Refactor sound card config

2023-12-10 19:45:31 +00:00
parent 8380969c95
commit 0d015ac418
3 changed files with 47 additions and 34 deletions
--- a/hosts/odyssey/audio.nix
+++ b/hosts/odyssey/audio.nix
@ -0,0 +1,45 @@
+{ config, pkgs, ... }:
+let
+  snd-usb-audio-module = pkgs.callPackage ./snd-usb-audio.nix {
+    kernel = config.boot.kernelPackages.kernel;
+  };
+  upmixConfig = ''
+    stream.properties = {
+      channelmix.upmix = true
+      channelmix.upmix-method = psd
+    }
+  '';
+in {
+  boot.extraModulePackages = [
+    (snd-usb-audio-module.overrideAttrs (_: {
+      patches = [ ./0001-Update-device-ID-for-PreSonus-1824c.patch ];
+    }))
+  ];
+
+  environment.etc = {
+    "pipewire/pipewire.conf.d/surround.conf".text = ''
+      context.modules = [
+        {
+          name = libpipewire-module-loopback
+          args = {
+            node.description = "Genelec 4.1 Surround"
+            capture.props = {
+              node.name = "Genelec_Speakers"
+              media.class = "Audio/Sink"
+              audio.position = [ FL FR SL SR LFE ]
+            }
+            playback.props = {
+              node.name = "playback.Genelec_Speakers"
+              audio.position = [ AUX0 AUX1 AUX3 AUX4 AUX5 ]
+              target.object = "alsa_output.usb-PreSonus_Studio_1824c_SC4E21110775-00.multichannel-output"
+              stream.dont-remix = true
+              node.passive = true
+            }
+          }
+        }
+      ]
+    '';
+    "pipewire/pipewire-pulse.conf.d/40-upmix.conf".text = upmixConfig;
+    "pipewire/client-rt.conf.d/40-upmix.conf".text = upmixConfig;
+  };
+ }