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Fix the issue when WebP Encoding grayscale image/CMYK image #53

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Merged
merged 4 commits into from
Feb 2, 2021

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dreampiggy
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@dreampiggy dreampiggy commented Feb 1, 2021

Which cause the wrong encoded WebP image (each line repeats 3 times)

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Original image:

TestImageGrayscale.jpg.zip

Before fix (Bug):

bug.webp.zip

After fix (Correct):

test.webp.zip

@dreampiggy dreampiggy changed the title Fix the issue when WebP Encoding grayscale image with only 1 channel,… Fix the issue when WebP Encoding grayscale image with only 1 channel Feb 1, 2021
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codecov bot commented Feb 1, 2021

Codecov Report

Merging #53 (1903ac2) into master (cdf6ce8) will decrease coverage by 1.59%.
The diff coverage is 85.71%.

Impacted file tree graph

@@            Coverage Diff             @@
##           master      #53      +/-   ##
==========================================
- Coverage   77.11%   75.52%   -1.60%     
==========================================
  Files           2        2              
  Lines         804      813       +9     
==========================================
- Hits          620      614       -6     
- Misses        184      199      +15     
Flag Coverage Δ
ios 75.52% <85.71%> (-1.60%) ⬇️

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Impacted Files Coverage Δ
SDWebImageWebPCoder/Classes/SDImageWebPCoder.m 75.40% <85.71%> (-1.60%) ⬇️

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@dreampiggy dreampiggy added the fix label Feb 2, 2021
@dreampiggy dreampiggy merged commit 2460818 into master Feb 2, 2021
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This PR also fix the CMYK image's encoding issue.

Test image from Apple: https://developer.apple.com/documentation/accelerate/standardizing_arbitrary_image_formats_for_processing

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