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https://issues.apache.org/jira/browse/TIKA-2658?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16498046#comment-16498046
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Selim Dincer commented on TIKA-2658:
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I created a pull request with the changes mentioned above:
https://github.com/apache/tika/pull/239
> Add magic numbers of Olympus ORF Files
> --------------------------------------
>
> Key: TIKA-2658
> URL: https://issues.apache.org/jira/browse/TIKA-2658
> Project: Tika
> Issue Type: Improvement
> Components: detector
> Affects Versions: 1.18
> Reporter: Selim Dincer
> Priority: Minor
>
> For Olympus Raw Files (.ORF) there aren't any magic numbers specified in the
> tika-mimetypes.xml file. When I adjust the xml to look like following it
> works:
> {code:java}
> <mime-type type="image/x-raw-olympus">
> <_comment>Olympus raw image</_comment>
> <magic priority="50">
> <match offset="0" type="string" value="\x49\x49\x52\x4F"/>
> </magic>
> <glob pattern="*.orf"/>
> </mime-type>
> {code}
> I tested this with files from my Olympus E-PL7, my Olympus E-M5 Mark II and
> some Olympus E-M1 Mark II raw files I found on the internet (the most recent
> camera). The content type changes from octet stream to image/x-raw-olympus as
> expected.
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