Add support to rescale animated PNG(APNG)/GIF/WEBP

[stdc105]

PNG(APNG)

• [X] Animated input
• [ ] Correctly setting (resized) default image for generated content
• [ ] Compression size check
• [ ] BUG: output can be broken even the frames themselves are properly processed
• [X] Animated output

GIF

• [X] Animated input
• [X] Investigate if pasted additive frame needs to be aligned according to GIF tile info Partial frames seem to be deprecated
• [X] Animated output

WEBP

• [X] Animated input
• [X] Animated output

Functions

• [X] Animated controlled by URL search parameter ?animated=1
• [X] Support for avatar
• [X] Support for resize (fit)
• [ ] Cleanup

[stdc105]

cc @luxiaba

[stdc105]

Seems like I also need to tweak my black config.

[luxiaba]

Seems like I also need to tweak my black config.

No need config black alone, you can use pre-commit to hold all lints or check.

Install hooks for git push / commit / ..., it'll help you to do it every moment: pre-commit install --hook-type GIT_HOOK_NAME or Use pre-commit run --all-files to check all files when you want to check.

[livid]

Pull request should not push image to Docker.

[stdc105]

There is currently a bug on animated APNG output: frames seem to be glitched when converting GIF to APNG. I cannot reproduce on all GIFs, but here is a problematic example: Original GIF (our favortie nyan cat): Resized GIF:

The glitch effect can be reproduced on all resize sizes, with or without a default image prepend to the frames, and both in dev Docker container and on Windows.

[codecov-commenter]

Codecov Report

Merging #30 (c2794c5) into main (306d5fc) will decrease coverage by 3.85%. The diff coverage is 54.63%.

@@            Coverage Diff             @@
##             main      #30      +/-   ##
==========================================
- Coverage   93.91%   90.06%   -3.86%     
==========================================
  Files          17       17              
  Lines        1003     1047      +44     
  Branches      122      135      +13     
==========================================
+ Hits          942      943       +1     
- Misses         41       83      +42     
- Partials       20       21       +1     

Flag	Coverage Δ
unittests	90.06% <54.63%> (-3.86%)	:arrow_down:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
remote/blueprints/image.py	60.37% <36.36%> (-23.39%)	:arrow_down:
remote/utilities/image.py	85.25% <93.10%> (+0.84%)	:arrow_up:
remote/app.py	93.54% <100.00%> (ø)

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