PipeWire: Difference between revisions

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@@ Line 146: / Line 146: @@
    config.pipewire = {
      "context.properties" = {
-       "default.clock.min-quantum" = 32; # default; going lower may cause crackles and distorted audio
+      "link.max-buffers" = 16;
+      "log.level" = 2;
+      "default.clock.rate" = 48000;
+      "default.clock.quantum" = 32;
+       "default.clock.min-quantum" = 32;
+      "default.clock.max-quantum" = 32;
+      "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"; }
+    ];
    };
 };
@@ Line 159: / Line 196: @@
 services.pipewire = {
    config.pipewire-pulse = {
+    "context.properties" = {
+      "log.level" = 2;
+    };
      "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.quantum" = 32; # controls minimum playback quant
+           "pulse.min.req" = "32/48000";
-           "pulse.min.req" = 32; # controls minimum recording quant
+          "pulse.default.req" = "32/48000";
-           "pulse.min.frag" = 32; # controls minimum fragment size
+           "pulse.max.req" = "32/48000";
-           "server.address" = [ "unix:native" ]; # the default address of the server
+           "pulse.min.quantum" = "32/48000";
+          "pulse.max.quantum" = "32/48000";
+           "server.address" = [ "unix:native" ];
          };
        }
      ];
+    "stream.properties" = {
+      "node.latency" = "32/48000";
+      "resample.quality" = 1;
+    };
    };
 };
@@ Line 184: / Line 244: @@
          actions = {
            update-props = {
-             "audio.format" = "S16LE";
+             "audio.format" = "S32LE";
-             "audio.rate" = 48000;
+             "audio.rate" = 96000; # for USB soundcards it should be twice your desired rate
-             "api.alsa.period-size" = 160; # defaults to 1024, tweak by trial-and-error
+             "api.alsa.period-size" = 32; # defaults to 1024, tweak by trial-and-error
              #"api.alsa.disable-batch" = true; # generally, USB soundcards use the batch mode
            };