Simon Legner created IMAGING-179:
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Summary: Adding a directory causes "APP1 Segment is too long"
Key: IMAGING-179
URL: https://issues.apache.org/jira/browse/IMAGING-179
Project: Commons Imaging
Issue Type: Bug
Components: Format: JPEG
Reporter: Simon Legner
SVN revision: 1696444
The following snippet causes {{ExifRewriter$ExifOverflowException: APP1 Segment
is too long: 65548}}
{code:java}
final File in = new File("123.jpg");
final TiffImageMetadata exif = ((JpegImageMetadata)
Imaging.getMetadata(in)).getExif();
final TiffOutputSet outputSet = exif.getOutputSet();
outputSet.getOrCreateGPSDirectory().add(GpsTagConstants.GPS_TAG_GPS_IMG_DIRECTION,
RationalNumber.valueOf(123));
new ExifRewriter().updateExifMetadataLossless(in, new ByteArrayOutputStream(),
outputSet);
{code}
When inspecting the EXIF data using {{jhead -exifmap 123.jpg}}, the header
reveals unfilled space between 47198 and 65526. Nevertheless, this space is not
used, but instead the GPS directory is being appended starting at offset 65526.
{code}
Map: 00008-00182: Directory
Map: 00184-00202: Data for tag 010f
Map: 00204-00214: Data for tag 0110
Map: 00216-00224: Data for tag 011a
Map: 00224-00232: Data for tag 011b
Map: 00232-00242: Data for tag 0131
Map: 00244-00264: Data for tag 0132
Map: 00264-00280: Data for tag 013e
Map: 00280-00328: Data for tag 013f
Map: 00328-00352: Data for tag 0211
Map: 00352-00850: Directory
Map: 00852-00860: Data for tag 829a
Map: 00860-00868: Data for tag 829d
Map: 00868-00888: Data for tag 9003
Map: 00888-00908: Data for tag 9004
Map: 00908-00916: Data for tag 9102
Map: 00916-00924: Data for tag 9204
Map: 00924-00932: Data for tag 9205
Map: 00932-00940: Data for tag 920a
Map: 01008-35518: Data for tag 927c
Map: 00940-00984: Data for tag 9286
Map: 35518-35548: Directory
Map: 00984-00992: Data for tag a302
Map: 00992-01000: Data for tag a404
Map: 01000-01008: Data for tag a500
Map: 35568-35658: Directory
Map: 35660-35668: Data for tag 011a
Map: 35668-35676: Data for tag 011b
Map: 35676-47197: Thumbnail
Map: 65526- End of exif
{code}
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