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From "Damjan Jovanovic (JIRA)" <>
Subject [jira] Created: (SANSELAN-45) Add support for the ICNS icon format
Date Wed, 22 Sep 2010 09:47:32 GMT
Add support for the ICNS icon format

                 Key: SANSELAN-45
             Project: Commons Sanselan
          Issue Type: New Feature
         Environment: All
            Reporter: Damjan Jovanovic
            Priority: Minor

I am submitting a patch that adds support for the Apple ICNS icon format. It supports reading,
writing, getting the image info, and dumping the icons, and contains insightful tests.

This is, to my knowledge, the most correct open source ICNS parser in existence at the moment,
and the only one to contain any detailed tests. It deals with an extensively investigated
compression quirk in 128x128 images, uses the same alpha mask search order used by MacOS,
and has been thoroughly tested for conformance against MacOS itself. It correctly parses all
the ICNS files that ship with MacOS.

The only missing feature is support for 256x256 and 512x512 icons, but that requires JPEG2000
decompression which Sanselan doesn't have at the moment.

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