Construire un lecteur vidéo .NET MAUI en C¶

using VisioForge.Core.UI.MAUI;

public static MauiApp CreateMauiApp()
{
    var builder = MauiApp.CreateBuilder();
    builder
        .UseMauiApp<App>()
        .UseSkiaSharp()
        .ConfigureMauiHandlers(handlers => handlers.AddVisioForgeHandlers());

    return builder.Build();
}

using VisioForge.Core;
using VisioForge.Core.MediaPlayerX;
using VisioForge.Core.Types;
using VisioForge.Core.Types.Events;
using VisioForge.Core.Types.X.AudioRenderers;
using VisioForge.Core.Types.X.Sources;
using VisioForge.Core.UI.MAUI;

public partial class MainPage : ContentPage
{
    private MediaPlayerCoreX _player;
    private System.Timers.Timer _positionTimer = new(500);
    private string _filename;
    private volatile bool _isTimerUpdate;

    public MainPage()
    {
        InitializeComponent();
        Loaded += MainPage_Loaded;
        _positionTimer.Elapsed += PositionTimer_Elapsed;
    }

    private async void MainPage_Loaded(object sender, EventArgs e)
    {
        IVideoView vv = videoView.GetVideoView();
        _player = new MediaPlayerCoreX(vv);

        _player.OnError += (_, args) => Debug.WriteLine(args.Message);
        _player.OnStop  += Player_OnStop;

        // iOS n'énumère pas les périphériques de sortie audio — ignorer le sélecteur ici.
#if !__IOS__ || __MACCATALYST__
        var outputs = await _player.Audio_OutputDevicesAsync();
        if (outputs.Length > 0)
            _player.Audio_OutputDevice = new AudioRendererSettings(outputs[0]);
#endif

        Window.Destroying += async (_, _) =>
        {
            if (_player != null)
            {
                await _player.StopAsync();
                await _player.DisposeAsync();
                _player = null;
            }
            VisioForgeX.DestroySDK();
        };
    }
}

private async void btOpen_Clicked(object sender, EventArgs e)
{
    var result = await FilePicker.Default.PickAsync();
    if (result == null) return;

    _filename = result.FullPath;

    var source = await UniversalSourceSettings.CreateAsync(new Uri(_filename));
    await _player.OpenAsync(source);
    await _player.PlayAsync();

    _positionTimer.Start();
    btPlayPause.Text = "PAUSE";
}

private async void btPlayPause_Clicked(object sender, EventArgs e)
{
    if (_player == null || string.IsNullOrEmpty(_filename)) return;

    switch (_player.State)
    {
        case PlaybackState.Play:
            await _player.PauseAsync();
            btPlayPause.Text = "PLAY";
            break;
        case PlaybackState.Pause:
            await _player.ResumeAsync();
            btPlayPause.Text = "PAUSE";
            break;
        case PlaybackState.Free:
            var source = await UniversalSourceSettings.CreateAsync(new Uri(_filename));
            await _player.OpenAsync(source);
            await _player.PlayAsync();
            _positionTimer.Start();
            btPlayPause.Text = "PAUSE";
            break;
    }
}

private async void btStop_Clicked(object sender, EventArgs e)
{
    _positionTimer.Stop();
    if (_player != null) await _player.StopAsync();
    btPlayPause.Text = "PLAY";
}

private async void PositionTimer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
{
    if (_player == null) return;

    var position = await _player.Position_GetAsync();
    var duration = await _player.DurationAsync();

    await MainThread.InvokeOnMainThreadAsync(() =>
    {
        _isTimerUpdate = true;
        slSeeking.Maximum = duration.TotalMilliseconds;
        slSeeking.Value   = Math.Min(position.TotalMilliseconds, slSeeking.Maximum);
        _isTimerUpdate = false;
    });
}

private async void slSeeking_ValueChanged(object sender, ValueChangedEventArgs e)
{
    if (!_isTimerUpdate && _player != null)
        await _player.Position_SetAsync(TimeSpan.FromMilliseconds(e.NewValue));
}

private void slVolume_ValueChanged(object sender, ValueChangedEventArgs e)
{
    if (_player != null)
        _player.Audio_OutputDevice_Volume = e.NewValue / 100.0;
}

private void Player_OnStop(object sender, StopEventArgs e)
    => MainThread.BeginInvokeOnMainThread(() =>
    {
        btPlayPause.Text = "PLAY";
        slSeeking.Value  = 0;
    });