From b1621bbb9d278d8a5c4631b5804bf6a61678ef41 Mon Sep 17 00:00:00 2001
From: tknall <tknall@7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c>
Date: Tue, 11 Jan 2011 10:18:13 +0000
Subject: Bugfix: TIFF based QR-Codes resulted in NPE.

git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/trunk@720 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c
---
 .../pdfas/placeholder/SignaturePlaceholderExtractor.java   | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/main/java/at/gv/egiz/pdfas/placeholder/SignaturePlaceholderExtractor.java b/src/main/java/at/gv/egiz/pdfas/placeholder/SignaturePlaceholderExtractor.java
index 85d14f8..c9d5cd7 100644
--- a/src/main/java/at/gv/egiz/pdfas/placeholder/SignaturePlaceholderExtractor.java
+++ b/src/main/java/at/gv/egiz/pdfas/placeholder/SignaturePlaceholderExtractor.java
@@ -236,8 +236,20 @@ public class SignaturePlaceholderExtractor extends PDFStreamEngine {
     */
    private SignaturePlaceholderData checkImage(PDXObjectImage image) throws IOException {
       BufferedImage bimg = image.getRGBImage();
-      if(bimg.getHeight() < 10 || bimg.getWidth() < 10)
+      if (bimg == null) {
+         String type = image.getSuffix();
+         if (type != null) {
+            type = type.toUpperCase() + " images";
+         } else {
+            type = "Image type";
+         }
+         log.info("Unable to extract image for QRCode analysis. " + type + " not supported. Add additional JAI Image filters to your classpath. Refer to https://jai.dev.java.net. Skipping image.");
+         return null;
+      }
+      if(bimg.getHeight() < 10 || bimg.getWidth() < 10) {
+         log.debug("Image too small for QRCode. Skipping image.");
          return null;
+      }
 
       LuminanceSource source = new BufferedImageLuminanceSource(bimg);
       BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
-- 
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