Merge pull request #562 from zxing-js/bugfix/552-readback

Bugfix/552 readback
zxing-js · Apr 19, 2023 · 72a7cfb · 72a7cfb
2 parents 5c6c504 + 414c0ae
commit 72a7cfb
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Showing 4 changed files with 12 additions and 7 deletions.
diff --git a/package.json b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@zxing/library",
-  "version": "0.19.2",
+  "version": "0.19.3",
   "description": "TypeScript port of ZXing multi-format 1D/2D barcode image processing library.",
   "keywords": [
     "reader",

diff --git a/src/browser/BrowserCodeReader.ts b/src/browser/BrowserCodeReader.ts
@@ -871,7 +871,12 @@ export class BrowserCodeReader {
 
     if (!this.captureCanvasContext) {
       const elem = this.getCaptureCanvas(mediaElement);
-      const ctx = elem.getContext('2d');
+      let ctx;
+      try {
+        ctx = elem.getContext('2d', {willReadFrequently: true}) as CanvasRenderingContext2D;
+      } catch (e) {
+        ctx = elem.getContext('2d');
+      }
       this.captureCanvasContext = ctx;
     }
 

diff --git a/src/core/common/detector/MathUtils.ts b/src/core/common/detector/MathUtils.ts
@@ -33,7 +33,7 @@ export default class MathUtils {
    * @return nearest {@code int}
    */
   public static round(d: number/*float*/): number /*int*/ {
-    if (NaN === d) return 0;
+    if (isNaN(d)) return 0;
     if (d <= Number.MIN_SAFE_INTEGER) return Number.MIN_SAFE_INTEGER;
     if (d >= Number.MAX_SAFE_INTEGER) return Number.MAX_SAFE_INTEGER;
     return /*(int) */(d + (d < 0.0 ? -0.5 : 0.5)) | 0;

diff --git a/yarn.lock b/yarn.lock
@@ -4820,10 +4820,10 @@ trim-newlines@^1.0.0:
   resolved "https://registry.yarnpkg.com/trim-newlines/-/trim-newlines-1.0.0.tgz#5887966bb582a4503a41eb524f7d35011815a613"
   integrity sha1-WIeWa7WCpFA6QetST301ARgVphM=
 
-ts-custom-error@^3.0.0:
-  version "3.1.1"
-  resolved "https://registry.yarnpkg.com/ts-custom-error/-/ts-custom-error-3.1.1.tgz#d30c7415461dac93dc2cc9e9eb2dae92e6423901"
-  integrity sha512-f/syoy+pTE4z82qaiRuthEeZtCGNKzlfs0Zc8jpQFcz/CYMaFSwFSdfFt1sSFnPlDLOEm7RCROdIxZ44N8UlwA==
+ts-custom-error@^3.2.1:
+  version "3.3.1"
+  resolved "https://registry.yarnpkg.com/ts-custom-error/-/ts-custom-error-3.3.1.tgz#8bd3c8fc6b8dc8e1cb329267c45200f1e17a65d1"
+  integrity sha512-5OX1tzOjxWEgsr/YEUWSuPrQ00deKLh6D7OTWcvNHm12/7QPyRh8SYpyWvA4IZv8H/+GQWQEh/kwo95Q9OVW1A==
 
 ts-node@^9.0.0:
   version "9.0.0"