Uint8Array AddImage Support (#1918)

Make getImageFileTypeByImageData() ArrayBuffer compatible

plugins/addimage.js

@@ -78,6 +78,10 @@
 		var compareResult; 
 		var fileType;
 
+		if (jsPDFAPI.isArrayBufferView(imageData)) {
+			imageData = jsPDFAPI.arrayBufferToBinaryString(imageData);
+		}
+
 		for (fileType in imageFileTypeHeaders) {
 			headerSchemata = imageFileTypeHeaders[fileType];
 			for (i = 0; i < headerSchemata.length; i += 1) {

tests/addimage/Uint8Array.spec.js

@@ -0,0 +1,42 @@
+'use strict'
+/* global describe, it, jsPDF, comparePdf, expect */
+/**
+ * Standard spec tests
+ */
+
+describe('Plugin: addimage filetypeRecognition', () => {
+
+
+  function convertDataURIToBinary(dataURI) {
+    var BASE64_MARKER = ';base64,';
+    var base64Index = dataURI.indexOf(BASE64_MARKER) + BASE64_MARKER.length;
+    var base64 = dataURI.substring(base64Index);
+    var raw = window.atob(base64);
+    var rawLength = raw.length;
+    var array = new Uint8Array(new ArrayBuffer(rawLength));
+    var i = 0;
+
+    for(i = 0; i < rawLength; i++) {
+      array[i] = raw.charCodeAt(i);
+    }
+    return array;
+  }
+
+  var jpgImage = 'data:image/jpeg;base64,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';
+  var jpgImageUint8Array = convertDataURIToBinary(jpgImage);
+
+	it('Uint8Array: getImageFileTypeByImageData', () => {
+    expect(jsPDF.API.getImageFileTypeByImageData(jpgImageUint8Array)).toEqual("JPEG");
+	});
+
+	it('Uint8Array: addImagae', () => {
+	    const doc = new jsPDF('p', 'pt', 'a4', false);
+	    doc.addImage(jpgImageUint8Array, 'JPEG', 15, 40, 1, 1);
+
+	    comparePdf(doc.output(), 'blackpixel.pdf', 'addimage')
+	});
+
+
+
+
+});