From 0e14c32fef5ad57b7131f2356c9389ff548b7069 Mon Sep 17 00:00:00 2001
From: jopejoe1 <johannes@joens.email>
Date: Wed, 9 Aug 2023 23:06:03 +0200
Subject: [PATCH] Re add rnnoise

---
 modules/audio/default.nix | 37 ++++++++++++++++++++++++++++++++++++-
 1 file changed, 36 insertions(+), 1 deletion(-)

diff --git a/modules/audio/default.nix b/modules/audio/default.nix
index 7e8e95c..98e3120 100644
--- a/modules/audio/default.nix
+++ b/modules/audio/default.nix
@@ -17,6 +17,41 @@
 
   hardware.pulseaudio.enable = false;
 
-
+  environment.etc = let
+    json = pkgs.formats.json {};
+  in {
+    "pipewire/pipewire.conf.d/91-rnnoise.conf".source = json.generate "91-rnnoise.conf" {
+      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;
+                "Retroactive VAD Grace (ms)" = 0;
+              };
+            }];
+          };
+          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;
+          };
+        };
+      }];
+    };
+  };
 }