优化虚拟时间环境重写

Vinlic · Nov 23, 2023 · 403e493 · 403e493
1 parent 6448728
commit 403e493
Showing 1 changed file with 16 additions and 1 deletion.
diff --git a/core/CaptureContext.js b/core/CaptureContext.js
@@ -22,6 +22,8 @@ export default class CaptureContext {
     frameInterval = 0;
     /** @type {boolean} - 准备完毕标志 */
     readyFlag = false;
+    /** @type {boolean} - 启动标志 */
+    startFlag = false;
     /** @type {boolean} - 停止标志 */
     stopFlag = false;
     /** @type {boolean} - 暂停标志 */
@@ -51,6 +53,7 @@ export default class CaptureContext {
         /** @type {number} - 目标总帧数 */
         frameCount: null
     };
+    skipFramePromise;
     /** @type {SvgAnimation[]|VideoCanvas[]|DynamicImage[]|LottieCanvas[]} - 媒体调度列表 */
     dispatchMedias = [];
 
@@ -119,6 +122,8 @@ export default class CaptureContext {
         this.startTime = Date.now();
         // 计算帧间隔时间
         this.frameInterval = 1000 / this.config.fps;
+        // 设置启动标志
+        this.startFlag = true;
         // 递归捕获帧
         (function nextFrame() {
             (async () => {
@@ -350,6 +355,8 @@ export default class CaptureContext {
         window.____setInterval = window.setInterval;
         // 重写setInterval函数
         window.setInterval = (fn, interval) => {
+            if(!this.startFlag)
+                return window.____setInterval(fn, interval);
             if (typeof fn !== "function")
                 throw new TypeError("setInterval function must be Function");
             if (isNaN(interval))
@@ -363,16 +370,21 @@ export default class CaptureContext {
         // 重写cleanInterval函数
         window.clearInterval = timerId => {
             if (!timerId) return;
+            if(!this.startFlag)
+                return window.____clearInterval(timerId);
             this.intervalCallbacks = this.intervalCallbacks.filter(([_timerId]) => {
                 if (_timerId == timerId)
                     return false;
                 return true;
             });
+            window.____clearInterval(timerId);
         }
         // 暂存setTimeout函数
         window.____setTimeout = window.setTimeout;
         // 重写setTimeout函数
         window.setTimeout = (fn, timeout = 0) => {
+            if(!this.startFlag)
+                return window.____setTimeout(fn, timeout);
             if (typeof fn !== "function")
                 return;
             this.timerId++;
@@ -384,11 +396,14 @@ export default class CaptureContext {
         // 重写clearTimeout函数
         window.clearTimeout = timerId => {
             if (!timerId) return;
+            if(!this.startFlag)
+                return window.____clearTimeout(timerId);
             this.timeoutCallbacks = this.timeoutCallbacks.filter(([_timerId]) => {
                 if (_timerId == timerId)
                     return false;
                 return true;
             });
+            window.____clearTimeout(timerId);
         }
         // 暂存requestAnimationFrame函数
         window.____requestAnimationFrame = window.requestAnimationFrame;
@@ -397,7 +412,7 @@ export default class CaptureContext {
             if (this.stopFlag)
                 return;
             // 下一个事件循环再调用
-            window.____requestAnimationFrame(() => fn(this.currentTime));
+            return window.____requestAnimationFrame(rawCurrentTime => fn(this.startFlag ? this.currentTime : rawCurrentTime));
         };
         // 暂存Date对象
         window.____Date = Date;