566 lines
21 KiB
Scheme
566 lines
21 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
||
;;; Copyright © 2013, 2015 Andreas Enge <andreas@enge.fr>
|
||
;;; Copyright © 2014, 2015 Mark H Weaver <mhw@netris.org>
|
||
;;; Copyright © 2014, 2015 Alex Kost <alezost@gmail.com>
|
||
;;; Copyright © 2014 Ricardo Wurmus <rekado@elephly.net>
|
||
;;; Copyright © 2015 Taylan Ulrich Bayırlı/Kammer <taylanbayirli@gmail.com>
|
||
;;; Copyright © 2014 John Darrington <jmd@gnu.org>
|
||
;;;
|
||
;;; This file is part of GNU Guix.
|
||
;;;
|
||
;;; GNU Guix is free software; you can redistribute it and/or modify it
|
||
;;; under the terms of the GNU General Public License as published by
|
||
;;; the Free Software Foundation; either version 3 of the License, or (at
|
||
;;; your option) any later version.
|
||
;;;
|
||
;;; GNU Guix is distributed in the hope that it will be useful, but
|
||
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
;;; GNU General Public License for more details.
|
||
;;;
|
||
;;; You should have received a copy of the GNU General Public License
|
||
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
|
||
|
||
(define-module (gnu packages image)
|
||
#:use-module (gnu packages)
|
||
#:use-module (gnu packages algebra)
|
||
#:use-module (gnu packages autotools)
|
||
#:use-module (gnu packages boost)
|
||
#:use-module (gnu packages compression)
|
||
#:use-module (gnu packages doxygen)
|
||
#:use-module (gnu packages fontutils)
|
||
#:use-module (gnu packages ghostscript)
|
||
#:use-module (gnu packages gl)
|
||
#:use-module (gnu packages maths)
|
||
#:use-module (gnu packages perl)
|
||
#:use-module (gnu packages pkg-config)
|
||
#:use-module (gnu packages python)
|
||
#:use-module (gnu packages xml)
|
||
#:use-module (gnu packages xorg)
|
||
#:use-module (gnu packages zip)
|
||
#:use-module ((guix licenses) #:prefix license:)
|
||
#:use-module (guix packages)
|
||
#:use-module (guix download)
|
||
#:use-module (guix build-system gnu)
|
||
#:use-module (guix build-system cmake)
|
||
#:use-module (srfi srfi-1))
|
||
|
||
(define-public libpng
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||
(package
|
||
(name "libpng")
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||
(version "1.5.21")
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||
(source (origin
|
||
(method url-fetch)
|
||
|
||
;; Note: upstream removes older tarballs.
|
||
(uri (list (string-append "mirror://sourceforge/libpng/libpng15/"
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||
version "/libpng-" version ".tar.xz")
|
||
(string-append
|
||
"ftp://ftp.simplesystems.org/pub/libpng/png/src"
|
||
"/libpng15/libpng-" version ".tar.xz")))
|
||
(sha256
|
||
(base32 "19yvzw6sf9gf7v25ha9bla8bw1nijh82wj8ag6brjj3hpij1q5dm"))))
|
||
(build-system gnu-build-system)
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||
|
||
;; libpng.la says "-lz", so propagate it.
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||
(propagated-inputs `(("zlib" ,zlib)))
|
||
|
||
(synopsis "Library for handling PNG files")
|
||
(description
|
||
"Libpng is the official PNG (Portable Network Graphics) reference
|
||
library. It supports almost all PNG features and is extensible.")
|
||
(license license:zlib)
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||
(home-page "http://www.libpng.org/pub/png/libpng.html")))
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||
|
||
(define-public libjpeg
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||
(package
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||
(name "libjpeg")
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||
(version "9a")
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||
(source (origin
|
||
(method url-fetch)
|
||
(uri (string-append "http://www.ijg.org/files/jpegsrc.v"
|
||
version ".tar.gz"))
|
||
(sha256 (base32
|
||
"19q5zr4n60sjcvfbyv06n4pcl1mai3ipvnd2akflayciinj3wx9s"))))
|
||
(build-system gnu-build-system)
|
||
(synopsis "Library for handling JPEG files")
|
||
(description
|
||
"Libjpeg implements JPEG image encoding, decoding, and transcoding.
|
||
JPEG is a standardized compression method for full-color and gray-scale
|
||
images.
|
||
The included programs provide conversion between the JPEG format and
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||
image files in PBMPLUS PPM/PGM, GIF, BMP, and Targa file formats.")
|
||
(license license:ijg)
|
||
(home-page "http://www.ijg.org/")))
|
||
|
||
(define-public libjpeg-8
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||
(package (inherit libjpeg)
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||
(version "8d")
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||
(source (origin
|
||
(method url-fetch)
|
||
(uri (string-append "http://www.ijg.org/files/jpegsrc.v"
|
||
version ".tar.gz"))
|
||
(sha256 (base32
|
||
"1cz0dy05mgxqdgjf52p54yxpyy95rgl30cnazdrfmw7hfca9n0h0"))))))
|
||
|
||
(define-public libtiff
|
||
(package
|
||
(name "libtiff")
|
||
(version "4.0.3")
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||
(source (origin
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||
(method url-fetch)
|
||
(uri (string-append "ftp://ftp.remotesensing.org/pub/libtiff/tiff-"
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||
version ".tar.gz"))
|
||
(sha256 (base32
|
||
"0wj8d1iwk9vnpax2h29xqc2hwknxg3s0ay2d5pxkg59ihbifn6pa"))))
|
||
(build-system gnu-build-system)
|
||
(inputs `(("zlib" ,zlib)
|
||
("libjpeg-8" ,libjpeg-8)))
|
||
;; currently does not compile with libjpeg version 9
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||
(arguments
|
||
`(#:configure-flags
|
||
(list (string-append "--with-jpeg-include-dir="
|
||
(assoc-ref %build-inputs "libjpeg-8")
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||
"/include"))))
|
||
(synopsis "Library for handling TIFF files")
|
||
(description
|
||
"Libtiff provides support for the Tag Image File Format (TIFF), a format
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||
used for storing image data.
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||
Included are a library, libtiff, for reading and writing TIFF and a small
|
||
collection of tools for doing simple manipulations of TIFF images.")
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||
(license (license:non-copyleft "file://COPYRIGHT"
|
||
"See COPYRIGHT in the distribution."))
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||
(home-page "http://www.libtiff.org/")))
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||
|
||
(define-public libwmf
|
||
(package
|
||
(name "libwmf")
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||
(version "0.2.8.4")
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||
(source
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||
(origin
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||
(method url-fetch)
|
||
(uri (string-append "mirror://sourceforge/wvware/"
|
||
name "/" version
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||
"/" name "-" version ".tar.gz"))
|
||
(sha256
|
||
(base32 "1y3wba4q8pl7kr51212jwrsz1x6nslsx1gsjml1x0i8549lmqd2v"))))
|
||
|
||
(build-system gnu-build-system)
|
||
(inputs
|
||
`(("freetype" ,freetype)
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||
("libjpeg" ,libjpeg)
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||
("libpng",libpng)
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||
("libxml2" ,libxml2)
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||
("zlib" ,zlib)))
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||
(native-inputs
|
||
`(("pkg-config" ,pkg-config)))
|
||
(synopsis "Library for reading images in the Microsoft WMF format")
|
||
(description
|
||
"libwmf is a library for reading vector images in Microsoft's native
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||
Windows Metafile Format (WMF) and for either (a) displaying them in, e.g., an X
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||
window; or (b) converting them to more standard/free file formats such as, e.g.,
|
||
the W3C's XML-based Scaleable Vector Graphic (SVG) format.")
|
||
(home-page "http://wvware.sourceforge.net/libwmf.html")
|
||
|
||
;; 'COPYING' is the GPLv2, but file headers say LGPLv2.0+.
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||
(license license:lgpl2.0+)))
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||
|
||
(define-public leptonica
|
||
(package
|
||
(name "leptonica")
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||
(version "1.71")
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||
(source
|
||
(origin
|
||
(method url-fetch)
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||
(uri (string-append "http://www.leptonica.com/source/leptonica-"
|
||
version ".tar.gz"))
|
||
(sha256
|
||
(base32 "0j5qgrff6im5n9waflbi7w643q1p6mahyf2z35gb4vj9h5p76pfc"))
|
||
(modules '((guix build utils)))
|
||
;; zlib and openjpg should be under Libs, not Libs.private. See:
|
||
;; https://code.google.com/p/tesseract-ocr/issues/detail?id=1436
|
||
(snippet
|
||
'(substitute* "lept.pc.in"
|
||
(("^(Libs\\.private: .*)@ZLIB_LIBS@(.*)" all pre post)
|
||
(string-append pre post))
|
||
(("^(Libs\\.private: .*)@JPEG_LIBS@(.*)" all pre post)
|
||
(string-append pre post))
|
||
(("^Libs: .*" all)
|
||
(string-append all " @ZLIB_LIBS@ @JPEG_LIBS@"))))))
|
||
(build-system gnu-build-system)
|
||
(native-inputs
|
||
`(("gnuplot" ,gnuplot))) ;needed for test suite
|
||
(inputs
|
||
`(("giflib" ,giflib)
|
||
("libjpeg" ,libjpeg)
|
||
("libpng" ,libpng)
|
||
("libtiff" ,libtiff)
|
||
("libwebp" ,libwebp)))
|
||
(propagated-inputs
|
||
`(("openjpeg" ,openjpeg)
|
||
("zlib" ,zlib)))
|
||
(arguments
|
||
'(#:phases
|
||
(modify-phases %standard-phases
|
||
;; Prevent make from trying to regenerate config.h.in.
|
||
(add-after
|
||
'unpack 'set-config-h-in-file-time
|
||
(lambda _
|
||
(set-file-time "config/config.h.in" (stat "configure"))))
|
||
(add-after
|
||
'unpack 'patch-reg-wrapper
|
||
(lambda _
|
||
(substitute* "prog/reg_wrapper.sh"
|
||
((" /bin/sh ")
|
||
(string-append " " (which "sh") " "))))))))
|
||
(home-page "http://www.leptonica.com/")
|
||
(synopsis "Library and tools for image processing and analysis")
|
||
(description
|
||
"Leptonica is a C library and set of command-line tools for efficient
|
||
image processing and image analysis operations. It supports rasterop, affine
|
||
transformations, binary and grayscale morphology, rank order, and convolution,
|
||
seedfill and connected components, image transformations combining changes in
|
||
scale and pixel depth, and pixelwise masking, blending, enhancement, and
|
||
arithmetic ops.")
|
||
(license license:bsd-2)))
|
||
|
||
(define-public jbig2dec
|
||
(package
|
||
(name "jbig2dec")
|
||
(version "0.11")
|
||
(source
|
||
(origin
|
||
(method url-fetch)
|
||
(uri ;; The link on the homepage is dead.
|
||
(string-append "http://distfiles.gentoo.org/distfiles/" name "-"
|
||
version ".tar.gz"))
|
||
(sha256
|
||
(base32 "1ffhgmf2fqzk0h4k736pp06z7q5y4x41fg844bd6a9vgncq86bby"))
|
||
(patches (list (search-patch "jbig2dec-ignore-testtest.patch")))))
|
||
|
||
(build-system gnu-build-system)
|
||
(synopsis "Decoder of the JBIG2 image compression format")
|
||
(description
|
||
"JBIG2 is designed for lossy or lossless encoding of 'bilevel'
|
||
(1-bit monochrome) images at moderately high resolution, and in
|
||
particular scanned paper documents. In this domain it is very
|
||
efficient, offering compression ratios on the order of 100:1.
|
||
|
||
This is a decoder only implementation, and currently is in the alpha
|
||
stage, meaning it doesn't completely work yet. However, it is
|
||
maintaining parity with available encoders, so it is useful for real
|
||
work.")
|
||
(home-page "http://jbig2dec.sourceforge.net/")
|
||
(license license:gpl2+)))
|
||
|
||
(define-public openjpeg
|
||
(package
|
||
(name "openjpeg")
|
||
(version "2.1.0")
|
||
(source
|
||
(origin
|
||
(method url-fetch)
|
||
(uri
|
||
(string-append "mirror://sourceforge/openjpeg.mirror/" name "-"
|
||
version ".tar.gz"))
|
||
(sha256
|
||
(base32 "00zzm303zvv4ijzancrsb1cqbph3pgz0nky92k9qx3fq9y0vnchj"))))
|
||
(build-system cmake-build-system)
|
||
(arguments
|
||
;; Trying to run `$ make check' results in a no rule fault.
|
||
'(#:tests? #f))
|
||
(inputs
|
||
`(("lcms" ,lcms)
|
||
("libpng" ,libpng)
|
||
("libtiff" ,libtiff)
|
||
("zlib" ,zlib)))
|
||
(synopsis "JPEG 2000 codec")
|
||
(description
|
||
"The OpenJPEG library is a JPEG 2000 codec written in C. It has
|
||
been developed in order to promote the use of JPEG 2000, the new
|
||
still-image compression standard from the Joint Photographic Experts
|
||
Group (JPEG).
|
||
|
||
In addition to the basic codec, various other features are under
|
||
development, among them the JP2 and MJ2 (Motion JPEG 2000) file formats,
|
||
an indexing tool useful for the JPIP protocol, JPWL-tools for
|
||
error-resilience, a Java-viewer for j2k-images, ...")
|
||
(home-page "https://code.google.com/p/openjpeg/")
|
||
(license license:bsd-2)))
|
||
|
||
(define-public openjpeg-2.0
|
||
(package (inherit openjpeg)
|
||
(name "openjpeg")
|
||
(version "2.0.1")
|
||
(source
|
||
(origin
|
||
(method url-fetch)
|
||
(uri
|
||
(string-append "mirror://sourceforge/openjpeg.mirror/" name "-"
|
||
version ".tar.gz"))
|
||
(sha256
|
||
(base32 "1c2xc3nl2mg511b63rk7hrckmy14681p1m44mzw3n1fyqnjm0b0z"))))))
|
||
|
||
(define-public openjpeg-1
|
||
(package (inherit openjpeg)
|
||
(name "openjpeg")
|
||
(version "1.5.2")
|
||
(source
|
||
(origin
|
||
(method url-fetch)
|
||
(uri
|
||
(string-append "mirror://sourceforge/openjpeg.mirror/" name "-"
|
||
version ".tar.gz"))
|
||
(sha256
|
||
(base32 "11waq9w215zvzxrpv40afyd18qf79mxc28fda80bm3ax98cpppqm"))))))
|
||
|
||
(define-public giflib
|
||
(package
|
||
(name "giflib")
|
||
(version "4.2.3")
|
||
(source (origin
|
||
(method url-fetch)
|
||
(uri (string-append "mirror://sourceforge/giflib/giflib-"
|
||
(first (string-split version #\.))
|
||
".x/giflib-" version ".tar.bz2"))
|
||
(sha256
|
||
(base32 "0rmp7ipzk42r841bggd7bfqk4p8qsssbp4wcck4qnz7p4rkxbj0a"))))
|
||
(build-system gnu-build-system)
|
||
(outputs '("bin" ; utility programs
|
||
"out")) ; library
|
||
(inputs `(("libx11" ,libx11)
|
||
("libice" ,libice)
|
||
("libsm" ,libsm)
|
||
("perl" ,perl)))
|
||
(arguments
|
||
`(#:phases (alist-cons-after
|
||
'unpack 'disable-html-doc-gen
|
||
(lambda _
|
||
(substitute* "doc/Makefile.in"
|
||
(("^all: allhtml manpages") "")))
|
||
(alist-cons-after
|
||
'install 'install-manpages
|
||
(lambda* (#:key outputs #:allow-other-keys)
|
||
(let* ((bin (assoc-ref outputs "bin"))
|
||
(man1dir (string-append bin "/share/man/man1")))
|
||
(mkdir-p man1dir)
|
||
(for-each (lambda (file)
|
||
(let ((base (basename file)))
|
||
(format #t "installing `~a' to `~a'~%"
|
||
base man1dir)
|
||
(copy-file file
|
||
(string-append
|
||
man1dir "/" base))))
|
||
(find-files "doc" "\\.1"))))
|
||
%standard-phases))))
|
||
(synopsis "Tools and library for working with GIF images")
|
||
(description
|
||
"GIFLIB is a library for reading and writing GIF images. It is API and
|
||
ABI compatible with libungif which was in wide use while the LZW compression
|
||
algorithm was patented. Tools are also included to convert, manipulate,
|
||
compose, and analyze GIF images.")
|
||
(home-page "http://giflib.sourceforge.net/")
|
||
(license license:x11)))
|
||
|
||
(define-public libungif
|
||
(package
|
||
(name "libungif")
|
||
(version "4.1.4")
|
||
(source (origin
|
||
(method url-fetch)
|
||
(uri (string-append "mirror://sourceforge/giflib/libungif-"
|
||
version ".tar.bz2"))
|
||
(sha256
|
||
(base32
|
||
"0cnksimmmjngdrys302ik1385sg1sj4i0gxivzldhgwd46n7x2kh"))))
|
||
(build-system gnu-build-system)
|
||
(inputs `(("perl" ,perl))) ;package ships some perl tools
|
||
(home-page "http://giflib.sourceforge.net/")
|
||
(synopsis "GIF decompression library")
|
||
(description
|
||
"libungif is the old GIF decompression library by the GIFLIB project.")
|
||
(license license:expat)))
|
||
|
||
(define-public imlib2
|
||
(package
|
||
(name "imlib2")
|
||
(version "1.4.7")
|
||
(source (origin
|
||
(method url-fetch)
|
||
(uri (string-append
|
||
"mirror://sourceforge/enlightenment/imlib2-"
|
||
version ".tar.bz2"))
|
||
(sha256
|
||
(base32
|
||
"00a7jbwj10x3jcvxa5rplnkvhv35gv9rb400zy636zdd4g737mrm"))))
|
||
(build-system gnu-build-system)
|
||
(native-inputs
|
||
`(("pkgconfig" ,pkg-config)))
|
||
(inputs
|
||
`(("libx11" ,libx11)
|
||
("libxext" ,libxext)
|
||
("freetype" ,freetype)
|
||
("libjpeg" ,libjpeg)
|
||
("libpng" ,libpng)
|
||
("libtiff" ,libtiff)
|
||
("giflib" ,giflib)
|
||
("bzip2" ,bzip2)))
|
||
(home-page "http://sourceforge.net/projects/enlightenment/")
|
||
(synopsis
|
||
"Loading, saving, rendering and manipulating image files")
|
||
(description
|
||
"Imlib2 is a library that does image file loading and saving as well as
|
||
rendering, manipulation, arbitrary polygon support, etc.
|
||
|
||
It does ALL of these operations FAST. Imlib2 also tries to be highly
|
||
intelligent about doing them, so writing naive programs can be done easily,
|
||
without sacrificing speed.
|
||
|
||
This is a complete rewrite over the Imlib 1.x series. The architecture is
|
||
more modular, simple, and flexible.")
|
||
(license license:imlib2)))
|
||
|
||
(define-public giblib
|
||
(package
|
||
(name "giblib")
|
||
(version "1.2.4")
|
||
(source (origin
|
||
(method url-fetch)
|
||
(uri (string-append
|
||
"http://linuxbrit.co.uk/downloads/giblib-"
|
||
version ".tar.gz"))
|
||
(sha256
|
||
(base32
|
||
"1b4bmbmj52glq0s898lppkpzxlprq9aav49r06j2wx4dv3212rhp"))))
|
||
(build-system gnu-build-system)
|
||
(inputs
|
||
`(("libx11" ,libx11)
|
||
("imlib2" ,imlib2)))
|
||
(home-page "http://linuxbrit.co.uk/software/") ; no real home-page
|
||
(synopsis "Wrapper library for imlib2")
|
||
(description
|
||
"Giblib is a simple library which wraps imlib2's context API, avoiding
|
||
all the context_get/set calls, adds fontstyles to the truetype renderer and
|
||
supplies a generic doubly-linked list and some string functions.")
|
||
;; This license removes a clause about X Consortium from the original
|
||
;; X11 license.
|
||
(license (license:x11-style "file://COPYING"
|
||
"See 'COPYING' in the distribution."))))
|
||
|
||
(define-public freeimage
|
||
(package
|
||
(name "freeimage")
|
||
(version "3.16.0")
|
||
(source (origin
|
||
(method url-fetch)
|
||
(uri (string-append
|
||
"mirror://sourceforge/freeimage/Source%20Distribution/"
|
||
version "/FreeImage"
|
||
(string-join (string-split version #\.) "")
|
||
".zip"))
|
||
(sha256
|
||
(base32
|
||
"0q1gnjnxgphsh4l8i9rfly4bi8xsczsb9ryzbm8hf38lc3fk5bq3"))))
|
||
(build-system gnu-build-system)
|
||
(arguments
|
||
'(#:phases (alist-delete
|
||
'configure
|
||
(alist-cons-before
|
||
'build 'patch-makefile
|
||
(lambda* (#:key outputs #:allow-other-keys)
|
||
(substitute* "Makefile.gnu"
|
||
(("/usr") (assoc-ref outputs "out"))
|
||
(("-o root -g root") "")))
|
||
%standard-phases))
|
||
#:make-flags '("CC=gcc")
|
||
#:tests? #f)) ; no check target
|
||
(native-inputs
|
||
`(("unzip" ,unzip)))
|
||
;; Fails to build on MIPS due to assembly code in the source.
|
||
(supported-systems (delete "mips64el-linux" %supported-systems))
|
||
(synopsis "Library for handling popular graphics image formats")
|
||
(description
|
||
"FreeImage is a library for developers who would like to support popular
|
||
graphics image formats like PNG, BMP, JPEG, TIFF and others.")
|
||
(license license:gpl2+)
|
||
(home-page "http://freeimage.sourceforge.net")))
|
||
|
||
(define-public vigra
|
||
(package
|
||
(name "vigra")
|
||
(version "1.10.0")
|
||
(source
|
||
(origin
|
||
(method url-fetch)
|
||
(uri (string-append "https://hci.iwr.uni-heidelberg.de/vigra/vigra-"
|
||
version "-src.tar.gz"))
|
||
(sha256 (base32
|
||
"16d0jvz3k49niljg9qvvlyxxl15yk0300xkymvyznlmvn1hs7m22"))))
|
||
(build-system cmake-build-system)
|
||
(inputs
|
||
`(("boost" ,boost)
|
||
("fftw" ,fftw)
|
||
("fftwf" ,fftwf)
|
||
("hdf5" ,hdf5)
|
||
("libjpeg" ,libjpeg)
|
||
("libpng" ,libpng)
|
||
("libtiff" ,libtiff)
|
||
("python" ,python-2) ; print syntax
|
||
("python2-numpy" ,python2-numpy)
|
||
("zlib" ,zlib)))
|
||
(native-inputs
|
||
`(("doxygen" ,doxygen)
|
||
("python2-nose" ,python2-nose)
|
||
("python2-sphinx" ,python2-sphinx)))
|
||
(arguments
|
||
`(#:test-target "check"
|
||
#:configure-flags
|
||
(list "-Wno-dev" ; suppress developer mode with lots of warnings
|
||
(string-append "-DVIGRANUMPY_INSTALL_DIR="
|
||
(assoc-ref %outputs "out")
|
||
"/lib/python2.7/site-packages"))))
|
||
(synopsis "Computer vision library")
|
||
(description
|
||
"VIGRA stands for Vision with Generic Algorithms. It is an image
|
||
processing and analysis library that puts its main emphasis on customizable
|
||
algorithms and data structures. It is particularly strong for
|
||
multi-dimensional image processing.")
|
||
(license license:expat)
|
||
(home-page "https://hci.iwr.uni-heidelberg.de/vigra")))
|
||
|
||
(define-public libwebp
|
||
(package
|
||
(name "libwebp")
|
||
(version "0.4.3")
|
||
(source
|
||
(origin
|
||
(method url-fetch)
|
||
(uri (string-append
|
||
"http://downloads.webmproject.org/releases/webp/libwebp-" version
|
||
".tar.gz"))
|
||
(sha256
|
||
(base32 "1i4hfczjm3b1qj1g4cc9hgb69l47f3nkgf6hk7nz4dm9zmc0vgpg"))))
|
||
(build-system gnu-build-system)
|
||
(inputs
|
||
`(("freeglut" ,freeglut)
|
||
("giflib" ,giflib)
|
||
("libjpeg" ,libjpeg)
|
||
("libpng" ,libpng)
|
||
("libtiff" ,libtiff)))
|
||
(arguments
|
||
'(#:configure-flags '("--enable-libwebpmux"
|
||
"--enable-libwebpdemux"
|
||
"--enable-libwebpdecoder")))
|
||
(home-page "https://developers.google.com/speed/webp/")
|
||
(synopsis "Lossless and lossy image compression")
|
||
(description
|
||
"WebP is a new image format that provides lossless and lossy compression
|
||
for images. WebP lossless images are 26% smaller in size compared to
|
||
PNGs. WebP lossy images are 25-34% smaller in size compared to JPEG images at
|
||
equivalent SSIM index. WebP supports lossless transparency (also known as
|
||
alpha channel) with just 22% additional bytes. Transparency is also supported
|
||
with lossy compression and typically provides 3x smaller file sizes compared
|
||
to PNG when lossy compression is acceptable for the red/green/blue color
|
||
channels.")
|
||
(license license:bsd-3)))
|