[Webkit-unassigned] [Bug 222150] New: Some JPEG 2000s fail to load in iOS 14.5

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=222150

            Bug ID: 222150
           Summary: Some JPEG 2000s fail to load in iOS 14.5
           Product: WebKit
           Version: Safari 14
          Hardware: iPhone / iPad
                OS: iOS 14
            Status: NEW
          Severity: Critical
          Priority: P2
         Component: Images
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: e at ericportis.com

Many JPEG 2000 images, which decoded and displayed fine in iOS 14.4, fail to load in iOS 14.5 betas.

I don't have access to a beta versions of Big Sur but I wouldn't be surprised if this affected MacOS too. I'm testing with Simulator Version 12.5 (961). 

Steps to reproduce:

Try to load any of the following images:

(generated with OpenJPEG)
https://ericportis.com/etc/jp2_test_files/USA_Pro_Challenge/USA_Pro_Challenge.jp2
https://ericportis.com/etc/jp2_test_files/Snowman_snowman/Snowman_snowman.jp2
https://ericportis.com/etc/jp2_test_files/Zion_narrows/Zion_narrows.jp2

(generated with Cloudinary, which uses Kakadu)
http://o.img.rodeo/w_500/sample.jp2
http://o.img.rodeo/w_500/dogs/5.jp2
http://o.img.rodeo/w_1000,q_auto/dogs/7.jp2

Not all JP2s are affected. This image, exported from Preview.app on MacOS Big Sur, loads successfully:
https://ericportis.com/etc/dog-5.jp2

I am assuming this is the fault of an underlying system framework, and will be closed, as previous image decoding bugs in WebKit have been. I have also submitted FB9010730, about this.

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.webkit.org/pipermail/webkit-unassigned/attachments/20210219/3892fa07/attachment-0001.htm>