;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013, 2015 Andreas Enge <andreas@enge.fr>
;;; Copyright © 2014 John Darrington <jmd@gnu.org>
;;; Copyright © 2015, 2016 Sou Bunnbu <iyzsong@gmail.com>
;;; Copyright © 2015, 2018 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2016, 2017 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2016, 2018 Leo Famulari <leo@famulari.name>
;;; Copyright © 2017 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2018 Tobias Geerinckx-Rice <me@tobias.gr>
;;; Copyright © 2019, 2020 Marius Bakke <mbakke@fastmail.com>
;;; Copyright © 2020 Leo Prikler <leo.prikler@student.tugraz.at>
;;;
;;; 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 gstreamer)
  #:use-module ((guix licenses) #:prefix license:)
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module (guix git-download)
  #:use-module (guix build-system cmake)
  #:use-module (guix build-system gnu)
  #:use-module (guix build-system meson)
  #:use-module (guix utils)
  #:use-module (gnu packages)
  #:use-module (gnu packages audio)
  #:use-module (gnu packages autotools)
  #:use-module (gnu packages base)
  #:use-module (gnu packages bash)
  #:use-module (gnu packages bison)
  #:use-module (gnu packages cdrom)
  #:use-module (gnu packages curl)
  #:use-module (gnu packages compression)
  #:use-module (gnu packages docbook)
  #:use-module (gnu packages elf)
  #:use-module (gnu packages flex)
  #:use-module (gnu packages freedesktop)
  #:use-module (gnu packages gettext)
  #:use-module (gnu packages gl)
  #:use-module (gnu packages glib)
  #:use-module (gnu packages gnome)
  #:use-module (gnu packages gnupg)
  #:use-module (gnu packages graphics)
  #:use-module (gnu packages gtk)
  #:use-module (gnu packages image)
  #:use-module (gnu packages iso-codes)
  #:use-module (gnu packages libunwind)
  #:use-module (gnu packages libusb)
  #:use-module (gnu packages linux)
  #:use-module (gnu packages maths)
  #:use-module (gnu packages mp3)
  #:use-module (gnu packages multiprecision)
  #:use-module (gnu packages ncurses)
  #:use-module (gnu packages networking)
  #:use-module (gnu packages ocr)
  #:use-module (gnu packages perl)
  #:use-module (gnu packages pulseaudio)
  #:use-module (gnu packages qt)
  #:use-module (gnu packages rdf)
  #:use-module (gnu packages shells)
  #:use-module (gnu packages sdl)
  #:use-module (gnu packages video)
  #:use-module (gnu packages xorg)
  #:use-module (gnu packages xiph)
  #:use-module (gnu packages pkg-config)
  #:use-module (gnu packages python)
  #:use-module (gnu packages ssh)
  #:use-module (gnu packages telephony)
  #:use-module (gnu packages tls)
  #:use-module (gnu packages version-control)
  #:use-module (gnu packages assembly)
  #:use-module (gnu packages xml))

(define-public ccextractor
  (package
    (name "ccextractor")
    (version "0.88")
    (source
     (origin
       (method git-fetch)
       (uri
        (git-reference
         (url "https://github.com/CCExtractor/ccextractor.git")
         (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "1sya45hvv4d46bk7541yimmafgvgyhkpsvwfz9kv6pm4yi1lz6nb"))))
    (build-system cmake-build-system)
    (arguments
     `(#:tests? #f                      ; No target
       #:configure-flags
       (list
        "-DWITH_FFMPEG=ON"
        "-DWITH_OCR=ON"
        ;; XXX: NanoMsg libraries are not being detected.
        ;; "-DWITH_SHARING=ON"
        "-DWITH_HARDSUBX=ON")
       #:phases
       (modify-phases %standard-phases
         ;; The package is in a sub-dir of this repo.
         (add-after 'unpack 'chdir
           (lambda _
             (chdir "src")
             #t)))))
    (native-inputs
     `(("perl" ,perl)
       ("pkg-config" ,pkg-config)
       ("python" ,python-wrapper)))
    (inputs
     `(("ffmeg" ,ffmpeg-3.4)
       ;; XXX: NanoMsg libraries are not being detected.
       ;; ("libnanomsg" ,nanomsg)
       ("ocr" ,tesseract-ocr)
       ("zlib" ,zlib)))
    (synopsis "Closed Caption Extractor")
    (description "CCExtractor is a tool that analyzes video files and produces
independent subtitle files from the closed captions data.  It is portable, small,
and very fast.")
    (home-page "https://www.ccextractor.org/")
    (license license:gpl2+)))

(define-public libvisual
  (package
    (name "libvisual")
    (version "0.4.0")
    (source
     (origin
       (method git-fetch)
       (uri
        (git-reference
         (url "https://github.com/Libvisual/libvisual.git")
         (commit (string-append name "-" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "02xwakwkqjsznc03pjlb6hcv1li1gw3r8xvyswqsm4msix5xq18a"))))
    (build-system gnu-build-system)
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         ;; The package is in a sub-dir of this repo.
         (add-after 'unpack 'chdir
           (lambda _
             (chdir "libvisual")
             #t)))))
    (native-inputs
     `(("gettext" ,gettext-minimal)
       ("libintl" ,intltool)
       ("libtool" ,libtool)
       ("pkg-config" ,pkg-config)
       ("sdl" ,sdl)))          ; To compile some examples and/or tests
    (synopsis "Audio visualisation library")
    (description "Libvisual is a library that acts as a middle layer between
applications that want audio visualisation and audio visualisation plugins.")
    (home-page "http://libvisual.org/")
    (license
     (list
      ;; Libraries.
      license:lgpl2.1+
      ;; Examples and Tests.
      license:gpl2+))))

(define-public esound
  (package
    (name "esound")
    (version "0.2.41")
    (source
     (origin
       (method git-fetch)
       (uri
        (git-reference
         (url "https://gitlab.gnome.org/Archive/esound.git")
         (commit "ESOUND_0_2_41")))
       (file-name (git-file-name name version))
       (sha256
        (base32 "141jg70fim276i8k2kyypm84gy89i1k9mm4yf68mfwnybvjw1d6n"))))
    (build-system gnu-build-system)
    (native-inputs
     `(("autoconf" ,autoconf)
       ("automake" ,automake)
       ("gettext" ,gettext-minimal)
       ("gnome-common" ,gnome-common)
       ("libtool" ,libtool)
       ("pkg-config" ,pkg-config)
       ("tcp-wrappers" ,tcp-wrappers)
       ("tcsh" ,tcsh)
       ("which" ,which)))
    (inputs
     `(("alsa-lib" ,alsa-lib)
       ("pcaudiolib" ,pcaudiolib)))
    (propagated-inputs
     `(("audiofile" ,audiofile)))
    (synopsis "Enlightened Sound Daemon")
    (description "The Enlightened Sound Daemon mixes several audio streams for
playback by a single audio device.  You can also pre-load samples, and play them
back without having to send all the data for the sound.  Network transparency is
also built in, so you can play sounds on one machine, and listen to them on
another.")
    (home-page "https://web.archive.org/web/20160528230227/
http://www.tux.org/~ricdude/overview.html")
    (license
     (list
      ;; Libraries.
      license:lgpl2.0+
      ;; Others.
      license:gpl2+))))

(define-public libvisual-plugins
  (package
    (name "libvisual-plugins")
    (version "0.4.0")
    (source
     (origin
       (method git-fetch)
       (uri
        (git-reference
         (url "https://github.com/Libvisual/libvisual.git")
         (commit (string-append name "-" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "02xwakwkqjsznc03pjlb6hcv1li1gw3r8xvyswqsm4msix5xq18a"))))
    (build-system gnu-build-system)
    (arguments
     `(#:configure-flags
       (list
        "--disable-gstreamer-plugin"
        "--disable-corona"
        "--disable-gforce"
        (string-append "--with-plugins-base-dir=" (assoc-ref %outputs "out")
                       "/lib/libvisual-0.4"))
       #:phases
       (modify-phases %standard-phases
         ;; The package is in a sub-dir of this repo.
         (add-after 'unpack 'chdir
           (lambda _
             (chdir "libvisual-plugins")
             #t)))))
    (native-inputs
     `(("bison" ,bison)
       ("flex" ,flex)
       ("gettext" ,gettext-minimal)
       ("libintl" ,intltool)
       ("libtool" ,libtool)
       ("pkg-config" ,pkg-config)))
    (inputs
     `(("alsa-lib" ,alsa-lib)
       ("esound" ,esound)
       ("gdk-pixbuf" ,gdk-pixbuf+svg)
       ("gtk+" ,gtk+-2)
       ("jack" ,jack-2)
       ("libx11" ,libx11)
       ("libxext" ,libxext)))
    (propagated-inputs
     `(("libvisual" ,libvisual)))
    (native-search-paths
     (list
      (search-path-specification
       (variable "LIBVISUAL_PLUGINS_BASE_DIR")
       (files '("lib/libvisual-0.4")))))
    (search-paths native-search-paths)
    (synopsis "Audio visualisation library")
    (description "Libvisual is a library that acts as a middle layer between
applications that want audio visualisation and audio visualisation plugins.")
    (home-page "http://libvisual.org/")
    (license license:gpl2+)))

(define-public orc
  (package
    (name "orc")
    (version "0.4.31")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://gstreamer.freedesktop.org/data/src/"
                                  "orc/orc-" version ".tar.xz"))
              (sha256
               (base32
                "0xb0c7q3xv1ldmz5ipybazb01gy3cijj8622dcx7rbm9lq85zax0"))))
    (build-system meson-build-system)
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'disable-faulty-test
           (lambda _
             ;; XXX Disable the 'test-limits' and 'exec_opcodes_sys'
             ;; tests, which fail on some machines.  See:
             ;; https://bugzilla.gnome.org/show_bug.cgi?id=735273
             (substitute* '("testsuite/test-limits.c"
                            "testsuite/exec_opcodes_sys.c")
               (("if \\(error\\) return 1;")
                "if (error) return 77;"))
             #t)))))
    (native-inputs
     `(("gtk-doc" ,gtk-doc)))
    (home-page "https://gstreamer.freedesktop.org/modules/orc.html")
    (synopsis "Oil runtime compiler")
    (description
     "Orc is a just-in-time compiler implemented as a library and set of
associated tools for compiling and executing simple programs that operate on
arrays of data.")
    ;; The source code implementing the Marsenne Twister algorithm is licensed
    ;; under the 3-clause BSD license, the rest is under 2-clause BSD license.
    (license (list license:bsd-2 license:bsd-3))))

(define-public gstreamer
  (package
    (name "gstreamer")
    (version "1.16.2")
    (source
     (origin
       (method url-fetch)
       (uri
        (string-append
         "https://gstreamer.freedesktop.org/src/gstreamer/gstreamer-"
         version ".tar.xz"))
       (sha256
        (base32 "0kp93622y29pck8asvil1fmzf55s2gx76wv475a6izc3cwj49w73"))))
    (build-system meson-build-system)
    (outputs '("out" "doc"))
    (arguments
     `(#:glib-or-gtk? #t     ; To wrap binaries and/or compile schemas
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'patch-docbook-xml
           (lambda* (#:key inputs #:allow-other-keys)
             (with-directory-excursion "docs"
               (substitute* '("gst/building.xml" "gst/running.xml")
                 (("http://www.oasis-open.org/docbook/xml/4.3/")
                  (string-append (assoc-ref inputs "docbook-xml-4.3")
                                 "/xml/dtd/docbook/")))
               (substitute* '("libs/gstreamer-libs-docs.sgml"
                              "plugins/gstreamer-plugins-docs.sgml")
                 (("http://www.oasis-open.org/docbook/xml/4.1.2/")
                  (string-append (assoc-ref inputs "docbook-xml-4.1.2")
                                 "/xml/dtd/docbook/"))))
             #t))
         (add-after 'install 'move-docs
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (doc (assoc-ref outputs "doc")))
               (mkdir-p (string-append doc "/share"))
               (rename-file
                (string-append out "/share/gtk-doc")
                (string-append doc "/share/gtk-doc"))
               #t))))))
    (native-inputs
     `(("bash-completion" ,bash-completion)
       ("bison" ,bison)
       ("docbook-xml-4.1.2" ,docbook-xml-4.1.2)
       ("docbook-xml-4.3" ,docbook-xml-4.3)
       ("docbook-xsl" ,docbook-xsl)
       ("flex" ,flex)
       ("gettext" ,gettext-minimal)
       ("glib" ,glib "bin")
       ("gobject-introspection" ,gobject-introspection)
       ("gtk-doc" ,gtk-doc)
       ("libxml2" ,libxml2)
       ("perl" ,perl)
       ("pkg-config" ,pkg-config)
       ("python-wrapper" ,python-wrapper)))
    (inputs
     `(("gmp" ,gmp)
       ("gsl" ,gsl)
       ("gtk+" ,gtk+)
       ("setcap" ,libcap)))
    (propagated-inputs
     `(("glib" ,glib)
       ("glib-networking" ,glib-networking)
       ("libdw" ,elfutils)
       ("libunwind" ,libunwind)))
    (native-search-paths
     (list
      (search-path-specification
       (variable "GST_PLUGIN_SYSTEM_PATH")
       (files '("lib/gstreamer-1.0")))))
    (synopsis "Multimedia framework core library")
    (description "GStreamer is a library for constructing graphs of
media-handling components.  The applications it supports range from simple
Ogg/Vorbis playback, audio/video streaming to complex audio and video
processing.")
    (home-page "https://gstreamer.freedesktop.org/")
    (license license:lgpl2.0+)))

(define-public gst-plugins-base
  (package
    (name "gst-plugins-base")
    (version "1.16.2")
    (source
     (origin
       (method url-fetch)
       (uri
        (string-append "https://gstreamer.freedesktop.org/src/" name "/"
                       name "-" version ".tar.xz"))
       (sha256
        (base32 "0sl1hxlyq46r02k7z70v09vx1gi4rcypqmzra9jid93lzvi76gmi"))))
    (build-system meson-build-system)
    (outputs '("out" "doc"))
    (arguments
     `(#:glib-or-gtk? #t     ; To wrap binaries and/or compile schemas
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'patch-docbook-xml
           (lambda* (#:key inputs #:allow-other-keys)
             (with-directory-excursion "docs"
               (substitute* '("libs/compiling.sgml"
                              "libs/gst-plugins-base-libs-docs.sgml")
                 (("http://www.oasis-open.org/docbook/xml/4.1.2/")
                  (string-append (assoc-ref inputs "docbook-xml")
                                 "/xml/dtd/docbook/"))))
             #t))
         (add-after 'unpack 'patch-tests
           (lambda _
             (substitute* "tests/check/libs/pbutils.c"
               (("/bin/sh") (which "sh")))
             #t))
         (add-before
             'check 'pre-check
           (lambda _
             ;; Tests require a running X server.
             (system "Xvfb :1 +extension GLX &")
             (setenv "DISPLAY" ":1")
             ;; Tests write to $HOME.
             (setenv "HOME" (getcwd))
             ;; Tests look for $XDG_RUNTIME_DIR.
             (setenv "XDG_RUNTIME_DIR" (getcwd))
             ;; For missing '/etc/machine-id'.
             (setenv "DBUS_FATAL_WARNINGS" "0")
             #t))
         (add-after 'install 'move-doc
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (doc (assoc-ref outputs "doc")))
               (mkdir-p (string-append doc "/share"))
               (rename-file
                (string-append out "/share/gtk-doc")
                (string-append doc "/share/gtk-doc"))
               #t))))))
    (native-inputs
     `(("docbook-xml" ,docbook-xml-4.1.2)
       ("gettext" ,gettext-minimal)
       ("glib:bin" ,glib "bin")
       ("gobject-introspection" ,gobject-introspection)
       ("gtk-doc" ,gtk-doc)
       ("gsettings-desktop-schemas" ,gsettings-desktop-schemas)
       ("perl" ,perl)
       ("pkg-config" ,pkg-config)
       ("python-wrapper" ,python-wrapper)
       ("xmllint" ,libxml2)
       ("xorg-server" ,xorg-server-for-tests)))
    (inputs
     `(("alsa-lib" ,alsa-lib)
       ("cdparanoia" ,cdparanoia)
       ("gdk-pixbuf" ,gdk-pixbuf+svg)
       ("glu" ,glu)
       ("graphene" ,graphene)
       ("gtk+" ,gtk+)
       ("iso-codes" ,iso-codes)
       ("libgudev" ,libgudev)
       ("libjpeg" ,libjpeg-turbo)
       ("libogg" ,libogg)
       ("libtheora" ,libtheora)
       ("libvisual" ,libvisual)
       ("libvorbis" ,libvorbis)
       ("libx11" ,libx11)
       ("libxext" ,libxext)
       ("libxshm" ,libxshmfence)
       ("libxv" ,libxv)
       ("mesa" ,mesa)
       ("opus" ,opus)
       ("pango" ,pango)
       ("sdl" ,sdl)
       ("wayland" ,wayland)
       ("zlib" ,zlib)))
    (propagated-inputs
     `(("glib" ,glib)
       ("glib-networking" ,glib-networking)
       ("gstreamer" ,gstreamer)
       ("orc" ,orc)))
    (synopsis "GStreamer plugins and helper libraries")
    (description "Gst-Plugins-Base is a well-groomed and well-maintained
collection of GStreamer plug-ins and elements, spanning the range of possible
types of elements one would want to write for GStreamer.")
    (home-page "https://gstreamer.freedesktop.org/")
    (license license:lgpl2.0+)))

(define-public gst-plugins-good
  (package
    (name "gst-plugins-good")
    (version "1.16.2")
    (source
     (origin
       (method url-fetch)
       (uri
        (string-append
         "https://gstreamer.freedesktop.org/src/" name "/"
         name "-" version ".tar.xz"))
       (sha256
        (base32 "068k3cbv1yf3gbllfdzqsg263kzwh21y8dpwr0wvgh15vapkpfs0"))))
    (build-system meson-build-system)
    (arguments
     `(#:glib-or-gtk? #t     ; To wrap binaries and/or compile schemas
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'patch-docbook-xml
           (lambda* (#:key inputs #:allow-other-keys)
             (with-directory-excursion "docs"
               (substitute* "plugins/gst-plugins-good-plugins-docs.sgml"
                 (("http://www.oasis-open.org/docbook/xml/4.1.2/")
                  (string-append (assoc-ref inputs "docbook-xml")
                                 "/xml/dtd/docbook/"))))
             #t))
         (add-before
             'check 'pre-check
           (lambda _
             ;; Tests require a running X server.
             (system "Xvfb :1 +extension GLX &")
             (setenv "DISPLAY" ":1")
             ;; Tests write to $HOME.
             (setenv "HOME" (getcwd))
             ;; Tests look for $XDG_RUNTIME_DIR.
             (setenv "XDG_RUNTIME_DIR" (getcwd))
             ;; For missing '/etc/machine-id'.
             (setenv "DBUS_FATAL_WARNINGS" "0")
             #t)))))
    (native-inputs
     `(("docbook-xml" ,docbook-xml-4.1.2)
       ("gettext" ,gettext-minimal)
       ("glib:bin" ,glib "bin")
       ("gobject-introspection" ,gobject-introspection)
       ("gsettings-desktop-schemas" ,gsettings-desktop-schemas)
       ("perl" ,perl)
       ("pkg-config" ,pkg-config)
       ("python-wrapper" ,python-wrapper)
       ("xmllint" ,libxml2)
       ("xorg-server" ,xorg-server-for-tests)))
    (inputs
     `(("aalib" ,aalib)
       ("bzip2" ,bzip2)
       ("cairo" ,cairo)
       ("flac" ,flac)
       ("gdk-pixbuf" ,gdk-pixbuf+svg)
       ("glib" ,glib)
       ("glib-networking" ,glib-networking)
       ("glu" ,glu)
       ("gtk+" ,gtk+)
       ("jack" ,jack-2)
       ("lame" ,lame)
       ("libavc1394" ,libavc1394)
       ("libcaca" ,libcaca)
       ("libdv" ,libdv)
       ("libgudev" ,libgudev)
       ("libiec61883" ,libiec61883)
       ("libjpeg" ,libjpeg-turbo)
       ("libpng" ,libpng)
       ("libshout" ,libshout)
       ("libsoup" ,libsoup)
       ("libvpx" ,libvpx)
       ("libx11" ,libx11)
       ("libxdamage" ,libxdamage)
       ("libxfixes" ,libxfixes)
       ("libxext" ,libxext)
       ("libxshm" ,libxshmfence)
       ("mesa" ,mesa)
       ("mpg123" ,mpg123)
       ("orc" ,orc)
       ("pulseaudio" ,pulseaudio)
       ("speex" ,speex)
       ("taglib" ,taglib)
       ("twolame" ,twolame)
       ("v4l-utils" ,v4l-utils)
       ("wavpack" ,wavpack)
       ("zlib" ,zlib)))
    (propagated-inputs
     `(("gstreamer" ,gstreamer)
       ("gst-plugins-base" ,gst-plugins-base)))
    (synopsis "GStreamer plugins and helper libraries")
    (description "GStreamer-Plugins-Good is a collection of plug-ins you'd want
to have right next to you on the battlefield.  Shooting sharp and making no
mistakes, these plug-ins have it all: good looks, good code, and good
licensing.  Documented and dressed up in tests.  If you're looking for a role
model to base your own plug-in on, here it is.")
    (home-page "https://gstreamer.freedesktop.org/")
    (license license:lgpl2.0+)))

(define-public gst-plugins-bad
  (package
    (name "gst-plugins-bad")
    (version "1.16.2")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://gstreamer.freedesktop.org/src/"
                                  name "/" name "-" version ".tar.xz"))
              (sha256
               (base32
                "0x0y0hm0ga3zqi5q4090hw5sjh59y1ry9ak16qsaascm72i7mjzi"))))
    (build-system meson-build-system)
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         ,@(if (string-prefix? "arm" (or (%current-target-system)
                                         (%current-system)))
               ;; Disable test that fails on ARMv7.
               ;; https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/issues/1188
               `((add-after 'unpack 'disable-asfmux-test
                   (lambda _
                     (substitute* "tests/check/meson.build"
                       (("\\[\\['elements/asfmux\\.c'\\]\\],")
                        ""))
                     #t)))
               '())
         (add-after 'unpack 'disable-failing-test
           (lambda _
             ;; FIXME: Why is this failing.
             (substitute* "tests/check/meson.build"
               ((".*elements/dash_mpd\\.c.*")
                ""))
             #t)))))
    (propagated-inputs
     `(("gst-plugins-base" ,gst-plugins-base)))
    (native-inputs
     `(("glib:bin" ,glib "bin") ; for glib-mkenums, etc.
       ("gobject-introspection" ,gobject-introspection)
       ;; TODO: Enable documentation for 1.18.
       ;;("gtk-doc" ,gtk-doc)
       ("pkg-config" ,pkg-config)
       ("python" ,python)))
    (inputs
     ;; XXX: The following dependencies are missing:
     ;;  vo-amrwbenc, vo-aacenc, bs2b, chromaprint, directfb, daala, libdts,
     ;;  faac, flite, libgsm, libde265, libmms, libmimic, mjpegtools,
     ;;  mpeg2enc, libofa, opencv, openh264, openni2, libtimemmgr, wildmidi,
     ;;  openspc, gme, sbc, schroedinger, zbar, librtmp, spandsp
     `(("bluez" ,bluez)
       ("curl" ,curl)
       ("faad2" ,faad2)
       ("fluidsynth" ,fluidsynth)
       ("gtk+" ,gtk+)
       ("ladspa" ,ladspa)
       ("libass" ,libass)
       ("libdvdnav" ,libdvdnav)
       ("libdvdread" ,libdvdread)
       ("libgcrypt" ,libgcrypt)
       ("libgudev" ,libgudev)
       ("libkate" ,libkate)
       ("libmodplug" ,libmodplug)
       ("librsvg" ,librsvg)
       ("libsndfile" ,libsndfile)
       ("libsrtp" ,libsrtp)
       ("libssh2" ,libssh2)
       ("libusb" ,libusb)
       ("libvdpau" ,libvdpau)
       ("libwebp" ,libwebp)
       ("libxml2" ,libxml2)
       ("lrdf" ,lrdf)
       ("mesa" ,mesa)
       ("neon" ,neon)
       ("openal" ,openal)
       ("openexr" ,openexr)
       ("openjpeg" ,openjpeg)
       ("openssl" ,openssl)
       ("opus" ,opus)
       ("orc" ,orc)
       ;("qtbase" ,qtbase)
       ;("qtdeclarative" ,qtdeclarative)
       ;("qtx11extras" ,qtx11extras)
       ("soundtouch" ,soundtouch)
       ("x265" ,x265)
       ("wayland" ,wayland)))
    (home-page "https://gstreamer.freedesktop.org/")
    (synopsis "Plugins for the GStreamer multimedia library")
    (description
     "GStreamer Bad Plug-ins is a set of plug-ins whose quality aren't up to
par compared to the rest.")
    (license license:lgpl2.0+)))

(define-public gst-plugins-ugly
  (package
    (name "gst-plugins-ugly")
    (version "1.16.2")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "https://gstreamer.freedesktop.org/src/"
                           name "/" name "-" version ".tar.xz"))
       (sha256
        (base32
         "1jpvc32x6q01zjkfgh6gmq6aaikiyfwwnhj7bmvn52syhrdl202m"))))
    (build-system meson-build-system)
    (inputs
     `(("gst-plugins-base" ,gst-plugins-base)
       ("liba52" ,liba52)
       ("libcdio" ,libcdio)
       ("libmpeg2" ,libmpeg2)
       ("libdvdread" ,libdvdread)
       ("libx264" ,libx264)
       ;; TODO:
       ;; * opencore-amr (for the AMR-NB decoder and encoder and the
       ;;   AMR-WB decoder) <http://sourceforge.net/projects/opencore-amr/>
       ("orc" ,orc)))
    (native-inputs
     `(("glib:bin" ,glib "bin")
       ("pkg-config" ,pkg-config)
       ("python-wrapper" ,python-wrapper)))
    (home-page "https://gstreamer.freedesktop.org/")
    (synopsis "GStreamer plugins from the \"ugly\" set")
    (description "GStreamer Ugly Plug-ins.  This set contains those plug-ins
which the developers consider to have good quality code but that might pose
distribution problems in some jurisdictions, e.g. due to patent threats.")
    (license license:lgpl2.0+)))

(define-public gst-libav
  (package
    (name "gst-libav")
    (version "1.16.2")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "https://gstreamer.freedesktop.org/src/" name "/"
                    name "-" version ".tar.xz"))
              (sha256
               (base32
                "1wpfilc98bad9nsv3y1qapxp35dvn2mvwvrmqwrsj58cf09gc967"))
              (modules '((guix build utils)))
              (snippet
               '(begin
                  ;; Drop bundled ffmpeg.
                  (delete-file-recursively "gst-libs/ext/libav")
                  #t))))
    (build-system meson-build-system)
    (native-inputs
     `(("pkg-config" ,pkg-config)
       ("python" ,python)))
    (inputs
     `(("gst-plugins-base" ,gst-plugins-base)
       ("ffmpeg" ,ffmpeg)
       ("orc" ,orc)
       ("zlib" ,zlib)))
    (home-page "https://gstreamer.freedesktop.org/")
    (synopsis "Plugins for the GStreamer multimedia library")
    (description
     "This GStreamer plugin supports a large number of audio and video
compression formats through the use of the libav library.")
    (license license:gpl2+)))

(define-public gst-editing-services
  (package
    (name "gst-editing-services")
    (version "1.16.2")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "https://gstreamer.freedesktop.org/src/" name "/"
                    "gstreamer-editing-services-" version ".tar.xz"))
              (sha256
               (base32
                "05hcf3prna8ajjnqd53221gj9syarrrjbgvjcbhicv0c38csc1hf"))))
    (build-system meson-build-system)
    (arguments
     ;; FIXME: 16/22 failing tests.
     `(#:tests? #f))
    (inputs
     `(("gst-plugins-base" ,gst-plugins-base)
       ("libxml2" ,libxml2)))
    (native-inputs
     `(("flex" ,flex)
       ("gst-plugins-bad" ,gst-plugins-bad)
       ("gst-plugins-good" ,gst-plugins-good)
       ("perl" ,perl)
       ("pkg-config" ,pkg-config)
       ("python" ,python)))
    (home-page "https://gstreamer.freedesktop.org/")
    (synopsis "GStreamer library for non-linear editors")
    (description
     "This is a high-level library for facilitating the creation of audio/video
non-linear editors.")
    (license license:gpl2+)))

(define-public python-gst
  (package
    (name "python-gst")
    (version "1.16.2")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "https://gstreamer.freedesktop.org/src/gst-python/"
                    "gst-python-" version ".tar.xz"))
              (sha256
               (base32
                "1a48ca66izmm8hnp608jv5isg3jxb0vlfmhns0bg9nbkilag7390"))
              (patches
               (search-patches "python-gst-fix-build-with-python-3.8.patch"))))
    (build-system meson-build-system)
    (arguments
     `(#:modules ((guix build meson-build-system)
                  (guix build utils)
                  ((guix build python-build-system) #:prefix python:))
       #:imported-modules (,@%meson-build-system-modules
                           (guix build python-build-system))
       #:configure-flags
       (list (string-append
              "-Dpygi-overrides-dir="
              (python:site-packages %build-inputs %outputs) "gi/overrides"))))
    (native-inputs
     `(("pkg-config" ,pkg-config)
       ("python" ,python)))
    (propagated-inputs
     `(("gst-plugins-base" ,gst-plugins-base)
       ("python-pygobject" ,python-pygobject)))
    (home-page "https://gstreamer.freedesktop.org/")
    (synopsis "GStreamer GObject Introspection overrides for Python")
    (description
     "This package contains GObject Introspection overrides for Python that can
be used by Python applications using GStreamer.")
    (license license:lgpl2.1+)
    (properties `((python2-variant . ,(delay python2-gst))))))

(define-public python2-gst
  (package (inherit python-gst)
    (name "python2-gst")
    (native-inputs
     `(("pkg-config" ,pkg-config)
       ("python" ,python-2)))
    (propagated-inputs
     `(("gst-plugins-base" ,gst-plugins-base)
       ("python-pygobject" ,python2-pygobject)))))

(define-public gst123
  (package
    (name "gst123")
    (version "0.3.5")
    (source (origin
              (method url-fetch)
              (uri (string-append "http://space.twc.de/~stefan/gst123/gst123-"
                                  version ".tar.bz2"))
              (sha256
               (base32
                "0zaa117n4wkya9p903vkj8hj58lmdb66pxsdx5wwcv7nffbp5d67"))))
    (build-system gnu-build-system)
    (inputs
     `(("gtk+" ,gtk+-2)
       ("ncurses" ,ncurses)
       ("gstreamer" ,gstreamer)
       ("gst-plugins-base" ,gst-plugins-base)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "http://space.twc.de/~stefan/gst123.php")
    (synopsis "Flexible command line media player based on gstreamer")
    (description "The program gst123 is designed to be a more flexible command
line player in the spirit of ogg123 and mpg123, based on the gstreamer media
framework.  It plays all file formats gstreamer supports, so if you have a
music collection which contains different file formats, like flac, ogg and
mp3, you can use gst123 to play all your music files.")
    (license license:lgpl2.0+)))