feat: prewarming dylib

MPVKit/Sources/DesktopMPVBridge/Bridge.swift

@@ -27,6 +27,11 @@ public func nuvio_player_create() -> UnsafeMutableRawPointer {
     return Unmanaged.passRetained(p).toOpaque()
 }
 
+@_cdecl("nuvio_player_prewarm")
+public func nuvio_player_prewarm() {
+    NuvioPlayerPrewarmer.shared.prewarm()
+}
+
 @_cdecl("nuvio_player_destroy")
 public func nuvio_player_destroy(_ ptr: UnsafeMutableRawPointer) {
     let p = Unmanaged<NuvioPlayerWindow>.fromOpaque(ptr).takeRetainedValue()

MPVKit/Sources/DesktopMPVBridge/NuvioPlayerPrewarmer.swift

@@ -0,0 +1,20 @@
+import AppKit
+
+final class NuvioPlayerPrewarmer {
+    static let shared = NuvioPlayerPrewarmer()
+
+    private var started = false
+
+    private init() {
+    }
+
+    func prewarm() {
+        DispatchQueue.main.async {
+            guard !self.started else { return }
+            self.started = true
+            let view = NuvioMPVView(frame: NSRect(x: 0, y: 0, width: 16, height: 16))
+            view.setup()
+            view.destroyPlayer()
+        }
+    }
+}

composeApp/src/desktopMain/kotlin/com/nuvio/app/DesktopApp.kt

@@ -1,8 +1,10 @@
 package com.nuvio.app
 
 import androidx.compose.runtime.DisposableEffect
+import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.ui.window.Window
 import androidx.compose.ui.window.application
+import com.nuvio.app.features.player.prewarmDesktopPlaybackBackend
 import java.awt.Color as AwtColor
 
 private val DesktopWindowBackground = AwtColor(0x0D, 0x0D, 0x0D)
@@ -27,7 +29,11 @@ fun main() {
                 onDispose { }
             }
 
+            LaunchedEffect(Unit) {
+                prewarmDesktopPlaybackBackend()
+            }
+
             App()
         }
     }
-}
+}

composeApp/src/desktopMain/kotlin/com/nuvio/app/features/player/DesktopPlaybackPrewarmer.desktop.kt

@@ -0,0 +1,24 @@
+package com.nuvio.app.features.player
+
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.withContext
+import java.util.concurrent.atomic.AtomicBoolean
+
+private val desktopPlaybackPrewarmStarted = AtomicBoolean(false)
+
+internal suspend fun prewarmDesktopPlaybackBackend() {
+    val osName = System.getProperty("os.name").orEmpty().lowercase()
+    if (!osName.contains("mac")) return
+    if (!desktopPlaybackPrewarmStarted.compareAndSet(false, true)) return
+
+    val bridge = withContext(Dispatchers.IO) {
+        runCatching { MacOSMPVBridgeLib.INSTANCE }.getOrNull()
+    } ?: return
+
+    delay(1_500)
+
+    withContext(Dispatchers.IO) {
+        runCatching { bridge.nuvio_player_prewarm() }
+    }
+}

composeApp/src/desktopMain/kotlin/com/nuvio/app/features/player/MacOSNativePlayerBridge.desktop.kt

@@ -37,6 +37,7 @@ internal interface MacOSMPVBridgeLib : Library {
     }
 
     fun nuvio_player_create(): Pointer
+    fun nuvio_player_prewarm()
     fun nuvio_player_destroy(player: Pointer)
     fun nuvio_player_show(player: Pointer)