[Webkit-unassigned] [Bug 237895] New: createImageBitmap() from Blob loses exif orientation

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Tue Mar 15 08:20:08 PDT 2022


https://bugs.webkit.org/show_bug.cgi?id=237895

            Bug ID: 237895
           Summary: createImageBitmap() from Blob loses exif orientation
           Product: WebKit
           Version: Safari 15
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Images
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: aswan at figma.com
                CC: sabouhallawa at apple.com

Created attachment 454708

  --> https://bugs.webkit.org/attachment.cgi?id=454708&action=review

test case

See attached test case -- this test uses a jpeg that contains an exif header indicating that the image should be rotated 90 degrees.  When displayed via an <img> tag the image shows up at the correct orientation, but when displayed by decoding with createImageBitmap() and then drawing the resulting image to a canvas, the image is not correctly rotated.
Although not covered by the test case, if an ImageBitmap is created with an ImageElement as the source, the orientation is handled correctly.

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