;;; GNU Guix --- Functional package management for GNU

;;; Copyright © 2017 Julien Lepiller <julien@lepiller.eu>

;;;

;;; 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 (more packages opencv)

  #:use-module ((guix licenses) #:prefix license:)

  #:use-module (gnu packages)

  #:use-module (guix packages)

  #:use-module (guix download)

  #:use-module (guix utils)

  #:use-module (gnu packages compression)

  #:use-module (gnu packages documentation)

  #:use-module (gnu packages gl)

  #:use-module (gnu packages graphics)

  #:use-module (gnu packages gstreamer)

  #:use-module (gnu packages gtk)

  #:use-module (gnu packages image)

  #:use-module (gnu packages photo)

  #:use-module (gnu packages pkg-config)

  #:use-module (gnu packages video)

  #:use-module (gnu packages zip)

  #:use-module (guix build-system cmake)

  #:use-module (guix build-system python))

(define-public opencv

  (package

    (name "opencv")

    (version "3.2.0")

    (source (origin

              (method url-fetch)

              (uri (string-append "https://github.com/opencv/opencv/archive/"

                                  version ".zip"))

              (file-name (string-append name "-" version ".zip"))

              (sha256

               (base32

                "0p0ppp3p7xnn4ah9g3a9nh7wav2jg2zq3mz1vnd50bk6aknhq06j"))))

    (build-system cmake-build-system)

    (native-inputs

     `(("doxygen" ,doxygen)

       ("unzip" ,unzip)

       ("pkg-config" ,pkg-config)))

    (inputs

     `(("ffmpeg" ,ffmpeg)

       ("gstreamer" ,gstreamer)

       ("gtk-3" ,gtk+)

       ("ilmbase" ,ilmbase)

       ("jasper" ,jasper)

       ("libgpoto2" ,libgphoto2)

       ("libjpeg-turbo" ,libjpeg-turbo)

       ("libpng" ,libpng)

       ("libtiff" ,libtiff)

       ("libwebp" ,libwebp)

       ("mesa" ,mesa)

       ("openexr" ,openexr)

       ("zlib" ,zlib)))

    (arguments

     ;; This thing has a strange license

     `(#:configure-flags (list "-DWITH_IPP=OFF")

       #:tests? #f; they're just too long

       #:phases

       (modify-phases %standard-phases

         (add-before 'configure 'remove-3rdparties

           (lambda _

             (delete-file-recursively "3rdparty")))

         (add-after 'set-paths 'add-ilmbase-include-path

           (lambda* (#:key inputs #:allow-other-keys)

             ;; OpenEXR propagates ilmbase, but its include files do not appear

             ;; in the CPATH, so we need to add "$ilmbase/include/OpenEXR/" to

             ;; the CPATH to satisfy the dependency on "half.h".

             (setenv "CPATH"

                     (string-append (assoc-ref inputs "ilmbase")

                                    "/include/OpenEXR"

                                    ":" (or (getenv "CPATH") "")))

             #t)))))

    (home-page "http://opencv.org/")

    (synopsis "Computer vision and machine learning software library")

    (description

     "OpenCV (Open Source Computer Vision Library) is an open source computer

vision and machine learning software library.")

    (license license:bsd-3)))