03/08: gnu: Add libwebp.

[Taylan Ulrich B.]

taylanub pushed a commit to branch master
in repository guix.

commit 060ad3def45745e26c4ce75883eb1d3ae22d6839
Author: Taylan Ulrich Bayırlı/Kammer <address@hidden>
Date:   Sat Mar 21 19:40:21 2015 +0100

    gnu: Add libwebp.
    
    * gnu/packages/image.scm (libwebp): New variable.
---
 gnu/packages/image.scm |   37 +++++++++++++++++++++++++++++++++++++
 1 files changed, 37 insertions(+), 0 deletions(-)

diff --git a/gnu/packages/image.scm b/gnu/packages/image.scm
index 11cb63a..9c7e504 100644
--- a/gnu/packages/image.scm
+++ b/gnu/packages/image.scm
@@ -29,6 +29,7 @@
   #: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)
@@ -475,3 +476,39 @@ 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)))