{ stdenv
, fetchurl
, meson
, ninja
, gettext
, config
, pkgconfig
, python3
, gst-plugins-base
, orc
, gobject-introspection
, enableZbar ? true
, faacSupport ? false
, faac ? null
, faad2
, libass
, libkate
, libmms
, librdf
, ladspaH
, libnice
, webrtc-audio-processing
, lilv
, lv2
, serd
, sord
, sratom
, libbs2b
, libmodplug
, mpeg2dec
, openjpeg
, libopus
, librsvg
, bluez
, chromaprint
, curl
, directfb
, fdk_aac
, flite
, gsm
, libaom
, libdc1394
, libde265
, libdrm
, libdvdnav
, libdvdread
, libgudev
, libofa
, libsndfile
, libusb1
, neon
, openal
, opencv4
, openexr
, openh264
, pango
, rtmpdump
, sbc
, soundtouch
, spandsp
, srtp
, zbar
, wayland-protocols
, wildmidi
, fluidsynth
, libvdpau
, wayland
, libwebp
, xvidcore
, gnutls
, mjpegtools
, libGLU_combined
, libintl
, libgme
, openssl
, x265
, libxml2
, srt
}:

assert faacSupport -> faac != null;

let
  inherit (stdenv.lib) optional optionals;
in stdenv.mkDerivation rec {
  pname = "gst-plugins-bad";
  version = "1.16.1";

  outputs = [ "out" "dev" ];

  src = fetchurl {
    url = "${meta.homepage}/src/${pname}/${pname}-${version}.tar.xz";
    sha256 = "1dddqacxgp77f3nl153x5a6139wdphc9phds2fpqb2cv6faiqj2n";
  };

  patches = [
    ./fix_pkgconfig_includedir.patch
  ];

  nativeBuildInputs = [
    meson
    ninja
    pkgconfig
    python3
    gettext
    gobject-introspection
  ] ++ optionals stdenv.isLinux [
    wayland-protocols
  ];

  buildInputs = [
    gst-plugins-base
    orc
    faad2
    libass
    libkate
    libmms
    libnice
    webrtc-audio-processing # webrtc
    libbs2b
    ladspaH
    librdf # ladspa plug-in
    lilv
    lv2
    serd
    sord
    sratom # lv2 plug-in
    libmodplug
    mpeg2dec
    openjpeg
    libopus
    librsvg
    bluez
    chromaprint
    curl.dev
    directfb
    fdk_aac
    flite
    gsm
    libaom
    libdc1394
    libde265
    libdrm
    libdvdnav
    libdvdread
    libgudev
    libofa
    libsndfile
    libusb1
    neon
    openal
    opencv4
    openexr
    openh264
    rtmpdump
    pango
    sbc
    soundtouch
    spandsp
    srtp
    fluidsynth
    libvdpau
    libwebp
    xvidcore
    gnutls
    libGLU_combined
    libgme
    openssl
    x265
    libxml2
    libintl
    srt
  ] ++ optionals enableZbar [
    zbar
  ] ++ optionals faacSupport [
    faac
  ] ++ optionals stdenv.isLinux [
    wayland
  ] ++ optionals (!stdenv.isDarwin) [
    # wildmidi requires apple's OpenAL
    # TODO: package apple's OpenAL, fix wildmidi, include on Darwin
    wildmidi
    # TODO: mjpegtools uint64_t is not compatible with guint64 on Darwin
    mjpegtools
  ];

  mesonFlags = [
    "-Dexamples=disabled" # requires many dependencies and probably not useful for our users

    "-Ddts=disabled" # required `libdca` library not packaged in nixpkgs as of writing, and marked as "BIG FAT WARNING: libdca is still in early development"
    "-Dzbar=${if enableZbar then "enabled" else "disabled"}"
    "-Dfaac=${if faacSupport then "enabled" else "disabled"}"
    "-Diqa=disabled" # required `dssim` library not packaging in nixpkgs as of writing
    "-Dmsdk=disabled" # not packaged in nixpkgs as of writing / no Windows support
    # As of writing, with `libmpcdec` in `buildInputs` we get
    #   "Could not find libmpcdec header files, but Musepack was enabled via options"
    # This is likely because nixpkgs has the header in libmpc/mpcdec.h
    # instead of mpc/mpcdec.h, like Arch does. The situation is not trivial.
    # There are apparently 2 things called `libmpcdec` from the same author:
    #   * http://svn.musepack.net/libmpcdec/trunk/src/
    #   * http://svn.musepack.net/libmpc/trunk/include/mpc/
    # Fixing it likely requires to first figure out with upstream which one
    # is needed, and then patching upstream to find it (though it probably
    # already works on Arch?).
    "-Dmusepack=disabled"
    "-Dopenmpt=disabled" # `libopenmpt` not packaged in nixpkgs as of writing
    "-Dopenni2=disabled" # not packaged in nixpkgs as of writing
    "-Dopensles=disabled" # not packaged in nixpkgs as of writing
    "-Dsctp=disabled" # required `usrsctp` library not packaged in nixpkgs as of writing
    "-Dteletext=disabled" # required `zvbi` library not packaged in nixpkgs as of writing
    "-Dtinyalsa=disabled" # not packaged in nixpkgs as of writing
    "-Dvoaacenc=disabled" # required `vo-aacenc` library not packaged in nixpkgs as of writing
    "-Dvoamrwbenc=disabled" # required `vo-amrwbenc` library not packaged in nixpkgs as of writing
    "-Dvulkan=disabled" # Linux-only, and we haven't figured out yet which of the vulkan nixpkgs it needs
    "-Dwasapi=disabled" # not packaged in nixpkgs as of writing / no Windows support
    "-Dwpe=disabled" # required `wpe-webkit` library not packaged in nixpkgs as of writing

    # Requires CUDA and we haven't figured out how to make Meson find CUDA yet;
    # it probably searches via pkgconfig, for which we have no .pc files,
    # see https://github.com/NixOS/nixpkgs/issues/54395
    "-Dnvdec=disabled"
    "-Dnvenc=disabled"
  ];

  doCheck = false; # fails 20 out of 58 tests, expensive

  meta = with stdenv.lib; {
    description = "GStreamer Bad Plugins";
    homepage = "https://gstreamer.freedesktop.org";
    longDescription = ''
      a set of plug-ins that aren't up to par compared to the
      rest.  They might be close to being good quality, but they're missing
      something - be it a good code review, some documentation, a set of tests,
      a real live maintainer, or some actual wide use.
    '';
    license = licenses.lgpl2Plus;
    platforms = platforms.linux ++ platforms.darwin;
    maintainers = with maintainers; [ matthewbauer ];
  };
}