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From Michael Groß (JIRA) <j...@apache.org>
Subject [jira] [Commented] (IMAGING-97) Fails to read most Sony A100 JPG files generated from Photoshop CS2
Date Tue, 24 Feb 2015 20:59:04 GMT

    [ https://issues.apache.org/jira/browse/IMAGING-97?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14335440#comment-14335440
] 

Michael Groß commented on IMAGING-97:
-------------------------------------

This problem is caused by RST markers fond among image data. They are legal there. Thanks
for the example, it was very helpful.

Added RST and DRI markers to a proposed patch. This patch also throws a exceptions with a
proper message if the entropy data (= encoded image data) contain RST markers so that everyone
knows whats going on.
http://github.com/mgmechanics/commons-imaging/tree/IMAGING-134

According to http://stackoverflow.com/questions/8748671/jpeg-restart-markers this issue affects
images saved with Photoshop: File->Save As->jpeg.

> Fails to read most Sony A100 JPG files generated from Photoshop CS2 
> --------------------------------------------------------------------
>
>                 Key: IMAGING-97
>                 URL: https://issues.apache.org/jira/browse/IMAGING-97
>             Project: Commons Imaging
>          Issue Type: New Feature
>          Components: Format: JPEG
>    Affects Versions: 1.0
>         Environment: Windows 7, JDK1.7, Imaging snapshot build from 20121013
>            Reporter: William Saar
>             Fix For: Patch Needed
>
>         Attachments: _DSC6099.jpg
>
>
> This line fails with the exception at the bottom for most of my old JPG files shot with
a Sony A100, and sometimes processed by Photoshop CS2. I will attach a failing file.
> BufferedImage img = Imaging.getBufferedImage(compressedThumbnailData, jpgDecodeParams);
> where jpgDecodeParams are
> ImagingConstants.BUFFERED_IMAGE_FACTORY, new RgbBufferedImageFactory()
> ImagingConstants.PARAM_KEY_FORMAT, ImageFormat.IMAGE_FORMAT_JPEG
> Exception:
> org.apache.commons.imaging.ImageReadException: Invalid marker found in entropy data
> 	at org.apache.commons.imaging.formats.jpeg.decoder.JpegInputStream.nextBit(JpegInputStream.java:50)
> 	at org.apache.commons.imaging.formats.jpeg.decoder.JpegDecoder.decode(JpegDecoder.java:417)
> 	at org.apache.commons.imaging.formats.jpeg.decoder.JpegDecoder.readMCU(JpegDecoder.java:311)
> 	at org.apache.commons.imaging.formats.jpeg.decoder.JpegDecoder.visitSOS(JpegDecoder.java:122)
> 	at org.apache.commons.imaging.formats.jpeg.JpegUtils.traverseJFIF(JpegUtils.java:83)
> 	at org.apache.commons.imaging.formats.jpeg.decoder.JpegDecoder.decode(JpegDecoder.java:428)
> 	at org.apache.commons.imaging.formats.jpeg.JpegImageParser.getBufferedImage(JpegImageParser.java:95)
> 	at org.apache.commons.imaging.Imaging.getBufferedImage(Imaging.java:1375)
> 	at org.apache.commons.imaging.Imaging.getBufferedImage(Imaging.java:1315)
> 	at 



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