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From "Gunduz Can Topal (JIRA)" <j...@apache.org>
Subject [jira] Created: (SANSELAN-47) readDirectory method in TiffReader doesn't gracefully handle exceptions that can be thrown from readbytes methods.
Date Tue, 26 Oct 2010 15:16:20 GMT
readDirectory method in TiffReader doesn't gracefully handle exceptions that can be thrown
from readbytes methods.
------------------------------------------------------------------------------------------------------------------

                 Key: SANSELAN-47
                 URL: https://issues.apache.org/jira/browse/SANSELAN-47
             Project: Commons Sanselan
          Issue Type: Improvement
         Environment: ubuntu 8.0.4 java 1.6.0_11
            Reporter: Gunduz Can Topal


In case of a corrupt or faulty exif header, we should keep the well formed ones instead of
propagating an IOException or an OutofMemory Error to the caller. Attached is a picture taken
from an HTC handset, with a faulty exif thumbnail offset, causing an OutOfMemoryException.
the patch in SANSELAN-17 turns it into an IOException and the good fields are still being
lost.

i.e we should have the following data instead of an exception
Exif metadata:
Root: 
 Modify Date: '2010:10:05 22:51:03'
 Model: 'HTC Desire'
 Orientation: 0
 Unknown Tag (0x9209): 65535
 Unknown Tag (0x9208): 0
 Unknown Tag (0x9004): '2010:10:05 22:51:03'
 Unknown Tag (0x9207): 65535
 Unknown Tag (0xa403): 65535
 Image Height: 1552
 Image Width: 2592
 Make: 'HTC'
 Exif Offset: 222
 Unknown Tag (0xde): null
 Exif:  (jpegImageData)
 Preview Image Start: 252
 Preview Image Length: 0


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