feat: allow multiple barcodes to be decoded

src/barcode_decoder.js

@@ -267,14 +267,25 @@ export default {
                 return decodeFromBoundingBox(box);
             },
             decodeFromBoundingBoxes: function(boxes) {
-                var i, result;
+                var i, result, barcodes = [];
                 for ( i = 0; i < boxes.length; i++) {
                     result = decodeFromBoundingBox(boxes[i]);
                     if (result && result.codeResult) {
                         result.box = boxes[i];
-                        return result;
+
+                        if (!config.multiple) {
+                            return result;
+                        }
+
+                        barcodes.push(result);
                     }
                 }
+
+                if (config.multiple) {
+                    return {
+                        barcodes
+                    };
+                }
             },
             setReaders: function(readers) {
                 config.readers = readers;

src/quagga.js

@@ -168,10 +168,16 @@ function transformResult(result) {
         return;
     }
 
+    if (result.barcodes) {
+        for (i = 0; i < result.barcodes.length; i++) {
+            transformResult(result.barcodes[i]);
+        }
+    }
 
     if (result.line && result.line.length === 2) {
         moveLine(result.line);
     }
+
     if (result.boxes && result.boxes.length > 0) {
         for (i = 0; i < result.boxes.length; i++) {
             moveBox(result.boxes[i]);
@@ -195,14 +201,29 @@ function transformResult(result) {
     }
 }
 
+function addResult (result, imageData) {
+    var i;
+
+    if (!imageData || !result || !_resultCollector) {
+        return;
+    }
+
+    if (result.barcodes) {
+        for (i = 0; i < result.barcodes.length; i++) {
+            addResult(result.barcodes[i], imageData);
+        }
+        return;
+    }
+
+    if (result.codeResult) {
+        _resultCollector.addResult(imageData, _inputStream.getCanvasSize(), result.codeResult);
+    }
+}
+
 function publishResult(result, imageData) {
     if (_onUIThread) {
         transformResult(result);
-        if (imageData && result && result.codeResult) {
+        addResult(result, imageData);
-            if (_resultCollector) {
-                _resultCollector.addResult(imageData, _inputStream.getCanvasSize(), result.codeResult);
-            }
-        }
     }
 
     Events.publish("processed", result);