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Improve LibVLC stability and add external playback host

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- Add LibVLCManager singleton for safer LibVLC lifetime management
- Introduce VlcHostClient and VlcHost.exe for external playback via JSON commands
- Enhance VideoPlayer with error recovery and dependency property for SourceUrl
- Implement IDisposable in ProgramsData and ViewModels for better cleanup
- Update NuGet packages: LibVLCSharp to 3.9.6, System.Reactive to 6.1.0
- Add robust error handling and resource disposal throughout
- Improve program guide handling in PlayerViewModel
This commit is contained in:
Vladimir
2026-04-10 14:29:00 +03:00
parent 24ca481b64
commit 64a337ffe8
10 changed files with 554 additions and 35 deletions
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TV Player WPF/VideoPlayer.xaml.cs
+109 -22
View File
@@ -3,7 +3,6 @@ using LibVLCSharp.WPF;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using System.Windows.Threading;
namespace TV_Player
{
@@ -12,59 +11,142 @@ namespace TV_Player
/// </summary>
public partial class VideoPlayer : UserControl
{
public string SourceUrl { get; set; }
public static readonly DependencyProperty SourceUrlProperty = DependencyProperty.Register(
nameof(SourceUrl), typeof(string), typeof(VideoPlayer), new PropertyMetadata(string.Empty, OnSourceUrlChanged));
private LibVLC _libVLC;
public string SourceUrl
{
get => (string)GetValue(SourceUrlProperty);
set => SetValue(SourceUrlProperty, value);
}
private static void OnSourceUrlChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (d is VideoPlayer vp && e.NewValue is string url)
{
vp.OnSourceUrlChanged(url);
}
}
private void OnSourceUrlChanged(string url)
{
// when the bound source changes, trigger playback switch
try
{
VideoView.MediaPlayer?.Stop();
VideoView.MediaPlayer?.Media?.Dispose();
}
catch { }
AutoPlay();
}
private LibVLC _libVLC => LibVLCManager.Instance;
private MediaPlayer _mediaPlayer;
private PlayerViewModel _viewModel;
private VlcHostClient _vlcHost;
private bool _useHost;
//private DispatcherTimer _overlayAutoHideTimer;
public VideoPlayer()
{
InitializeComponent();
//_overlayAutoHideTimer = new DispatcherTimer();
//_overlayAutoHideTimer.Interval = TimeSpan.FromSeconds(3);
//_overlayAutoHideTimer.Tick += _overlayAutoHideTimer_Tick;
//_overlayAutoHideTimer.Start();
_libVLC = new LibVLC(enableDebugLogs: true);
_mediaPlayer = new MediaPlayer(_libVLC);
// try to start external host helper (if present)
try
{
_vlcHost = new VlcHostClient();
_useHost = _vlcHost.EnsureStarted();
}
catch { _useHost = false; }
// subscribe to error events to recover from playback errors
_mediaPlayer.EncounteredError += MediaPlayer_EncounteredError;
this.DataContextChanged += (sender, e) =>
{
_viewModel = (PlayerViewModel)e.NewValue;
_viewModel.SourceUrlChangedEvent += _viewModel_SourceUrlChangedEvent;
if (_viewModel != null)
{
try { _viewModel.SourceUrlChangedEvent -= _viewModel_SourceUrlChangedEvent; } catch { }
}
_viewModel = e.NewValue as PlayerViewModel;
if (_viewModel != null)
{
_viewModel.SourceUrlChangedEvent += _viewModel_SourceUrlChangedEvent;
}
};
VideoView.Loaded += (sender, e) =>
{
VideoView.MediaPlayer = _mediaPlayer;
VideoView.MouseLeftButtonDown += VideoView_MouseLeftButtonDown;
VideoView.MediaPlayer.EnableMouseInput = false;
if (VideoView.MediaPlayer != null)
VideoView.MediaPlayer.EnableMouseInput = false;
VideoView.PreviewMouseLeftButtonDown += VideoView_MouseLeftButtonDown;
AutoPlay();
};
Unloaded += VideoPlayer_Unloaded;
}
}
private void MediaPlayer_EncounteredError(object? sender, EventArgs e)
{
// MediaPlayer.EncounteredError can be raised on a native thread; marshal to UI thread
try
{
Application.Current.Dispatcher.BeginInvoke(new Action(() =>
{
System.Diagnostics.Debug.WriteLine("[VideoPlayer] MediaPlayer encountered error — attempting recovery");
try { VideoView.MediaPlayer?.Stop(); } catch { }
try { VideoView.MediaPlayer?.Media?.Dispose(); } catch { }
// dispose existing player and try full LibVLC restart to recover native/network resources
try { _mediaPlayer.EncounteredError -= MediaPlayer_EncounteredError; } catch { }
try { VideoView.MediaPlayer?.Stop(); } catch { }
try { VideoView.MediaPlayer?.Media?.Dispose(); } catch { }
try { _mediaPlayer?.Dispose(); } catch { }
try { LibVLCManager.Dispose(); } catch { }
// recreate LibVLC and MediaPlayer
var lib = LibVLCManager.Instance;
_mediaPlayer = new MediaPlayer(lib);
_mediaPlayer.EncounteredError += MediaPlayer_EncounteredError;
// re-assign to the view and restart playback
VideoView.MediaPlayer = _mediaPlayer;
AutoPlay();
}));
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine($"[VideoPlayer] Error handling encountered error: {ex}");
}
}
private void _viewModel_SourceUrlChangedEvent(string videoURL)
{
SourceUrl = videoURL;
VideoView.MediaPlayer.Stop();
VideoView.MediaPlayer.Media.Dispose();
try
{
VideoView.MediaPlayer?.Stop();
VideoView.MediaPlayer?.Media?.Dispose();
}
catch { }
AutoPlay();
}
private void VideoView_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
ToggleOverlay();
}
private void VideoPlayer_Unloaded(object sender, RoutedEventArgs e)
{
VideoView.Dispose();
// Dispose the VideoView (releases native view references) but keep the shared LibVLC instance
try { VideoView.Dispose(); } catch { }
}
void PauseButton_Click(object sender, RoutedEventArgs e)
{
@@ -75,7 +157,9 @@ namespace TV_Player
}
private void AutoPlay()
{
if (!VideoView.MediaPlayer.IsPlaying)
if (VideoView?.MediaPlayer == null) return;
if (!VideoView.MediaPlayer.IsPlaying && !string.IsNullOrWhiteSpace(SourceUrl))
{
using (var media = new Media(_libVLC, new Uri(SourceUrl)))
VideoView.MediaPlayer.Play(media);
@@ -90,7 +174,8 @@ namespace TV_Player
{
if (overlayPanel.Visibility == Visibility.Visible)
{
_viewModel.ProgramGuideVisible = false;
if (_viewModel != null)
_viewModel.ProgramGuideVisible = false;
HideOverlay();
}
else
@@ -116,8 +201,10 @@ namespace TV_Player
}
private void UserControl_Unloaded(object sender, RoutedEventArgs e)
{
_viewModel.SourceUrlChangedEvent -= _viewModel_SourceUrlChangedEvent;
VideoView.MediaPlayer?.Dispose();
try { if(VideoView.MediaPlayer.IsPlaying) VideoView.MediaPlayer?.Stop(); } catch { }
try { _mediaPlayer?.Dispose(); } catch { }
try { if (_viewModel != null) _viewModel.SourceUrlChangedEvent -= _viewModel_SourceUrlChangedEvent; } catch { }
try { VideoView.MediaPlayer?.Dispose(); } catch { }
}
}
}