ptr.pet
1{ pkgs, ... }:
2let
3 rate = 48000;
4 quant = 512;
5 quantRateMax = "${toString quant}/${toString rate}";
6 quantRateMin = "${toString (quant / 2)}/${toString rate}";
7in
8{
9 imports = [ ../../../modules/audio/desktop-audio.nix ];
10
11 environment.systemPackages = with pkgs; [
12 helvum
13 pwvucontrol
14 ];
15
16 security.rtkit.enable = true;
17 services.pipewire = {
18 enable = true;
19 audio.enable = true;
20 alsa.enable = true;
21 alsa.support32Bit = true;
22 pulse.enable = true;
23 jack.enable = true;
24 };
25
26 services.pipewire.extraConfig.pipewire."92-low-latency" = {
27 "context.properties" = {
28 "default.clock.rate" = rate;
29 "default.clock.quantum" = quant;
30 "default.clock.min-quantum" = quant / 2;
31 "default.clock.max-quantum" = quant;
32 };
33 };
34
35 services.pipewire.extraConfig.pipewire-pulse."92-low-latency" = {
36 context.modules = [
37 {
38 name = "libpipewire-module-protocol-pulse";
39 args = {
40 pulse.min.req = quantRateMin;
41 pulse.default.req = quantRateMax;
42 pulse.max.req = quantRateMax;
43 pulse.min.quantum = quantRateMin;
44 pulse.max.quantum = quantRateMax;
45 };
46 }
47 ];
48 stream.properties = {
49 node.latency = quantRateMax;
50 resample.quality = 1;
51 };
52 };
53}