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add low latency pipewire options

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This commit is contained in:
notgne2 2022-05-15 04:52:02 -07:00
parent 4b500953fd
commit b68cd0541f
Signed by: notgne2
GPG Key ID: 5CE0A245A2DAC84A
3 changed files with 193 additions and 48 deletions
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1
common.nix
View File

@ -100,6 +100,7 @@
# Use a firewall
networking.firewall.enable = lib.mkDefault true;
networking.firewall.allowPing = true;
networking.firewall.allowedTCPPorts = lib.mkDefault [ 22 ];
programs.fish.enable = lib.mkDefault true;

152
modules/ezpw.nix
View File

@ -5,12 +5,44 @@ let
in
{
options.services.ezpw = {
enable =
mkEnableOption
"Enable pipewire";
enable = mkEnableOption "Enable pipewire";
lowLatency = mkOption {
type = types.bool;
description = "Enable low latency configuration";
default = true;
};
config = mkIf cfg.enable {
usbSoundcard = mkOption {
type = types.bool;
description = "Doubles the audio rate for alsa outputs in low latency mode";
default = false;
};
periodSize = mkOption {
type = types.int;
description = "Pipewire period size in low latency mode (\"tweak by trial-and-error\")";
default = 32;
};
rate = mkOption {
type = types.int;
description = "Pipewire rate in low latency mode";
default = 48000;
};
quantum = mkOption {
type = types.int;
description = "Pipewire quantum in low latency mode";
default = 64;
};
};
config =
let
qr = "${toString cfg.quantum}/${toString cfg.rate}";
in
mkIf cfg.enable {
hardware.pulseaudio.enable = lib.mkDefault false;
sound.enable = lib.mkDefault false;
@ -24,6 +56,95 @@ in
media-session.enable = lib.mkDefault false;
wireplumber.enable = lib.mkDefault true;
config = mkIf cfg.lowLatency {
pipewire = {
"context.properties" = {
"default.clock.rate" = cfg.rate;
"default.clock.quantum" = cfg.quantum;
"default.clock.min-quantum" = cfg.quantum;
};
"context.modules" = [
{
name = "libpipewire-module-rtkit";
args = {
"nice.level" = -11;
"rt.prio" = 88;
"rt.time.soft" = 200000;
"rt.time.hard" = 200000;
};
flags = [ "ifexists" "nofail" ];
}
{ name = "libpipewire-module-protocol-native"; }
{ name = "libpipewire-module-profiler"; }
{ name = "libpipewire-module-metadata"; }
{ name = "libpipewire-module-spa-device-factory"; }
{ name = "libpipewire-module-spa-node-factory"; }
{ name = "libpipewire-module-client-node"; }
{ name = "libpipewire-module-client-device"; }
{
name = "libpipewire-module-portal";
flags = [ "ifexists" "nofail" ];
}
{
name = "libpipewire-module-access";
args = { };
}
{ name = "libpipewire-module-adapter"; }
{ name = "libpipewire-module-link-factory"; }
{ name = "libpipewire-module-session-manager"; }
];
};
pipewire-pulse = {
"context.modules" = [
{
name = "libpipewire-module-rtkit";
args = {
"nice.level" = -11;
"rt.prio" = 88;
"rt.time.soft" = 200000;
"rt.time.hard" = 200000;
};
flags = [ "ifexists" "nofail" ];
}
{ name = "libpipewire-module-protocol-native"; }
{ name = "libpipewire-module-client-node"; }
{ name = "libpipewire-module-adapter"; }
{ name = "libpipewire-module-metadata"; }
{
name = "libpipewire-module-protocol-pulse";
args = {
"pulse.min.req" = qr;
"pulse.default.req" = qr;
"pulse.min.quantum" = qr;
"server.address" = [ "unix:native" ];
};
}
];
"stream.properties" = {
"node.latency" = qr;
"resample.quality" = 1;
};
};
};
media-session.config.alsa-monitor = mkIf cfg.lowLatency {
rules = [
{
matches = [{ node.name = "alsa_output.*"; }];
actions = {
update-props = {
"audio.format" = "S32LE";
"audio.rate" = cfg.rate * (if cfg.usbSoundcard then 2 else 1);
"api.alsa.period-size" = cfg.periodSize;
};
};
}
];
};
media-session.config.bluez-monitor = {
properties = {
"bluez5.codecs" = [ "sbc" "aac" "ldac" "aptx" "aptx_hd" ];
@ -52,6 +173,29 @@ in
};
};
environment.systemPackages = with pkgs; [
# pactl is required for pipewire-pulse
pulseaudio
];
environment.etc."wireplumber/main.lua.d/51-alsa-config.lua".text = mkIf cfg.lowLatency ''
alsa_monitor.properties = {
["audio.rate"] = ${toString (cfg.rate * (if cfg.usbSoundcard then 2 else 1))},
["audio.format"] = "S32LE",
["api.alsa.headroom"] = 512,
["api.alsa.period-size"] = ${toString cfg.periodSize}
}
'';
environment.etc."wireplumber/bluetooth.lua.d/51-bluez-config.lua".text = ''
bluez_monitor.properties = {
["bluez5.enable-sbc-xq"] = true,
["bluez5.enable-msbc"] = true,
["bluez5.enable-hw-volume"] = true,
["bluez5.headset-roles"] = "[ hsp_hs hsp_ag hfp_hf hfp_ag ]"
}
'';
xdg.portal.enable = lib.mkDefault true;
xdg.portal.gtkUsePortal = lib.mkDefault true;
xdg.portal.extraPortals = lib.mkDefault (with pkgs; [ xdg-desktop-portal-wlr xdg-desktop-portal-gtk ]);

2
modules/workstation.nix
View File

@ -150,7 +150,7 @@ in
domain = "@users";
type = "-";
item = "nice";
value = "-10";
value = "-15";
}
];