Mathis/sharp
1
0
Fork 0
mirror of https://github.com/lovell/sharp.git synced 2025-12-19 07:15:08 +01:00
Code Issues Packages Projects Releases Wiki Activity

Skip JPEG shrink-on-load for known rounding errors #3066

Browse Source 
Co-authored-by: Kleis Auke Wolthuizen <github@kleisauke.nl>
This commit is contained in:
Lovell Fuller
2022-02-03 21:18:51 +00:00
parent 83bb6a4554
commit 2b01951306
3 changed files with 30 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/pipeline.cc
View File

@@ -193,6 +193,10 @@ class PipelineWorker : public Napi::AsyncWorker {
} else if (shrink >= 2 * factor) {
jpegShrinkOnLoad = 2;
}
// Skip shrink-on-load for known libjpeg rounding errors
if (jpegShrinkOnLoad > 1 && shrink == jpegShrinkOnLoad) {
jpegShrinkOnLoad /= 2;
}
} else if (inputImageType == sharp::ImageType::WEBP ||
inputImageType == sharp::ImageType::SVG ||
inputImageType == sharp::ImageType::PDF) {