Move the maxImageSize option from the global PDFJS object and into getDocument instead

src/core/worker.js

@@ -614,7 +614,7 @@ var WorkerMessageHandler = {
 
       var evaluatorOptions = {
         forceDataSchema: data.disableCreateObjectURL,
-        maxImageSize: data.maxImageSize === undefined ? -1 : data.maxImageSize,
+        maxImageSize: data.maxImageSize,
         disableFontFace: data.disableFontFace,
         nativeImageDecoderSupport: data.nativeImageDecoderSupport,
         ignoreErrors: data.ignoreErrors,

src/display/api.js

@@ -150,6 +150,9 @@ function setPDFNetworkStreamFactory(pdfNetworkStreamFactory) {
  *   `getOperatorList`, `getTextContent`, and `RenderTask`, when the associated
  *   PDF data cannot be successfully parsed, instead of attempting to recover
  *   whatever possible of the data. The default value is `false`.
+ * @property {number} maxImageSize - (optional) The maximum allowed image size
+ *   in total pixels, i.e. width * height. Images above this value will not be
+ *   rendered. Use -1 for no limit, which is also the default value.
  */
 
 /**
@@ -195,7 +198,7 @@ function getDocument(src) {
     source = src;
   }
 
-  var params = {};
+  let params = Object.create(null);
   var rangeTransport = null;
   let worker = null;
   var CMapReaderFactory = DOMCMapReaderFactory;
@@ -237,11 +240,14 @@ function getDocument(src) {
   params.rangeChunkSize = params.rangeChunkSize || DEFAULT_RANGE_CHUNK_SIZE;
   params.ignoreErrors = params.stopAtErrors !== true;
 
-  const nativeImageDecoderValues = Object.values(NativeImageDecoding);
+  const NativeImageDecoderValues = Object.values(NativeImageDecoding);
   if (params.nativeImageDecoderSupport === undefined ||
-      !nativeImageDecoderValues.includes(params.nativeImageDecoderSupport)) {
+      !NativeImageDecoderValues.includes(params.nativeImageDecoderSupport)) {
     params.nativeImageDecoderSupport = NativeImageDecoding.DECODE;
   }
+  if (!Number.isInteger(params.maxImageSize)) {
+    params.maxImageSize = -1;
+  }
 
   // Set the main-thread verbosity level.
   setVerbosityLevel(params.verbosity);
@@ -327,7 +333,7 @@ function _fetchDocument(worker, source, pdfDataRangeTransport, docId) {
       rangeChunkSize: source.rangeChunkSize,
       length: source.length,
     },
-    maxImageSize: getDefaultSetting('maxImageSize'),
+    maxImageSize: source.maxImageSize,
     disableFontFace: getDefaultSetting('disableFontFace'),
     disableCreateObjectURL: getDefaultSetting('disableCreateObjectURL'),
     postMessageTransfers: worker.postMessageTransfers,

src/display/dom_utils.js

@@ -349,8 +349,6 @@ function getDefaultSetting(id) {
       return globalSettings ? globalSettings.cMapUrl : null;
     case 'cMapPacked':
       return globalSettings ? globalSettings.cMapPacked : false;
-    case 'maxImageSize':
-      return globalSettings ? globalSettings.maxImageSize : -1;
     case 'isEvalSupported':
       return globalSettings ? globalSettings.isEvalSupported : true;
     default:

src/display/global.js

@@ -65,14 +65,6 @@ PDFJS.Util = Util;
 PDFJS.PageViewport = PageViewport;
 PDFJS.createPromiseCapability = createPromiseCapability;
 
-/**
- * The maximum allowed image size in total pixels e.g. width * height. Images
- * above this value will not be drawn. Use -1 for no limit.
- * @var {number}
- */
-PDFJS.maxImageSize = (PDFJS.maxImageSize === undefined ?
-                      -1 : PDFJS.maxImageSize);
-
 /**
  * The url of where the predefined Adobe CMaps are located. Include trailing
  * slash.