VideoView.cs

using LibVLCSharp.Shared;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Linq;
using System.Reflection.Metadata;
using System.Text;
using System.Threading.Tasks;

namespace RoleplayingVoiceCore {
    internal class VideoView : IVideoView, IDisposable, ISupportInitialize {
        public VideoView() {

        }

        MediaPlayer? _mp;

        /// <summary>
        /// The MediaPlayer attached to this view (or null)
        /// </summary>
        public MediaPlayer? MediaPlayer {
            get => _mp;
            set {
                if (ReferenceEquals(_mp, value)) {
                    return;
                }

                Detach();
                _mp = value;
                Attach();
            }
        }

        /// <summary>
        /// This currently does not do anything
        /// </summary>
        void ISupportInitialize.BeginInit() {
        }

        /// <summary>
        /// This attaches the mediaplayer to the view (if any)
        /// </summary>
        void ISupportInitialize.EndInit() {
            if (IsInDesignMode)
                return;

            Attach();
        }

        bool IsInDesignMode {
            get {
                return false;
            }
        }

        void Detach() {
            if (_mp == null || _mp.NativeReference == IntPtr.Zero)
                return;

            _mp.Hwnd = IntPtr.Zero;
        }

        void Attach() {
            if (_mp == null || _mp.NativeReference == IntPtr.Zero)
                return;

            _mp.Hwnd = Process.GetCurrentProcess().Handle;
        }

        bool disposedValue;

        public void Dispose(bool disposing) {
            if (!disposedValue) {
                if (disposing) {
                    if (MediaPlayer != null && MediaPlayer.NativeReference != IntPtr.Zero) {
                        MediaPlayer.Hwnd = IntPtr.Zero;
                    }
                }
                disposedValue = true;
            }
        }

        public void Dispose() {
            Dispose(true);
        }
    }
}