Retrieve FrameIncrementPointer as an attribute and FrameTimeVector as a float array via DICOMWeb and DIMSE

Packages/dicomweb/server/getAttribute.js

@@ -0,0 +1,44 @@
+/**
+ * Returns the specified element as a dicom attribute group/element.
+ *
+ * @param element - The group/element of the element (e.g. '00280009')
+ * @param [defaultValue] - The value to return if the element is not present
+ * @returns {*}
+ */
+DICOMWeb.getAttribute = function(element, defaultValue) {
+    if (!element) {
+        return defaultValue;
+    }
+    // Value is not present if the attribute has a zero length value
+    if (!element.Value) {
+        return defaultValue;
+    }
+    // Sanity check to make sure we have at least one entry in the array.
+    if (!element.Value.length) {
+        return defaultValue;
+    }
+
+    return convertToInt(element.Value);
+};
+
+function convertToInt(input) {
+    function padFour(input) {
+        var l = input.length;
+
+        if (l == 0) return '0000';
+        if (l == 1) return '000' + input;
+        if (l == 2) return '00' + input;
+        if (l == 3) return '0' + input;
+
+        return input;
+    }
+
+    var output = '';
+    for (var i = 0; i < input.length; i++) {
+        for (var j = 0; j < input[i].length; j++) {
+            output += padFour(input[i].charCodeAt(j).toString(16));
+        }
+    }
+
+    return parseInt(output, 16);
+}