misc: initial commit

nixos/audio/pipewire-low-latency.nix

@@ -0,0 +1,37 @@
+{config, ...}: {
+  assertions = [
+    {
+      assertion = config.services.pipewire.enable;
+      message = "PipeWire must be enabled for low-latency PipeWire";
+    }
+  ];
+
+  services.pipewire.extraConfig = {
+    pipewire."92-low-latency" = {
+      context.properties = {
+        default.clock.rate = 48000;
+        default.clock.quantum = 32;
+        default.clock.min-quantum = 32;
+        default.clock.max-quantum = 32;
+      };
+    };
+    pipewire-pulse."92-low-latency" = {
+      context.modules = [
+        {
+          name = "libpipewire-module-protocol-pulse";
+          args = {
+            pulse.min.req = "32/48000";
+            pulse.default.req = "32/48000";
+            pulse.max.req = "32/48000";
+            pulse.min.quantum = "32/48000";
+            pulse.max.quantum = "32/48000";
+          };
+        }
+      ];
+      stream.properties = {
+        node.latency = "32/48000";
+        resample.quality = 1;
+      };
+    };
+  };
+}