[Desktop/Multimedia+Pipewire] automatically add Apple AirPlay audio sinks

desktop/general.nix

@@ -36,6 +36,7 @@ in {
         default = true;
         example = false;
       };
+      airplay.enable = (mkEnableOption "AirPlay sink device support") // { default = true; };
     };
     graphics = {
       shaderCache = {

desktop/multimedia.nix

@@ -8,6 +8,8 @@ let
     noiseFilterStrength = cfg.audio.noise-filter.strength;
   };
 
+  airplayConfig = pkgs.callPackage ./pipewire/pipewire-airplay.conf.nix {};
+
   # Multimedia Packages
 
   myFFmpeg = let
@@ -112,6 +114,9 @@ in {
           enable = cfg.audio.noise-filter.strength > 0.0;
         }
       );
+      pipewire-airplay-sink = mkIf cfg.audio.airplay.enable (
+        mkPipewireModule { conf = airplayConfig; description = "Pipewire Airplay Sink"; }
+      );
     };
 
   };

desktop/pipewire/pipewire-airplay.conf.nix

@@ -0,0 +1,63 @@
+{ lib
+, writeText
+}:
+
+writeText "pipewire-airplay.conf"  ''
+# Noise canceling source
+#
+# start with pipewire -c filter-chain/source-rnnoise.conf
+#
+context.properties = {
+    log.level        = 3
+}
+
+#context.spa-libs = {
+#    audio.convert.* = audioconvert/libspa-audioconvert
+#    support.*       = support/libspa-support
+#}
+
+context.modules = [
+    {   name = libpipewire-module-rtkit
+        args = {
+            nice.level   = -11
+        }
+        flags = [ ifexists nofail ]
+    }
+    {   name = libpipewire-module-protocol-native }
+    {   name = libpipewire-module-client-node }
+    {   name = libpipewire-module-adapter }
+
+    {   name = libpipewire-raop-discover
+        args = {
+            #raop.latency.ms = 1000
+            stream.rules = [
+                {   matches = [
+                        {    raop.ip = "~.*"
+                             #raop.port = 1000
+                             #raop.name = ""
+                             #raop.hostname = ""
+                             #raop.domain = ""
+                             #raop.device = ""
+                             #raop.transport = "udp" | "tcp"
+                             #raop.encryption.type = "RSA" | "auth_setup" | "none"
+                             #raop.audio.codec = "PCM" | "ALAC" | "AAC" | "AAC-ELD"
+                             #audio.channels = 2
+                             #audio.format = "S16" | "S24" | "S32"
+                             #audio.rate = 44100
+                             #device.model = ""
+                        }
+                    ]
+                    actions = {
+                        create-stream = {
+                            #raop.password = ""
+                            stream.props = {
+                                #target.object = ""
+                                media.class = "Audio/Sink"
+                            }
+                        }
+                    }
+                }
+            ] # stream.rules
+        } # args
+    }
+}]''