Author: tilman
Date: Mon Feb  2 21:52:21 2026
New Revision: 1931674

Log:
PDFBOX-6164: add fillorder 2, as suggested by Alexander Pinske

Modified:
   
pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/graphics/image/CCITTFactory.java
   
pdfbox/trunk/pdfbox/src/test/java/org/apache/pdfbox/pdmodel/graphics/image/CCITTFactoryTest.java

Modified: 
pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/graphics/image/CCITTFactory.java
==============================================================================
--- 
pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/graphics/image/CCITTFactory.java
        Mon Feb  2 21:52:16 2026        (r1931673)
+++ 
pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/graphics/image/CCITTFactory.java
        Mon Feb  2 21:52:21 2026        (r1931674)
@@ -297,6 +297,7 @@ public final class CCITTFactory
             
             int dataoffset = 0;
             int datalength = 0;
+            int fillorder = 1;
 
             for (int i = 0; i < numtags; i++)
             {
@@ -358,10 +359,12 @@ public final class CCITTFactory
                     }
                     case 266:
                     {
-                        if (val != 1)
+                        // 
http://www.awaresystems.be/imaging/tiff/tifftags/fillorder.html
+                        if (val != 1 && val != 2)
                         {
                             throw new IOException("FillOrder " + val + " is 
not supported");
                         }
+                        fillorder = val;
                         break;
                     }
                     case 273:
@@ -448,9 +451,15 @@ public final class CCITTFactory
             while ((amountRead = reader.read(buf, 0, Math.min(8192, 
datalength))) > 0)
             {
                 datalength -= amountRead;
+                if (fillorder == 2)
+                {
+                    for (int x = 0; x < amountRead; x++)
+                    {
+                        buf[x] = fliptable[buf[x] & 0xFF];
+                    }
+                }
                 os.write(buf, 0, amountRead);
             }
-
         }
     }
 
@@ -471,4 +480,40 @@ public final class CCITTFactory
         }
         return (raf.read() << 24) | (raf.read() << 16) | (raf.read() << 8) | 
raf.read();
     }
+
+    private static final byte[] fliptable = new byte[]
+    {
+        (byte) 0x00, (byte) 0x80, (byte) 0x40, (byte) 0xc0, (byte) 0x20, 
(byte) 0xa0, (byte) 0x60, (byte) 0xe0,
+        (byte) 0x10, (byte) 0x90, (byte) 0x50, (byte) 0xd0, (byte) 0x30, 
(byte) 0xb0, (byte) 0x70, (byte) 0xf0,
+        (byte) 0x08, (byte) 0x88, (byte) 0x48, (byte) 0xc8, (byte) 0x28, 
(byte) 0xa8, (byte) 0x68, (byte) 0xe8,
+        (byte) 0x18, (byte) 0x98, (byte) 0x58, (byte) 0xd8, (byte) 0x38, 
(byte) 0xb8, (byte) 0x78, (byte) 0xf8,
+        (byte) 0x04, (byte) 0x84, (byte) 0x44, (byte) 0xc4, (byte) 0x24, 
(byte) 0xa4, (byte) 0x64, (byte) 0xe4,
+        (byte) 0x14, (byte) 0x94, (byte) 0x54, (byte) 0xd4, (byte) 0x34, 
(byte) 0xb4, (byte) 0x74, (byte) 0xf4,
+        (byte) 0x0c, (byte) 0x8c, (byte) 0x4c, (byte) 0xcc, (byte) 0x2c, 
(byte) 0xac, (byte) 0x6c, (byte) 0xec,
+        (byte) 0x1c, (byte) 0x9c, (byte) 0x5c, (byte) 0xdc, (byte) 0x3c, 
(byte) 0xbc, (byte) 0x7c, (byte) 0xfc,
+        (byte) 0x02, (byte) 0x82, (byte) 0x42, (byte) 0xc2, (byte) 0x22, 
(byte) 0xa2, (byte) 0x62, (byte) 0xe2,
+        (byte) 0x12, (byte) 0x92, (byte) 0x52, (byte) 0xd2, (byte) 0x32, 
(byte) 0xb2, (byte) 0x72, (byte) 0xf2,
+        (byte) 0x0a, (byte) 0x8a, (byte) 0x4a, (byte) 0xca, (byte) 0x2a, 
(byte) 0xaa, (byte) 0x6a, (byte) 0xea,
+        (byte) 0x1a, (byte) 0x9a, (byte) 0x5a, (byte) 0xda, (byte) 0x3a, 
(byte) 0xba, (byte) 0x7a, (byte) 0xfa,
+        (byte) 0x06, (byte) 0x86, (byte) 0x46, (byte) 0xc6, (byte) 0x26, 
(byte) 0xa6, (byte) 0x66, (byte) 0xe6,
+        (byte) 0x16, (byte) 0x96, (byte) 0x56, (byte) 0xd6, (byte) 0x36, 
(byte) 0xb6, (byte) 0x76, (byte) 0xf6,
+        (byte) 0x0e, (byte) 0x8e, (byte) 0x4e, (byte) 0xce, (byte) 0x2e, 
(byte) 0xae, (byte) 0x6e, (byte) 0xee,
+        (byte) 0x1e, (byte) 0x9e, (byte) 0x5e, (byte) 0xde, (byte) 0x3e, 
(byte) 0xbe, (byte) 0x7e, (byte) 0xfe,
+        (byte) 0x01, (byte) 0x81, (byte) 0x41, (byte) 0xc1, (byte) 0x21, 
(byte) 0xa1, (byte) 0x61, (byte) 0xe1,
+        (byte) 0x11, (byte) 0x91, (byte) 0x51, (byte) 0xd1, (byte) 0x31, 
(byte) 0xb1, (byte) 0x71, (byte) 0xf1,
+        (byte) 0x09, (byte) 0x89, (byte) 0x49, (byte) 0xc9, (byte) 0x29, 
(byte) 0xa9, (byte) 0x69, (byte) 0xe9,
+        (byte) 0x19, (byte) 0x99, (byte) 0x59, (byte) 0xd9, (byte) 0x39, 
(byte) 0xb9, (byte) 0x79, (byte) 0xf9,
+        (byte) 0x05, (byte) 0x85, (byte) 0x45, (byte) 0xc5, (byte) 0x25, 
(byte) 0xa5, (byte) 0x65, (byte) 0xe5,
+        (byte) 0x15, (byte) 0x95, (byte) 0x55, (byte) 0xd5, (byte) 0x35, 
(byte) 0xb5, (byte) 0x75, (byte) 0xf5,
+        (byte) 0x0d, (byte) 0x8d, (byte) 0x4d, (byte) 0xcd, (byte) 0x2d, 
(byte) 0xad, (byte) 0x6d, (byte) 0xed,
+        (byte) 0x1d, (byte) 0x9d, (byte) 0x5d, (byte) 0xdd, (byte) 0x3d, 
(byte) 0xbd, (byte) 0x7d, (byte) 0xfd,
+        (byte) 0x03, (byte) 0x83, (byte) 0x43, (byte) 0xc3, (byte) 0x23, 
(byte) 0xa3, (byte) 0x63, (byte) 0xe3,
+        (byte) 0x13, (byte) 0x93, (byte) 0x53, (byte) 0xd3, (byte) 0x33, 
(byte) 0xb3, (byte) 0x73, (byte) 0xf3,
+        (byte) 0x0b, (byte) 0x8b, (byte) 0x4b, (byte) 0xcb, (byte) 0x2b, 
(byte) 0xab, (byte) 0x6b, (byte) 0xeb,
+        (byte) 0x1b, (byte) 0x9b, (byte) 0x5b, (byte) 0xdb, (byte) 0x3b, 
(byte) 0xbb, (byte) 0x7b, (byte) 0xfb,
+        (byte) 0x07, (byte) 0x87, (byte) 0x47, (byte) 0xc7, (byte) 0x27, 
(byte) 0xa7, (byte) 0x67, (byte) 0xe7,
+        (byte) 0x17, (byte) 0x97, (byte) 0x57, (byte) 0xd7, (byte) 0x37, 
(byte) 0xb7, (byte) 0x77, (byte) 0xf7,
+        (byte) 0x0f, (byte) 0x8f, (byte) 0x4f, (byte) 0xcf, (byte) 0x2f, 
(byte) 0xaf, (byte) 0x6f, (byte) 0xef,
+        (byte) 0x1f, (byte) 0x9f, (byte) 0x5f, (byte) 0xdf, (byte) 0x3f, 
(byte) 0xbf, (byte) 0x7f, (byte) 0xff,
+    };
 }

Modified: 
pdfbox/trunk/pdfbox/src/test/java/org/apache/pdfbox/pdmodel/graphics/image/CCITTFactoryTest.java
==============================================================================
--- 
pdfbox/trunk/pdfbox/src/test/java/org/apache/pdfbox/pdmodel/graphics/image/CCITTFactoryTest.java
    Mon Feb  2 21:52:16 2026        (r1931673)
+++ 
pdfbox/trunk/pdfbox/src/test/java/org/apache/pdfbox/pdmodel/graphics/image/CCITTFactoryTest.java
    Mon Feb  2 21:52:21 2026        (r1931674)
@@ -16,9 +16,13 @@
 package org.apache.pdfbox.pdmodel.graphics.image;
 
 import java.awt.image.BufferedImage;
+import java.io.ByteArrayInputStream;
 
 import java.io.File;
 import java.io.IOException;
+import java.net.MalformedURLException;
+import java.net.URI;
+import java.net.URISyntaxException;
 
 import java.nio.file.Files;
 import java.nio.file.StandardCopyOption;
@@ -273,4 +277,36 @@ class CCITTFactoryTest
             }
         }
     }
+
+    /**
+     * PDFBOX-6164: test support of TIFF-files with FillOrder=2
+     *
+     * @throws MalformedURLException
+     * @throws IOException
+     * @throws URISyntaxException 
+     */
+    @Test
+    void testFillOrder2() throws MalformedURLException, IOException, 
URISyntaxException
+    {
+        byte[] ba = new 
URI("https://issues.apache.org/jira/secure/attachment/12558110/Wing.tif";).
+                toURL().openStream().readAllBytes();
+        PDDocument document = new PDDocument();
+        PDImageXObject ximg = CCITTFactory.createFromByteArray(document, ba);
+
+        validate(ximg, 1, 4575, 2232, "tiff", PDDeviceGray.INSTANCE.getName());
+        BufferedImage bim = ImageIO.read(new ByteArrayInputStream(ba));
+        checkIdent(bim, ximg.getOpaqueImage(null, 1));
+        PDPage page = new PDPage(PDRectangle.A4);
+        document.addPage(page);
+        try (PDPageContentStream contentStream = new 
PDPageContentStream(document, page, AppendMode.APPEND, false))
+        {
+            contentStream.drawImage(ximg, 0, 0, ximg.getWidth() / 8, 
ximg.getHeight() / 8);
+        }
+        document.save(TESTRESULTSDIR + "/Wing.pdf");
+        document.close();
+
+        document = Loader.loadPDF(new File(TESTRESULTSDIR, "Wing.pdf"));
+        assertEquals(1, document.getNumberOfPages());
+        document.close();
+    }
 }

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