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

1 files changed, 13 insertions, 1 deletions

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));