android/app/src/main/java/com/fabledsword/minstrel/player/output/ActiveUpnpHolder.kt

@@ -0,0 +1,29 @@
+package com.fabledsword.minstrel.player.output
+
+import com.fabledsword.minstrel.player.output.upnp.AVTransportClient
+import com.fabledsword.minstrel.player.output.upnp.RenderingControlClient
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import javax.inject.Inject
+import javax.inject.Singleton
+
+/**
+ * Shared singleton handle to the currently-active UPnP route's transport
+ * + rendering clients. Decouples [com.fabledsword.minstrel.player.MinstrelForwardingPlayer]
+ * from [OutputPickerController] -- the picker writes; the forwarding
+ * player reads. Null = no UPnP active (local ExoPlayer path).
+ */
+data class ActiveUpnp(
+    val routeId: String,
+    val routeName: String,
+    val avTransport: AVTransportClient,
+    val rendering: RenderingControlClient?,
+)
+
+@Singleton
+class ActiveUpnpHolder @Inject constructor() {
+    private val internal = MutableStateFlow<ActiveUpnp?>(null)
+    val active: StateFlow<ActiveUpnp?> = internal.asStateFlow()
+    fun set(active: ActiveUpnp?) { internal.value = active }
+}