From 9590cd46a57072924c7cd16591dab3da7fbe6d2c Mon Sep 17 00:00:00 2001
From: opl <4833621+opl@users.noreply.github.com>
Date: Sat, 23 Nov 2024 11:28:47 +0100
Subject: [PATCH] Fix readers not reset by Browser*Readers, causing invalid
 results

---
 src/browser/BrowserCodeReader.ts        | 7 ++++++-
 src/browser/BrowserMultiFormatReader.ts | 7 ++++++-
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/src/browser/BrowserCodeReader.ts b/src/browser/BrowserCodeReader.ts
index b96c7469..02225796 100644
--- a/src/browser/BrowserCodeReader.ts
+++ b/src/browser/BrowserCodeReader.ts
@@ -1046,7 +1046,12 @@ export class BrowserCodeReader {
    * Call the encapsulated readers decode
    */
   public decodeBitmap(binaryBitmap: BinaryBitmap): Result {
-    return this.reader.decode(binaryBitmap, this._hints);
+    try {
+      return this.reader.decode(binaryBitmap, this._hints);
+    } finally {
+      // Readers need to be reset before being reused on another bitmap.
+      this.reader.reset();
+    }
   }
 
   /**
diff --git a/src/browser/BrowserMultiFormatReader.ts b/src/browser/BrowserMultiFormatReader.ts
index a983f14d..b8ab51c7 100644
--- a/src/browser/BrowserMultiFormatReader.ts
+++ b/src/browser/BrowserMultiFormatReader.ts
@@ -22,6 +22,11 @@ export class BrowserMultiFormatReader extends BrowserCodeReader {
    * attention to the hints set in the constructor function
    */
   public decodeBitmap(binaryBitmap: BinaryBitmap): Result {
-    return this.reader.decodeWithState(binaryBitmap);
+    try {
+      return this.reader.decodeWithState(binaryBitmap);
+    } finally {
+      // Readers need to be reset before being reused on another bitmap.
+      this.reader.reset();
+    }
   }
 }