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|
{ config, lib, pkgs, ... }:
with pkgs;
with lib;
let
cfg = config.hardware.pulseaudio;
hasZeroconf = let z = cfg.zeroconf; in z.publish.enable || z.discovery.enable;
overriddenPackage = cfg.package.override
(optionalAttrs hasZeroconf { zeroconfSupport = true; });
binary = "${getBin overriddenPackage}/bin/pulseaudio";
binaryNoDaemon = "${binary} --daemonize=no";
# Forces 32bit pulseaudio and alsa-plugins to be built/supported for apps
# using 32bit alsa on 64bit linux.
enable32BitAlsaPlugins = cfg.support32Bit && stdenv.isx86_64 && (pkgs.pkgsi686Linux.alsa-lib != null && pkgs.pkgsi686Linux.libpulseaudio != null);
myConfigFile =
let
addModuleIf = cond: mod: optionalString cond "load-module ${mod}";
allAnon = optional cfg.tcp.anonymousClients.allowAll "auth-anonymous=1";
ipAnon = let a = cfg.tcp.anonymousClients.allowedIpRanges;
in optional (a != []) ''auth-ip-acl=${concatStringsSep ";" a}'';
in writeTextFile {
name = "default.pa";
text = ''
.include ${cfg.configFile}
${addModuleIf cfg.zeroconf.publish.enable "module-zeroconf-publish"}
${addModuleIf cfg.zeroconf.discovery.enable "module-zeroconf-discover"}
${addModuleIf cfg.tcp.enable (concatStringsSep " "
([ "module-native-protocol-tcp" ] ++ allAnon ++ ipAnon))}
${addModuleIf config.services.jack.jackd.enable "module-jack-sink"}
${addModuleIf config.services.jack.jackd.enable "module-jack-source"}
${cfg.extraConfig}
'';
};
ids = config.ids;
uid = ids.uids.pulseaudio;
gid = ids.gids.pulseaudio;
stateDir = "/run/pulse";
# Create pulse/client.conf even if PulseAudio is disabled so
# that we can disable the autospawn feature in programs that
# are built with PulseAudio support (like KDE).
clientConf = writeText "client.conf" ''
autospawn=no
${cfg.extraClientConf}
'';
# Write an /etc/asound.conf that causes all ALSA applications to
# be re-routed to the PulseAudio server through ALSA's Pulse
# plugin.
alsaConf = ''
pcm_type.pulse {
libs.native = ${pkgs.alsa-plugins}/lib/alsa-lib/libasound_module_pcm_pulse.so ;
${lib.optionalString enable32BitAlsaPlugins
"libs.32Bit = ${pkgs.pkgsi686Linux.alsa-plugins}/lib/alsa-lib/libasound_module_pcm_pulse.so ;"}
}
pcm.!default {
type pulse
hint.description "Default Audio Device (via PulseAudio)"
}
ctl_type.pulse {
libs.native = ${pkgs.alsa-plugins}/lib/alsa-lib/libasound_module_ctl_pulse.so ;
${lib.optionalString enable32BitAlsaPlugins
"libs.32Bit = ${pkgs.pkgsi686Linux.alsa-plugins}/lib/alsa-lib/libasound_module_ctl_pulse.so ;"}
}
ctl.!default {
type pulse
}
'';
in {
options = {
hardware.pulseaudio = {
enable = mkOption {
type = types.bool;
default = false;
description = ''
Whether to enable the PulseAudio sound server.
'';
};
systemWide = mkOption {
type = types.bool;
default = false;
description = ''
If false, a PulseAudio server is launched automatically for
each user that tries to use the sound system. The server runs
with user privileges. If true, one system-wide PulseAudio
server is launched on boot, running as the user "pulse", and
only users in the "pulse-access" group will have access to the server.
Please read the PulseAudio documentation for more details.
Don't enable this option unless you know what you are doing.
'';
};
support32Bit = mkOption {
type = types.bool;
default = false;
description = ''
Whether to include the 32-bit pulseaudio libraries in the system or not.
This is only useful on 64-bit systems and currently limited to x86_64-linux.
'';
};
configFile = mkOption {
type = types.nullOr types.path;
description = ''
The path to the default configuration options the PulseAudio server
should use. By default, the "default.pa" configuration
from the PulseAudio distribution is used.
'';
};
extraConfig = mkOption {
type = types.lines;
default = "";
description = ''
Literal string to append to `configFile`
and the config file generated by the pulseaudio module.
'';
};
extraClientConf = mkOption {
type = types.lines;
default = "";
description = ''
Extra configuration appended to pulse/client.conf file.
'';
};
package = mkOption {
type = types.package;
default = if config.services.jack.jackd.enable
then pkgs.pulseaudioFull
else pkgs.pulseaudio;
defaultText = literalExpression "pkgs.pulseaudio";
example = literalExpression "pkgs.pulseaudioFull";
description = ''
The PulseAudio derivation to use. This can be used to enable
features (such as JACK support, Bluetooth) via the
`pulseaudioFull` package.
'';
};
extraModules = mkOption {
type = types.listOf types.package;
default = [];
example = literalExpression "[ pkgs.pulseaudio-modules-bt ]";
description = ''
Extra pulseaudio modules to use. This is intended for out-of-tree
pulseaudio modules like extra bluetooth codecs.
Extra modules take precedence over built-in pulseaudio modules.
'';
};
daemon = {
logLevel = mkOption {
type = types.str;
default = "notice";
description = ''
The log level that the system-wide pulseaudio daemon should use,
if activated.
'';
};
config = mkOption {
type = types.attrsOf types.unspecified;
default = {};
description = "Config of the pulse daemon. See `man pulse-daemon.conf`.";
example = literalExpression ''{ realtime-scheduling = "yes"; }'';
};
};
zeroconf = {
discovery.enable =
mkEnableOption "discovery of pulseaudio sinks in the local network";
publish.enable =
mkEnableOption "publishing the pulseaudio sink in the local network";
};
# TODO: enable by default?
tcp = {
enable = mkEnableOption "tcp streaming support";
anonymousClients = {
allowAll = mkEnableOption "all anonymous clients to stream to the server";
allowedIpRanges = mkOption {
type = types.listOf types.str;
default = [];
example = literalExpression ''[ "127.0.0.1" "192.168.1.0/24" ]'';
description = ''
A list of IP subnets that are allowed to stream to the server.
'';
};
};
};
};
};
config = lib.mkIf cfg.enable (mkMerge [
{
environment.etc."pulse/client.conf".source = clientConf;
environment.systemPackages = [ overriddenPackage ];
environment.etc = {
"alsa/conf.d/99-pulseaudio.conf".text = alsaConf;
"pulse/daemon.conf".source = writeText "daemon.conf"
(lib.generators.toKeyValue {} cfg.daemon.config);
"openal/alsoft.conf".source = writeText "alsoft.conf" "drivers=pulse";
"libao.conf".source = writeText "libao.conf" "default_driver=pulse";
};
hardware.pulseaudio.configFile = mkDefault "${getBin overriddenPackage}/etc/pulse/default.pa";
# Disable flat volumes to enable relative ones
hardware.pulseaudio.daemon.config.flat-volumes = mkDefault "no";
# Upstream defaults to speex-float-1 which results in audible artifacts
hardware.pulseaudio.daemon.config.resample-method = mkDefault "speex-float-5";
# Allow PulseAudio to get realtime priority using rtkit.
security.rtkit.enable = true;
systemd.packages = [ overriddenPackage ];
# PulseAudio is packaged with udev rules to handle various audio device quirks
services.udev.packages = [ overriddenPackage ];
}
(mkIf (cfg.extraModules != []) {
hardware.pulseaudio.daemon.config.dl-search-path = let
overriddenModules = builtins.map
(drv: drv.override { pulseaudio = overriddenPackage; })
cfg.extraModules;
modulePaths = builtins.map
(drv: "${drv}/lib/pulseaudio/modules")
# User-provided extra modules take precedence
(overriddenModules ++ [ overriddenPackage ]);
in lib.concatStringsSep ":" modulePaths;
})
(mkIf hasZeroconf {
services.avahi.enable = true;
})
(mkIf cfg.zeroconf.publish.enable {
services.avahi.publish.enable = true;
services.avahi.publish.userServices = true;
})
(mkIf (!cfg.systemWide) {
environment.etc = {
"pulse/default.pa".source = myConfigFile;
};
systemd.user = {
services.pulseaudio = {
restartIfChanged = true;
serviceConfig = {
RestartSec = "500ms";
PassEnvironment = "DISPLAY";
};
} // optionalAttrs config.services.jack.jackd.enable {
environment.JACK_PROMISCUOUS_SERVER = "jackaudio";
};
sockets.pulseaudio = {
wantedBy = [ "sockets.target" ];
};
};
})
(mkIf cfg.systemWide {
users.users.pulse = {
# For some reason, PulseAudio wants UID == GID.
uid = assert uid == gid; uid;
group = "pulse";
extraGroups = [ "audio" ];
description = "PulseAudio system service user";
home = stateDir;
homeMode = "755";
createHome = true;
isSystemUser = true;
};
users.groups.pulse.gid = gid;
users.groups.pulse-access = {};
systemd.services.pulseaudio = {
description = "PulseAudio System-Wide Server";
wantedBy = [ "sound.target" ];
before = [ "sound.target" ];
environment.PULSE_RUNTIME_PATH = stateDir;
serviceConfig = {
Type = "notify";
ExecStart = "${binaryNoDaemon} --log-level=${cfg.daemon.logLevel} --system -n --file=${myConfigFile}";
Restart = "on-failure";
RestartSec = "500ms";
};
};
environment.variables.PULSE_COOKIE = "${stateDir}/.config/pulse/cookie";
})
]);
}
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