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266 lines
10 KiB
Nix
266 lines
10 KiB
Nix
# pipewire service.
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{ config, lib, pkgs, ... }:
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with lib;
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let
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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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# Helpers for generating the pipewire JSON config file
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mkSPAValueString = v:
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if builtins.isList v then "[${lib.concatMapStringsSep " " mkSPAValueString v}]"
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else if lib.types.attrs.check v then
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"{${lib.concatStringsSep " " (mkSPAKeyValue v)}}"
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else lib.generators.mkValueStringDefault { } v;
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mkSPAKeyValue = attrs: map (def: def.content) (
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lib.sortProperties
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(
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lib.mapAttrsToList
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(k: v: lib.mkOrder (v._priority or 1000) "${lib.escape [ "=" ] k} = ${mkSPAValueString (v._content or v)}")
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attrs
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)
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);
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toSPAJSON = attrs: lib.concatStringsSep "\n" (mkSPAKeyValue attrs);
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in {
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meta = {
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maintainers = teams.freedesktop.members;
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};
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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 = mkOption {
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type = types.package;
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default = pkgs.pipewire;
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defaultText = "pkgs.pipewire";
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example = literalExample "pkgs.pipewire";
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description = ''
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The pipewire derivation to use.
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'';
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};
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socketActivation = mkOption {
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default = true;
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type = types.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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config = mkOption {
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type = types.attrs;
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description = ''
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Configuration for the pipewire daemon.
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'';
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default = {
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properties = {
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## set-prop is used to configure properties in the system
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#
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# "library.name.system" = "support/libspa-support";
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# "context.data-loop.library.name.system" = "support/libspa-support";
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"link.max-buffers" = 64; # version < 3 clients can't handle more than 16
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"mem.allow-mlock" = true;
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"mem.mlock-all" = true;
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# https://gitlab.freedesktop.org/pipewire/pipewire/-/blob/master/src/pipewire/pipewire.h#L93
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"log.level" = 3; # 5 is trace, which is verbose as hell, default is 2 which is warnings, 4 is debug output, 3 is info
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## Properties for the DSP configuration
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#
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"default.clock.rate" = 48000; # 48000 is probably saner, 96000 has gaps in audio
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"default.clock.quantum" = 128; # equivalent to buffer size which is correlated to latency
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"default.clock.min-quantum" = 32; # No audio through bluetooth if 512 isn't allowed, 16 is the absolute minimum
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"default.clock.max-quantum" = 1024; # qemu seems to use 16384 but 8192 is the absolute maximum
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# "default.video.width" = 640;
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# "default.video.height" = 480;
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# "default.video.rate.num" = 25;
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# "default.video.rate.denom" = 1;
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};
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spa-libs = {
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## add-spa-lib <factory-name regex> <library-name>
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#
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# used to find spa factory names. It maps an spa factory name
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# regular expression to a library name that should contain
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# that factory.
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#
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"audio.convert*" = "audioconvert/libspa-audioconvert";
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"api.alsa.*" = "alsa/libspa-alsa";
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"api.v4l2.*" = "v4l2/libspa-v4l2";
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"api.libcamera.*" = "libcamera/libspa-libcamera";
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"api.bluez5.*" = "bluez5/libspa-bluez5";
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"api.vulkan.*" = "vulkan/libspa-vulkan";
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"api.jack.*" = "jack/libspa-jack";
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"support.*" = "support/libspa-support";
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# "videotestsrc" = "videotestsrc/libspa-videotestsrc";
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# "audiotestsrc" = "audiotestsrc/libspa-audiotestsrc";
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};
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modules = {
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## <module-name> = { [args = "<key>=<value> ..."]
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# [flags = ifexists] }
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# [flags = [ifexists]|[nofail]}
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#
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# Loads a module with the given parameters.
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# If ifexists is given, the module is ignoed when it is not found.
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# If nofail is given, module initialization failures are ignored.
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#
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libpipewire-module-rtkit = {
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args = {
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rt.prio = 20;
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rt.time.soft = 200000;
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rt.time.hard = 200000;
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nice.level = -11;
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};
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flags = "ifexists|nofail";
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};
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libpipewire-module-protocol-native = { _priority = -100; _content = "null"; };
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libpipewire-module-profiler = "null";
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libpipewire-module-metadata = "null";
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libpipewire-module-spa-device-factory = "null";
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libpipewire-module-spa-node-factory = "null";
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libpipewire-module-client-node = "null";
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libpipewire-module-client-device = "null";
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libpipewire-module-portal = "null";
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libpipewire-module-access = {
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args.access = {
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allowed = ["${builtins.unsafeDiscardStringContext cfg.sessionManagerExecutable}"];
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rejected = [];
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restricted = [];
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force = "flatpak";
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};
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};
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libpipewire-module-adapter = "null";
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libpipewire-module-link-factory = "null";
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libpipewire-module-session-manager = "null";
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};
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objects = {
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## create-object [-nofail] <factory-name> [<key>=<value> ...]
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#
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# Creates an object from a PipeWire factory with the given parameters.
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# If -nofail is given, errors are ignored (and no object is created)
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#
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};
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exec = {
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## exec <program-name>
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#
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# Execute the given program. This is usually used to start the
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# session manager. run the session manager with -h for options
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#
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"${builtins.unsafeDiscardStringContext cfg.sessionManagerExecutable}" = { args = "\"${lib.concatStringsSep " " cfg.sessionManagerArguments}\""; };
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};
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};
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};
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sessionManagerExecutable = mkOption {
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type = types.str;
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default = "";
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example = literalExample ''${pkgs.pipewire.mediaSession}/bin/pipewire-media-session'';
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description = ''
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Path to the session manager executable.
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'';
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};
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sessionManagerArguments = mkOption {
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type = types.listOf types.str;
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default = [];
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example = literalExample ''["-p" "bluez5.msbc-support=true"]'';
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description = ''
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Arguments passed to the pipewire session manager.
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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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pulse = {
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enable = mkEnableOption "PulseAudio server emulation";
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};
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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.pulse.enable -> !config.hardware.pulseaudio.enable;
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message = "PipeWire based PulseAudio server emulation replaces 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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environment.systemPackages = [ cfg.package ]
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++ lib.optional cfg.jack.enable jack-libs;
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systemd.packages = [ cfg.package ]
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++ lib.optional cfg.pulse.enable cfg.package.pulse;
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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.user.sockets.pipewire.wantedBy = lib.mkIf cfg.socketActivation [ "sockets.target" ];
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systemd.user.sockets.pipewire-pulse.wantedBy = lib.mkIf (cfg.socketActivation && cfg.pulse.enable) ["sockets.target"];
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systemd.user.services.pipewire.bindsTo = [ "dbus.service" ];
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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."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 = ${cfg.package.lib}/lib/alsa-lib/libasound_module_pcm_pipewire.so ;
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${optionalString enable32BitAlsaPlugins
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"libs.32Bit = ${pkgs.pkgsi686Linux.pipewire.lib}/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 = ${cfg.package.lib}/lib/alsa-lib/libasound_module_ctl_pipewire.so ;
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${optionalString enable32BitAlsaPlugins
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"libs.32Bit = ${pkgs.pkgsi686Linux.pipewire.lib}/lib/alsa-lib/libasound_module_ctl_pipewire.so ;"}
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}
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'';
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};
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environment.etc."alsa/conf.d/50-pipewire.conf" = mkIf cfg.alsa.enable {
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source = "${cfg.package}/share/alsa/alsa.conf.d/50-pipewire.conf";
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};
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environment.etc."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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environment.sessionVariables.LD_LIBRARY_PATH =
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lib.optional cfg.jack.enable "/run/current-system/sw/lib/pipewire";
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# https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/464#note_723554
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systemd.user.services.pipewire.environment = {
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"PIPEWIRE_LINK_PASSIVE" = "1";
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"PIPEWIRE_CONFIG_FILE" = pkgs.writeText "pipewire.conf" (toSPAJSON cfg.config);
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};
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};
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}
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