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Posted to dev@pdfbox.apache.org by "Tilman Hausherr (JIRA)" <ji...@apache.org> on 2019/07/25 17:03:00 UTC
[jira] [Resolved] (PDFBOX-4607) Transparent 16 bit image doesn't
display in Adobe Reader
[ https://issues.apache.org/jira/browse/PDFBOX-4607?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tilman Hausherr resolved PDFBOX-4607.
-------------------------------------
Resolution: Fixed
Assignee: Tilman Hausherr
Fix Version/s: 3.0.0 PDFBox
2.0.17
Thanks again!
> Transparent 16 bit image doesn't display in Adobe Reader
> --------------------------------------------------------
>
> Key: PDFBOX-4607
> URL: https://issues.apache.org/jira/browse/PDFBOX-4607
> Project: PDFBox
> Issue Type: Bug
> Components: Rendering
> Affects Versions: 2.0.12, 2.0.16
> Reporter: Tilman Hausherr
> Assignee: Tilman Hausherr
> Priority: Major
> Labels: regression
> Fix For: 2.0.17, 3.0.0 PDFBox
>
> Attachments: 16bit-transparent.pdf, 16bit-transparent.png, Correctly_handle_grayscale_colorspacees_when_setting_the_alternate__colorspace_.patch
>
>
> Thomas on stackoverflow has very simple code that creates a PDF from a 16 bit PNG image. The PDF displays fine on Adobe Reader in 2.0.8 but no longer since 2.0.12. It displays on all other viewers I've tried: PDFBox, GS, PDF.js and Chrome. It works on Adobe Reader when disabling the predictor logic in LosslessFactory.java. Thomas and I narrowed the problem last evening and now he has a non confidential file for us and also a workaround on his side.
> To reproduce the problem I used the ImageToPDF example.
> cc [~rototor]
> the "bad" file has imageType custom, colorspace with getNumComponents = 1, 8 bpc, data buffer TYPE_BYTE
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