1 files changed, 36 insertions, 0 deletions
diff --git a/src/Jellyfin.MediaEncoding.Hls/Extensions/MediaEncodingHlsServiceCollectionExtensions.cs b/src/Jellyfin.MediaEncoding.Hls/Extensions/MediaEncodingHlsServiceCollectionExtensions.cs
new file mode 100644
index 000000000..8ed4edcea
--- /dev/null
+++ b/src/Jellyfin.MediaEncoding.Hls/Extensions/MediaEncodingHlsServiceCollectionExtensions.cs
@@ -0,0 +1,36 @@
+using System;
+using Jellyfin.MediaEncoding.Hls.Cache;
+using Jellyfin.MediaEncoding.Hls.Extractors;
+using Jellyfin.MediaEncoding.Hls.Playlist;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace Jellyfin.MediaEncoding.Hls.Extensions;
+
+/// <summary>
+/// Extensions for the <see cref="IServiceCollection"/> interface.
+/// </summary>
+public static class MediaEncodingHlsServiceCollectionExtensions
+{
+    /// <summary>
+    /// Adds the hls playlist generators to the <see cref="IServiceCollection"/>.
+    /// </summary>
+    /// <param name="serviceCollection">An instance of the <see cref="IServiceCollection"/> interface.</param>
+    /// <returns>The updated service collection.</returns>
+    public static IServiceCollection AddHlsPlaylistGenerator(this IServiceCollection serviceCollection)
+    {
+        serviceCollection.AddSingletonWithDecorator(typeof(FfProbeKeyframeExtractor));
+        serviceCollection.AddSingletonWithDecorator(typeof(MatroskaKeyframeExtractor));
+        serviceCollection.AddSingleton<IDynamicHlsPlaylistGenerator, DynamicHlsPlaylistGenerator>();
+        return serviceCollection;
+    }
+
+    private static void AddSingletonWithDecorator(this IServiceCollection serviceCollection, Type type)
+    {
+        serviceCollection.AddSingleton<IKeyframeExtractor>(serviceProvider =>
+        {
+            var extractor = ActivatorUtilities.CreateInstance(serviceProvider, type);
+            var decorator = ActivatorUtilities.CreateInstance<CacheDecorator>(serviceProvider, extractor);
+            return decorator;
+        });
+    }
+}