430 lines
16 KiB
Nix
430 lines
16 KiB
Nix
# PipeWire service.
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{ config, lib, pkgs, ... }:
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let
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inherit (builtins) attrNames concatMap length;
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inherit (lib) maintainers teams;
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inherit (lib.attrsets) attrByPath attrsToList concatMapAttrs filterAttrs;
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inherit (lib.lists) flatten optional optionals;
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inherit (lib.modules) mkIf mkRemovedOptionModule;
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inherit (lib.options) literalExpression mkEnableOption mkOption mkPackageOption;
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inherit (lib.strings) concatMapStringsSep hasPrefix optionalString;
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inherit (lib.types) attrsOf bool listOf package;
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json = pkgs.formats.json {};
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mapToFiles = location: config: concatMapAttrs (name: value: { "share/pipewire/${location}.conf.d/${name}.conf" = json.generate "${name}" value; }) config;
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extraConfigPkgFromFiles = locations: filesSet: pkgs.runCommand "pipewire-extra-config" { } ''
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mkdir -p ${concatMapStringsSep " " (l: "$out/share/pipewire/${l}.conf.d") locations}
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${concatMapStringsSep ";" ({name, value}: "ln -s ${value} $out/${name}") (attrsToList filesSet)}
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'';
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cfg = config.services.pipewire;
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enable32BitAlsaPlugins = cfg.alsa.support32Bit
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&& pkgs.stdenv.isx86_64
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&& pkgs.pkgsi686Linux.pipewire != null;
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# The package doesn't output to $out/lib/pipewire directly so that the
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# overlays can use the outputs to replace the originals in FHS environments.
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#
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# This doesn't work in general because of missing development information.
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jack-libs = pkgs.runCommand "jack-libs" {} ''
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mkdir -p "$out/lib"
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ln -s "${cfg.package.jack}/lib" "$out/lib/pipewire"
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'';
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configPackages = cfg.configPackages;
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extraConfigPkg = extraConfigPkgFromFiles
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[ "pipewire" "client" "client-rt" "jack" "pipewire-pulse" ]
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(
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mapToFiles "pipewire" cfg.extraConfig.pipewire
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// mapToFiles "client" cfg.extraConfig.client
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// mapToFiles "client-rt" cfg.extraConfig.client-rt
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// mapToFiles "jack" cfg.extraConfig.jack
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// mapToFiles "pipewire-pulse" cfg.extraConfig.pipewire-pulse
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);
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configs = pkgs.buildEnv {
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name = "pipewire-configs";
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paths = configPackages
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++ [ extraConfigPkg ]
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++ optionals cfg.wireplumber.enable cfg.wireplumber.configPackages;
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pathsToLink = [ "/share/pipewire" ];
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};
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requiredLv2Packages = flatten
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(
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concatMap
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(p:
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attrByPath ["passthru" "requiredLv2Packages"] [] p
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)
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configPackages
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);
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lv2Plugins = pkgs.buildEnv {
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name = "pipewire-lv2-plugins";
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paths = cfg.extraLv2Packages ++ requiredLv2Packages;
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pathsToLink = [ "/lib/lv2" ];
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};
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in {
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meta.maintainers = teams.freedesktop.members ++ [ maintainers.k900 ];
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###### interface
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options = {
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services.pipewire = {
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enable = mkEnableOption "PipeWire service";
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package = mkPackageOption pkgs "pipewire" { };
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socketActivation = mkOption {
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default = true;
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type = bool;
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description = ''
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Automatically run PipeWire when connections are made to the PipeWire socket.
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'';
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};
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audio = {
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enable = mkOption {
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type = bool;
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# this is for backwards compatibility
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default = cfg.alsa.enable || cfg.jack.enable || cfg.pulse.enable;
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defaultText = literalExpression "config.services.pipewire.alsa.enable || config.services.pipewire.jack.enable || config.services.pipewire.pulse.enable";
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description = "Whether to use PipeWire as the primary sound server";
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};
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};
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alsa = {
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enable = mkEnableOption "ALSA support";
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support32Bit = mkEnableOption "32-bit ALSA support on 64-bit systems";
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};
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jack = {
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enable = mkEnableOption "JACK audio emulation";
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};
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raopOpenFirewall = mkOption {
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type = bool;
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default = false;
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description = ''
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Opens UDP/6001-6002, required by RAOP/Airplay for timing and control data.
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'';
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};
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pulse = {
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enable = mkEnableOption "PulseAudio server emulation";
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};
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systemWide = mkOption {
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type = bool;
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default = false;
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description = ''
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If true, a system-wide PipeWire service and socket is enabled
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allowing all users in the "pipewire" group to use it simultaneously.
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If false, then user units are used instead, restricting access to
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only one user.
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Enabling system-wide PipeWire is however not recommended and disabled
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by default according to
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https://github.com/PipeWire/pipewire/blob/master/NEWS
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'';
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};
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extraConfig = {
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pipewire = mkOption {
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type = attrsOf json.type;
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default = {};
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example = {
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"10-clock-rate" = {
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"context.properties" = {
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"default.clock.rate" = 44100;
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};
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};
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"11-no-upmixing" = {
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"stream.properties" = {
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"channelmix.upmix" = false;
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};
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};
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};
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description = ''
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Additional configuration for the PipeWire server.
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Every item in this attrset becomes a separate drop-in file in `/etc/pipewire/pipewire.conf.d`.
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See `man pipewire.conf` for details, and [the PipeWire wiki][wiki] for examples.
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See also:
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- [PipeWire wiki - virtual devices][wiki-virtual-device] for creating virtual devices or remapping channels
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- [PipeWire wiki - filter-chain][wiki-filter-chain] for creating more complex processing pipelines
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- [PipeWire wiki - network][wiki-network] for streaming audio over a network
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[wiki]: https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/Config-PipeWire
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[wiki-virtual-device]: https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/Virtual-Devices
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[wiki-filter-chain]: https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/Filter-Chain
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[wiki-network]: https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/Network
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'';
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};
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client = mkOption {
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type = attrsOf json.type;
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default = {};
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example = {
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"10-no-resample" = {
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"stream.properties" = {
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"resample.disable" = true;
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};
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};
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};
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description = ''
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Additional configuration for the PipeWire client library, used by most applications.
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Every item in this attrset becomes a separate drop-in file in `/etc/pipewire/client.conf.d`.
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See the [PipeWire wiki][wiki] for examples.
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[wiki]: https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/Config-client
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'';
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};
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client-rt = mkOption {
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type = attrsOf json.type;
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default = {};
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example = {
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"10-alsa-linear-volume" = {
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"alsa.properties" = {
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"alsa.volume-method" = "linear";
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};
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};
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};
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description = ''
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Additional configuration for the PipeWire client library, used by real-time applications and legacy ALSA clients.
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Every item in this attrset becomes a separate drop-in file in `/etc/pipewire/client-rt.conf.d`.
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See the [PipeWire wiki][wiki] for examples of general configuration, and [PipeWire wiki - ALSA][wiki-alsa] for ALSA clients.
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[wiki]: https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/Config-client
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[wiki-alsa]: https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/Config-ALSA
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'';
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};
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jack = mkOption {
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type = attrsOf json.type;
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default = {};
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example = {
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"20-hide-midi" = {
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"jack.properties" = {
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"jack.show-midi" = false;
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};
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};
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};
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description = ''
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Additional configuration for the PipeWire JACK server and client library.
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Every item in this attrset becomes a separate drop-in file in `/etc/pipewire/jack.conf.d`.
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See the [PipeWire wiki][wiki] for examples.
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[wiki]: https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/Config-JACK
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'';
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};
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pipewire-pulse = mkOption {
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type = attrsOf json.type;
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default = {};
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example = {
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"15-force-s16-info" = {
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"pulse.rules" = [{
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matches = [
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{ "application.process.binary" = "my-broken-app"; }
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];
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actions = {
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quirks = [ "force-s16-info" ];
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};
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}];
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};
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};
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description = ''
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Additional configuration for the PipeWire PulseAudio server.
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Every item in this attrset becomes a separate drop-in file in `/etc/pipewire/pipewire-pulse.conf.d`.
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See `man pipewire-pulse.conf` for details, and [the PipeWire wiki][wiki] for examples.
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See also:
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- [PipeWire wiki - PulseAudio tricks guide][wiki-tricks] for more examples.
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[wiki]: https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/Config-PulseAudio
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[wiki-tricks]: https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/Guide-PulseAudio-Tricks
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'';
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};
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};
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configPackages = mkOption {
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type = listOf package;
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default = [];
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example = literalExpression ''[
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(pkgs.writeTextDir "share/pipewire/pipewire.conf.d/10-loopback.conf" '''
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context.modules = [
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{ name = libpipewire-module-loopback
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args = {
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node.description = "Scarlett Focusrite Line 1"
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capture.props = {
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audio.position = [ FL ]
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stream.dont-remix = true
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node.target = "alsa_input.usb-Focusrite_Scarlett_Solo_USB_Y7ZD17C24495BC-00.analog-stereo"
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node.passive = true
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}
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playback.props = {
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node.name = "SF_mono_in_1"
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media.class = "Audio/Source"
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audio.position = [ MONO ]
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}
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}
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}
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]
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''')
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]'';
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description = ''
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List of packages that provide PipeWire configuration, in the form of
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`share/pipewire/*/*.conf` files.
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LV2 dependencies will be picked up from config packages automatically
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via `passthru.requiredLv2Packages`.
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'';
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};
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extraLv2Packages = mkOption {
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type = listOf package;
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default = [];
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example = literalExpression "[ pkgs.lsp-plugins ]";
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description = ''
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List of packages that provide LV2 plugins in `lib/lv2` that should
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be made available to PipeWire for [filter chains][wiki-filter-chain].
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Config packages have their required LV2 plugins added automatically,
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so they don't need to be specified here. Config packages need to set
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`passthru.requiredLv2Packages` for this to work.
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[wiki-filter-chain]: https://docs.pipewire.org/page_module_filter_chain.html
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'';
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};
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};
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};
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imports = [
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(mkRemovedOptionModule ["services" "pipewire" "config"] ''
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Overriding default PipeWire configuration through NixOS options never worked correctly and is no longer supported.
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Please create drop-in configuration files via `services.pipewire.extraConfig` instead.
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'')
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(mkRemovedOptionModule ["services" "pipewire" "media-session"] ''
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pipewire-media-session is no longer supported upstream and has been removed.
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Please switch to `services.pipewire.wireplumber` instead.
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'')
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];
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###### implementation
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config = mkIf cfg.enable {
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assertions = [
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{
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assertion = cfg.audio.enable -> !config.hardware.pulseaudio.enable;
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message = "Using PipeWire as the sound server conflicts with PulseAudio. This option requires `hardware.pulseaudio.enable` to be set to false";
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}
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{
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assertion = cfg.jack.enable -> !config.services.jack.jackd.enable;
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message = "PipeWire based JACK emulation doesn't use the JACK service. This option requires `services.jack.jackd.enable` to be set to false";
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}
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{
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# JACK intentionally not checked, as PW-on-JACK setups are a thing that some people may want
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assertion = (cfg.alsa.enable || cfg.pulse.enable) -> cfg.audio.enable;
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message = "Using PipeWire's ALSA/PulseAudio compatibility layers requires running PipeWire as the sound server. Set `services.pipewire.audio.enable` to true.";
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}
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{
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assertion = length
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(attrNames
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(
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filterAttrs
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(name: value:
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hasPrefix "pipewire/" name || name == "pipewire"
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)
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config.environment.etc
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)) == 1;
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message = "Using `environment.etc.\"pipewire<...>\"` directly is no longer supported in 24.05. Use `services.pipewire.extraConfig` or `services.pipewire.configPackages` instead.";
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}
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];
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environment.systemPackages = [ cfg.package ]
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++ optional cfg.jack.enable jack-libs;
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systemd.packages = [ cfg.package ];
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# PipeWire depends on DBUS but doesn't list it. Without this booting
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# into a terminal results in the service crashing with an error.
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systemd.services.pipewire.bindsTo = [ "dbus.service" ];
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systemd.user.services.pipewire.bindsTo = [ "dbus.service" ];
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# Enable either system or user units. Note that for pipewire-pulse there
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# are only user units, which work in both cases.
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systemd.sockets.pipewire.enable = cfg.systemWide;
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systemd.services.pipewire.enable = cfg.systemWide;
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systemd.user.sockets.pipewire.enable = !cfg.systemWide;
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systemd.user.services.pipewire.enable = !cfg.systemWide;
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systemd.services.pipewire.environment.LV2_PATH = mkIf cfg.systemWide "${lv2Plugins}/lib/lv2";
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systemd.user.services.pipewire.environment.LV2_PATH = mkIf (!cfg.systemWide) "${lv2Plugins}/lib/lv2";
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# Mask pw-pulse if it's not wanted
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systemd.user.services.pipewire-pulse.enable = cfg.pulse.enable;
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systemd.user.sockets.pipewire-pulse.enable = cfg.pulse.enable;
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systemd.sockets.pipewire.wantedBy = mkIf cfg.socketActivation [ "sockets.target" ];
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systemd.user.sockets.pipewire.wantedBy = mkIf cfg.socketActivation [ "sockets.target" ];
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systemd.user.sockets.pipewire-pulse.wantedBy = mkIf cfg.socketActivation [ "sockets.target" ];
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services.udev.packages = [ cfg.package ];
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# If any paths are updated here they must also be updated in the package test.
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environment.etc = {
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"alsa/conf.d/49-pipewire-modules.conf" = mkIf cfg.alsa.enable {
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text = ''
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pcm_type.pipewire {
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libs.native = ${cfg.package}/lib/alsa-lib/libasound_module_pcm_pipewire.so ;
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${optionalString enable32BitAlsaPlugins
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"libs.32Bit = ${pkgs.pkgsi686Linux.pipewire}/lib/alsa-lib/libasound_module_pcm_pipewire.so ;"}
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}
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ctl_type.pipewire {
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libs.native = ${cfg.package}/lib/alsa-lib/libasound_module_ctl_pipewire.so ;
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${optionalString enable32BitAlsaPlugins
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"libs.32Bit = ${pkgs.pkgsi686Linux.pipewire}/lib/alsa-lib/libasound_module_ctl_pipewire.so ;"}
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}
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'';
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};
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"alsa/conf.d/50-pipewire.conf" = mkIf cfg.alsa.enable {
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source = "${cfg.package}/share/alsa/alsa.conf.d/50-pipewire.conf";
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};
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"alsa/conf.d/99-pipewire-default.conf" = mkIf cfg.alsa.enable {
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source = "${cfg.package}/share/alsa/alsa.conf.d/99-pipewire-default.conf";
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};
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pipewire.source = "${configs}/share/pipewire";
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};
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environment.sessionVariables.LD_LIBRARY_PATH =
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mkIf cfg.jack.enable [ "${cfg.package.jack}/lib" ];
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networking.firewall.allowedUDPPorts = mkIf cfg.raopOpenFirewall [ 6001 6002 ];
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users = mkIf cfg.systemWide {
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users.pipewire = {
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uid = config.ids.uids.pipewire;
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group = "pipewire";
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extraGroups = [
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"audio"
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"video"
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] ++ optional config.security.rtkit.enable "rtkit";
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description = "PipeWire system service user";
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isSystemUser = true;
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home = "/var/lib/pipewire";
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createHome = true;
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};
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groups.pipewire.gid = config.ids.gids.pipewire;
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};
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};
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}
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