add native debrid stream playback

Dreamio/VLCNativePlaybackBackend.swift

@@ -0,0 +1,58 @@
+import UIKit
+import MobileVLCKit
+
+final class VLCNativePlaybackBackend: NSObject, NativePlaybackBackend {
+    let view = UIView()
+    var onReady: (() -> Void)?
+    var onFailure: ((Error) -> Void)?
+
+    private let mediaPlayer = VLCMediaPlayer()
+
+    override init() {
+        super.init()
+        mediaPlayer.delegate = self
+        view.backgroundColor = .black
+    }
+
+    func prepare(in viewController: UIViewController) {
+        mediaPlayer.drawable = view
+    }
+
+    func play(request: NativePlaybackRequest) {
+        let media = VLCMedia(url: request.playbackURL)
+        var headers = ["Referer": request.referer]
+        if let userAgent = request.userAgent {
+            headers["User-Agent"] = userAgent
+        }
+
+        let headerValue = headers
+            .map { "\($0.key): \($0.value)" }
+            .joined(separator: "\r\n")
+        media.addOption(":http-referrer=\(request.referer)")
+        if let userAgent = request.userAgent {
+            media.addOption(":http-user-agent=\(userAgent)")
+        }
+        media.addOption(":http-header=\(headerValue)")
+
+        mediaPlayer.media = media
+        mediaPlayer.play()
+    }
+
+    func stop() {
+        mediaPlayer.stop()
+        mediaPlayer.media = nil
+    }
+}
+
+extension VLCNativePlaybackBackend: VLCMediaPlayerDelegate {
+    func mediaPlayerStateChanged(_ aNotification: Notification) {
+        switch mediaPlayer.state {
+        case .opening, .buffering, .playing:
+            onReady?()
+        case .error:
+            onFailure?(NativePlaybackError.backendUnavailable)
+        default:
+            break
+        }
+    }
+}