[Webkit-unassigned] [Bug 170864] New: [CG] To decode an image frame asynchronously, pass the native size of the image to CGImageSourceCreateThumbnailAtIndex() if it's smaller than the sizeForDrawing

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Fri Apr 14 15:50:57 PDT 2017


https://bugs.webkit.org/show_bug.cgi?id=170864

            Bug ID: 170864
           Summary: [CG] To decode an image frame asynchronously, pass the
                    native size of the image to
                    CGImageSourceCreateThumbnailAtIndex() if it's smaller
                    than the sizeForDrawing
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Images
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: sabouhallawa at apple.com

If we don't pass the native size explicitly to CGImageSourceCreateThumbnailAtIndex through the option kCGImageSourceThumbnailMaxPixelSize, CG creates a scaled down thumbnail image for very large images.

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