安卓视频流校验二维码图

pages/beiyinmei/beiyinmei.js

@@ -47,24 +47,28 @@ Page({
         // 实时帧渲染到canvas
         await wx.canvasPutImageData({
           canvasId: 'myCanvas',
-          x:-frame.width / 4,
-          y:-frame.height / 3,
+          x:0,
+          y:0,
           width: frame.width,
           height: frame.height,
           data: new Uint8ClampedArray(frame.data),
         })
         const fileData = await wx.canvasToTempFilePath({
           canvasId: 'myCanvas',
-          x: 0,
-          y: 0,
-          width: frame.width,
-          height: frame.height,
+          x: frame.width / 4,
+          y: frame.height / 4,
+          width: frame.width / 2,
+          height: frame.height / 3,
           quality: 'high',
           fileType: 'jpg',
+          destWidth: frame.width / 2,
+          destHeight: frame.height / 3,
         })
         const base = fileSystem.readFileSync(fileData.tempFilePath, 'base64')
+        // console.log('qr_result',flag,5555,base);
+
         const qr_result = await that.handleCodeAnalysis(base)
-        console.log('qr_result',flag,5555,qr_result.data.codeinfo);
+        console.log('qr_result',flag,5555,qr_result.data);
         // 前端校验取消
         // const data = new Uint8ClampedArray(frame.data);
         // // const nData = data.slice(data.length / 4, data.length / 4 * 3)

pages/beiyinmei/beiyinmei.wxml

 <!--pages/beiyinmei/beiyinmei.wxml-->
 <view wx:if="{{!showPage}}" style="height: 100vh;width: 100vw;position: relative;z-index: 99;">
+<!-- <image src="{{src}}" mode="widthFix" style="position: absolute;top: 0px;left: 0px;z-index: 9999;"/> -->
   <camera device-position="back" frame-size="high" flash="on" style="width: 100%; height: 100%;" mode="normal">
     <view class="prompt">
       <image src="/assets/imgs/拍照框.png" style="width: 25%;" mode="widthFix" />
@@ -24,5 +25,5 @@
 </view>
 
 <view style="visibility: hidden;position: fixed;top: 99999px;left: 0px;">
-  <canvas canvas-id="myCanvas" id="myCanvas" style="width:500px;height:500px;" />
+  <canvas canvas-id="myCanvas" id="myCanvas" style="width:{{width}}px;height:{{height}}px;" />
 </view>