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change: encode non-JPEG images as PNGs instead of JPEG2000 images #1481

Merged
merged 1 commit into from Oct 30, 2021
Merged

change: encode non-JPEG images as PNGs instead of JPEG2000 images #1481

merged 1 commit into from Oct 30, 2021

Commits on Oct 29, 2021

  1. change: encode non-JPEG images as PNGs instead of JPEG2000 images 

    This uses Pillow to re-encode any non-JPEG image as a PNG, then inline that
image's IDAT chunks as a FlateDecode value, which allows us to reuse the work
from the PNG encoder. This means we'll reencode some PNGs we could have passed
through directly, but that could be changed later. Alpha layers continue to be
handled separately, as appears to be required by the PDF spec.
    @aschmitz
    aschmitz committed Oct 29, 2021
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