allow playback of items with duration of 1 second (#1618)

CHANGELOG.md

@@ -38,6 +38,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Fix timestamp continuity in `HLS Segmenter` sessions
   - This should make *some* clients happier 
 - Fix `Other Video`, `Song` and `Image` fallback metadata tags to always include parent folder (folder added to library) 
+- Allow playback of items with a duration of 1 second
 
 ### Changed
 - Log search index updates under scanner category at debug level, to indicate a potential cause for the UI being out of date

ErsatzTV.Application/Images/Commands/UpdateImageFolderDuration.cs

@@ -1,3 +1,3 @@
 namespace ErsatzTV.Application.Images;
 
-public record UpdateImageFolderDuration(int LibraryFolderId, int? ImageFolderDuration) : IRequest;
+public record UpdateImageFolderDuration(int LibraryFolderId, int? ImageFolderDuration) : IRequest<int?>;

ErsatzTV.Application/Images/Commands/UpdateImageFolderDurationHandler.cs

@@ -6,12 +6,17 @@ using Microsoft.EntityFrameworkCore;
 namespace ErsatzTV.Application.Images;
 
 public class UpdateImageFolderDurationHandler(IDbContextFactory<TvContext> dbContextFactory)
-    : IRequestHandler<UpdateImageFolderDuration>
+    : IRequestHandler<UpdateImageFolderDuration, int?>
 {
-    public async Task Handle(UpdateImageFolderDuration request, CancellationToken cancellationToken)
+    public async Task<int?> Handle(UpdateImageFolderDuration request, CancellationToken cancellationToken)
     {
         await using TvContext dbContext = await dbContextFactory.CreateDbContextAsync(cancellationToken);
 
+        if (request.ImageFolderDuration.IfNone(1) < 1)
+        {
+            request = request with { ImageFolderDuration = 1 };
+        }
+        
         // delete entry if null
         if (request.ImageFolderDuration is null)
         {
@@ -111,6 +116,8 @@ public class UpdateImageFolderDurationHandler(IDbContextFactory<TvContext> dbCon
                 queue.Enqueue(new FolderWithParentDuration(child, effectiveDuration));
             }
         }
+
+        return request.ImageFolderDuration;
     }
 
     private sealed record FolderWithParentDuration(LibraryFolder LibraryFolder, int? ParentDuration);

ErsatzTV.Application/Streaming/HlsSessionWorker.cs

@@ -344,7 +344,7 @@ public class HlsSessionWorker : IHlsSessionWorker
 
             DateTimeOffset now = _state is HlsSessionState.SeekAndWorkAhead
                 ? DateTimeOffset.Now
-                : _transcodedUntil.AddSeconds(_state is HlsSessionState.SeekAndRealtime ? 0 : 1);
+                : _transcodedUntil.AddSeconds(_state is HlsSessionState.SeekAndRealtime ? 0 : 0.5);
             bool startAtZero = _state is HlsSessionState.ZeroAndWorkAhead or HlsSessionState.ZeroAndRealtime;
 
             var request = new GetPlayoutItemProcessByChannelNumber(

ErsatzTV/Pages/ImageBrowser.razor

@@ -93,8 +93,7 @@
         DialogResult result = await dialog.Result;
         if (!result.Canceled)
         {
-            var duration = result.Data as int?;
+            int? duration = await Mediator.Send(new UpdateImageFolderDuration(item.LibraryFolderId, result.Data as int?), _cts.Token);
-            await Mediator.Send(new UpdateImageFolderDuration(item.LibraryFolderId, duration), _cts.Token);
             item.UpdateDuration(duration);
             await InvokeAsync(StateHasChanged);
         }