nix-conf/modules/audio/default.nix

{ config, lib, pkgs, ... }:

let cfg = config.jopejoe1.audio;
in {
  options.jopejoe1.audio = {
    enable = lib.mkEnableOption "Enable Audio";
    sennheiser-hd-660s = lib.mkEnableOption "Equalizer for Sennheiser HD 660S";
  };

  config = lib.mkIf cfg.enable {
    security.rtkit.enable = true;

    services.pipewire = {
      enable = true;
      systemWide = false;
      alsa = {
        enable = true;
        support32Bit = true;
      };
      pulse.enable = true;
      jack.enable = true;

      wireplumber.enable = true;

      extraConfig.pipewire."30-noise-filter" = {
        "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)" = 0;
                  "Retroactive VAD Grace (ms)" = 50;
                };
              }];
            };
            "capture.props" = {
              "node.name" = "capture.rnnoise_source";
              "node.passive" = true;
              "audio.rate" = 48000;
            };
            "playback.props" = {
              "node.name" = "rnnoise_source";
              "media.class" = "Audio/Source";
              "audio.rate" = 48000;
            };
          };
        }];
      };
    };
  };

  imports = [ ./sennheiser-hd660s.nix ];
}