feat: v0.7.0 添加释放方法

Author: leidenglai

README.md

@@ -72,6 +72,11 @@ OpencvQr暴露一个加载方法和三个使用方法, 支持typescript类型 Op
   // 返回已识别的二维码图像相对于原图的位置信息 坐标和宽高
   const sizes = result?.getSizes();
 
+  // 清除加载图片，释放内存
+  result?.clear(); 
+  // or
+  cvQr.clear();
+
 ```
 
 

dist/OpencvQr.d.ts

@@ -45,5 +45,9 @@ declare class OpencvQr {
         w: number;
         h: number;
     }[];
+    /**
+     * 清理加载数据，释放内存
+     */
+    clear(): void;
 }
 export default OpencvQr;

dist/OpencvQr.js

@@ -35,7 +35,8 @@
       </div>
     </div>
     <hr />
-    <button id="qrcodeTryIt">Try it OpenCV</button><br />
+    <button id="qrcodeTryIt">Try it OpenCV</button>
+    <button id="qrcodeClear">Clear</button><br />
     <div id="status-wrap">识别结果:<span id="status"></span></div>
     <hr />
     <div>

example/index.html

@@ -49,6 +49,10 @@ document.getElementById("qrcodeTryIt")?.addEventListener("click", () => {
   });
 });
 
+document.getElementById("qrcodeClear")?.addEventListener("click", () => {
+  cvQr.clear();
+});
+
 function qrcodeHandleFiles(e) {
   const file = e.target.files[0];
   const qrcodeUrl = URL.createObjectURL(file);

example/index.ts

@@ -1,6 +1,6 @@
 {
     "name": "opencv-qr",
-    "version": "0.6.0",
+    "version": "0.7.0",
     "description": "You can use Opencv JS to decode QR codes in photos.",
     "main": "./dist/OpencvQr.js",
     "types": "./dist/OpencvQr.d.ts",
@@ -12,8 +12,8 @@
         "test": "echo \"Error: no test specified\" && exit 1"
     },
     "prettier": {
-      "printWidth": 120,
-      "tabWidth": 2
+        "printWidth": 120,
+        "tabWidth": 2
     },
     "repository": {
         "type": "git",

package.json

@@ -193,6 +193,19 @@ class OpencvQr {
 
     return result;
   }
+
+  /**
+   * 清理加载数据，释放内存
+   */
+  clear() {
+    this.qrVec?.delete();
+    this.qrRes?.delete();
+    this.qrImage?.delete();
+
+    this.qrVec = undefined;
+    this.qrRes = undefined;
+    this.qrImage = undefined;
+  }
 }
 
 export default OpencvQr;