Handle Palette Color images where LUT has been returned as InlineBinary (#1350) (#1401)

platform/core/src/studies/services/wado/studyInstanceHelpers.js

@@ -337,10 +337,49 @@ async function makeSOPInstance(server, study, instance) {
   return sopInstance;
 }
 
+/**
+ * Convert String to ArrayBuffer
+ *
+ * @param {String} str Input String
+ * @return {ArrayBuffer} Output converted ArrayBuffer
+ */
+function str2ab(str) {
+  const strLen = str.length;
+  const bytes = new Uint8Array(strLen);
+
+  for (let i = 0; i < strLen; i++) {
+    bytes[i] = str.charCodeAt(i);
+  }
+
+  return bytes.buffer;
+}
+
 function getPaletteColor(server, instance, tag, lutDescriptor) {
   const numLutEntries = lutDescriptor[0];
   const bits = lutDescriptor[2];
 
+  const readUInt16 = (byteArray, position) => {
+    return byteArray[position] + byteArray[position + 1] * 256;
+  };
+
+  const arrayBufferToPaletteColorLUT = arraybuffer => {
+    const byteArray = new Uint8Array(arraybuffer);
+    const lut = [];
+
+    if (bits === 16) {
+      for (let i = 0; i < numLutEntries; i++) {
+        lut[i] = readUInt16(byteArray, i * 2);
+      }
+    } else {
+      for (let i = 0; i < numLutEntries; i++) {
+        lut[i] = byteArray[i];
+      }
+    }
+
+    return lut;
+  };
+
+  if (instance[tag].BulkDataURI) {
     let uri = WADOProxy.convertURL(instance[tag].BulkDataURI, server);
 
     // TODO: Workaround for dcm4chee behind SSL-terminating proxy returning
@@ -358,27 +397,20 @@ function getPaletteColor(server, instance, tag, lutDescriptor) {
       BulkDataURI: uri,
     };
 
-  const readUInt16 = (byteArray, position) => {
+    return dicomWeb
-    return byteArray[position] + byteArray[position + 1] * 256;
+      .retrieveBulkData(options)
-  };
+      .then(result => result[0])
+      .then(arrayBufferToPaletteColorLUT);
+  } else if (instance[tag].InlineBinary) {
+    const inlineBinaryData = atob(instance[tag].InlineBinary);
+    const arraybuf = str2ab(inlineBinaryData);
 
-  const arrayBufferToPaletteColorLUT = result => {
+    return arrayBufferToPaletteColorLUT(arraybuf);
-    const arraybuffer = result[0];
-    const byteArray = new Uint8Array(arraybuffer);
-    const lut = [];
-
-    for (let i = 0; i < numLutEntries; i++) {
-      if (bits === 16) {
-        lut[i] = readUInt16(byteArray, i * 2);
-      } else {
-        lut[i] = byteArray[i];
-      }
   }
 
-    return lut;
+  throw new Error(
-  };
+    'Palette Color LUT was not provided as InlineBinary or BulkDataURI'
-
+  );
-  return dicomWeb.retrieveBulkData(options).then(arrayBufferToPaletteColorLUT);
 }
 
 /**