[jira] [Commented] (IMAGING-205) Imaging (Apache Sanselan) produces "odd offsets" in (EXIF) metadata

[Bruno P. Kinoshita (JIRA)]

[ 
https://issues.apache.org/jira/browse/IMAGING-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16283314#comment-16283314
 ] 

Bruno P. Kinoshita commented on IMAGING-205:


{quote}Regarding the code snippet I posted earlier, about writing the 
UserComment
field. I had to do quite a bit of manual work to ensure adhering to the
Exif specification. Should some of this perhaps be incorporated into the
library?{quote}

I am not sure when/where users would want to use it, but only because I am 
slowly understanding the code base, and for TIFF/EXIF, I don't really have much 
practical use (my use case is more properly handling images for IIIF, and in 
getting a release of Imaging out of the door so I can experiment imaging with 
Cantaloupe image server).

But I assume it would be a different issue? If you could create a new issue, 
explaining the use case for that, and where you think it should go in Imaging, 
I'd be more than happy to review it.

Thanks Joakim!!!
Bruno



> 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
> Fix For: 1.0
>
> Attachments: 20171030_214812.jpg, 20171030_214812_copy_desktop.JPG, 
> 20171030_21481_COPY.jpg, DSC_3338.JPG, DSC_3338_imaging_205.JPG, 
> DSC_3338_imaging_205_UC.JPG, DSC_5506.JPG, DSC_5506_copy_desktop.JPG, 
> Gaboxjellyfish-changedexifmetadata.jpg, Gaboxjellyfish.jpg, Samsung Note 8 
> Android.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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[jira] [Commented] (IMAGING-205) Imaging (Apache Sanselan) produces "odd offsets" in (EXIF) metadata

[Joakim Knudsen (JIRA)]

[ 
https://issues.apache.org/jira/browse/IMAGING-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16283311#comment-16283311
 ] 

Joakim Knudsen commented on IMAGING-205:


Regarding the code snippet I posted earlier, about writing the UserComment
field. I had to do quite a bit of manual work to ensure adhering to the
Exif specification. Should some of this perhaps be incorporated into the
library?


Joakim

7. des. 2017 10.50 p.m. skrev "Joakim Knudsen" :

Wonderful news! Great job and thanks :-D




> 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
> Fix For: 1.0
>
> Attachments: 20171030_214812.jpg, 20171030_214812_copy_desktop.JPG, 
> 20171030_21481_COPY.jpg, DSC_3338.JPG, DSC_3338_imaging_205.JPG, 
> DSC_3338_imaging_205_UC.JPG, DSC_5506.JPG, DSC_5506_copy_desktop.JPG, 
> Gaboxjellyfish-changedexifmetadata.jpg, Gaboxjellyfish.jpg, Samsung Note 8 
> Android.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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[jira] [Commented] (IMAGING-205) Imaging (Apache Sanselan) produces "odd offsets" in (EXIF) metadata

[Joakim Knudsen (JIRA)]

[ 
https://issues.apache.org/jira/browse/IMAGING-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16282613#comment-16282613
 ] 

Joakim Knudsen commented on IMAGING-205:


Wonderful news! Great job and thanks :-D




> 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
> Fix For: 1.0
>
> Attachments: 20171030_214812.jpg, 20171030_214812_copy_desktop.JPG, 
> 20171030_21481_COPY.jpg, DSC_3338.JPG, DSC_3338_imaging_205.JPG, 
> DSC_3338_imaging_205_UC.JPG, DSC_5506.JPG, DSC_5506_copy_desktop.JPG, 
> Gaboxjellyfish-changedexifmetadata.jpg, Gaboxjellyfish.jpg, Samsung Note 8 
> Android.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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[jira] [Commented] (IMAGING-205) Imaging (Apache Sanselan) produces "odd offsets" in (EXIF) metadata

[Bruno P. Kinoshita (JIRA)]

[ 
https://issues.apache.org/jira/browse/IMAGING-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16278210#comment-16278210
 ] 

Bruno P. Kinoshita commented on IMAGING-205:


Even though it didn't happen with TiffImageWriterLossy, the same *could* happen 
there. Provided that you give as input a file with odd offsets, I believe we 
would get a resulting file with odd offsets too. The TiffImageWriterLossy seems 
to not alter the location of the fields, whereas TiffImageWriterLossless does, 
finding some times that the new offset is odd (and which is being fixed in this 
ticket).

> 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_214812.jpg, 20171030_214812_copy_desktop.JPG, 
> 20171030_21481_COPY.jpg, DSC_3338.JPG, DSC_3338_imaging_205.JPG, 
> DSC_3338_imaging_205_UC.JPG, DSC_5506.JPG, DSC_5506_copy_desktop.JPG, 
> Gaboxjellyfish-changedexifmetadata.jpg, Gaboxjellyfish.jpg, Samsung Note 8 
> Android.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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[jira] [Commented] (IMAGING-205) Imaging (Apache Sanselan) produces "odd offsets" in (EXIF) metadata

[Bruno P. Kinoshita (JIRA)]

[ 
https://issues.apache.org/jira/browse/IMAGING-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16278202#comment-16278202
 ] 

Bruno P. Kinoshita commented on IMAGING-205:


Updating the check list.

[ X ] have a confirmation that the odd bytes is gone and the metadata and image 
are still valid/good/correct/etc
* Thanks for testing Joakim!
[ X ] have a better understand of the different between a TIFFOutputItem and 
TIFFOutputField. The latter has a method, writeField, that seems to be 
correctly handling offsets oddness.
* Will attach a screen shot of my notes. But basically, TiffOutputField 
uses TifOutputItem. The item contains the offset, length, value (another item), 
etc. And the output field has the bytes, field type, tag, count, etc. The field 
is properly writing TIFF data with the correct number of bytes. The item just 
holds that data, and its write method writes the bytes as is.
[ ] write a unit test
* Pending now. Just need to craft the example files for pass/fail tests.
[ X ] find the parts of the specification that define that behaviour, and add 
links to them here, in the unit test, and in the javadoc of the class where the 
fix is applied
* The library of the US congress holds some interesting archival 
information 
https://www.loc.gov/preservation/digital/formats/fdd/fdd22.shtml, with 
links to many documents. I'm using this file 
https://www.itu.int/itudoc/itu-t/com16/tiff-fx/docs/tiff6.pdf. In the IFD and 
following sections it is possible to find text supporting the issue here. Page 
21 for instance: "providing the offset was an even number greater than or equal 
to 8"

I'm intending to proceed with the change as is, provided with a unit test. 
Unless there's objection here or in the mailing list.


> 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_214812.jpg, 20171030_214812_copy_desktop.JPG, 
> 20171030_21481_COPY.jpg, DSC_3338.JPG, DSC_3338_imaging_205.JPG, 
> DSC_3338_imaging_205_UC.JPG, DSC_5506.JPG, DSC_5506_copy_desktop.JPG, 
> Gaboxjellyfish-changedexifmetadata.jpg, Gaboxjellyfish.jpg, Samsung Note 8 
> Android.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 

[jira] [Commented] (IMAGING-205) Imaging (Apache Sanselan) produces "odd offsets" in (EXIF) metadata

[Joakim (JIRA)]

[ 
https://issues.apache.org/jira/browse/IMAGING-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16264335#comment-16264335
 ] 

Joakim commented on IMAGING-205:


I've tried using the JAR in my app, running it on Android (on actual devices) 
and, although errors and warnings are logged, the library works. I.e., to the 
same degree as Sanselan did, except that the JPEGs produced now actually 
validate :-)

Perhaps it might be possible to factor out the parts of the library which are 
not compatible with Android, and thus make an Android release? Guess that's 
another task/issue, though. 

I'm attaching a JPEG edited on Android.

> 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
>Assignee: Bruno P. Kinoshita
>Priority: Critical
> Attachments: 20171030_214812.jpg, 20171030_214812_copy_desktop.JPG, 
> 20171030_21481_COPY.jpg, DSC_3338.JPG, DSC_3338_imaging_205.JPG, 
> DSC_3338_imaging_205_UC.JPG, DSC_5506.JPG, DSC_5506_copy_desktop.JPG, 
> Gaboxjellyfish-changedexifmetadata.jpg, Gaboxjellyfish.jpg, Samsung Note 8 
> Android.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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[jira] [Commented] (IMAGING-205) Imaging (Apache Sanselan) produces "odd offsets" in (EXIF) metadata

[Joakim Knudsen (JIRA)]

[ 
https://issues.apache.org/jira/browse/IMAGING-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16259826#comment-16259826
 ] 

Joakim Knudsen commented on IMAGING-205:


Hello Bruno,

that is truly an impressive job -- the code in the `tiff-odd-offsets-1` branch 
(compiled into a JAR and included in a separate test project) does indeed seem 
to fix the problems! The sample code, setting the Aperture and GPS tags, 
produces no warnings and simply "validates OK" by ExifTool. Furthermore, I 
ventured to add my code for writing the UserComment EXIF tag (which requires a 
bit of manual work, with padding and an "ASCII marker"), and also that seems to 
pass the validation! I've added this code below.

I think this seems to be a very good starting point for further work :)

What I want to try next is to see if this current snapshot of Commons Imaging 
can work on Android "as is", even though it depends on java.awt which is 
apparently not supported on Android. You see, I realize I've been running 
Sanselan v0.97 on Android in my app, and _not_ some "Android port" of Sanselan. 
Even though my app produces errors and warnings on java.awt, it is indeed 
working on Android -- at least the parts I've been using... 

Here's my code for updating the UserComment tag:


{code:java}
{
// TEST: Try setting UserComment (in Exif dir)
String textToSet = "This is a test comment";
final TiffOutputDirectory exifDirectory = 
outputSet.getOrCreateExifDirectory();

// use Unicode (UTF-16) -- with padding (windows is not so 
happy with utf8)
// the marker has to be written with ASCII bytes, regardless of 
the encoding it actually describes (and which the following content is encoded 
in)!
// https://forums.adobe.com/thread/375932
byte[] ASCIIMarker = new byte[]{ 0x55, 0x4E, 0x49, 0x43, 0x4F, 
0x44, 0x45, 0x00 }; // spells out UNICODE\0
byte[] comment = textToSet.getBytes(ENCODING_UTF16);  // 
private static String ENCODING_UTF16 = "UTF-16LE";

// pad with \0 if (total) length is odd (\0 byte automatically 
added by arraycopy)
int pad = (ASCIIMarker.length + comment.length) % 2;

byte[] bytesComment = new byte[ASCIIMarker.length + 
comment.length + pad];
System.arraycopy(ASCIIMarker, 0, bytesComment, 0, 
ASCIIMarker.length);
System.arraycopy(comment, 0, bytesComment, ASCIIMarker.length, 
comment.length);
if (pad > 0) bytesComment[bytesComment.length-1] = 0x00;

TiffOutputField exif_comment = new 
TiffOutputField(ExifTagConstants.EXIF_TAG_USER_COMMENT,
FieldType.UNDEFINED,
bytesComment.length - pad, bytesComment);

System.out.println("ExifWriter UserComment, writing " + 
bytesComment.length + " bytes (pad " + pad + ")");

// remove old field

exifDirectory.removeField(ExifTagConstants.EXIF_TAG_USER_COMMENT);

// add new field
exifDirectory.add(exif_comment);

}
{code}




> 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_214812.jpg, 20171030_214812_copy_desktop.JPG, 
> 20171030_21481_COPY.jpg, DSC_5506.JPG, DSC_5506_copy_desktop.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   

[jira] [Commented] (IMAGING-205) Imaging (Apache Sanselan) produces "odd offsets" in (EXIF) metadata

[Bruno P. Kinoshita (JIRA)]

[ 
https://issues.apache.org/jira/browse/IMAGING-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16258968#comment-16258968
 ] 

Bruno P. Kinoshita commented on IMAGING-205:


Hi Joakim,

So I've found a way to get exiftool's htmldump to have no odd offsets. Push a 
single commit here 
https://github.com/kinow/commons-imaging/tree/tiff-odd-offsets-1

I slowly read the code, and found that these two parts were simply adding the 
length in bytes of the field plus a previous offset. Which could result in odd 
offsets. It would help me a lot if you were able to checkout my branch, `mvn 
clean package`, use the jar in your app, and let me know if that works fine for 
you.

Once I realized where the odd bytes were coming from, this seemed like the 
simplest solution (occam's razor). But before we consider this naive solution 
as a definitive solution, I'd like to:

* have a confirmation that the odd bytes is gone and the metadata and image are 
still *valid/good/correct/etc*
* have a better understand of the different between a TIFFOutputItem and 
TIFFOutputField. The latter has a method, writeField, that seems to be 
correctly handling offsets oddness.
* write a unit test
* find the parts of the specification that define that behaviour, and add links 
to them here, in the unit test, and in the javadoc of the class where the fix 
is applied

> 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_214812.jpg, 20171030_214812_copy_desktop.JPG, 
> 20171030_21481_COPY.jpg, DSC_5506.JPG, DSC_5506_copy_desktop.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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[jira] [Commented] (IMAGING-205) Imaging (Apache Sanselan) produces "odd offsets" in (EXIF) metadata

[Bruno P. Kinoshita (JIRA)]

[ 
https://issues.apache.org/jira/browse/IMAGING-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16257909#comment-16257909
 ] 

Bruno P. Kinoshita commented on IMAGING-205:


I can reproduce it. Though a bit different, the result.

I used 20171030_214812.jpg, and the code I posted before. Got odd offsets, but 
for GPSLongitude and Model only. The rest of the data seems to be good.

Really weird, will have to slowly understand the code, in order to fully 
understand what's going on. Thanks again for the input samples.

> 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_214812.jpg, 20171030_214812_copy_desktop.JPG, 
> 20171030_21481_COPY.jpg, DSC_5506.JPG, DSC_5506_copy_desktop.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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[jira] [Commented] (IMAGING-205) Imaging (Apache Sanselan) produces "odd offsets" in (EXIF) metadata

[Bruno P. Kinoshita (JIRA)]

[ 
https://issues.apache.org/jira/browse/IMAGING-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16257674#comment-16257674
 ] 

Bruno P. Kinoshita commented on IMAGING-205:


>Are you able to reproduce/verify the differences in the two jpeg files

Let me try it.

>Perhaps it is to be expected that different camera makers and different vendor 
>OS will produce differently structured JPEG metadata?

Yup, that seems to be quite normal. It increases the complexity for 
troubleshooting some issues, so thanks heaps for attaching the examples from 
different cameras.

> 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_214812.jpg, 20171030_214812_copy_desktop.JPG, 
> 20171030_21481_COPY.jpg, DSC_5506.JPG, DSC_5506_copy_desktop.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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[jira] [Commented] (IMAGING-205) Imaging (Apache Sanselan) produces "odd offsets" in (EXIF) metadata

[Joakim Knudsen (JIRA)]

[ 
https://issues.apache.org/jira/browse/IMAGING-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16257653#comment-16257653
 ] 

Joakim Knudsen commented on IMAGING-205:


Are you able to reproduce/verify the differences in the two jpeg files (from 
different manufacturers)? It would be interesting to run the two image files 
through Commons Imaging, too (as opposed to Sanselan 0.97 which I experiments 
with), and see if the warnings in the output still varies. Perhaps it is to be 
expected that different camera makers and different vendor OS will produce 
differently structured JPEG metadata? But, as long as it's according to 
standards (validates OK) this library should be able to handle the differences. 

> 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_214812.jpg, 20171030_214812_copy_desktop.JPG, 
> 20171030_21481_COPY.jpg, DSC_5506.JPG, DSC_5506_copy_desktop.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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[jira] [Commented] (IMAGING-205) Imaging (Apache Sanselan) produces "odd offsets" in (EXIF) metadata

[Joakim Knudsen (JIRA)]

[ 
https://issues.apache.org/jira/browse/IMAGING-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16254337#comment-16254337
 ] 

Joakim Knudsen commented on IMAGING-205:


I've been seeing various sets of error messages (from ExifTool) when validating 
the images run through the same (sample) code, and it seems the output depends 
on the input. Maybe that's not surprising? What I mean is, when I started this 
bug report, the JPEG I was testing on (20171030_24812.JPG -- attached) was 
taken by a Samsung Galaxy Note 8.0. The sample Sanselan code 
(WriteExifMetadataExample, which sets Aperture and GPS tags) resulted in 
various odd offsets, and some warnings on "non-standard count" on the GPS 
coordinates.

However -- and this is why I've been so confused -- JPEGs taken with my Sony 
Xperia Z5 Compact, when run through the very same sample code, produce more 
severe (AFAIK) errors. Note the Maker Notes error below -- this does not occur 
on the Samsung input file. I've added these two original JPEGs, and their 
"copy_desktop" versions after Sanselan processing.

{noformat}
$ ./exiftool.exe -validate -warning -error -a DSC_5506_copy_desktop.JPG
Validate: 16 Warnings (14 minor)
Warning : [minor] Odd offset for IFD0 tag 0x011a
Warning : [minor] Odd offset for IFD0 tag 0x011b
Warning : [minor] Odd offset for ExifIFD tag 0x829a
Warning : [minor] Odd offset for ExifIFD tag 0x829d
Warning : [minor] Odd offset for ExifIFD tag 0x9201
Warning : [minor] Odd offset for ExifIFD tag 0x9202
Warning : [minor] Odd offset for ExifIFD tag 0x9204
Warning : [minor] Odd offset for ExifIFD tag 0x920a
Warning : [minor] Possibly incorrect maker notes 
offsets (fix by -628?)
Warning : [minor] Odd offset for ExifIFD tag 0x9290
Warning : [minor] Odd offset for ExifIFD tag 0x9292
Warning : [minor] Odd offset for ExifIFD tag 0xa404
Warning : Non-standard count (1) for GPS tag 0x0001 
GPSLatitudeRef
Warning : Non-standard count (1) for GPS tag 0x0003 
GPSLongitudeRef
Warning : [minor] Odd offset for IFD1 tag 0x011a
Warning : [minor] Odd offset for IFD1 tag 0x011b
{noformat}

{noformat}
$ ./exiftool.exe -validate -warning -error -a 20171030_214812_copy_desktop.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}


> 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 

[jira] [Commented] (IMAGING-205) Imaging (Apache Sanselan) produces "odd offsets" in (EXIF) metadata

[Joakim Knudsen (JIRA)]

[ 
https://issues.apache.org/jira/browse/IMAGING-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16253346#comment-16253346
 ] 

Joakim Knudsen commented on IMAGING-205:


UPDATE
The Sample Usage code (for both Sanselan and Commons Imaging, current snapshot) 
produce odd offsets in the metadata.
The problems I mention about Maker Notes, and metadata structure, are a 
separate issue for which I have not managed to pinpoint the cause yet. Please 
ignore those comments, I will get back to this after the odd offsets is 
resolved. Hopefully, these issues are somehow related, so fixing the offsets 
might improve the other problems. 

> 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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[jira] [Commented] (IMAGING-205) Imaging (Apache Sanselan) produces "odd offsets" in (EXIF) metadata

[Joakim Knudsen (JIRA)]

[ 
https://issues.apache.org/jira/browse/IMAGING-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16252983#comment-16252983
 ] 

Joakim Knudsen commented on IMAGING-205:


Well, I could certainly give it a try! I haven't tried compiling for Android 
because I read online that Android does not support java.awt (which is required 
for Imaging.

However, the Android release of Sanselan was apparently made by removing the 
parts of the code which relied on awt -- perhaps this can also be done for 
Imaging? 
https://stackoverflow.com/a/24147677/2736813


> 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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[jira] [Commented] (IMAGING-205) Imaging (Apache Sanselan) produces "odd offsets" in (EXIF) metadata

[Bruno P. Kinoshita (JIRA)]

[ 
https://issues.apache.org/jira/browse/IMAGING-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16252548#comment-16252548
 ] 

Bruno P. Kinoshita commented on IMAGING-205:


No confusion at all. I've started to learn the code base and get myself used to 
the library recently. If I recall correctly, the development on Sanselan 
stopped, and it was since then moved to Apache Commons Imaging.

Not sure what are the requirements for Commons Imaging to be available for 
Android. Perhaps building the current sources into a jar would work?

There are a few blockers for a 1.0 release. But we could still try to release 
alpha/beta versions before that. In case having the JAR in a Maven repository 
is a requirement for you, and an -alpha or -beta works for you too. Even easier 
if you could use a -SNAPSHOT version.

> 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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[jira] [Commented] (IMAGING-205) Imaging (Apache Sanselan) produces "odd offsets" in (EXIF) metadata

[Joakim Knudsen (JIRA)]

[ 
https://issues.apache.org/jira/browse/IMAGING-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16252539#comment-16252539
 ] 

Joakim Knudsen commented on IMAGING-205:


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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[jira] [Commented] (IMAGING-205) Imaging (Apache Sanselan) produces "odd offsets" in (EXIF) metadata

[Bruno P. Kinoshita (JIRA)]

[ 
https://issues.apache.org/jira/browse/IMAGING-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16252254#comment-16252254
 ] 

Bruno P. Kinoshita commented on IMAGING-205:


Are you using the latest snapshot of Apache Commons Imaging? Or of Apache 
Sanselan? I tested the latest code from Git for Apache Commons Imaging, and the 
odd offsets were present in the generated image.

> 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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[jira] [Commented] (IMAGING-205) Imaging (Apache Sanselan) produces "odd offsets" in (EXIF) metadata

[Joakim Knudsen (JIRA)]

[ 
https://issues.apache.org/jira/browse/IMAGING-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16251429#comment-16251429
 ] 

Joakim Knudsen commented on IMAGING-205:


Thanks for looking into this! I have checked the current snapshot of Commons 
Imaging, and the bug does not seem to be present there. As Damjan Jovanovic 
pointed out to me, this has been fixed somewhere along the way. However, I need 
a version which will run on Android, and, as far as I can tell (though I 
haven't tried), the current version of the library won't/can't run on Android.

> 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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[jira] [Commented] (IMAGING-205) Imaging (Apache Sanselan) produces "odd offsets" in (EXIF) metadata

[Bruno P. Kinoshita (JIRA)]

[ 
https://issues.apache.org/jira/browse/IMAGING-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16251090#comment-16251090
 ] 

Bruno P. Kinoshita commented on IMAGING-205:


Had a bit more of time. So removed the code in the example that changes the the 
metadata (aperture, GPS). The changed code simply retrieved the TIFF metadata, 
and then called a code as below:

{code:java}
new ExifRewriter().updateExifMetadataLossless(jpegImageFile, os,
outputSet);
{code}

And the output still presents the issue. So looks like we can focus on the 
ExifRewriter method call and onwards.

> 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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[jira] [Commented] (IMAGING-205) Imaging (Apache Sanselan) produces "odd offsets" in (EXIF) metadata

[Bruno P. Kinoshita (JIRA)]

[ 
https://issues.apache.org/jira/browse/IMAGING-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16251064#comment-16251064
 ] 

Bruno P. Kinoshita commented on IMAGING-205:


Here's the code to reproduce the issue:

{code:java}
public static void main(String[] args) throws Exception {
WriteExifMetadataExample example = new WriteExifMetadataExample();
// This is broken
example.changeExifMetadata(new 
File("/home/kinow/Downloads/Gaboxjellyfish.jpg"),
new 
File("/home/kinow/Downloads/Gaboxjellyfish-changedexifmetadata.jpg"));
}
}
{code}

The `WriteExifMetadataExample` class is in the test src folder.

Not sure if its implementation is correct. Could be that it simply needs 
updating to latest changes. Or may be a real bug.

> 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
>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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[jira] [Commented] (IMAGING-205) Imaging (Apache Sanselan) produces "odd offsets" in (EXIF) metadata

[Bruno P. Kinoshita (JIRA)]

[ 
https://issues.apache.org/jira/browse/IMAGING-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16251061#comment-16251061
 ] 

Bruno P. Kinoshita commented on IMAGING-205:


Hi [~joakimk],

Thanks for the detailed report, and the link to the forum discussion. Comparing 
the output of the exiftool's htmldump, from a normal JPEG and another image 
created with WriteExifMetadataExample.changeExifMetadata (not quite the one you 
used, but from Commons Imaging tests), I can confirm there are odd offsets and 
also markers that were changed.

Going to add a sample before, and another after. Plus the code, and the output 
HTML files for posterity and for working on this issue.

> 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
>Priority: Critical
> Attachments: 20171030_21481_COPY.jpg
>
>
> 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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[jira] [Commented] (IMAGING-205) Imaging (Apache Sanselan) produces "odd offsets" in (EXIF) metadata

[Joakim Knudsen (JIRA)]

[ 
https://issues.apache.org/jira/browse/IMAGING-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16225827#comment-16225827
 ] 

Joakim Knudsen commented on IMAGING-205:


Also, see the [following 
discussion|http://u88.n24.queensu.ca/exiftool/forum/index.php/topic,8642.msg44434.html#msg44434],
 from the ExifTool forum.

> 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
>Priority: Critical
> Attachments: 20171030_21481_COPY.jpg
>
>
> 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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[jira] [Commented] (IMAGING-205) Imaging (Apache Sanselan) produces "odd offsets" in (EXIF) metadata

[Joakim Knudsen (JIRA)]

[ 
https://issues.apache.org/jira/browse/IMAGING-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16225820#comment-16225820
 ] 

Joakim Knudsen commented on IMAGING-205:


I have attached the file producing the output from above.

> 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
>Priority: Critical
> Attachments: 20171030_21481_COPY.jpg
>
>
> 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):
> {{> 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}}
> 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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