46 lines
1.7 KiB
Plaintext
46 lines
1.7 KiB
Plaintext
Go bindings for libimagequant
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`libimagequant` is a library for lossy recompression of PNG images to reduce their filesize. It is used by the `pngquant` tool. This `go-imagequant` project is a set of bindings for libimagequant to enable its use from the Go programming language.
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This binding was written by hand. The result is somewhat more idiomatic than an automated conversion, but some `defer foo.Release()` calls are required for memory management.
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Written in Golang
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=USAGE=
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Usage example is provided by a sample utility `cmd/gopngquant` which mimics some functionality of the upstream `pngquant`.
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The sample utility has the following options:
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`Usage of gopngquant:
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-In string
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Input filename
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-Out string
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Output filename
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-Speed int
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Speed (1 slowest, 10 fastest) (default 3)
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-Version`
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=BUILDING=
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The expected package path is `code.ivysaur.me/imagequant`. Build via `go build`.
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This is a CGO package and requires a C compiler installed. However, if you use `go install` then future invocations of `go build` do not require the C compiler to be present.
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The `imagequant.go` file also declares a number of `CFLAGS` for GCC that allow the included libimagequant (2.8 git-a425e83) to build in an optimal way without using the upstream configure/make scripts.
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=LICENSE=
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I am releasing this binding under the ISC license, however, `libimagequant` itself is released under GPLv3-or-later and/or commercial licenses. You must comply with the terms of such a license when using this binding in a Go project.
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=CHANGELOG=
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2016-11-24 2.8go1.0
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- Initial public release
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=SEE ALSO=
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- Pngquant homepage https://pngquant.org/
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- Pngquant source code https://github.com/pornel/pngquant
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- Libimagequant source code https://github.com/ImageOptim/libimagequant
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