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Ensure animated GIF output is optimised #2376

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Lovell Fuller 2020-09-19 20:53:15 +01:00
parent d46b4d950f
commit 6c5cde363a
2 changed files with 7 additions and 0 deletions
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3
docs/changelog.md
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@ -21,6 +21,9 @@ Requires libvips v8.10.0
* Ensure `stats` can be calculated for 1x1 input. * Ensure `stats` can be calculated for 1x1 input.
[#2372](https://github.com/lovell/sharp/issues/2372) [#2372](https://github.com/lovell/sharp/issues/2372)
* Ensure animated GIF output is optimised.
[#2376](https://github.com/lovell/sharp/issues/2376)
### v0.26.0 - 25th August 2020 ### v0.26.0 - 25th August 2020
* Prebuilt libvips binaries are now statically-linked and Brotli-compressed, requiring Node.js 10.16.0+. * Prebuilt libvips binaries are now statically-linked and Brotli-compressed, requiring Node.js 10.16.0+.

4
src/pipeline.cc
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@ -782,6 +782,8 @@ class PipelineWorker : public Napi::AsyncWorker {
sharp::AssertImageTypeDimensions(image, sharp::ImageType::GIF); sharp::AssertImageTypeDimensions(image, sharp::ImageType::GIF);
VipsArea *area = VIPS_AREA(image.magicksave_buffer(VImage::option() VipsArea *area = VIPS_AREA(image.magicksave_buffer(VImage::option()
->set("strip", !baton->withMetadata) ->set("strip", !baton->withMetadata)
->set("optimize_gif_frames", TRUE)
->set("optimize_gif_transparency", TRUE)
->set("format", "gif"))); ->set("format", "gif")));
baton->bufferOut = static_cast<char*>(area->data); baton->bufferOut = static_cast<char*>(area->data);
baton->bufferOutLength = area->length; baton->bufferOutLength = area->length;
@ -925,6 +927,8 @@ class PipelineWorker : public Napi::AsyncWorker {
sharp::AssertImageTypeDimensions(image, sharp::ImageType::GIF); sharp::AssertImageTypeDimensions(image, sharp::ImageType::GIF);
image.magicksave(const_cast<char*>(baton->fileOut.data()), VImage::option() image.magicksave(const_cast<char*>(baton->fileOut.data()), VImage::option()
->set("strip", !baton->withMetadata) ->set("strip", !baton->withMetadata)
->set("optimize_gif_frames", TRUE)
->set("optimize_gif_transparency", TRUE)
->set("format", "gif")); ->set("format", "gif"));
baton->formatOut = "gif"; baton->formatOut = "gif";
} else if (baton->formatOut == "tiff" || (mightMatchInput && isTiff) || } else if (baton->formatOut == "tiff" || (mightMatchInput && isTiff) ||