== null -> is null

Emby.Server.Implementations/ApplicationHost.cs

@@ -1006,7 +1006,7 @@ namespace Emby.Server.Implementations
             if (ConfigurationManager.GetNetworkConfiguration().EnablePublishedServerUriByRequest)
             {
                 int? requestPort = request.Host.Port;
-                if (requestPort == null
+                if (requestPort is null
                     || (requestPort == 80 && string.Equals(request.Scheme, "http", StringComparison.OrdinalIgnoreCase))
                     || (requestPort == 443 && string.Equals(request.Scheme, "https", StringComparison.OrdinalIgnoreCase)))
                 {
@@ -1190,7 +1190,7 @@ namespace Emby.Server.Implementations
                 }
             }
 
-            if (_sessionManager != null)
+            if (_sessionManager is not null)
             {
                 // used for closing websockets
                 foreach (var session in _sessionManager.Sessions)

Jellyfin.Api/Helpers/DynamicHlsHelper.cs

@@ -693,7 +693,7 @@ public class DynamicHlsHelper
             // Currently we only transcode to 8 bits AV1
             int bitDepth = 8;
             if (EncodingHelper.IsCopyCodec(state.OutputVideoCodec)
-                && state.VideoStream != null
+                && state.VideoStream is not null
                 && state.VideoStream.BitDepth.HasValue)
             {
                 bitDepth = state.VideoStream.BitDepth.Value;

Jellyfin.Api/ModelBinders/CommaDelimitedArrayModelBinder.cs

@@ -77,7 +77,7 @@ public class CommaDelimitedArrayModelBinder : IModelBinder
         var typedValueIndex = 0;
         for (var i = 0; i < parsedValues.Length; i++)
         {
-            if (parsedValues[i] != null)
+            if (parsedValues[i] is not null)
             {
                 typedValues.SetValue(parsedValues[i], typedValueIndex);
                 typedValueIndex++;

Jellyfin.Api/ModelBinders/PipeDelimitedArrayModelBinder.cs

@@ -77,7 +77,7 @@ public class PipeDelimitedArrayModelBinder : IModelBinder
         var typedValueIndex = 0;
         for (var i = 0; i < parsedValues.Length; i++)
         {
-            if (parsedValues[i] != null)
+            if (parsedValues[i] is not null)
             {
                 typedValues.SetValue(parsedValues[i], typedValueIndex);
                 typedValueIndex++;

Jellyfin.Server/Extensions/ApiServiceCollectionExtensions.cs

@@ -276,7 +276,7 @@ namespace Jellyfin.Server.Extensions
                 }
                 else if (NetworkExtensions.TryParseToSubnet(allowedProxies[i], out var subnet))
                 {
-                    if (subnet != null)
+                    if (subnet is not null)
                     {
                         AddIPAddress(config, options, subnet.Prefix, subnet.PrefixLength);
                     }

MediaBrowser.Controller/Entities/BaseItem.cs

@@ -1864,7 +1864,7 @@ namespace MediaBrowser.Controller.Entities
         /// <exception cref="ArgumentException">Backdrops should be accessed using Item.Backdrops.</exception>
         public bool HasImage(ImageType type, int imageIndex)
         {
-            return GetImageInfo(type, imageIndex) != null;
+            return GetImageInfo(type, imageIndex) is not null;
         }
 
         public void SetImage(ItemImageInfo image, int index)

MediaBrowser.Controller/Entities/TV/Episode.cs

@@ -99,7 +99,7 @@ namespace MediaBrowser.Controller.Entities.TV
         }
 
         [JsonIgnore]
-        public bool IsInSeasonFolder => FindParent<Season>() != null;
+        public bool IsInSeasonFolder => FindParent<Season>() is not null;
 
         [JsonIgnore]
         public string SeriesPresentationUniqueKey { get; set; }

MediaBrowser.Controller/Entities/Video.cs

@@ -333,7 +333,7 @@ namespace MediaBrowser.Controller.Entities
 
         protected override bool IsActiveRecording()
         {
-            return LiveTvManager.GetActiveRecordingInfo(Path) != null;
+            return LiveTvManager.GetActiveRecordingInfo(Path) is not null;
         }
 
         public override bool CanDelete()

MediaBrowser.Controller/Library/ItemResolveArgs.cs

@@ -217,7 +217,7 @@ namespace MediaBrowser.Controller.Library
         /// <returns><c>true</c> if [contains file system entry by name] [the specified name]; otherwise, <c>false</c>.</returns>
         public bool ContainsFileSystemEntryByName(string name)
         {
-            return GetFileSystemEntryByName(name) != null;
+            return GetFileSystemEntryByName(name) is not null;
         }
 
         public string GetCollectionType()

MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs

@@ -2692,7 +2692,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             string args = string.Empty;
 
             // http://ffmpeg.org/ffmpeg-all.html#toc-Complex-filtergraphs-1
-            if (state.VideoStream != null && videoProcessFilters.Contains("-filter_complex", StringComparison.Ordinal))
+            if (state.VideoStream is not null && videoProcessFilters.Contains("-filter_complex", StringComparison.Ordinal))
             {
                 int videoStreamIndex = FindIndex(state.MediaSource.MediaStreams, state.VideoStream);
 

MediaBrowser.Model/Dlna/StreamBuilder.cs

@@ -135,7 +135,7 @@ namespace MediaBrowser.Model.Dlna
                 }
             }
 
-            if (transcodingProfile != null)
+            if (transcodingProfile is not null)
             {
                 if (!item.SupportsTranscoding)
                 {
@@ -759,7 +759,7 @@ namespace MediaBrowser.Model.Dlna
             {
                 // prefer direct copy profile
                 float videoFramerate = videoStream?.AverageFrameRate ?? videoStream?.RealFrameRate ?? 0;
-                TransportStreamTimestamp? timestamp = videoStream == null ? TransportStreamTimestamp.None : item.Timestamp;
+                TransportStreamTimestamp? timestamp = videoStream is null ? TransportStreamTimestamp.None : item.Timestamp;
                 int? numAudioStreams = item.GetStreamCount(MediaStreamType.Audio);
                 int? numVideoStreams = item.GetStreamCount(MediaStreamType.Video);
 

MediaBrowser.Providers/MediaInfo/FFProbeVideoInfo.cs

@@ -128,7 +128,7 @@ namespace MediaBrowser.Providers.MediaInfo
                     var m2ts = _mediaEncoder.GetPrimaryPlaylistM2tsFiles(item.Path);
 
                     // Return if no playable .m2ts files are found
-                    if (blurayDiscInfo == null || blurayDiscInfo.Files.Length == 0 || m2ts.Count == 0)
+                    if (blurayDiscInfo is null || blurayDiscInfo.Files.Length == 0 || m2ts.Count == 0)
                     {
                         _logger.LogError("No playable .m2ts files found in Blu-ray structure, skipping FFprobe.");
                         return ItemUpdateType.MetadataImport;

src/Jellyfin.Extensions/Json/Converters/JsonDelimitedArrayConverter.cs

@@ -59,7 +59,7 @@ namespace Jellyfin.Extensions.Json.Converters
                 var typedValueIndex = 0;
                 for (var i = 0; i < stringEntries.Length; i++)
                 {
-                    if (parsedValues[i] != null)
+                    if (parsedValues[i] is not null)
                     {
                         typedValues.SetValue(parsedValues[i], typedValueIndex);
                         typedValueIndex++;

src/Jellyfin.Extensions/StreamExtensions.cs

@@ -40,7 +40,7 @@ namespace Jellyfin.Extensions
         public static IEnumerable<string> ReadAllLines(this TextReader reader)
         {
             string? line;
-            while ((line = reader.ReadLine()) != null)
+            while ((line = reader.ReadLine()) is not null)
             {
                 yield return line;
             }
@@ -54,7 +54,7 @@ namespace Jellyfin.Extensions
         public static async IAsyncEnumerable<string> ReadAllLinesAsync(this TextReader reader)
         {
             string? line;
-            while ((line = await reader.ReadLineAsync().ConfigureAwait(false)) != null)
+            while ((line = await reader.ReadLineAsync().ConfigureAwait(false)) is not null)
             {
                 yield return line;
             }