Break out of the loop if the marker length exceeds the data view length.

Use 256 KiB by default to parse the image meta data, which can be
overriden by the new configuration option maxMetaDataSize.

Author: blueimp

README.md

@@ -160,12 +160,13 @@ loadImage.parseMetaData(
         ], {type: resizedImage.type});
     },
     {
+        maxMetaDataSize: 262144,
         disableImageHead: false
     }
 );
 ```
 
-The third argument is an options object which allows to disable the imageHead creation and is also passed along to segment parsers registered via loadImage extensions, e.g. the Exif parser.
+The third argument is an options object which defines the maximum number of bytes to parse for the image meta data, allows to disable the imageHead creation and is also passed along to segment parsers registered via loadImage extensions, e.g. the Exif parser.
 
 **Note:**  
 Blob objects of resized images can be created via [canvas.toBlob()](https://github.com/blueimp/JavaScript-Canvas-to-Blob).

load-image-meta.js

@@ -1,5 +1,5 @@
 /*
- * JavaScript Load Image Meta 1.0
+ * JavaScript Load Image Meta 1.0.1
  * https://github.com/blueimp/JavaScript-Load-Image
  *
  * Copyright 2013, Sebastian Tschan
@@ -50,12 +50,13 @@
     loadImage.parseMetaData = function (file, callback, options) {
         options = options || {};
         var that = this,
+            // 256 KiB should contain all EXIF/ICC/IPTC segments:
+            maxMetaDataSize = options.maxMetaDataSize || 262144,
             data = {},
             noMetaData = !(window.DataView  && file && file.size >= 12 &&
                 file.type === 'image/jpeg' && loadImage.blobSlice);
         if (noMetaData || !loadImage.readFile(
-                // 128 KiB should contain all EXIF/ICC/IPTC segments:
-                loadImage.blobSlice.call(file, 0, 131072),
+                loadImage.blobSlice.call(file, 0, maxMetaDataSize),
                 function (e) {
                     // Note on endianness:
                     // Since the marker and length bytes in JPEG files are always
@@ -86,7 +87,7 @@
                                 markerLength = dataView.getUint16(offset + 2) + 2;
                                 if (offset + markerLength > dataView.byteLength) {
                                     console.log('Invalid meta data: Invalid segment size.');
-                                    continue;
+                                    break;
                                 }
                                 parsers = loadImage.metaDataParsers.jpeg[markerBytes];
                                 if (parsers) {