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Diffstat (limited to 'gnu/packages/image.scm')
| -rw-r--r-- | gnu/packages/image.scm | 70 |
1 files changed, 69 insertions, 1 deletions
diff --git a/gnu/packages/image.scm b/gnu/packages/image.scm index 262bcd31dc..27062ac777 100644 --- a/gnu/packages/image.scm +++ b/gnu/packages/image.scm @@ -14,7 +14,7 @@ ;;; Copyright © 2016, 2017 Arun Isaac <arunisaac@systemreboot.net> ;;; Copyright © 2016, 2017 Kei Kebreau <kkebreau@posteo.net> ;;; Copyright © 2017 ng0 <ng0@n0.is> -;;; Copyright © 2017 Hartmut Goebel <h.goebel@crazy-compilers.com> +;;; Copyright © 2017,2019 Hartmut Goebel <h.goebel@crazy-compilers.com> ;;; Copyright © 2017 Julien Lepiller <julien@lepiller.eu> ;;; Copyright © 2018 Joshua Sierles, Nextjournal <joshua@nextjournal.com> ;;; Copyright © 2018 Fis Trivial <ybbs.daans@hotmail.com> @@ -295,6 +295,74 @@ files. It can compress them as much as 40% losslessly.") Currently all documentation resides in @file{pnglite.h}.") (license license:zlib)))) +(define-public libimagequant + (package + (name "libimagequant") + (version "2.12.3") + (source + (origin + (method git-fetch) + (uri (git-reference + (url "https://github.com/ImageOptim/libimagequant.git") + (commit version))) + (file-name (git-file-name name version)) + (sha256 + (base32 "0qsfq1kv1m5jzn9v9iz0bac66k4clcis1c9877qabnwzwmwma5v0")))) + (build-system gnu-build-system) + (arguments + '(#:tests? #f)) ; no check target + (home-page "https://pngquant.org/lib/") + (synopsis "Image palette quantization library") + (description "libimagequant is a small, portable C library for +high-quality conversion of RGBA images to 8-bit indexed-color (palette) +images. This library can significantly reduces file sizes and powers pngquant +and other PNG optimizers.") + (license license:gpl3+))) + +(define-public pngquant + (package + (name "pngquant") + (version "2.12.3") + (source + (origin + (method git-fetch) + (uri (git-reference + (url "https://github.com/kornelski/pngquant.git") + (commit version))) + (file-name (git-file-name name version)) + (sha256 + (base32 "1yiwbcihn4311fpfd568gg8zmmhqwg80jmhbhkb5msiipgd9xv33")))) + (build-system gnu-build-system) + (arguments + `(#:test-target "test" + #:configure-flags + '("--with-openmp" "--with-lcms2"))) + (native-inputs + `(("pkg-config" ,pkg-config))) + (inputs + `(("libpng" ,libpng) + ("zlib" , zlib) + ("lcms" ,lcms) + ("libimagequant" ,libimagequant))) + (home-page "https://pngquant.org/") + (synopsis "Utility and library for lossy compressing PNG images") + (description "pngquant is a PNG compressor that significantly reduces file +sizes by converting images to a more efficient 8-bit PNG format with alpha +channel (often 60-80% smaller than 24/32-bit PNG files). Compressed images +are fully standards-compliant and are supported by all web browsers and +operating systems. + +Features: +@enumerate +@item High-quality palette generation using a combination of vector + quantization algorithms. +@item Unique adaptive dithering algorithm that adds less noise to images + than the standard Floyd-Steinberg. +@item Easy to integrate with shell scripts, GUIs and server-side software. +@item Fast mode for real-time processing/large numbers of images. +@end enumerate") + (license license:gpl3+))) + (define-public libjpeg (package (name "libjpeg") |