[PATCH] Add zimg.

[Efraim Flashner <efraim@flashner.co.il>]

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here's a patch to add zimg, a new dependency for vapoursynth in versions
29 and above.

-- 
Efraim Flashner   <efraim@flashner.co.il>   אפרים פלשנר
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From 280b1d63e16d223eb29291421b652a13bc077795 Mon Sep 17 00:00:00 2001
From: Efraim Flashner <efraim@flashner.co.il>
Date: Sun, 29 May 2016 14:48:42 +0300
Subject: [PATCH] gnu: Add zimg.

* gnu/packages/image.scm (zimg): New variable.
---
 gnu/packages/image.scm | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/gnu/packages/image.scm b/gnu/packages/image.scm
index 3651e97..17d1bdd 100644
--- a/gnu/packages/image.scm
+++ b/gnu/packages/image.scm
@@ -766,3 +766,35 @@ implementation of the codec specified in the JPEG-2000 Part-1 standard (i.e.,
 ISO/IEC 15444-1).")
     (home-page "https://www.ece.uvic.ca/~frodo/jasper/")
     (license (license:x11-style "file://LICENSE"))))
+
+(define-public zimg
+  (package
+    (name "zimg")
+    (version "2.1")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (string-append "https://github.com/sekrit-twc/zimg/archive/"
+                            "release-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1hqp1gcsa2zhypms5dnasb1srjgxdqm7cip3w5i571kk9nxkn289"))))
+    (build-system gnu-build-system)
+    (native-inputs
+     `(("autoconf" ,autoconf)
+       ("automake" ,automake)
+       ("libtool" ,libtool)))
+    (arguments
+     '(#:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'autogen
+           (lambda _
+             (zero? (system* "sh" "autogen.sh")))))))
+    (synopsis "Scaling, colorspace conversion, and dithering library")
+    (description "Zimg implements the commonly required image processing basics
+of scaling, colorspace conversion, and depth conversion.  A simple API enables
+conversion between any supported formats to operate with minimal knowledge from
+the programmer.")
+    (home-page "https://github.com/sekrit-twc/zimg")
+    (license (license:fsf-free "file://COPYING")))) ;WTFPL version 2
-- 
2.8.3


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