From 4313ea9351318bdad026139a1b0d10b4c3f96d16 Mon Sep 17 00:00:00 2001
From: LavaDesu <me@lava.moe>
Date: Sat, 15 May 2021 19:23:43 +0700
Subject: [PATCH] pipewire

---
 cfg/winter/audio.nix | 107 +++++++++++++++++++++++++++++++++++++++++++
 cfg/winter/main.nix  |   4 +-
 2 files changed, 108 insertions(+), 3 deletions(-)
 create mode 100644 cfg/winter/audio.nix

diff --git a/cfg/winter/audio.nix b/cfg/winter/audio.nix
new file mode 100644
index 0000000..dadfab7
--- /dev/null
+++ b/cfg/winter/audio.nix
@@ -0,0 +1,107 @@
+{ config, ... }:
+let
+  int = {
+    quantum = {
+      min = 128;
+      def = 256;
+      max = 2048;
+    };
+    rate = 48000;
+  };
+  str = {
+    quantum = {
+      min = toString int.quantum.min;
+      def = toString int.quantum.def;
+      max = toString int.quantum.max;
+    };
+    rate = toString int.rate;
+  };
+in {
+  sound.enable = false;
+  security.rtkit.enable = true;
+  services.pipewire = {
+    enable = true;
+    alsa.enable = true;
+    alsa.support32Bit = true;
+    pulse.enable = true;
+    jack.enable = true;
+
+    config.pipewire = {
+      "context.properties" = {
+        "link.max-buffers" = 16;
+        "default.clock.rate" = int.rate;
+        "default.clock.quantum" = int.quantum.def;
+        "default.clock.min-quantum" = int.quantum.min;
+        "default.clock.max-quantum" = int.quantum.max;
+        "core.daemon" = true;
+        "core.name" = "pipewire-0";
+      };
+
+      "context.modules" = [
+        {
+          name = "libpipewire-module-rtkit";
+          args = {
+            "nice.level" = -15;
+            "rt.prio" = 88;
+            "rt.time.soft" = 200000;
+            "rt.time.hard" = 200000;
+          };
+          flags = [ "ifexists" "nofail" ];
+        }
+        { name = "libpipewire-module-protocol-native"; }
+        { name = "libpipewire-module-profiler"; }
+        { name = "libpipewire-module-metadata"; }
+        { name = "libpipewire-module-spa-device-factory"; }
+        { name = "libpipewire-module-spa-node-factory"; }
+        { name = "libpipewire-module-client-node"; }
+        { name = "libpipewire-module-client-device"; }
+        {
+          name = "libpipewire-module-portal";
+          flags = [ "ifexists" "nofail" ];
+        }
+        { name = "libpipewire-module-access"; args = {}; }
+        { name = "libpipewire-module-adapter"; }
+        { name = "libpipewire-module-link-factory"; }
+        { name = "libpipewire-module-session-manager"; }
+      ];
+      "stream.properties" = {
+        "node.latency" = "${str.quantum.min}/${str.rate}";
+        "resample.quality" = 1;
+      };
+    };
+    config.pipewire-pulse = {
+      "context.modules" = [
+        {
+          name = "libpipewire-module-rtkit";
+          args = {
+            "nice.level" = -15;
+            "rt.prio" = 88;
+            "rt.time.soft" = 200000;
+            "rt.time.hard" = 200000;
+          };
+          flags = [ "ifexists" "nofail" ];
+        }
+        { name = "libpipewire-module-protocol-native"; }
+        { name = "libpipewire-module-client-node"; }
+        { name = "libpipewire-module-adapter"; }
+        { name = "libpipewire-module-metadata"; }
+        {
+          name = "libpipewire-module-protocol-pulse";
+          args = {
+            "pulse.min.req" = "${str.quantum.min}/${str.rate}";
+            "pulse.default.req" = "${str.quantum.def}/${str.rate}";
+            "pulse.max.req" = "${str.quantum.max}/${str.rate}";
+            "pulse.min.quantum" = "${str.quantum.min}/${str.rate}";
+            "pulse.max.quantum" = "${str.quantum.max}/${str.rate}";
+            "server.address" = [ "unix:native" ];
+          };
+        }
+      ];
+      "stream.properties" = {
+        "node.latency" = "${str.quantum.min}/${str.rate}";
+        "resample.quality" = 1;
+      };
+    };
+  };
+}
+
diff --git a/cfg/winter/main.nix b/cfg/winter/main.nix
index d1bb863..66167dd 100644
--- a/cfg/winter/main.nix
+++ b/cfg/winter/main.nix
@@ -5,6 +5,7 @@
   environment.etc."machine-id".source = "/mnt/bcachefs/machine-id";
 
   imports = [
+    ./audio.nix
     ./gui.nix
     ./hardware-configuration.nix
     ./kernel.nix
@@ -31,9 +32,6 @@
   # time.timeZone = "";
   i18n.defaultLocale = "en_GB.UTF-8";
 
-  sound.enable = true;
-  hardware.pulseaudio.enable = true;
-
   users.mutableUsers = false;
   users.users.lava = {
     isNormalUser = true;