimeout, frameClearTimeout);
  182.       mirrorToString(window.clearInterval, frameClearInterval);
  183.  
  184.       console.log("[YouTube CPU Tamer – Hybrid Edition] Timers patched");
  185.     };
  186.  
  187.     if (document.readyState === "loading") {
  188.       document.addEventListener("DOMContentLoaded", patchTimers, { once: true });
  189.     } else {
  190.       patchTimers();
  191.     }
  192.  
  193.     window.addEventListener("yt-navigate-finish", () => {
  194.       console.log("[YouTube CPU Tamer] yt-navigate-finish – re‑applying patch");
  195.       timersAreNative = true;
  196.       setTimeout(() => {
  197.         timersAreNative = document.visibilityState !== "visible";
  198.         currentTrigger = makeHybridTrigger();
  199.       }, 5000); // Safety delay before re-enabling hybrid mode
  200.       patchTimers();
  201.     });
  202.   };
  203.  
  204.   setup().catch(err => console.error("[YouTube CPU Tamer] setup failed", err));
  205. })();