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https://issues.apache.org/jira/browse/IMAGING-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16252539#comment-16252539
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Joakim Knudsen commented on IMAGING-205:
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I'm using Sanselan 0.97 for my project, since this is an Android app. The
details in this bug report, and the discussion at the Exiftool forum, all
relate to Sanselan. The main concern with the generated image (as attached in
this report) is that it corrupts the Maker Notes, and that it completely
restructures the metadata (compared to the original image). The odd offsets are
also a problem, but a relatively minor one.
I have also tested with Commons Imaging (in a separate, small test project) and
although the image still contains the odd offsets, it does look a lot better
than the one produced by Sanselan.
However, since I am dependant on an Android compatible library, I am hoping
this bug might be fixed in the Sanselan library. If that is not possible, I'd
like to know the status of making Commons Imaging available for Android?
Thanks again, and sorry for the confusion!
> Imaging (Apache Sanselan) produces "odd offsets" in (EXIF) metadata
> -------------------------------------------------------------------
>
> Key: IMAGING-205
> URL: https://issues.apache.org/jira/browse/IMAGING-205
> Project: Commons Imaging
> Issue Type: Bug
> Components: imaging.*
> Reporter: Joakim Knudsen
> Assignee: Bruno P. Kinoshita
> Priority: Critical
> Attachments: 20171030_21481_COPY.jpg,
> Gaboxjellyfish-changedexifmetadata.jpg, Gaboxjellyfish.jpg, after.html,
> before.html
>
>
> I'm using the "last stable version" of Apache Sanselan 0.97 in an Android
> project (app). I have not upgraded to Commons Imaging yet, since the website
> says there is no stable release yet. Meanwhile, there are bugs in Sanselan.
> If I run the [sample code method
> WriteExifMetadataExample.changeExifMetadata|http://svn.apache.org/repos/asf/commons/proper/sanselan/trunk/src/test/java/org/apache/sanselan/sampleUsage/WriteExifMetadataExample.java?p=820841]
> on an image, which updates the Apterture and GPS tags, the resulting image
> fails to validate (through Phil Harvey's [ExifTool
> software|https://sno.phy.queensu.ca/~phil/exiftool/]):
> {noformat}
> > exiftool.exe -validate -error -warning -a "..\20171030_21481_COPY.jpg"
> Validate : 19 Warnings (17 minor)
> Warning : [minor] Odd offset for IFD0 tag 0x010f
> Warning : [minor] Odd offset for IFD0 tag 0x011a
> Warning : [minor] Odd offset for IFD0 tag 0x011b
> Warning : [minor] Odd offset for IFD0 tag 0x0131
> Warning : [minor] Odd offset for IFD0 tag 0x0132
> Warning : [minor] Odd offset for ExifIFD tag 0x829a
> Warning : [minor] Odd offset for ExifIFD tag 0x829d
> Warning : [minor] Odd offset for ExifIFD tag 0x9003
> Warning : [minor] Odd offset for ExifIFD tag 0x9004
> Warning : [minor] Odd offset for ExifIFD tag 0x9202
> Warning : [minor] Odd offset for ExifIFD tag 0x9205
> Warning : [minor] Odd offset for ExifIFD tag 0x920a
> Warning : [minor] Odd offset for ExifIFD tag 0x9286
> Warning : Non-standard count (1) for GPS tag 0x0001
> GPSLatitudeRef
> Warning : [minor] Odd offset for GPS tag 0x0002
> Warning : Non-standard count (1) for GPS tag 0x0003
> GPSLongitudeRef
> Warning : [minor] Odd offset for GPS tag 0x0004
> Warning : [minor] Odd offset for IFD1 tag 0x011a
> Warning : [minor] Odd offset for IFD1 tag 0x011b
> {noformat}
> I need some advice on how to proceed here. Since Sanselan does not appear to
> do what it should (even on very basic metadata editing), am I correct to
> assume that the current version of Commons Imaging does a better job? :-)
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