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{
flake.nixosModules.audio = { config, lib, pkgs, ... }:
let
cfg = config.os.core.audio;
in
{
options.os.core.audio = {
enable = lib.mkEnableOption "audio support";
disable-devices.enable = lib.mkEnableOption "disables some random devices cluttering up";
noise-cancellation.enable = lib.mkEnableOption "RNNoise background noise cancellation";
};
config = lib.mkMerge [
(lib.mkIf cfg.enable {
services.pulseaudio.enable = false;
security.rtkit.enable = true;
services.pipewire = {
enable = true;
audio.enable = true;
pulse.enable = true;
alsa = {
enable = true;
support32Bit = true;
};
jack.enable = true;
wireplumber = {
enable = true;
extraConfig."99-lock-microphone-gain"."pulse.rules" = [{
matches = [ { "application.name" = "~*cord*"; } ];
actions.quirks = [ "no-source-volume" ];
}];
};
};
services.playerctld.enable = true;
environment.systemPackages = with pkgs; [
crosspipe
pulsemixer
pavucontrol
alsa-utils
];
})
(lib.mkIf cfg.disable-devices.enable {
services.pipewire.wireplumber.extraConfig = {
"99-disable-devices"."monitor.alsa.rules" = [{
matches = [
{ "device.name" = "~alsa_card.pci-0000_03_00.1*"; }
{ "device.description" = "~USB Audio*"; }
];
actions.update-props."device.disabled" = true;
}];
};
})
(lib.mkIf cfg.noise-cancellation.enable {
services.pipewire.extraConfig.pipewire."99-rnnoise" = {
"context.modules" = [
{
name = "libpipewire-module-filter-chain";
args = {
"node.description" = "Noise Canceling Source";
"media.name" = "Noise Canceling Source";
"filter.graph".nodes = [
{
type = "ladspa";
name = "rnnoise";
plugin = "${pkgs.rnnoise-plugin}/lib/ladspa/librnnoise_ladspa.so";
label = "noise_suppressor_mono";
control = {
"VAD Threshold (%)" = 50.0;
"VAD Grace Period (ms)" = 200.0;
"Retroactive VAD Grace Period (ms)" = 0.0;
};
}
];
"capture.props" = {
"node.name" = "effect_input.rnnoise";
"node.passive" = true;
"audio.position" = [ "MONO" ];
};
"playback.props" = {
"node.name" = "effect_output.rnnoise";
"media.class" = "Audio/Source";
"audio.position" = [ "MONO" ];
};
};
}
];
};
})
];
};
}
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