Xpra: Ticket #1846: decode images in worker

See createImageBitmap(): It allows you to decode an image in the background, and get access to a new ImageBitmap primitive, which you can draw into a canvas in the same way you would an <img> element, another canvas, or a video.

Wed, 24 Jul 2019 09:38:58 GMT - Antoine Martin: status, milestone changed

Same as #2165, needs help.

Wed, 12 Feb 2020 05:16:57 GMT - Antoine Martin: description, milestone changed

Sat, 23 Jan 2021 05:35:20 GMT - migration script:

this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/1846