Fixes for MPV in macOS

macOS/AppleAVPlayerViewController.swift

@@ -0,0 +1,34 @@
+import AVKit
+import SwiftUI
+
+final class AppleAVPlayerViewController: NSViewController {
+    var playerModel: PlayerModel!
+    var playerView = AVPlayerView()
+    var pictureInPictureDelegate = PictureInPictureDelegate()
+
+    var aspectRatio: Double? {
+        let ratio = Double(playerView.videoBounds.width) / Double(playerView.videoBounds.height)
+
+        if !ratio.isFinite {
+            return VideoPlayerView.defaultAspectRatio
+        }
+
+        return [ratio, 1.0].max()!
+    }
+
+    override func viewDidDisappear() {
+        super.viewDidDisappear()
+    }
+
+    override func loadView() {
+        playerView.player = playerModel.avPlayerBackend.avPlayer
+        pictureInPictureDelegate.playerModel = playerModel
+
+        playerView.allowsPictureInPicturePlayback = true
+        playerView.showsFullScreenToggleButton = true
+
+        playerView.pictureInPictureDelegate = pictureInPictureDelegate
+
+        view = playerView
+    }
+}