Bump version to 10.8.11

jellyfin-ffmpeg 5.1.3-5, 6.0-6 or newer contains a more efficient fix than this one.

.ci/azure-pipelines-package.yml

@@ -39,6 +39,10 @@ jobs:
     vmImage: 'ubuntu-latest'
 
   steps:
+  - script: echo "##vso[task.setvariable variable=JellyfinVersion]$( awk -F '/' '{ print $NF }' <<<'$(Build.SourceBranch)' | sed 's/^v//' )"
+    displayName: Set release version (stable)
+    condition: startsWith(variables['Build.SourceBranch'], 'refs/tags/v')
+
   - script: 'docker build -f deployment/Dockerfile.$(BuildConfiguration) -t jellyfin-server-$(BuildConfiguration) deployment'
     displayName: 'Build Dockerfile'
 
@@ -80,6 +84,10 @@ jobs:
     vmImage: 'ubuntu-latest'
 
   steps:
+  - script: echo "##vso[task.setvariable variable=JellyfinVersion]$( awk -F '/' '{ print $NF }' <<<'$(Build.SourceBranch)' | sed 's/^v//' )"
+    displayName: Set release version (stable)
+    condition: startsWith(variables['Build.SourceBranch'], 'refs/tags/v')
+
   - task: DownloadPipelineArtifact@2
     displayName: 'Download OpenAPI Spec'
     inputs:

.copr

@@ -0,0 +1 @@
+fedora

.copr/Makefile

@@ -1 +0,0 @@
-../fedora/Makefile

.github/stale.yml

@@ -1,29 +0,0 @@
-# Number of days of inactivity before an issue becomes stale
-daysUntilStale: 120
-# Number of days of inactivity before a stale issue is closed
-daysUntilClose: 21
-# Issues with these labels will never be considered stale
-exemptLabels:
-  - regression
-  - security
-  - dotnet-3.0-future
-  - roadmap
-  - future
-  - feature
-  - enhancement
-  - confirmed
-# Label to use when marking an issue as stale
-staleLabel: stale
-# Comment to post when marking an issue as stale. Set to `false` to disable
-markComment: >
-  This issue has gone 120 days without comment. To avoid abandoned issues, it will be closed in 21 days if there are no new comments.
-
-  If you're the original submitter of this issue, please comment confirming if this issue still affects you in the latest release or nightlies, or close the issue if it has been fixed. If you're another user also affected by this bug, please comment confirming so. Either action will remove the stale label.
-
-  This bot exists to prevent issues from becoming stale and forgotten. Jellyfin is always moving forward, and bugs are often fixed as side effects of other changes. We therefore ask that bug report authors remain vigilant about their issues to ensure they are closed if fixed, or re-confirmed - perhaps with fresh logs or reproduction examples - regularly. If you have any questions you can reach us on [Matrix or Social Media](https://docs.jellyfin.org/general/getting-help.html).
-# Comment to post when closing a stale issue. Set to `false` to disable
-closeComment: false
-
-# Disable automatic closing of pull requests
-pulls:
-  daysUntilClose: false

.github/workflows/codeql-analysis.yml

@@ -20,9 +20,9 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: Setup .NET Core
-      uses: actions/setup-dotnet@v1
+      uses: actions/setup-dotnet@v2
       with:
         dotnet-version: '6.0.x'
 

.github/workflows/commands.yml

@@ -23,7 +23,7 @@ jobs:
           reactions: '+1'
 
       - name: Checkout the latest code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           token: ${{ secrets.JF_BOT_TOKEN }}
           fetch-depth: 0
@@ -47,7 +47,7 @@ jobs:
           reactions: eyes
 
       - name: Checkout the latest code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           token: ${{ secrets.JF_BOT_TOKEN }}
           fetch-depth: 0

.github/workflows/openapi.yml

@@ -12,12 +12,12 @@ jobs:
     permissions: read-all
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
-          ref: ${{ github.event.pull_request.head.ref }}
+          ref: ${{ github.event.pull_request.head.sha }}
           repository: ${{ github.event.pull_request.head.repo.full_name }}
       - name: Setup .NET Core
-        uses: actions/setup-dotnet@v1
+        uses: actions/setup-dotnet@v2
         with:
           dotnet-version: '6.0.x'
       - name: Generate openapi.json
@@ -37,11 +37,11 @@ jobs:
     permissions: read-all
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           ref: ${{ github.base_ref }}
       - name: Setup .NET Core
-        uses: actions/setup-dotnet@v1
+        uses: actions/setup-dotnet@v2
         with:
           dotnet-version: '6.0.x'
       - name: Generate openapi.json

.github/workflows/repo-stale.yaml

@@ -0,0 +1,27 @@
+name: Issue Stale Check
+
+on:
+  schedule:
+    - cron: '30 1 * * *'
+  workflow_dispatch:
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    if: ${{ contains(github.repository, 'jellyfin/') }}
+    steps:
+      - uses: actions/stale@v5
+        with:
+          repo-token: ${{ secrets.JF_BOT_TOKEN }}
+          days-before-stale: 120
+          days-before-pr-stale: -1
+          days-before-close: 21
+          days-before-pr-close: -1
+          exempt-issue-labels: regression,security,roadmap,future,feature,enhancement,confirmed
+          stale-issue-label: stale
+          stale-issue-message: |-
+            This issue has gone 120 days without comment. To avoid abandoned issues, it will be closed in 21 days if there are no new comments.
+            
+            If you're the original submitter of this issue, please comment confirming if this issue still affects you in the latest release or master branch, or close the issue if it has been fixed. If you're another user also affected by this bug, please comment confirming so. Either action will remove the stale label.
+            
+            This bot exists to prevent issues from becoming stale and forgotten. Jellyfin is always moving forward, and bugs are often fixed as side effects of other changes. We therefore ask that bug report authors remain vigilant about their issues to ensure they are closed if fixed, or re-confirmed - perhaps with fresh logs or reproduction examples - regularly. If you have any questions you can reach us on [Matrix or Social Media](https://docs.jellyfin.org/general/getting-help.html).

BannedSymbols.txt

@@ -0,0 +1,4 @@
+P:System.Threading.Tasks.Task`1.Result
+M:System.Guid.op_Equality(System.Guid,System.Guid)
+M:System.Guid.op_Inequality(System.Guid,System.Guid)
+M:System.Guid.Equals(System.Object)

CONTRIBUTORS.md

@@ -1,5 +1,6 @@
 # Jellyfin Contributors
 
+ - [1337joe](https://github.com/1337joe)
  - [97carmine](https://github.com/97carmine)
  - [Abbe98](https://github.com/Abbe98)
  - [agrenott](https://github.com/agrenott)
@@ -26,6 +27,7 @@
  - [cvium](https://github.com/cvium)
  - [dannymichel](https://github.com/dannymichel)
  - [DaveChild](https://github.com/DaveChild)
+ - [DavidFair](https://github.com/DavidFair)
  - [Delgan](https://github.com/Delgan)
  - [dcrdev](https://github.com/dcrdev)
  - [dhartung](https://github.com/dhartung)
@@ -35,6 +37,7 @@
  - [dmitrylyzo](https://github.com/dmitrylyzo)
  - [DMouse10462](https://github.com/DMouse10462)
  - [DrPandemic](https://github.com/DrPandemic)
+ - [eglia](https://github.com/eglia)
  - [EraYaN](https://github.com/EraYaN)
  - [escabe](https://github.com/escabe)
  - [excelite](https://github.com/excelite)
@@ -45,6 +48,7 @@
  - [Froghut](https://github.com/Froghut)
  - [fruhnow](https://github.com/fruhnow)
  - [geilername](https://github.com/geilername)
+ - [GermanCoding](https://github.com/GermanCoding)
  - [gnattu](https://github.com/gnattu)
  - [GodTamIt](https://github.com/GodTamIt)
  - [grafixeyehero](https://github.com/grafixeyehero)
@@ -76,6 +80,7 @@
  - [mitchfizz05](https://github.com/mitchfizz05)
  - [MrTimscampi](https://github.com/MrTimscampi)
  - [n8225](https://github.com/n8225)
+ - [Nalsai](https://github.com/Nalsai)
  - [Narfinger](https://github.com/Narfinger)
  - [NathanPickard](https://github.com/NathanPickard)
  - [neilsb](https://github.com/neilsb)
@@ -115,6 +120,7 @@
  - [ssenart](https://github.com/ssenart)
  - [stanionascu](https://github.com/stanionascu)
  - [stevehayles](https://github.com/stevehayles)
+ - [StollD](https://github.com/StollD)
  - [SuperSandro2000](https://github.com/SuperSandro2000)
  - [tbraeutigam](https://github.com/tbraeutigam)
  - [teacupx](https://github.com/teacupx)
@@ -151,6 +157,10 @@
  - [peterspenler](https://github.com/peterspenler)
  - [MBR-0001](https://github.com/MBR-0001)
  - [jonas-resch](https://github.com/jonas-resch)
+ - [vgambier](https://github.com/vgambier)
+ - [MinecraftPlaye](https://github.com/MinecraftPlaye)
+ - [RealGreenDragon](https://github.com/RealGreenDragon)
+ - [TheTyrius](https://github.com/TheTyrius)
 
 # Emby Contributors
 
@@ -217,3 +227,5 @@
  - [olsh](https://github.com/olsh)
  - [lbenini](https://github.com/lbenini)
  - [gnuyent](https://github.com/gnuyent)
+ - [Matthew Jones](https://github.com/matthew-jones-uk)
+ - [Jakob Kukla](https://github.com/jakobkukla)

Directory.Build.props

@@ -6,7 +6,7 @@
     <CodeAnalysisRuleSet>$(MSBuildThisFileDirectory)/jellyfin.ruleset</CodeAnalysisRuleSet>
   </PropertyGroup>
 
-  <PropertyGroup Condition=" '$(Configuration)' == 'Release' ">
+  <PropertyGroup>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
 
@@ -14,4 +14,8 @@
     <AnalysisMode>AllEnabledByDefault</AnalysisMode>
   </PropertyGroup>
 
+  <ItemGroup>
+    <AdditionalFiles Include="$(SolutionDir)/BannedSymbols.txt" />
+  </ItemGroup>
+
 </Project>

Dockerfile

@@ -22,10 +22,10 @@ ARG APT_KEY_DONT_WARN_ON_DANGEROUS_USAGE=DontWarn
 ENV NVIDIA_DRIVER_CAPABILITIES="compute,video,utility"
 
 # https://github.com/intel/compute-runtime/releases
-ARG GMMLIB_VERSION=21.2.1
-ARG IGC_VERSION=1.0.8517
-ARG NEO_VERSION=21.35.20826
-ARG LEVEL_ZERO_VERSION=1.2.20826
+ARG GMMLIB_VERSION=22.0.2
+ARG IGC_VERSION=1.0.10395
+ARG NEO_VERSION=22.08.22549
+ARG LEVEL_ZERO_VERSION=1.3.22549
 
 # Install dependencies:
 # mesa-va-drivers: needed for AMD VAAPI. Mesa >= 20.1 is required for HEVC transcoding.
@@ -48,8 +48,7 @@ RUN apt-get update \
  && wget https://github.com/intel/compute-runtime/releases/download/${NEO_VERSION}/intel-gmmlib_${GMMLIB_VERSION}_amd64.deb \
  && wget https://github.com/intel/intel-graphics-compiler/releases/download/igc-${IGC_VERSION}/intel-igc-core_${IGC_VERSION}_amd64.deb \
  && wget https://github.com/intel/intel-graphics-compiler/releases/download/igc-${IGC_VERSION}/intel-igc-opencl_${IGC_VERSION}_amd64.deb \
- && wget https://github.com/intel/compute-runtime/releases/download/${NEO_VERSION}/intel-opencl_${NEO_VERSION}_amd64.deb \
- && wget https://github.com/intel/compute-runtime/releases/download/${NEO_VERSION}/intel-ocloc_${NEO_VERSION}_amd64.deb \
+ && wget https://github.com/intel/compute-runtime/releases/download/${NEO_VERSION}/intel-opencl-icd_${NEO_VERSION}_amd64.deb \
  && wget https://github.com/intel/compute-runtime/releases/download/${NEO_VERSION}/intel-level-zero-gpu_${LEVEL_ZERO_VERSION}_amd64.deb \
  && dpkg -i *.deb \
  && cd .. \
@@ -73,7 +72,7 @@ COPY . .
 ENV DOTNET_CLI_TELEMETRY_OPTOUT=1
 # because of changes in docker and systemd we need to not build in parallel at the moment
 # see https://success.docker.com/article/how-to-reserve-resource-temporarily-unavailable-errors-due-to-tasksmax-setting
-RUN dotnet publish Jellyfin.Server --disable-parallel --configuration Release --output="/jellyfin" --self-contained --runtime linux-x64 "-p:DebugSymbols=false;DebugType=none"
+RUN dotnet publish Jellyfin.Server --disable-parallel --configuration Release --output="/jellyfin" --self-contained --runtime linux-x64 -p:DebugSymbols=false -p:DebugType=none
 
 FROM app
 
@@ -83,7 +82,7 @@ COPY --from=builder /jellyfin /jellyfin
 COPY --from=web-builder /dist /jellyfin/jellyfin-web
 
 EXPOSE 8096
-VOLUME /cache /config /media
+VOLUME /cache /config
 ENTRYPOINT ["./jellyfin/jellyfin", \
     "--datadir", "/config", \
     "--cachedir", "/cache", \

Dockerfile.arm

@@ -64,7 +64,7 @@ ENV DOTNET_CLI_TELEMETRY_OPTOUT=1
 # Discard objs - may cause failures if exists
 RUN find . -type d -name obj | xargs -r rm -r
 # Build
-RUN dotnet publish Jellyfin.Server --configuration Release --output="/jellyfin" --self-contained --runtime linux-arm "-p:DebugSymbols=false;DebugType=none"
+RUN dotnet publish Jellyfin.Server --configuration Release --output="/jellyfin" --self-contained --runtime linux-arm -p:DebugSymbols=false -p:DebugType=none
 
 FROM app
 
@@ -74,7 +74,7 @@ COPY --from=builder /jellyfin /jellyfin
 COPY --from=web-builder /dist /jellyfin/jellyfin-web
 
 EXPOSE 8096
-VOLUME /cache /config /media
+VOLUME /cache /config
 ENTRYPOINT ["./jellyfin/jellyfin", \
     "--datadir", "/config", \
     "--cachedir", "/cache", \

Dockerfile.arm64

@@ -55,7 +55,7 @@ ENV DOTNET_CLI_TELEMETRY_OPTOUT=1
 # Discard objs - may cause failures if exists
 RUN find . -type d -name obj | xargs -r rm -r
 # Build
-RUN dotnet publish Jellyfin.Server --configuration Release --output="/jellyfin" --self-contained --runtime linux-arm64 "-p:DebugSymbols=false;DebugType=none"
+RUN dotnet publish Jellyfin.Server --configuration Release --output="/jellyfin" --self-contained --runtime linux-arm64 -p:DebugSymbols=false -p:DebugType=none
 
 FROM app
 
@@ -65,7 +65,7 @@ COPY --from=builder /jellyfin /jellyfin
 COPY --from=web-builder /dist /jellyfin/jellyfin-web
 
 EXPOSE 8096
-VOLUME /cache /config /media
+VOLUME /cache /config
 ENTRYPOINT ["./jellyfin/jellyfin", \
     "--datadir", "/config", \
     "--cachedir", "/cache", \

Emby.Dlna/Configuration/DlnaOptions.cs

@@ -13,7 +13,7 @@ namespace Emby.Dlna.Configuration
         public DlnaOptions()
         {
             EnablePlayTo = true;
-            EnableServer = true;
+            EnableServer = false;
             BlastAliveMessages = true;
             SendOnlyMatchedHost = true;
             ClientDiscoveryIntervalSeconds = 60;

Emby.Dlna/ContentDirectory/ControlHandler.cs

@@ -18,11 +18,8 @@ using MediaBrowser.Controller.Drawing;
 using MediaBrowser.Controller.Dto;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Entities.Audio;
-using MediaBrowser.Controller.Entities.Movies;
 using MediaBrowser.Controller.Library;
-using MediaBrowser.Controller.LiveTv;
 using MediaBrowser.Controller.MediaEncoding;
-using MediaBrowser.Controller.Playlists;
 using MediaBrowser.Controller.TV;
 using MediaBrowser.Model.Dlna;
 using MediaBrowser.Model.Dto;
@@ -30,12 +27,7 @@ using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.Globalization;
 using MediaBrowser.Model.Querying;
 using Microsoft.Extensions.Logging;
-using Book = MediaBrowser.Controller.Entities.Book;
-using Episode = MediaBrowser.Controller.Entities.TV.Episode;
 using Genre = MediaBrowser.Controller.Entities.Genre;
-using Movie = MediaBrowser.Controller.Entities.Movies.Movie;
-using MusicAlbum = MediaBrowser.Controller.Entities.Audio.MusicAlbum;
-using Series = MediaBrowser.Controller.Entities.TV.Series;
 
 namespace Emby.Dlna.ContentDirectory
 {
@@ -539,7 +531,7 @@ namespace Emby.Dlna.ContentDirectory
                 User = user,
                 Recursive = true,
                 IsMissing = false,
-                ExcludeItemTypes = new[] { nameof(Book) },
+                ExcludeItemTypes = new[] { BaseItemKind.Book },
                 IsFolder = isFolder,
                 MediaTypes = mediaTypes,
                 DtoOptions = GetDtoOptions()
@@ -619,7 +611,7 @@ namespace Emby.Dlna.ContentDirectory
                 Limit = limit,
                 StartIndex = startIndex,
                 IsVirtualItem = false,
-                ExcludeItemTypes = new[] { nameof(Book) },
+                ExcludeItemTypes = new[] { BaseItemKind.Book },
                 IsPlaceHolder = false,
                 DtoOptions = GetDtoOptions(),
                 OrderBy = GetOrderBy(sort, folder.IsPreSorted)
@@ -627,7 +619,7 @@ namespace Emby.Dlna.ContentDirectory
 
             var queryResult = folder.GetItems(query);
 
-            return ToResult(queryResult);
+            return ToResult(startIndex, queryResult);
         }
 
         /// <summary>
@@ -644,13 +636,13 @@ namespace Emby.Dlna.ContentDirectory
             {
                 StartIndex = startIndex,
                 Limit = limit,
-                IncludeItemTypes = new[] { nameof(LiveTvChannel) },
+                IncludeItemTypes = new[] { BaseItemKind.LiveTvChannel },
                 OrderBy = GetOrderBy(sort, false)
             };
 
             var result = _libraryManager.GetItemsResult(query);
 
-            return ToResult(result);
+            return ToResult(startIndex, result);
         }
 
         /// <summary>
@@ -675,39 +667,39 @@ namespace Emby.Dlna.ContentDirectory
             switch (stubType)
             {
                 case StubType.Latest:
-                    return GetLatest(item, query, nameof(Audio));
+                    return GetLatest(item, query, BaseItemKind.Audio);
                 case StubType.Playlists:
                     return GetMusicPlaylists(query);
                 case StubType.Albums:
-                    return GetChildrenOfItem(item, query, nameof(MusicAlbum));
+                    return GetChildrenOfItem(item, query, BaseItemKind.MusicAlbum);
                 case StubType.Artists:
                     return GetMusicArtists(item, query);
                 case StubType.AlbumArtists:
                     return GetMusicAlbumArtists(item, query);
                 case StubType.FavoriteAlbums:
-                    return GetChildrenOfItem(item, query, nameof(MusicAlbum), true);
+                    return GetChildrenOfItem(item, query, BaseItemKind.MusicAlbum, true);
                 case StubType.FavoriteArtists:
                     return GetFavoriteArtists(item, query);
                 case StubType.FavoriteSongs:
-                    return GetChildrenOfItem(item, query, nameof(Audio), true);
+                    return GetChildrenOfItem(item, query, BaseItemKind.Audio, true);
                 case StubType.Songs:
-                    return GetChildrenOfItem(item, query, nameof(Audio));
+                    return GetChildrenOfItem(item, query, BaseItemKind.Audio);
                 case StubType.Genres:
                     return GetMusicGenres(item, query);
             }
 
             var serverItems = new ServerItem[]
             {
-                new (item, StubType.Latest),
-                new (item, StubType.Playlists),
-                new (item, StubType.Albums),
-                new (item, StubType.AlbumArtists),
-                new (item, StubType.Artists),
-                new (item, StubType.Songs),
-                new (item, StubType.Genres),
-                new (item, StubType.FavoriteArtists),
-                new (item, StubType.FavoriteAlbums),
-                new (item, StubType.FavoriteSongs)
+                new(item, StubType.Latest),
+                new(item, StubType.Playlists),
+                new(item, StubType.Albums),
+                new(item, StubType.AlbumArtists),
+                new(item, StubType.Artists),
+                new(item, StubType.Songs),
+                new(item, StubType.Genres),
+                new(item, StubType.FavoriteArtists),
+                new(item, StubType.FavoriteAlbums),
+                new(item, StubType.FavoriteSongs)
             };
 
             if (limit < serverItems.Length)
@@ -715,11 +707,10 @@ namespace Emby.Dlna.ContentDirectory
                 serverItems = serverItems[..limit.Value];
             }
 
-            return new QueryResult<ServerItem>
-            {
-                Items = serverItems,
-                TotalRecordCount = serverItems.Length
-            };
+            return new QueryResult<ServerItem>(
+                startIndex,
+                serverItems.Length,
+                serverItems);
         }
 
         /// <summary>
@@ -746,25 +737,25 @@ namespace Emby.Dlna.ContentDirectory
                 case StubType.ContinueWatching:
                     return GetMovieContinueWatching(item, query);
                 case StubType.Latest:
-                    return GetLatest(item, query, nameof(Movie));
+                    return GetLatest(item, query, BaseItemKind.Movie);
                 case StubType.Movies:
-                    return GetChildrenOfItem(item, query, nameof(Movie));
+                    return GetChildrenOfItem(item, query, BaseItemKind.Movie);
                 case StubType.Collections:
                     return GetMovieCollections(query);
                 case StubType.Favorites:
-                    return GetChildrenOfItem(item, query, nameof(Movie), true);
+                    return GetChildrenOfItem(item, query, BaseItemKind.Movie, true);
                 case StubType.Genres:
                     return GetGenres(item, query);
             }
 
             var array = new ServerItem[]
             {
-                new (item, StubType.ContinueWatching),
-                new (item, StubType.Latest),
-                new (item, StubType.Movies),
-                new (item, StubType.Collections),
-                new (item, StubType.Favorites),
-                new (item, StubType.Genres)
+                new(item, StubType.ContinueWatching),
+                new(item, StubType.Latest),
+                new(item, StubType.Movies),
+                new(item, StubType.Collections),
+                new(item, StubType.Favorites),
+                new(item, StubType.Genres)
             };
 
             if (limit < array.Length)
@@ -772,11 +763,10 @@ namespace Emby.Dlna.ContentDirectory
                 array = array[..limit.Value];
             }
 
-            return new QueryResult<ServerItem>
-            {
-                Items = array,
-                TotalRecordCount = array.Length
-            };
+            return new QueryResult<ServerItem>(
+                startIndex,
+                array.Length,
+                array);
         }
 
         /// <summary>
@@ -798,11 +788,10 @@ namespace Emby.Dlna.ContentDirectory
                 .Select(i => new ServerItem(i, StubType.Folder))
                 .ToArray();
 
-            return new QueryResult<ServerItem>
-            {
-                Items = items,
-                TotalRecordCount = totalRecordCount
-            };
+            return new QueryResult<ServerItem>(
+                startIndex,
+                totalRecordCount,
+                items);
         }
 
         /// <summary>
@@ -831,26 +820,26 @@ namespace Emby.Dlna.ContentDirectory
                 case StubType.NextUp:
                     return GetNextUp(item, query);
                 case StubType.Latest:
-                    return GetLatest(item, query, nameof(Episode));
+                    return GetLatest(item, query, BaseItemKind.Episode);
                 case StubType.Series:
-                    return GetChildrenOfItem(item, query, nameof(Series));
+                    return GetChildrenOfItem(item, query, BaseItemKind.Series);
                 case StubType.FavoriteSeries:
-                    return GetChildrenOfItem(item, query, nameof(Series), true);
+                    return GetChildrenOfItem(item, query, BaseItemKind.Series, true);
                 case StubType.FavoriteEpisodes:
-                    return GetChildrenOfItem(item, query, nameof(Episode), true);
+                    return GetChildrenOfItem(item, query, BaseItemKind.Episode, true);
                 case StubType.Genres:
                     return GetGenres(item, query);
             }
 
             var serverItems = new ServerItem[]
             {
-                new (item, StubType.ContinueWatching),
-                new (item, StubType.NextUp),
-                new (item, StubType.Latest),
-                new (item, StubType.Series),
-                new (item, StubType.FavoriteSeries),
-                new (item, StubType.FavoriteEpisodes),
-                new (item, StubType.Genres)
+                new(item, StubType.ContinueWatching),
+                new(item, StubType.NextUp),
+                new(item, StubType.Latest),
+                new(item, StubType.Series),
+                new(item, StubType.FavoriteSeries),
+                new(item, StubType.FavoriteEpisodes),
+                new(item, StubType.Genres)
             };
 
             if (limit < serverItems.Length)
@@ -858,11 +847,10 @@ namespace Emby.Dlna.ContentDirectory
                 serverItems = serverItems[..limit.Value];
             }
 
-            return new QueryResult<ServerItem>
-            {
-                Items = serverItems,
-                TotalRecordCount = serverItems.Length
-            };
+            return new QueryResult<ServerItem>(
+                startIndex,
+                serverItems.Length,
+                serverItems);
         }
 
         /// <summary>
@@ -887,7 +875,7 @@ namespace Emby.Dlna.ContentDirectory
 
             var result = _libraryManager.GetItemsResult(query);
 
-            return ToResult(result);
+            return ToResult(query.StartIndex, result);
         }
 
         /// <summary>
@@ -898,11 +886,11 @@ namespace Emby.Dlna.ContentDirectory
         private QueryResult<ServerItem> GetMovieCollections(InternalItemsQuery query)
         {
             query.Recursive = true;
-            query.IncludeItemTypes = new[] { nameof(BoxSet) };
+            query.IncludeItemTypes = new[] { BaseItemKind.BoxSet };
 
             var result = _libraryManager.GetItemsResult(query);
 
-            return ToResult(result);
+            return ToResult(query.StartIndex, result);
         }
 
         /// <summary>
@@ -913,7 +901,7 @@ namespace Emby.Dlna.ContentDirectory
         /// <param name="itemType">The item type.</param>
         /// <param name="isFavorite">A value indicating whether to only fetch favorite items.</param>
         /// <returns>The <see cref="QueryResult{ServerItem}"/>.</returns>
-        private QueryResult<ServerItem> GetChildrenOfItem(BaseItem parent, InternalItemsQuery query, string itemType, bool isFavorite = false)
+        private QueryResult<ServerItem> GetChildrenOfItem(BaseItem parent, InternalItemsQuery query, BaseItemKind itemType, bool isFavorite = false)
         {
             query.Recursive = true;
             query.Parent = parent;
@@ -922,7 +910,7 @@ namespace Emby.Dlna.ContentDirectory
 
             var result = _libraryManager.GetItemsResult(query);
 
-            return ToResult(result);
+            return ToResult(query.StartIndex, result);
         }
 
         /// <summary>
@@ -939,7 +927,7 @@ namespace Emby.Dlna.ContentDirectory
             query.AncestorIds = new[] { parent.Id };
             var genresResult = _libraryManager.GetGenres(query);
 
-            return ToResult(genresResult);
+            return ToResult(query.StartIndex, genresResult);
         }
 
         /// <summary>
@@ -955,7 +943,7 @@ namespace Emby.Dlna.ContentDirectory
             query.AncestorIds = new[] { parent.Id };
             var genresResult = _libraryManager.GetMusicGenres(query);
 
-            return ToResult(genresResult);
+            return ToResult(query.StartIndex, genresResult);
         }
 
         /// <summary>
@@ -971,7 +959,7 @@ namespace Emby.Dlna.ContentDirectory
             query.AncestorIds = new[] { parent.Id };
             var artists = _libraryManager.GetAlbumArtists(query);
 
-            return ToResult(artists);
+            return ToResult(query.StartIndex, artists);
         }
 
         /// <summary>
@@ -986,7 +974,7 @@ namespace Emby.Dlna.ContentDirectory
             query.OrderBy = Array.Empty<(string, SortOrder)>();
             query.AncestorIds = new[] { parent.Id };
             var artists = _libraryManager.GetArtists(query);
-            return ToResult(artists);
+            return ToResult(query.StartIndex, artists);
         }
 
         /// <summary>
@@ -1002,7 +990,7 @@ namespace Emby.Dlna.ContentDirectory
             query.AncestorIds = new[] { parent.Id };
             query.IsFavorite = true;
             var artists = _libraryManager.GetArtists(query);
-            return ToResult(artists);
+            return ToResult(query.StartIndex, artists);
         }
 
         /// <summary>
@@ -1013,12 +1001,12 @@ namespace Emby.Dlna.ContentDirectory
         private QueryResult<ServerItem> GetMusicPlaylists(InternalItemsQuery query)
         {
             query.Parent = null;
-            query.IncludeItemTypes = new[] { nameof(Playlist) };
+            query.IncludeItemTypes = new[] { BaseItemKind.Playlist };
             query.Recursive = true;
 
             var result = _libraryManager.GetItemsResult(query);
 
-            return ToResult(result);
+            return ToResult(query.StartIndex, result);
         }
 
         /// <summary>
@@ -1042,7 +1030,7 @@ namespace Emby.Dlna.ContentDirectory
                 new[] { parent },
                 query.DtoOptions);
 
-            return ToResult(result);
+            return ToResult(query.StartIndex, result);
         }
 
         /// <summary>
@@ -1052,7 +1040,7 @@ namespace Emby.Dlna.ContentDirectory
         /// <param name="query">The <see cref="InternalItemsQuery"/>.</param>
         /// <param name="itemType">The item type.</param>
         /// <returns>The <see cref="QueryResult{ServerItem}"/>.</returns>
-        private QueryResult<ServerItem> GetLatest(BaseItem parent, InternalItemsQuery query, string itemType)
+        private QueryResult<ServerItem> GetLatest(BaseItem parent, InternalItemsQuery query, BaseItemKind itemType)
         {
             query.OrderBy = Array.Empty<(string, SortOrder)>();
 
@@ -1068,7 +1056,7 @@ namespace Emby.Dlna.ContentDirectory
                 },
                 query.DtoOptions).Select(i => i.Item1 ?? i.Item2.FirstOrDefault()).Where(i => i != null).ToArray();
 
-            return ToResult(items);
+            return ToResult(query.StartIndex, items);
         }
 
         /// <summary>
@@ -1086,7 +1074,7 @@ namespace Emby.Dlna.ContentDirectory
             {
                 Recursive = true,
                 ArtistIds = new[] { item.Id },
-                IncludeItemTypes = new[] { nameof(MusicAlbum) },
+                IncludeItemTypes = new[] { BaseItemKind.MusicAlbum },
                 Limit = limit,
                 StartIndex = startIndex,
                 DtoOptions = GetDtoOptions(),
@@ -1095,7 +1083,7 @@ namespace Emby.Dlna.ContentDirectory
 
             var result = _libraryManager.GetItemsResult(query);
 
-            return ToResult(result);
+            return ToResult(startIndex, result);
         }
 
         /// <summary>
@@ -1115,8 +1103,8 @@ namespace Emby.Dlna.ContentDirectory
                 GenreIds = new[] { item.Id },
                 IncludeItemTypes = new[]
                 {
-                    nameof(Movie),
-                    nameof(Series)
+                    BaseItemKind.Movie,
+                    BaseItemKind.Series
                 },
                 Limit = limit,
                 StartIndex = startIndex,
@@ -1126,7 +1114,7 @@ namespace Emby.Dlna.ContentDirectory
 
             var result = _libraryManager.GetItemsResult(query);
 
-            return ToResult(result);
+            return ToResult(startIndex, result);
         }
 
         /// <summary>
@@ -1144,7 +1132,7 @@ namespace Emby.Dlna.ContentDirectory
             {
                 Recursive = true,
                 GenreIds = new[] { item.Id },
-                IncludeItemTypes = new[] { nameof(MusicAlbum) },
+                IncludeItemTypes = new[] { BaseItemKind.MusicAlbum },
                 Limit = limit,
                 StartIndex = startIndex,
                 DtoOptions = GetDtoOptions(),
@@ -1153,33 +1141,34 @@ namespace Emby.Dlna.ContentDirectory
 
             var result = _libraryManager.GetItemsResult(query);
 
-            return ToResult(result);
+            return ToResult(startIndex, result);
         }
 
         /// <summary>
         /// Converts <see cref="IReadOnlyCollection{BaseItem}"/> into a <see cref="QueryResult{ServerItem}"/>.
         /// </summary>
+        /// <param name="startIndex">The start index.</param>
         /// <param name="result">An array of <see cref="BaseItem"/>.</param>
         /// <returns>A <see cref="QueryResult{ServerItem}"/>.</returns>
-        private static QueryResult<ServerItem> ToResult(IReadOnlyCollection<BaseItem> result)
+        private static QueryResult<ServerItem> ToResult(int? startIndex, IReadOnlyCollection<BaseItem> result)
         {
             var serverItems = result
                 .Select(i => new ServerItem(i, null))
                 .ToArray();
 
-            return new QueryResult<ServerItem>
-            {
-                TotalRecordCount = result.Count,
-                Items = serverItems
-            };
+            return new QueryResult<ServerItem>(
+                startIndex,
+                result.Count,
+                serverItems);
         }
 
         /// <summary>
         /// Converts a <see cref="QueryResult{BaseItem}"/> to a <see cref="QueryResult{ServerItem}"/>.
         /// </summary>
+        /// <param name="startIndex">The index the result started at.</param>
         /// <param name="result">A <see cref="QueryResult{BaseItem}"/>.</param>
         /// <returns>The <see cref="QueryResult{ServerItem}"/>.</returns>
-        private static QueryResult<ServerItem> ToResult(QueryResult<BaseItem> result)
+        private static QueryResult<ServerItem> ToResult(int? startIndex, QueryResult<BaseItem> result)
         {
             var length = result.Items.Count;
             var serverItems = new ServerItem[length];
@@ -1188,32 +1177,31 @@ namespace Emby.Dlna.ContentDirectory
                 serverItems[i] = new ServerItem(result.Items[i], null);
             }
 
-            return new QueryResult<ServerItem>
-            {
-                TotalRecordCount = result.TotalRecordCount,
-                Items = serverItems
-            };
+            return new QueryResult<ServerItem>(
+                startIndex,
+                result.TotalRecordCount,
+                serverItems);
         }
 
         /// <summary>
         /// Converts a query result to a <see cref="QueryResult{ServerItem}"/>.
         /// </summary>
+        /// <param name="startIndex">The start index.</param>
         /// <param name="result">A <see cref="QueryResult{BaseItem}"/>.</param>
         /// <returns>The <see cref="QueryResult{ServerItem}"/>.</returns>
-        private static QueryResult<ServerItem> ToResult(QueryResult<(BaseItem, ItemCounts)> result)
+        private static QueryResult<ServerItem> ToResult(int? startIndex, QueryResult<(BaseItem Item, ItemCounts ItemCounts)> result)
         {
             var length = result.Items.Count;
             var serverItems = new ServerItem[length];
             for (var i = 0; i < length; i++)
             {
-                serverItems[i] = new ServerItem(result.Items[i].Item1, null);
+                serverItems[i] = new ServerItem(result.Items[i].Item, null);
             }
 
-            return new QueryResult<ServerItem>
-            {
-                TotalRecordCount = result.TotalRecordCount,
-                Items = serverItems
-            };
+            return new QueryResult<ServerItem>(
+                startIndex,
+                result.TotalRecordCount,
+                serverItems);
         }
 
         /// <summary>
@@ -1221,7 +1209,7 @@ namespace Emby.Dlna.ContentDirectory
         /// </summary>
         /// <param name="sort">The <see cref="SortCriteria"/>.</param>
         /// <param name="isPreSorted">True if pre-sorted.</param>
-        private static (string, SortOrder)[] GetOrderBy(SortCriteria sort, bool isPreSorted)
+        private static (string SortName, SortOrder SortOrder)[] GetOrderBy(SortCriteria sort, bool isPreSorted)
         {
             return isPreSorted ? Array.Empty<(string, SortOrder)>() : new[] { (ItemSortBy.SortName, sort.SortOrder) };
         }

Emby.Dlna/Didl/DidlBuilder.cs

@@ -160,7 +160,7 @@ namespace Emby.Dlna.Didl
             else
             {
                 var parent = item.DisplayParentId;
-                if (!parent.Equals(Guid.Empty))
+                if (!parent.Equals(default))
                 {
                     writer.WriteAttributeString("parentID", GetClientId(parent, null));
                 }
@@ -221,6 +221,7 @@ namespace Emby.Dlna.Didl
                 streamInfo.IsDirectStream,
                 streamInfo.RunTimeTicks ?? 0,
                 streamInfo.TargetVideoProfile,
+                streamInfo.TargetVideoRangeType,
                 streamInfo.TargetVideoLevel,
                 streamInfo.TargetFramerate ?? 0,
                 streamInfo.TargetPacketLength,
@@ -376,6 +377,7 @@ namespace Emby.Dlna.Didl
                 targetHeight,
                 streamInfo.TargetVideoBitDepth,
                 streamInfo.TargetVideoProfile,
+                streamInfo.TargetVideoRangeType,
                 streamInfo.TargetVideoLevel,
                 streamInfo.TargetFramerate ?? 0,
                 streamInfo.TargetPacketLength,
@@ -657,7 +659,7 @@ namespace Emby.Dlna.Didl
                 else
                 {
                     var parent = folder.DisplayParentId;
-                    if (parent.Equals(Guid.Empty))
+                    if (parent.Equals(default))
                     {
                         writer.WriteAttributeString("parentID", "0");
                     }
@@ -989,7 +991,7 @@ namespace Emby.Dlna.Didl
                 writer.WriteAttributeString("dlna", "profileID", NsDlna, _profile.AlbumArtPn);
             }
 
-            writer.WriteString(albumArtUrlInfo.url);
+            writer.WriteString(albumArtUrlInfo.Url);
             writer.WriteFullEndElement();
 
             // TODO: Remove these default values
@@ -998,7 +1000,7 @@ namespace Emby.Dlna.Didl
                 _profile.MaxIconWidth ?? 48,
                 _profile.MaxIconHeight ?? 48,
                 "jpg");
-            writer.WriteElementString("upnp", "icon", NsUpnp, iconUrlInfo.url);
+            writer.WriteElementString("upnp", "icon", NsUpnp, iconUrlInfo.Url);
 
             if (!_profile.EnableAlbumArtInDidl)
             {
@@ -1045,8 +1047,8 @@ namespace Emby.Dlna.Didl
 
             // Images must have a reported size or many clients (Bubble upnp), will only use the first thumbnail
             // rather than using a larger one when available
-            var width = albumartUrlInfo.width ?? maxWidth;
-            var height = albumartUrlInfo.height ?? maxHeight;
+            var width = albumartUrlInfo.Width ?? maxWidth;
+            var height = albumartUrlInfo.Height ?? maxHeight;
 
             var contentFeatures = ContentFeatureBuilder.BuildImageHeader(_profile, format, width, height, imageInfo.IsDirectStream, org_Pn);
 
@@ -1062,7 +1064,7 @@ namespace Emby.Dlna.Didl
                 "resolution",
                 string.Format(CultureInfo.InvariantCulture, "{0}x{1}", width, height));
 
-            writer.WriteString(albumartUrlInfo.url);
+            writer.WriteString(albumartUrlInfo.Url);
 
             writer.WriteFullEndElement();
         }
@@ -1200,7 +1202,7 @@ namespace Emby.Dlna.Didl
             return id;
         }
 
-        private (string url, int? width, int? height) GetImageUrl(ImageDownloadInfo info, int maxWidth, int maxHeight, string format)
+        private (string Url, int? Width, int? Height) GetImageUrl(ImageDownloadInfo info, int maxWidth, int maxHeight, string format)
         {
             var url = string.Format(
                 CultureInfo.InvariantCulture,

Emby.Dlna/Didl/Filter.cs

@@ -17,8 +17,7 @@ namespace Emby.Dlna.Didl
         public Filter(string filter)
         {
             _all = string.Equals(filter, "*", StringComparison.OrdinalIgnoreCase);
-
-            _fields = (filter ?? string.Empty).Split(',', StringSplitOptions.RemoveEmptyEntries);
+            _fields = filter.Split(',', StringSplitOptions.RemoveEmptyEntries);
         }
 
         public bool Contains(string field)

Emby.Dlna/DlnaManager.cs

@@ -5,7 +5,6 @@ using System.Globalization;
 using System.IO;
 using System.Linq;
 using System.Reflection;
-using System.Text;
 using System.Text.Json;
 using System.Text.RegularExpressions;
 using System.Threading.Tasks;
@@ -84,8 +83,7 @@ namespace Emby.Dlna
         {
             lock (_profiles)
             {
-                var list = _profiles.Values.ToList();
-                return list
+                return _profiles.Values
                     .OrderBy(i => i.Item1.Info.Type == DeviceProfileType.User ? 0 : 1)
                     .ThenBy(i => i.Item1.Info.Name)
                     .Select(i => i.Item2)
@@ -227,11 +225,8 @@ namespace Emby.Dlna
         {
             try
             {
-                var xmlFies = _fileSystem.GetFilePaths(path)
+                return _fileSystem.GetFilePaths(path)
                     .Where(i => string.Equals(Path.GetExtension(i), ".xml", StringComparison.OrdinalIgnoreCase))
-                    .ToList();
-
-                return xmlFies
                     .Select(i => ParseProfileFile(i, type))
                     .Where(i => i != null)
                     .ToList()!; // We just filtered out all the nulls
@@ -253,11 +248,8 @@ namespace Emby.Dlna
 
                 try
                 {
-                    DeviceProfile profile;
-
                     var tempProfile = (DeviceProfile)_xmlSerializer.DeserializeFromFile(typeof(DeviceProfile), path);
-
-                    profile = ReserializeProfile(tempProfile);
+                    var profile = ReserializeProfile(tempProfile);
 
                     profile.Id = path.ToLowerInvariant().GetMD5().ToString("N", CultureInfo.InvariantCulture);
 
@@ -296,8 +288,7 @@ namespace Emby.Dlna
         {
             lock (_profiles)
             {
-                var list = _profiles.Values.ToList();
-                return list
+                return _profiles.Values
                     .Select(i => i.Item1)
                     .OrderBy(i => i.Info.Type == DeviceProfileType.User ? 0 : 1)
                     .ThenBy(i => i.Info.Name);
@@ -352,7 +343,8 @@ namespace Emby.Dlna
                         var fileOptions = AsyncFile.WriteOptions;
                         fileOptions.Mode = FileMode.Create;
                         fileOptions.PreallocationSize = length;
-                        using (var fileStream = new FileStream(path, fileOptions))
+                        var fileStream = new FileStream(path, fileOptions);
+                        await using (fileStream.ConfigureAwait(false))
                         {
                             await stream.CopyToAsync(fileStream).ConfigureAwait(false);
                         }
@@ -464,7 +456,7 @@ namespace Emby.Dlna
         /// <inheritdoc />
         public string GetServerDescriptionXml(IHeaderDictionary headers, string serverUuId, string serverAddress)
         {
-            var profile = GetDefaultProfile();
+            var profile = GetProfile(headers) ?? GetDefaultProfile();
 
             var serverId = _appHost.SystemId;
 

Emby.Dlna/Emby.Dlna.csproj

@@ -22,10 +22,18 @@
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
   </PropertyGroup>
 
+  <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
+    <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
+  </PropertyGroup>
+
   <!-- Code Analyzers-->
   <ItemGroup Condition=" '$(Configuration)' == 'Debug' ">
+    <PackageReference Include="Microsoft.CodeAnalysis.BannedApiAnalyzers" Version="3.3.3">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
+    </PackageReference>
     <PackageReference Include="SerilogAnalyzer" Version="0.15.0" PrivateAssets="All" />
-    <PackageReference Include="StyleCop.Analyzers" Version="1.1.118" PrivateAssets="All" />
+    <PackageReference Include="StyleCop.Analyzers" Version="1.2.0-beta.406" PrivateAssets="All" />
     <PackageReference Include="SmartAnalyzers.MultithreadingAnalyzer" Version="1.1.31" PrivateAssets="All" />
   </ItemGroup>
 

Emby.Dlna/Main/DlnaEntryPoint.cs

@@ -313,7 +313,7 @@ namespace Emby.Dlna.Main
 
                 _logger.LogInformation("Registering publisher for {ResourceName} on {DeviceAddress}", fullService, address);
 
-                var uri = new UriBuilder(_appHost.GetApiUrlForLocalAccess(false) + descriptorUri);
+                var uri = new UriBuilder(_appHost.GetApiUrlForLocalAccess(address, false) + descriptorUri);
 
                 var device = new SsdpRootDevice
                 {
@@ -362,7 +362,7 @@ namespace Emby.Dlna.Main
                 guid = text.GetMD5();
             }
 
-            return guid.ToString("N", CultureInfo.InvariantCulture);
+            return guid.ToString("D", CultureInfo.InvariantCulture);
         }
 
         private void SetProperies(SsdpDevice device, string fullDeviceType)

Emby.Dlna/PlayTo/Device.cs

@@ -69,11 +69,11 @@ namespace Emby.Dlna.PlayTo
 
         public TransportState TransportState { get; private set; }
 
-        public bool IsPlaying => TransportState == TransportState.Playing;
+        public bool IsPlaying => TransportState == TransportState.PLAYING;
 
-        public bool IsPaused => TransportState == TransportState.Paused || TransportState == TransportState.PausedPlayback;
+        public bool IsPaused => TransportState == TransportState.PAUSED_PLAYBACK;
 
-        public bool IsStopped => TransportState == TransportState.Stopped;
+        public bool IsStopped => TransportState == TransportState.STOPPED;
 
         public Action OnDeviceUnavailable { get; set; }
 
@@ -494,7 +494,7 @@ namespace Emby.Dlna.PlayTo
                     cancellationToken: cancellationToken)
                 .ConfigureAwait(false);
 
-            TransportState = TransportState.Paused;
+            TransportState = TransportState.PAUSED_PLAYBACK;
 
             RestartTimer(true);
         }
@@ -527,7 +527,7 @@ namespace Emby.Dlna.PlayTo
                 if (transportState.HasValue)
                 {
                     // If we're not playing anything no need to get additional data
-                    if (transportState.Value == TransportState.Stopped)
+                    if (transportState.Value == TransportState.STOPPED)
                     {
                         UpdateMediaInfo(null, transportState.Value);
                     }
@@ -535,9 +535,9 @@ namespace Emby.Dlna.PlayTo
                     {
                         var tuple = await GetPositionInfo(avCommands, cancellationToken).ConfigureAwait(false);
 
-                        var currentObject = tuple.Item2;
+                        var currentObject = tuple.Track;
 
-                        if (tuple.Item1 && currentObject == null)
+                        if (tuple.Success && currentObject == null)
                         {
                             currentObject = await GetMediaInfo(avCommands, cancellationToken).ConfigureAwait(false);
                         }
@@ -556,7 +556,7 @@ namespace Emby.Dlna.PlayTo
                     }
 
                     // If we're not playing anything make sure we don't get data more often than necessary to keep the Session alive
-                    if (transportState.Value == TransportState.Stopped)
+                    if (transportState.Value == TransportState.STOPPED)
                     {
                         RestartTimerInactive();
                     }
@@ -797,7 +797,7 @@ namespace Emby.Dlna.PlayTo
             return null;
         }
 
-        private async Task<(bool, UBaseObject)> GetPositionInfo(TransportCommands avCommands, CancellationToken cancellationToken)
+        private async Task<(bool Success, UBaseObject Track)> GetPositionInfo(TransportCommands avCommands, CancellationToken cancellationToken)
         {
             var command = avCommands.ServiceActions.FirstOrDefault(c => c.Name == "GetPositionInfo");
             if (command == null)
@@ -1179,6 +1179,7 @@ namespace Emby.Dlna.PlayTo
             return new Device(deviceProperties, httpClientFactory, logger);
         }
 
+#nullable enable
         private static DeviceIcon CreateIcon(XElement element)
         {
             if (element == null)
@@ -1186,69 +1187,61 @@ namespace Emby.Dlna.PlayTo
                 throw new ArgumentNullException(nameof(element));
             }
 
-            var mimeType = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("mimetype"));
             var width = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("width"));
             var height = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("height"));
-            var depth = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("depth"));
-            var url = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("url"));
 
-            var widthValue = int.Parse(width, NumberStyles.Integer, CultureInfo.InvariantCulture);
-            var heightValue = int.Parse(height, NumberStyles.Integer, CultureInfo.InvariantCulture);
+            _ = int.TryParse(width, NumberStyles.Integer, CultureInfo.InvariantCulture, out var widthValue);
+            _ = int.TryParse(height, NumberStyles.Integer, CultureInfo.InvariantCulture, out var heightValue);
 
             return new DeviceIcon
             {
-                Depth = depth,
+                Depth = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("depth")) ?? string.Empty,
                 Height = heightValue,
-                MimeType = mimeType,
-                Url = url,
+                MimeType = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("mimetype")) ?? string.Empty,
+                Url = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("url")) ?? string.Empty,
                 Width = widthValue
             };
         }
 
         private static DeviceService Create(XElement element)
-        {
-            var type = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("serviceType"));
-            var id = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("serviceId"));
-            var scpdUrl = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("SCPDURL"));
-            var controlURL = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("controlURL"));
-            var eventSubURL = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("eventSubURL"));
-
-            return new DeviceService
+            => new DeviceService()
             {
-                ControlUrl = controlURL,
-                EventSubUrl = eventSubURL,
-                ScpdUrl = scpdUrl,
-                ServiceId = id,
-                ServiceType = type
+                ControlUrl = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("controlURL")) ?? string.Empty,
+                EventSubUrl = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("eventSubURL")) ?? string.Empty,
+                ScpdUrl = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("SCPDURL")) ?? string.Empty,
+                ServiceId = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("serviceId")) ?? string.Empty,
+                ServiceType = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("serviceType")) ?? string.Empty
             };
-        }
 
-        private void UpdateMediaInfo(UBaseObject mediaInfo, TransportState state)
+        private void UpdateMediaInfo(UBaseObject? mediaInfo, TransportState state)
         {
             TransportState = state;
 
             var previousMediaInfo = CurrentMediaInfo;
             CurrentMediaInfo = mediaInfo;
 
-            if (previousMediaInfo == null && mediaInfo != null)
+            if (mediaInfo == null)
             {
-                if (state != TransportState.Stopped)
+                if (previousMediaInfo != null)
+                {
+                    OnPlaybackStop(previousMediaInfo);
+                }
+            }
+            else if (previousMediaInfo == null)
+            {
+                if (state != TransportState.STOPPED)
                 {
                     OnPlaybackStart(mediaInfo);
                 }
             }
-            else if (mediaInfo != null && previousMediaInfo != null && !mediaInfo.Equals(previousMediaInfo))
-            {
-                OnMediaChanged(previousMediaInfo, mediaInfo);
-            }
-            else if (mediaInfo == null && previousMediaInfo != null)
-            {
-                OnPlaybackStop(previousMediaInfo);
-            }
-            else if (mediaInfo != null && mediaInfo.Equals(previousMediaInfo))
+            else if (mediaInfo.Equals(previousMediaInfo))
             {
                 OnPlaybackProgress(mediaInfo);
             }
+            else
+            {
+                OnMediaChanged(previousMediaInfo, mediaInfo);
+            }
         }
 
         private void OnPlaybackStart(UBaseObject mediaInfo)

Emby.Dlna/PlayTo/PlayToController.cs

@@ -174,13 +174,13 @@ namespace Emby.Dlna.PlayTo
                 await _sessionManager.OnPlaybackStart(newItemProgress).ConfigureAwait(false);
 
                 // Send a message to the DLNA device to notify what is the next track in the playlist.
-                var currentItemIndex = _playlist.FindIndex(item => item.StreamInfo.ItemId == streamInfo.ItemId);
+                var currentItemIndex = _playlist.FindIndex(item => item.StreamInfo.ItemId.Equals(streamInfo.ItemId));
                 if (currentItemIndex >= 0)
                 {
                     _currentPlaylistIndex = currentItemIndex;
                 }
 
-                await SendNextTrackMessage(currentItemIndex, CancellationToken.None);
+                await SendNextTrackMessage(currentItemIndex, CancellationToken.None).ConfigureAwait(false);
             }
             catch (Exception ex)
             {
@@ -210,9 +210,9 @@ namespace Emby.Dlna.PlayTo
 
                 var mediaSource = await streamInfo.GetMediaSource(CancellationToken.None).ConfigureAwait(false);
 
-                var duration = mediaSource == null ?
-                    (_device.Duration == null ? (long?)null : _device.Duration.Value.Ticks) :
-                    mediaSource.RunTimeTicks;
+                var duration = mediaSource == null
+                    ? _device.Duration?.Ticks
+                    : mediaSource.RunTimeTicks;
 
                 var playedToCompletion = positionTicks.HasValue && positionTicks.Value == 0;
 
@@ -349,7 +349,9 @@ namespace Emby.Dlna.PlayTo
         {
             _logger.LogDebug("{0} - Received PlayRequest: {1}", _session.DeviceName, command.PlayCommand);
 
-            var user = command.ControllingUserId.Equals(Guid.Empty) ? null : _userManager.GetUserById(command.ControllingUserId);
+            var user = command.ControllingUserId.Equals(default)
+                ? null :
+                _userManager.GetUserById(command.ControllingUserId);
 
             var items = new List<BaseItem>();
             foreach (var id in command.ItemIds)
@@ -392,7 +394,7 @@ namespace Emby.Dlna.PlayTo
                 _playlist.AddRange(playlist);
             }
 
-            if (!command.ControllingUserId.Equals(Guid.Empty))
+            if (!command.ControllingUserId.Equals(default))
             {
                 _sessionManager.LogSessionActivity(
                     _session.Client,
@@ -446,14 +448,16 @@ namespace Emby.Dlna.PlayTo
 
                 if (info.Item != null && !EnableClientSideSeek(info))
                 {
-                    var user = !_session.UserId.Equals(Guid.Empty) ? _userManager.GetUserById(_session.UserId) : null;
+                    var user = _session.UserId.Equals(default)
+                        ? null
+                        : _userManager.GetUserById(_session.UserId);
                     var newItem = CreatePlaylistItem(info.Item, user, newPosition, info.MediaSourceId, info.AudioStreamIndex, info.SubtitleStreamIndex);
 
                     await _device.SetAvTransport(newItem.StreamUrl, GetDlnaHeaders(newItem), newItem.Didl, CancellationToken.None).ConfigureAwait(false);
 
                     // Send a message to the DLNA device to notify what is the next track in the play list.
                     var newItemIndex = _playlist.FindIndex(item => item.StreamUrl == newItem.StreamUrl);
-                    await SendNextTrackMessage(newItemIndex, CancellationToken.None);
+                    await SendNextTrackMessage(newItemIndex, CancellationToken.None).ConfigureAwait(false);
 
                     return;
                 }
@@ -557,6 +561,7 @@ namespace Emby.Dlna.PlayTo
                         streamInfo.IsDirectStream,
                         streamInfo.RunTimeTicks ?? 0,
                         streamInfo.TargetVideoProfile,
+                        streamInfo.TargetVideoRangeType,
                         streamInfo.TargetVideoLevel,
                         streamInfo.TargetFramerate ?? 0,
                         streamInfo.TargetPacketLength,
@@ -569,7 +574,7 @@ namespace Emby.Dlna.PlayTo
                         streamInfo.TargetVideoCodecTag,
                         streamInfo.IsTargetAVC);
 
-                return list.Count == 0 ? null : list[0];
+                return list.FirstOrDefault();
             }
 
             return null;
@@ -654,7 +659,7 @@ namespace Emby.Dlna.PlayTo
             await _device.SetAvTransport(currentitem.StreamUrl, GetDlnaHeaders(currentitem), currentitem.Didl, cancellationToken).ConfigureAwait(false);
 
             // Send a message to the DLNA device to notify what is the next track in the play list.
-            await SendNextTrackMessage(index, cancellationToken);
+            await SendNextTrackMessage(index, cancellationToken).ConfigureAwait(false);
 
             var streamInfo = currentitem.StreamInfo;
             if (streamInfo.StartPositionTicks > 0 && EnableClientSideSeek(streamInfo))
@@ -764,14 +769,16 @@ namespace Emby.Dlna.PlayTo
                 {
                     var newPosition = GetProgressPositionTicks(info) ?? 0;
 
-                    var user = !_session.UserId.Equals(Guid.Empty) ? _userManager.GetUserById(_session.UserId) : null;
+                    var user = _session.UserId.Equals(default)
+                        ? null
+                        : _userManager.GetUserById(_session.UserId);
                     var newItem = CreatePlaylistItem(info.Item, user, newPosition, info.MediaSourceId, newIndex, info.SubtitleStreamIndex);
 
                     await _device.SetAvTransport(newItem.StreamUrl, GetDlnaHeaders(newItem), newItem.Didl, CancellationToken.None).ConfigureAwait(false);
 
                     // Send a message to the DLNA device to notify what is the next track in the play list.
                     var newItemIndex = _playlist.FindIndex(item => item.StreamUrl == newItem.StreamUrl);
-                    await SendNextTrackMessage(newItemIndex, CancellationToken.None);
+                    await SendNextTrackMessage(newItemIndex, CancellationToken.None).ConfigureAwait(false);
 
                     if (EnableClientSideSeek(newItem.StreamInfo))
                     {
@@ -793,14 +800,16 @@ namespace Emby.Dlna.PlayTo
                 {
                     var newPosition = GetProgressPositionTicks(info) ?? 0;
 
-                    var user = !_session.UserId.Equals(Guid.Empty) ? _userManager.GetUserById(_session.UserId) : null;
+                    var user = _session.UserId.Equals(default)
+                        ? null
+                        : _userManager.GetUserById(_session.UserId);
                     var newItem = CreatePlaylistItem(info.Item, user, newPosition, info.MediaSourceId, info.AudioStreamIndex, newIndex);
 
                     await _device.SetAvTransport(newItem.StreamUrl, GetDlnaHeaders(newItem), newItem.Didl, CancellationToken.None).ConfigureAwait(false);
 
                     // Send a message to the DLNA device to notify what is the next track in the play list.
                     var newItemIndex = _playlist.FindIndex(item => item.StreamUrl == newItem.StreamUrl);
-                    await SendNextTrackMessage(newItemIndex, CancellationToken.None);
+                    await SendNextTrackMessage(newItemIndex, CancellationToken.None).ConfigureAwait(false);
 
                     if (EnableClientSideSeek(newItem.StreamInfo) && newPosition > 0)
                     {
@@ -816,7 +825,7 @@ namespace Emby.Dlna.PlayTo
             const int Interval = 500;
 
             var currentWait = 0;
-            while (_device.TransportState != TransportState.Playing && currentWait < MaxWait)
+            while (_device.TransportState != TransportState.PLAYING && currentWait < MaxWait)
             {
                 await Task.Delay(Interval, cancellationToken).ConfigureAwait(false);
                 currentWait += Interval;
@@ -883,7 +892,7 @@ namespace Emby.Dlna.PlayTo
 
         private class StreamParams
         {
-            private MediaSourceInfo mediaSource;
+            private MediaSourceInfo _mediaSource;
             private IMediaSourceManager _mediaSourceManager;
 
             public Guid ItemId { get; set; }
@@ -908,24 +917,22 @@ namespace Emby.Dlna.PlayTo
 
             public async Task<MediaSourceInfo> GetMediaSource(CancellationToken cancellationToken)
             {
-                if (mediaSource != null)
+                if (_mediaSource != null)
                 {
-                    return mediaSource;
+                    return _mediaSource;
                 }
 
-                var hasMediaSources = Item as IHasMediaSources;
-
-                if (hasMediaSources == null)
+                if (Item is not IHasMediaSources)
                 {
                     return null;
                 }
 
                 if (_mediaSourceManager != null)
                 {
-                    mediaSource = await _mediaSourceManager.GetMediaSource(Item, MediaSourceId, LiveStreamId, false, cancellationToken).ConfigureAwait(false);
+                    _mediaSource = await _mediaSourceManager.GetMediaSource(Item, MediaSourceId, LiveStreamId, false, cancellationToken).ConfigureAwait(false);
                 }
 
-                return mediaSource;
+                return _mediaSource;
             }
 
             private static Guid GetItemId(string url)
@@ -951,7 +958,7 @@ namespace Emby.Dlna.PlayTo
                     }
                 }
 
-                return Guid.Empty;
+                return default;
             }
 
             public static StreamParams ParseFromUrl(string url, ILibraryManager libraryManager, IMediaSourceManager mediaSourceManager)
@@ -966,7 +973,7 @@ namespace Emby.Dlna.PlayTo
                     ItemId = GetItemId(url)
                 };
 
-                if (request.ItemId.Equals(Guid.Empty))
+                if (request.ItemId.Equals(default))
                 {
                     return request;
                 }

Emby.Dlna/PlayTo/TransportCommands.cs

@@ -175,7 +175,7 @@ namespace Emby.Dlna.PlayTo
                 var sendValue = state.AllowedValues.FirstOrDefault(a => string.Equals(a, commandParameter, StringComparison.OrdinalIgnoreCase)) ??
                     (state.AllowedValues.Count > 0 ? state.AllowedValues[0] : value);
 
-                return string.Format(CultureInfo.InvariantCulture, "<{0} xmlns:dt=\"urn:schemas-microsoft-com:datatypes\" dt:dt=\"{1}\">{2}</{0}>", argument.Name, state.DataType ?? "string", sendValue);
+                return string.Format(CultureInfo.InvariantCulture, "<{0} xmlns:dt=\"urn:schemas-microsoft-com:datatypes\" dt:dt=\"{1}\">{2}</{0}>", argument.Name, state.DataType, sendValue);
             }
 
             return string.Format(CultureInfo.InvariantCulture, "<{0}>{1}</{0}>", argument.Name, value);

Emby.Dlna/PlayTo/TransportState.cs

@@ -2,12 +2,15 @@
 
 namespace Emby.Dlna.PlayTo
 {
+    /// <summary>
+    /// Core of the AVTransport service. It defines the conceptually top-
+    /// level state of the transport, for example, whether it is playing, recording, etc.
+    /// </summary>
     public enum TransportState
     {
-        Stopped,
-        Playing,
-        Transitioning,
-        PausedPlayback,
-        Paused
+        STOPPED,
+        PLAYING,
+        TRANSITIONING,
+        PAUSED_PLAYBACK
     }
 }

Emby.Dlna/Profiles/DefaultProfile.cs

@@ -167,8 +167,7 @@ namespace Emby.Dlna.Profiles
 
         public void AddXmlRootAttribute(string name, string value)
         {
-            var atts = XmlRootAttributes ?? System.Array.Empty<XmlAttribute>();
-            var list = atts.ToList();
+            var list = XmlRootAttributes.ToList();
 
             list.Add(new XmlAttribute
             {

Emby.Dlna/Server/DescriptionXmlBuilder.cs

@@ -189,7 +189,7 @@ namespace Emby.Dlna.Server
                 builder.Append("<icon>");
 
                 builder.Append("<mimetype>")
-                    .Append(SecurityElement.Escape(icon.MimeType ?? string.Empty))
+                    .Append(SecurityElement.Escape(icon.MimeType))
                     .Append("</mimetype>");
                 builder.Append("<width>")
                     .Append(SecurityElement.Escape(icon.Width.ToString(CultureInfo.InvariantCulture)))
@@ -198,7 +198,7 @@ namespace Emby.Dlna.Server
                     .Append(SecurityElement.Escape(icon.Height.ToString(CultureInfo.InvariantCulture)))
                     .Append("</height>");
                 builder.Append("<depth>")
-                    .Append(SecurityElement.Escape(icon.Depth ?? string.Empty))
+                    .Append(SecurityElement.Escape(icon.Depth))
                     .Append("</depth>");
                 builder.Append("<url>")
                     .Append(BuildUrl(icon.Url))
@@ -219,10 +219,10 @@ namespace Emby.Dlna.Server
                 builder.Append("<service>");
 
                 builder.Append("<serviceType>")
-                    .Append(SecurityElement.Escape(service.ServiceType ?? string.Empty))
+                    .Append(SecurityElement.Escape(service.ServiceType))
                     .Append("</serviceType>");
                 builder.Append("<serviceId>")
-                    .Append(SecurityElement.Escape(service.ServiceId ?? string.Empty))
+                    .Append(SecurityElement.Escape(service.ServiceId))
                     .Append("</serviceId>");
                 builder.Append("<SCPDURL>")
                     .Append(BuildUrl(service.ScpdUrl))

Emby.Dlna/Service/BaseControlHandler.cs

@@ -6,8 +6,8 @@ using System.IO;
 using System.Text;
 using System.Threading.Tasks;
 using System.Xml;
-using Diacritics.Extensions;
 using Emby.Dlna.Didl;
+using Jellyfin.Extensions;
 using MediaBrowser.Controller.Configuration;
 using Microsoft.Extensions.Logging;
 
@@ -47,7 +47,7 @@ namespace Emby.Dlna.Service
 
         private async Task<ControlResponse> ProcessControlRequestInternalAsync(ControlRequest request)
         {
-            ControlRequestInfo? requestInfo = null;
+            ControlRequestInfo requestInfo;
 
             using (var streamReader = new StreamReader(request.InputXml, Encoding.UTF8))
             {
@@ -66,6 +66,11 @@ namespace Emby.Dlna.Service
 
             Logger.LogDebug("Received control request {LocalName}, params: {@Headers}", requestInfo.LocalName, requestInfo.Headers);
 
+            return CreateControlResponse(requestInfo);
+        }
+
+        private ControlResponse CreateControlResponse(ControlRequestInfo requestInfo)
+        {
             var settings = new XmlWriterSettings
             {
                 Encoding = Encoding.UTF8,
@@ -112,29 +117,19 @@ namespace Emby.Dlna.Service
             {
                 if (reader.NodeType == XmlNodeType.Element)
                 {
-                    switch (reader.LocalName)
+                    if (string.Equals(reader.LocalName, "Body", StringComparison.Ordinal))
                     {
-                        case "Body":
-                            {
-                                if (!reader.IsEmptyElement)
-                                {
-                                    using var subReader = reader.ReadSubtree();
-                                    return await ParseBodyTagAsync(subReader).ConfigureAwait(false);
-                                }
-                                else
-                                {
-                                    await reader.ReadAsync().ConfigureAwait(false);
-                                }
+                        if (reader.IsEmptyElement)
+                        {
+                            await reader.ReadAsync().ConfigureAwait(false);
+                            continue;
+                        }
 
-                                break;
-                            }
-
-                        default:
-                            {
-                                await reader.SkipAsync().ConfigureAwait(false);
-                                break;
-                            }
+                        using var subReader = reader.ReadSubtree();
+                        return await ParseBodyTagAsync(subReader).ConfigureAwait(false);
                     }
+
+                    await reader.SkipAsync().ConfigureAwait(false);
                 }
                 else
                 {
@@ -160,17 +155,17 @@ namespace Emby.Dlna.Service
                     localName = reader.LocalName;
                     namespaceURI = reader.NamespaceURI;
 
-                    if (!reader.IsEmptyElement)
+                    if (reader.IsEmptyElement)
+                    {
+                        await reader.ReadAsync().ConfigureAwait(false);
+                    }
+                    else
                     {
                         var result = new ControlRequestInfo(localName, namespaceURI);
                         using var subReader = reader.ReadSubtree();
                         await ParseFirstBodyChildAsync(subReader, result.Headers).ConfigureAwait(false);
                         return result;
                     }
-                    else
-                    {
-                        await reader.ReadAsync().ConfigureAwait(false);
-                    }
                 }
                 else
                 {

Emby.Dlna/Service/ServiceXmlBuilder.cs

@@ -38,7 +38,7 @@ namespace Emby.Dlna.Service
                 builder.Append("<action>");
 
                 builder.Append("<name>")
-                    .Append(SecurityElement.Escape(item.Name ?? string.Empty))
+                    .Append(SecurityElement.Escape(item.Name))
                     .Append("</name>");
 
                 builder.Append("<argumentList>");
@@ -48,13 +48,13 @@ namespace Emby.Dlna.Service
                     builder.Append("<argument>");
 
                     builder.Append("<name>")
-                        .Append(SecurityElement.Escape(argument.Name ?? string.Empty))
+                        .Append(SecurityElement.Escape(argument.Name))
                         .Append("</name>");
                     builder.Append("<direction>")
-                        .Append(SecurityElement.Escape(argument.Direction ?? string.Empty))
+                        .Append(SecurityElement.Escape(argument.Direction))
                         .Append("</direction>");
                     builder.Append("<relatedStateVariable>")
-                        .Append(SecurityElement.Escape(argument.RelatedStateVariable ?? string.Empty))
+                        .Append(SecurityElement.Escape(argument.RelatedStateVariable))
                         .Append("</relatedStateVariable>");
 
                     builder.Append("</argument>");
@@ -81,10 +81,10 @@ namespace Emby.Dlna.Service
                     .Append("\">");
 
                 builder.Append("<name>")
-                    .Append(SecurityElement.Escape(item.Name ?? string.Empty))
+                    .Append(SecurityElement.Escape(item.Name))
                     .Append("</name>");
                 builder.Append("<dataType>")
-                    .Append(SecurityElement.Escape(item.DataType ?? string.Empty))
+                    .Append(SecurityElement.Escape(item.DataType))
                     .Append("</dataType>");
 
                 if (item.AllowedValues.Count > 0)

Emby.Drawing/Emby.Drawing.csproj

@@ -11,6 +11,10 @@
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
   </PropertyGroup>
 
+  <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
+    <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
+  </PropertyGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\MediaBrowser.Model\MediaBrowser.Model.csproj" />
     <ProjectReference Include="..\MediaBrowser.Controller\MediaBrowser.Controller.csproj" />
@@ -23,8 +27,12 @@
 
   <!-- Code analysers-->
   <ItemGroup Condition=" '$(Configuration)' == 'Debug' ">
+    <PackageReference Include="Microsoft.CodeAnalysis.BannedApiAnalyzers" Version="3.3.3">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
+    </PackageReference>
     <PackageReference Include="SerilogAnalyzer" Version="0.15.0" PrivateAssets="All" />
-    <PackageReference Include="StyleCop.Analyzers" Version="1.1.118" PrivateAssets="All" />
+    <PackageReference Include="StyleCop.Analyzers" Version="1.2.0-beta.406" PrivateAssets="All" />
     <PackageReference Include="SmartAnalyzers.MultithreadingAnalyzer" Version="1.1.31" PrivateAssets="All" />
   </ItemGroup>
 

Emby.Drawing/ImageProcessor.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Globalization;
 using System.IO;
 using System.Linq;
+using System.Net.Mime;
 using System.Text;
 using System.Threading.Tasks;
 using Jellyfin.Data.Entities;
@@ -101,8 +102,7 @@ namespace Emby.Drawing
         public async Task ProcessImage(ImageProcessingOptions options, Stream toStream)
         {
             var file = await ProcessImage(options).ConfigureAwait(false);
-
-            using (var fileStream = AsyncFile.OpenRead(file.Item1))
+            using (var fileStream = AsyncFile.OpenRead(file.Path))
             {
                 await fileStream.CopyToAsync(toStream).ConfigureAwait(false);
             }
@@ -117,7 +117,7 @@ namespace Emby.Drawing
             => _transparentImageTypes.Contains(Path.GetExtension(path));
 
         /// <inheritdoc />
-        public async Task<(string path, string? mimeType, DateTime dateModified)> ProcessImage(ImageProcessingOptions options)
+        public async Task<(string Path, string? MimeType, DateTime DateModified)> ProcessImage(ImageProcessingOptions options)
         {
             ItemImageInfo originalImage = options.Image;
             BaseItem item = options.Item;
@@ -130,20 +130,22 @@ namespace Emby.Drawing
                 originalImageSize = new ImageDimensions(originalImage.Width, originalImage.Height);
             }
 
+            var mimeType = MimeTypes.GetMimeType(originalImagePath);
             if (!_imageEncoder.SupportsImageEncoding)
             {
-                return (originalImagePath, MimeTypes.GetMimeType(originalImagePath), dateModified);
+                return (originalImagePath, mimeType, dateModified);
             }
 
             var supportedImageInfo = await GetSupportedImage(originalImagePath, dateModified).ConfigureAwait(false);
-            originalImagePath = supportedImageInfo.path;
+            originalImagePath = supportedImageInfo.Path;
 
-            if (!File.Exists(originalImagePath))
+            // Original file doesn't exist, or original file is gif.
+            if (!File.Exists(originalImagePath) || string.Equals(mimeType, MediaTypeNames.Image.Gif, StringComparison.OrdinalIgnoreCase))
             {
-                return (originalImagePath, MimeTypes.GetMimeType(originalImagePath), dateModified);
+                return (originalImagePath, mimeType, dateModified);
             }
 
-            dateModified = supportedImageInfo.dateModified;
+            dateModified = supportedImageInfo.DateModified;
             bool requiresTransparency = _transparentImageTypes.Contains(Path.GetExtension(originalImagePath));
 
             bool autoOrient = false;
@@ -243,7 +245,7 @@ namespace Emby.Drawing
             return ImageFormat.Jpg;
         }
 
-        private string? GetMimeType(ImageFormat format, string path)
+        private string GetMimeType(ImageFormat format, string path)
             => format switch
             {
                 ImageFormat.Bmp => MimeTypes.GetMimeType("i.bmp"),
@@ -393,7 +395,13 @@ namespace Emby.Drawing
         public string GetImageBlurHash(string path)
         {
             var size = GetImageDimensions(path);
-            if (size.Width <= 0 || size.Height <= 0)
+            return GetImageBlurHash(path, size);
+        }
+
+        /// <inheritdoc />
+        public string GetImageBlurHash(string path, ImageDimensions imageDimensions)
+        {
+            if (imageDimensions.Width <= 0 || imageDimensions.Height <= 0)
             {
                 return string.Empty;
             }
@@ -401,8 +409,8 @@ namespace Emby.Drawing
             // We want tiles to be as close to square as possible, and to *mostly* keep under 16 tiles for performance.
             // One tile is (width / xComp) x (height / yComp) pixels, which means that ideally yComp = xComp * height / width.
             // See more at https://github.com/woltapp/blurhash/#how-do-i-pick-the-number-of-x-and-y-components
-            float xCompF = MathF.Sqrt(16.0f * size.Width / size.Height);
-            float yCompF = xCompF * size.Height / size.Width;
+            float xCompF = MathF.Sqrt(16.0f * imageDimensions.Width / imageDimensions.Height);
+            float yCompF = xCompF * imageDimensions.Height / imageDimensions.Width;
 
             int xComp = Math.Min((int)xCompF + 1, 9);
             int yComp = Math.Min((int)yCompF + 1, 9);
@@ -437,47 +445,46 @@ namespace Emby.Drawing
                 .ToString("N", CultureInfo.InvariantCulture);
         }
 
-        private async Task<(string path, DateTime dateModified)> GetSupportedImage(string originalImagePath, DateTime dateModified)
+        private Task<(string Path, DateTime DateModified)> GetSupportedImage(string originalImagePath, DateTime dateModified)
         {
-            var inputFormat = Path.GetExtension(originalImagePath)
-                .TrimStart('.')
-                .Replace("jpeg", "jpg", StringComparison.OrdinalIgnoreCase);
+            var inputFormat = Path.GetExtension(originalImagePath.AsSpan()).TrimStart('.').ToString();
 
             // These are just jpg files renamed as tbn
             if (string.Equals(inputFormat, "tbn", StringComparison.OrdinalIgnoreCase))
             {
-                return (originalImagePath, dateModified);
+                return Task.FromResult((originalImagePath, dateModified));
             }
 
-            if (!_imageEncoder.SupportedInputFormats.Contains(inputFormat))
-            {
-                try
-                {
-                    string filename = (originalImagePath + dateModified.Ticks.ToString(CultureInfo.InvariantCulture)).GetMD5().ToString("N", CultureInfo.InvariantCulture);
+            // TODO _mediaEncoder.ConvertImage is not implemented
+            // if (!_imageEncoder.SupportedInputFormats.Contains(inputFormat))
+            // {
+            //     try
+            //     {
+            //         string filename = (originalImagePath + dateModified.Ticks.ToString(CultureInfo.InvariantCulture)).GetMD5().ToString("N", CultureInfo.InvariantCulture);
+            //
+            //         string cacheExtension = _mediaEncoder.SupportsEncoder("libwebp") ? ".webp" : ".png";
+            //         var outputPath = Path.Combine(_appPaths.ImageCachePath, "converted-images", filename + cacheExtension);
+            //
+            //         var file = _fileSystem.GetFileInfo(outputPath);
+            //         if (!file.Exists)
+            //         {
+            //             await _mediaEncoder.ConvertImage(originalImagePath, outputPath).ConfigureAwait(false);
+            //             dateModified = _fileSystem.GetLastWriteTimeUtc(outputPath);
+            //         }
+            //         else
+            //         {
+            //             dateModified = file.LastWriteTimeUtc;
+            //         }
+            //
+            //         originalImagePath = outputPath;
+            //     }
+            //     catch (Exception ex)
+            //     {
+            //         _logger.LogError(ex, "Image conversion failed for {Path}", originalImagePath);
+            //     }
+            // }
 
-                    string cacheExtension = _mediaEncoder.SupportsEncoder("libwebp") ? ".webp" : ".png";
-                    var outputPath = Path.Combine(_appPaths.ImageCachePath, "converted-images", filename + cacheExtension);
-
-                    var file = _fileSystem.GetFileInfo(outputPath);
-                    if (!file.Exists)
-                    {
-                        await _mediaEncoder.ConvertImage(originalImagePath, outputPath).ConfigureAwait(false);
-                        dateModified = _fileSystem.GetLastWriteTimeUtc(outputPath);
-                    }
-                    else
-                    {
-                        dateModified = file.LastWriteTimeUtc;
-                    }
-
-                    originalImagePath = outputPath;
-                }
-                catch (Exception ex)
-                {
-                    _logger.LogError(ex, "Image conversion failed for {Path}", originalImagePath);
-                }
-            }
-
-            return (originalImagePath, dateModified);
+            return Task.FromResult((originalImagePath, dateModified));
         }
 
         /// <summary>

Emby.Drawing/NullImageEncoder.cs

@@ -43,6 +43,12 @@ namespace Emby.Drawing
             throw new NotImplementedException();
         }
 
+        /// <inheritdoc />
+        public void CreateSplashscreen(IReadOnlyList<string> posters, IReadOnlyList<string> backdrops)
+        {
+            throw new NotImplementedException();
+        }
+
         /// <inheritdoc />
         public string GetImageBlurHash(int xComp, int yComp, string path)
         {

Emby.Naming/AudioBook/AudioBookListResolver.cs

@@ -14,6 +14,7 @@ namespace Emby.Naming.AudioBook
     public class AudioBookListResolver
     {
         private readonly NamingOptions _options;
+        private readonly AudioBookResolver _audioBookResolver;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="AudioBookListResolver"/> class.
@@ -22,6 +23,7 @@ namespace Emby.Naming.AudioBook
         public AudioBookListResolver(NamingOptions options)
         {
             _options = options;
+            _audioBookResolver = new AudioBookResolver(_options);
         }
 
         /// <summary>
@@ -31,21 +33,18 @@ namespace Emby.Naming.AudioBook
         /// <returns>Returns IEnumerable of <see cref="AudioBookInfo"/>.</returns>
         public IEnumerable<AudioBookInfo> Resolve(IEnumerable<FileSystemMetadata> files)
         {
-            var audioBookResolver = new AudioBookResolver(_options);
-
             // File with empty fullname will be sorted out here.
             var audiobookFileInfos = files
-                .Select(i => audioBookResolver.Resolve(i.FullName))
+                .Select(i => _audioBookResolver.Resolve(i.FullName))
                 .OfType<AudioBookFileInfo>()
                 .ToList();
 
-            var stackResult = new StackResolver(_options)
-                .ResolveAudioBooks(audiobookFileInfos);
+            var stackResult = StackResolver.ResolveAudioBooks(audiobookFileInfos);
 
             foreach (var stack in stackResult)
             {
                 var stackFiles = stack.Files
-                    .Select(i => audioBookResolver.Resolve(i))
+                    .Select(i => _audioBookResolver.Resolve(i))
                     .OfType<AudioBookFileInfo>()
                     .ToList();
 

Emby.Naming/AudioBook/AudioBookResolver.cs

@@ -1,7 +1,7 @@
 using System;
 using System.IO;
-using System.Linq;
 using Emby.Naming.Common;
+using Jellyfin.Extensions;
 
 namespace Emby.Naming.AudioBook
 {
@@ -37,7 +37,7 @@ namespace Emby.Naming.AudioBook
             var extension = Path.GetExtension(path);
 
             // Check supported extensions
-            if (!_options.AudioFileExtensions.Contains(extension, StringComparer.OrdinalIgnoreCase))
+            if (!_options.AudioFileExtensions.Contains(extension, StringComparison.OrdinalIgnoreCase))
             {
                 return null;
             }

Emby.Naming/Common/NamingOptions.cs

@@ -1,6 +1,7 @@
 #pragma warning disable CA1819
 
 using System;
+using System.Collections.Generic;
 using System.Linq;
 using System.Text.RegularExpressions;
 using Emby.Naming.Video;
@@ -22,47 +23,60 @@ namespace Emby.Naming.Common
         {
             VideoFileExtensions = new[]
             {
-                ".m4v",
+                ".001",
+                ".3g2",
                 ".3gp",
-                ".nsv",
-                ".ts",
-                ".ty",
-                ".strm",
-                ".rm",
-                ".rmvb",
-                ".ifo",
-                ".mov",
-                ".qt",
-                ".divx",
-                ".xvid",
-                ".bivx",
-                ".vob",
-                ".nrg",
-                ".img",
-                ".iso",
-                ".pva",
-                ".wmv",
+                ".amv",
                 ".asf",
                 ".asx",
-                ".ogm",
-                ".m2v",
                 ".avi",
                 ".bin",
-                ".dvr-ms",
-                ".mpg",
-                ".mpeg",
-                ".mp4",
-                ".mkv",
-                ".avc",
-                ".vp3",
-                ".svq3",
-                ".nuv",
-                ".viv",
+                ".bivx",
+                ".divx",
                 ".dv",
+                ".dvr-ms",
+                ".f4v",
                 ".fli",
                 ".flv",
-                ".001",
-                ".tp"
+                ".ifo",
+                ".img",
+                ".iso",
+                ".m2t",
+                ".m2ts",
+                ".m2v",
+                ".m4v",
+                ".mkv",
+                ".mk3d",
+                ".mov",
+                ".mp4",
+                ".mpe",
+                ".mpeg",
+                ".mpg",
+                ".mts",
+                ".mxf",
+                ".nrg",
+                ".nsv",
+                ".nuv",
+                ".ogg",
+                ".ogm",
+                ".ogv",
+                ".pva",
+                ".qt",
+                ".rec",
+                ".rm",
+                ".rmvb",
+                ".strm",
+                ".svq3",
+                ".tp",
+                ".ts",
+                ".ty",
+                ".viv",
+                ".vob",
+                ".vp3",
+                ".webm",
+                ".wmv",
+                ".wtv",
+                ".xvid"
             };
 
             VideoFlagDelimiters = new[]
@@ -124,11 +138,11 @@ namespace Emby.Naming.Common
                     token: "DSR")
             };
 
-            VideoFileStackingExpressions = new[]
+            VideoFileStackingRules = new[]
             {
-                "(?<title>.*?)(?<volume>[ _.-]*(?:cd|dvd|p(?:ar)?t|dis[ck])[ _.-]*[0-9]+)(?<ignore>.*?)(?<extension>\\.[^.]+)$",
-                "(?<title>.*?)(?<volume>[ _.-]*(?:cd|dvd|p(?:ar)?t|dis[ck])[ _.-]*[a-d])(?<ignore>.*?)(?<extension>\\.[^.]+)$",
-                "(?<title>.*?)(?<volume>[ ._-]*[a-d])(?<ignore>.*?)(?<extension>\\.[^.]+)$"
+                new FileStackRule(@"^(?<filename>.*?)(?:(?<=[\]\)\}])|[ _.-]+)[\(\[]?(?<parttype>cd|dvd|part|pt|dis[ck])[ _.-]*(?<number>[0-9]+)[\)\]]?(?:\.[^.]+)?$", true),
+                new FileStackRule(@"^(?<filename>.*?)(?:(?<=[\]\)\}])|[ _.-]+)[\(\[]?(?<parttype>cd|dvd|part|pt|dis[ck])[ _.-]*(?<number>[a-d])[\)\]]?(?:\.[^.]+)?$", false),
+                new FileStackRule(@"^(?<filename>.*?)(?:(?<=[\]\)\}])|[ _.-]?)(?<number>[a-d])(?:\.[^.]+)?$", false)
             };
 
             CleanDateTimes = new[]
@@ -148,32 +162,20 @@ namespace Emby.Naming.Common
 
             SubtitleFileExtensions = new[]
             {
+                ".ass",
+                ".mks",
+                ".sami",
+                ".smi",
                 ".srt",
                 ".ssa",
-                ".ass",
-                ".sub"
-            };
-
-            SubtitleFlagDelimiters = new[]
-            {
-                '.'
-            };
-
-            SubtitleForcedFlags = new[]
-            {
-                "foreign",
-                "forced"
-            };
-
-            SubtitleDefaultFlags = new[]
-            {
-                "default"
+                ".sub",
+                ".vtt",
             };
 
             AlbumStackingPrefixes = new[]
             {
-                "disc",
                 "cd",
+                "disc",
                 "disk",
                 "vol",
                 "volume"
@@ -181,68 +183,100 @@ namespace Emby.Naming.Common
 
             AudioFileExtensions = new[]
             {
-                ".nsv",
-                ".m4a",
-                ".flac",
-                ".aac",
-                ".strm",
-                ".pls",
-                ".rm",
-                ".mpa",
-                ".wav",
-                ".wma",
-                ".ogg",
-                ".opus",
-                ".mp3",
-                ".mp2",
-                ".mod",
-                ".amf",
                 ".669",
+                ".3gp",
+                ".aa",
+                ".aac",
+                ".aax",
+                ".ac3",
+                ".act",
+                ".adp",
+                ".adplug",
+                ".adx",
+                ".afc",
+                ".amf",
+                ".aif",
+                ".aiff",
+                ".alac",
+                ".amr",
+                ".ape",
+                ".ast",
+                ".au",
+                ".awb",
+                ".cda",
+                ".cue",
                 ".dmf",
+                ".dsf",
                 ".dsm",
+                ".dsp",
+                ".dts",
+                ".dvf",
                 ".far",
+                ".flac",
                 ".gdm",
+                ".gsm",
+                ".gym",
+                ".hps",
                 ".imf",
                 ".it",
                 ".m15",
+                ".m4a",
+                ".m4b",
+                ".mac",
                 ".med",
+                ".mka",
+                ".mmf",
+                ".mod",
+                ".mogg",
+                ".mp2",
+                ".mp3",
+                ".mpa",
+                ".mpc",
+                ".mpp",
+                ".mp+",
+                ".msv",
+                ".nmf",
+                ".nsf",
+                ".nsv",
+                ".oga",
+                ".ogg",
                 ".okt",
+                ".opus",
+                ".pls",
+                ".ra",
+                ".rf64",
+                ".rm",
                 ".s3m",
-                ".stm",
                 ".sfx",
+                ".shn",
+                ".sid",
+                ".stm",
+                ".strm",
                 ".ult",
                 ".uni",
-                ".xm",
-                ".sid",
-                ".ac3",
-                ".dts",
-                ".cue",
-                ".aif",
-                ".aiff",
-                ".ape",
-                ".mac",
-                ".mpc",
-                ".mp+",
-                ".mpp",
-                ".shn",
+                ".vox",
+                ".wav",
+                ".wma",
                 ".wv",
-                ".nsf",
-                ".spc",
-                ".gym",
-                ".adplug",
-                ".adx",
-                ".dsp",
-                ".adp",
-                ".ymf",
-                ".ast",
-                ".afc",
-                ".hps",
+                ".xm",
                 ".xsp",
-                ".acc",
-                ".m4b",
-                ".oga",
-                ".dsf",
-                ".mka"
+                ".ymf"
+            };
+
+            MediaFlagDelimiters = new[]
+            {
+                '.'
+            };
+
+            MediaForcedFlags = new[]
+            {
+                "foreign",
+                "forced"
+            };
+
+            MediaDefaultFlags = new[]
+            {
+                "default"
             };
 
             EpisodeExpressions = new[]
@@ -279,7 +313,7 @@ namespace Emby.Naming.Common
                 // This isn't a Kodi naming rule, but the expression below causes false positives,
                 // so we make sure this one gets tested first.
                 // "Foo Bar 889"
-                new EpisodeExpression(@".*[\\\/](?![Ee]pisode)(?<seriesname>[\w\s]+?)\s(?<epnumber>[0-9]{1,3})(-(?<endingepnumber>[0-9]{2,3}))*[^\\\/x]*$")
+                new EpisodeExpression(@".*[\\\/](?![Ee]pisode)(?<seriesname>[\w\s]+?)\s(?<epnumber>[0-9]{1,4})(-(?<endingepnumber>[0-9]{2,4}))*[^\\\/x]*$")
                 {
                     IsNamed = true
                 },
@@ -403,6 +437,72 @@ namespace Emby.Naming.Common
 
             VideoExtraRules = new[]
             {
+                new ExtraRule(
+                    ExtraType.Trailer,
+                    ExtraRuleType.DirectoryName,
+                    "trailers",
+                    MediaType.Video),
+
+                new ExtraRule(
+                    ExtraType.ThemeVideo,
+                    ExtraRuleType.DirectoryName,
+                    "backdrops",
+                    MediaType.Video),
+
+                new ExtraRule(
+                    ExtraType.ThemeSong,
+                    ExtraRuleType.DirectoryName,
+                    "theme-music",
+                    MediaType.Audio),
+
+                new ExtraRule(
+                    ExtraType.BehindTheScenes,
+                    ExtraRuleType.DirectoryName,
+                    "behind the scenes",
+                    MediaType.Video),
+
+                new ExtraRule(
+                    ExtraType.DeletedScene,
+                    ExtraRuleType.DirectoryName,
+                    "deleted scenes",
+                    MediaType.Video),
+
+                new ExtraRule(
+                    ExtraType.Interview,
+                    ExtraRuleType.DirectoryName,
+                    "interviews",
+                    MediaType.Video),
+
+                new ExtraRule(
+                    ExtraType.Scene,
+                    ExtraRuleType.DirectoryName,
+                    "scenes",
+                    MediaType.Video),
+
+                new ExtraRule(
+                    ExtraType.Sample,
+                    ExtraRuleType.DirectoryName,
+                    "samples",
+                    MediaType.Video),
+
+                new ExtraRule(
+                    ExtraType.Clip,
+                    ExtraRuleType.DirectoryName,
+                    "shorts",
+                    MediaType.Video),
+
+                new ExtraRule(
+                    ExtraType.Clip,
+                    ExtraRuleType.DirectoryName,
+                    "featurettes",
+                    MediaType.Video),
+
+                new ExtraRule(
+                    ExtraType.Unknown,
+                    ExtraRuleType.DirectoryName,
+                    "extras",
+                    MediaType.Video),
+
                 new ExtraRule(
                     ExtraType.Trailer,
                     ExtraRuleType.Filename,
@@ -517,55 +617,17 @@ namespace Emby.Naming.Common
                     "-short",
                     MediaType.Video),
 
-                new ExtraRule(
-                    ExtraType.BehindTheScenes,
-                    ExtraRuleType.DirectoryName,
-                    "behind the scenes",
-                    MediaType.Video),
-
-                new ExtraRule(
-                    ExtraType.DeletedScene,
-                    ExtraRuleType.DirectoryName,
-                    "deleted scenes",
-                    MediaType.Video),
-
-                new ExtraRule(
-                    ExtraType.Interview,
-                    ExtraRuleType.DirectoryName,
-                    "interviews",
-                    MediaType.Video),
-
-                new ExtraRule(
-                    ExtraType.Scene,
-                    ExtraRuleType.DirectoryName,
-                    "scenes",
-                    MediaType.Video),
-
-                new ExtraRule(
-                    ExtraType.Sample,
-                    ExtraRuleType.DirectoryName,
-                    "samples",
-                    MediaType.Video),
-
-                new ExtraRule(
-                    ExtraType.Clip,
-                    ExtraRuleType.DirectoryName,
-                    "shorts",
-                    MediaType.Video),
-
-                new ExtraRule(
-                    ExtraType.Clip,
-                    ExtraRuleType.DirectoryName,
-                    "featurettes",
-                    MediaType.Video),
-
                 new ExtraRule(
                     ExtraType.Unknown,
-                    ExtraRuleType.DirectoryName,
-                    "extras",
-                    MediaType.Video),
+                    ExtraRuleType.Suffix,
+                    "-extra",
+                    MediaType.Video)
             };
 
+            AllExtrasTypesFolderNames = VideoExtraRules
+                .Where(i => i.RuleType == ExtraRuleType.DirectoryName)
+                .ToDictionary(i => i.Token, i => i.ExtraType, StringComparer.OrdinalIgnoreCase);
+
             Format3DRules = new[]
             {
                 // Kodi rules:
@@ -619,41 +681,6 @@ namespace Emby.Naming.Common
                 @"^\s*(?<name>[^ ].*?)\s*$"
             };
 
-            var extensions = VideoFileExtensions.ToList();
-
-            extensions.AddRange(new[]
-            {
-                ".mkv",
-                ".m2t",
-                ".m2ts",
-                ".img",
-                ".iso",
-                ".mk3d",
-                ".ts",
-                ".rmvb",
-                ".mov",
-                ".avi",
-                ".mpg",
-                ".mpeg",
-                ".wmv",
-                ".mp4",
-                ".divx",
-                ".dvr-ms",
-                ".wtv",
-                ".ogm",
-                ".ogv",
-                ".asf",
-                ".m4v",
-                ".flv",
-                ".f4v",
-                ".3gp",
-                ".webm",
-                ".mts",
-                ".m2v",
-                ".rec",
-                ".mxf"
-            });
-
             MultipleEpisodeExpressions = new[]
             {
                 @".*(\\|\/)[sS]?(?<seasonnumber>[0-9]{1,4})[xX](?<epnumber>[0-9]{1,3})((-| - )[0-9]{1,4}[eExX](?<endingepnumber>[0-9]{1,3}))+[^\\\/]*$",
@@ -671,18 +698,34 @@ namespace Emby.Naming.Common
                 IsNamed = true
             }).ToArray();
 
-            VideoFileExtensions = extensions
-                .Distinct(StringComparer.OrdinalIgnoreCase)
-                .ToArray();
-
             Compile();
         }
 
+        /// <summary>
+        /// Gets or sets the folder name to extra types mapping.
+        /// </summary>
+        public Dictionary<string, ExtraType> AllExtrasTypesFolderNames { get; set; }
+
         /// <summary>
         /// Gets or sets list of audio file extensions.
         /// </summary>
         public string[] AudioFileExtensions { get; set; }
 
+        /// <summary>
+        /// Gets or sets list of external media flag delimiters.
+        /// </summary>
+        public char[] MediaFlagDelimiters { get; set; }
+
+        /// <summary>
+        /// Gets or sets list of external media forced flags.
+        /// </summary>
+        public string[] MediaForcedFlags { get; set; }
+
+        /// <summary>
+        /// Gets or sets list of external media default flags.
+        /// </summary>
+        public string[] MediaDefaultFlags { get; set; }
+
         /// <summary>
         /// Gets or sets list of album stacking prefixes.
         /// </summary>
@@ -693,21 +736,6 @@ namespace Emby.Naming.Common
         /// </summary>
         public string[] SubtitleFileExtensions { get; set; }
 
-        /// <summary>
-        /// Gets or sets list of subtitles flag delimiters.
-        /// </summary>
-        public char[] SubtitleFlagDelimiters { get; set; }
-
-        /// <summary>
-        /// Gets or sets list of subtitle forced flags.
-        /// </summary>
-        public string[] SubtitleForcedFlags { get; set; }
-
-        /// <summary>
-        /// Gets or sets list of subtitle default flags.
-        /// </summary>
-        public string[] SubtitleDefaultFlags { get; set; }
-
         /// <summary>
         /// Gets or sets list of episode regular expressions.
         /// </summary>
@@ -759,9 +787,9 @@ namespace Emby.Naming.Common
         public Format3DRule[] Format3DRules { get; set; }
 
         /// <summary>
-        /// Gets or sets list of raw video file-stacking expressions strings.
+        /// Gets the file stacking rules.
         /// </summary>
-        public string[] VideoFileStackingExpressions { get; set; }
+        public FileStackRule[] VideoFileStackingRules { get; }
 
         /// <summary>
         /// Gets or sets list of raw clean DateTimes regular expressions strings.
@@ -783,11 +811,6 @@ namespace Emby.Naming.Common
         /// </summary>
         public ExtraRule[] VideoExtraRules { get; set; }
 
-        /// <summary>
-        /// Gets list of video file-stack regular expressions.
-        /// </summary>
-        public Regex[] VideoFileStackingRegexes { get; private set; } = Array.Empty<Regex>();
-
         /// <summary>
         /// Gets list of clean datetime regular expressions.
         /// </summary>
@@ -813,7 +836,6 @@ namespace Emby.Naming.Common
         /// </summary>
         public void Compile()
         {
-            VideoFileStackingRegexes = VideoFileStackingExpressions.Select(Compile).ToArray();
             CleanDateTimeRegexes = CleanDateTimes.Select(Compile).ToArray();
             CleanStringRegexes = CleanStrings.Select(Compile).ToArray();
             EpisodeWithoutSeasonRegexes = EpisodeWithoutSeasonExpressions.Select(Compile).ToArray();

Emby.Naming/Emby.Naming.csproj

@@ -15,6 +15,10 @@
     <SymbolPackageFormat>snupkg</SymbolPackageFormat>
   </PropertyGroup>
 
+  <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
+    <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
+  </PropertyGroup>
+
   <PropertyGroup Condition=" '$(Stability)'=='Unstable'">
     <!-- Include all symbols in the main nupkg until Azure Artifact Feed starts supporting ingesting NuGet symbol packages. -->
     <AllowedOutputExtensionsInPackageBuildOutputFolder>$(AllowedOutputExtensionsInPackageBuildOutputFolder);.pdb</AllowedOutputExtensionsInPackageBuildOutputFolder>
@@ -32,7 +36,7 @@
   <PropertyGroup>
     <Authors>Jellyfin Contributors</Authors>
     <PackageId>Jellyfin.Naming</PackageId>
-    <VersionPrefix>10.8.0</VersionPrefix>
+    <VersionPrefix>10.8.11</VersionPrefix>
     <RepositoryUrl>https://github.com/jellyfin/jellyfin</RepositoryUrl>
     <PackageLicenseExpression>GPL-3.0-only</PackageLicenseExpression>
   </PropertyGroup>
@@ -43,8 +47,12 @@
 
   <!-- Code Analyzers-->
   <ItemGroup Condition=" '$(Configuration)' == 'Debug' ">
+    <PackageReference Include="Microsoft.CodeAnalysis.BannedApiAnalyzers" Version="3.3.3">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
+    </PackageReference>
     <PackageReference Include="SerilogAnalyzer" Version="0.15.0" PrivateAssets="All" />
-    <PackageReference Include="StyleCop.Analyzers" Version="1.1.118" PrivateAssets="All" />
+    <PackageReference Include="StyleCop.Analyzers" Version="1.2.0-beta.406" PrivateAssets="All" />
     <PackageReference Include="SmartAnalyzers.MultithreadingAnalyzer" Version="1.1.31" PrivateAssets="All" />
   </ItemGroup>
 

Emby.Naming/ExternalFiles/ExternalPathParser.cs

@@ -0,0 +1,116 @@
+using System;
+using System.IO;
+using System.Linq;
+using Emby.Naming.Common;
+using Jellyfin.Extensions;
+using MediaBrowser.Model.Dlna;
+using MediaBrowser.Model.Globalization;
+
+namespace Emby.Naming.ExternalFiles
+{
+    /// <summary>
+    /// External media file parser class.
+    /// </summary>
+    public class ExternalPathParser
+    {
+        private readonly NamingOptions _namingOptions;
+        private readonly DlnaProfileType _type;
+        private readonly ILocalizationManager _localizationManager;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ExternalPathParser"/> class.
+        /// </summary>
+        /// <param name="localizationManager">The localization manager.</param>
+        /// <param name="namingOptions">The <see cref="NamingOptions"/> object containing FileExtensions, MediaDefaultFlags, MediaForcedFlags and MediaFlagDelimiters.</param>
+        /// <param name="type">The <see cref="DlnaProfileType"/> of the parsed file.</param>
+        public ExternalPathParser(NamingOptions namingOptions, ILocalizationManager localizationManager, DlnaProfileType type)
+        {
+            _localizationManager = localizationManager;
+            _namingOptions = namingOptions;
+            _type = type;
+        }
+
+        /// <summary>
+        /// Parse filename and extract information.
+        /// </summary>
+        /// <param name="path">Path to file.</param>
+        /// <param name="extraString">Part of the filename only containing the extra information.</param>
+        /// <returns>Returns null or an <see cref="ExternalPathParserResult"/> object if parsing is successful.</returns>
+        public ExternalPathParserResult? ParseFile(string path, string? extraString)
+        {
+            if (path.Length == 0)
+            {
+                return null;
+            }
+
+            var extension = Path.GetExtension(path);
+            if (!(_type == DlnaProfileType.Subtitle && _namingOptions.SubtitleFileExtensions.Contains(extension, StringComparison.OrdinalIgnoreCase))
+                && !(_type == DlnaProfileType.Audio && _namingOptions.AudioFileExtensions.Contains(extension, StringComparison.OrdinalIgnoreCase)))
+            {
+                return null;
+            }
+
+            var pathInfo = new ExternalPathParserResult(path);
+
+            if (string.IsNullOrEmpty(extraString))
+            {
+                return pathInfo;
+            }
+
+            foreach (var separator in _namingOptions.MediaFlagDelimiters)
+            {
+                var languageString = extraString;
+                var titleString = string.Empty;
+                const int SeparatorLength = 1;
+
+                while (languageString.Length > 0)
+                {
+                    int lastSeparator = languageString.LastIndexOf(separator);
+
+                    if (lastSeparator == -1)
+                    {
+                          break;
+                    }
+
+                    string currentSlice = languageString[lastSeparator..];
+                    string currentSliceWithoutSeparator = currentSlice[SeparatorLength..];
+
+                    if (_namingOptions.MediaDefaultFlags.Any(s => currentSliceWithoutSeparator.Contains(s, StringComparison.OrdinalIgnoreCase)))
+                    {
+                        pathInfo.IsDefault = true;
+                        extraString = extraString.Replace(currentSlice, string.Empty, StringComparison.OrdinalIgnoreCase);
+                        languageString = languageString[..lastSeparator];
+                        continue;
+                    }
+
+                    if (_namingOptions.MediaForcedFlags.Any(s => currentSliceWithoutSeparator.Contains(s, StringComparison.OrdinalIgnoreCase)))
+                    {
+                        pathInfo.IsForced = true;
+                        extraString = extraString.Replace(currentSlice, string.Empty, StringComparison.OrdinalIgnoreCase);
+                        languageString = languageString[..lastSeparator];
+                        continue;
+                    }
+
+                    // Try to translate to three character code
+                    var culture = _localizationManager.FindLanguageInfo(currentSliceWithoutSeparator);
+
+                    if (culture != null && pathInfo.Language == null)
+                    {
+                        pathInfo.Language = culture.ThreeLetterISOLanguageName;
+                        extraString = extraString.Replace(currentSlice, string.Empty, StringComparison.OrdinalIgnoreCase);
+                    }
+                    else
+                    {
+                        titleString = currentSlice + titleString;
+                    }
+
+                    languageString = languageString[..lastSeparator];
+                }
+
+                pathInfo.Title = titleString.Length >= SeparatorLength ? titleString[SeparatorLength..] : null;
+            }
+
+            return pathInfo;
+        }
+    }
+}

Emby.Naming/ExternalFiles/ExternalPathParserResult.cs

@@ -1,17 +1,17 @@
-namespace Emby.Naming.Subtitles
+namespace Emby.Naming.ExternalFiles
 {
     /// <summary>
-    /// Class holding information about subtitle.
+    /// Class holding information about external files.
     /// </summary>
-    public class SubtitleInfo
+    public class ExternalPathParserResult
     {
         /// <summary>
-        /// Initializes a new instance of the <see cref="SubtitleInfo"/> class.
+        /// Initializes a new instance of the <see cref="ExternalPathParserResult"/> class.
         /// </summary>
         /// <param name="path">Path to file.</param>
-        /// <param name="isDefault">Is subtitle default.</param>
-        /// <param name="isForced">Is subtitle forced.</param>
-        public SubtitleInfo(string path, bool isDefault, bool isForced)
+        /// <param name="isDefault">Is default.</param>
+        /// <param name="isForced">Is forced.</param>
+        public ExternalPathParserResult(string path, bool isDefault = false, bool isForced = false)
         {
             Path = path;
             IsDefault = isDefault;
@@ -30,6 +30,12 @@ namespace Emby.Naming.Subtitles
         /// <value>The language.</value>
         public string? Language { get; set; }
 
+        /// <summary>
+        /// Gets or sets the title.
+        /// </summary>
+        /// <value>The title.</value>
+        public string? Title { get; set; }
+
         /// <summary>
         /// Gets or sets a value indicating whether this instance is default.
         /// </summary>

Emby.Naming/Subtitles/SubtitleParser.cs

@@ -1,70 +0,0 @@
-using System;
-using System.IO;
-using System.Linq;
-using Emby.Naming.Common;
-
-namespace Emby.Naming.Subtitles
-{
-    /// <summary>
-    /// Subtitle Parser class.
-    /// </summary>
-    public class SubtitleParser
-    {
-        private readonly NamingOptions _options;
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="SubtitleParser"/> class.
-        /// </summary>
-        /// <param name="options"><see cref="NamingOptions"/> object containing SubtitleFileExtensions, SubtitleDefaultFlags, SubtitleForcedFlags and SubtitleFlagDelimiters.</param>
-        public SubtitleParser(NamingOptions options)
-        {
-            _options = options;
-        }
-
-        /// <summary>
-        /// Parse file to determine if is subtitle and <see cref="SubtitleInfo"/>.
-        /// </summary>
-        /// <param name="path">Path to file.</param>
-        /// <returns>Returns null or <see cref="SubtitleInfo"/> object if parsing is successful.</returns>
-        public SubtitleInfo? ParseFile(string path)
-        {
-            if (path.Length == 0)
-            {
-                return null;
-            }
-
-            var extension = Path.GetExtension(path);
-            if (!_options.SubtitleFileExtensions.Contains(extension, StringComparer.OrdinalIgnoreCase))
-            {
-                return null;
-            }
-
-            var flags = GetFlags(path);
-            var info = new SubtitleInfo(
-                path,
-                _options.SubtitleDefaultFlags.Any(i => flags.Contains(i, StringComparer.OrdinalIgnoreCase)),
-                _options.SubtitleForcedFlags.Any(i => flags.Contains(i, StringComparer.OrdinalIgnoreCase)));
-
-            var parts = flags.Where(i => !_options.SubtitleDefaultFlags.Contains(i, StringComparer.OrdinalIgnoreCase)
-                && !_options.SubtitleForcedFlags.Contains(i, StringComparer.OrdinalIgnoreCase))
-                .ToList();
-
-            // Should have a name, language and file extension
-            if (parts.Count >= 3)
-            {
-                info.Language = parts[^2];
-            }
-
-            return info;
-        }
-
-        private string[] GetFlags(string path)
-        {
-            // Note: the tags need be surrounded be either a space ( ), hyphen -, dot . or underscore _.
-
-            var file = Path.GetFileName(path);
-
-            return file.Split(_options.SubtitleFlagDelimiters, StringSplitOptions.RemoveEmptyEntries);
-        }
-    }
-}

Emby.Naming/TV/EpisodeResolver.cs

@@ -1,8 +1,8 @@
 using System;
 using System.IO;
-using System.Linq;
 using Emby.Naming.Common;
 using Emby.Naming.Video;
+using Jellyfin.Extensions;
 
 namespace Emby.Naming.TV
 {
@@ -48,7 +48,7 @@ namespace Emby.Naming.TV
             {
                 var extension = Path.GetExtension(path);
                 // Check supported extensions
-                if (!_options.VideoFileExtensions.Contains(extension, StringComparer.OrdinalIgnoreCase))
+                if (!_options.VideoFileExtensions.Contains(extension, StringComparison.OrdinalIgnoreCase))
                 {
                     // It's not supported. Check stub extensions
                     if (!StubResolver.TryResolveFile(path, _options, out stubType))

Emby.Naming/TV/SeasonPathParser.cs

@@ -55,7 +55,7 @@ namespace Emby.Naming.TV
         /// <param name="supportSpecialAliases">if set to <c>true</c> [support special aliases].</param>
         /// <param name="supportNumericSeasonFolders">if set to <c>true</c> [support numeric season folders].</param>
         /// <returns>System.Nullable{System.Int32}.</returns>
-        private static (int? seasonNumber, bool isSeasonFolder) GetSeasonNumberFromPath(
+        private static (int? SeasonNumber, bool IsSeasonFolder) GetSeasonNumberFromPath(
             string path,
             bool supportSpecialAliases,
             bool supportNumericSeasonFolders)
@@ -99,7 +99,7 @@ namespace Emby.Naming.TV
                 if (filename.Contains(name, StringComparison.OrdinalIgnoreCase))
                 {
                     var result = GetSeasonNumberFromPathSubstring(filename.Replace(name, " ", StringComparison.OrdinalIgnoreCase));
-                    if (result.seasonNumber.HasValue)
+                    if (result.SeasonNumber.HasValue)
                     {
                         return result;
                     }
@@ -142,7 +142,7 @@ namespace Emby.Naming.TV
         /// </summary>
         /// <param name="path">The path.</param>
         /// <returns>System.Nullable{System.Int32}.</returns>
-        private static (int? seasonNumber, bool isSeasonFolder) GetSeasonNumberFromPathSubstring(ReadOnlySpan<char> path)
+        private static (int? SeasonNumber, bool IsSeasonFolder) GetSeasonNumberFromPathSubstring(ReadOnlySpan<char> path)
         {
             var numericStart = -1;
             var length = 0;

Emby.Naming/TV/SeriesPathParser.cs

@@ -1,4 +1,3 @@
-using System.Globalization;
 using Emby.Naming.Common;
 
 namespace Emby.Naming.TV
@@ -51,7 +50,7 @@ namespace Emby.Naming.TV
                 if (expression.IsNamed)
                 {
                     result.SeriesName = match.Groups["seriesname"].Value;
-                    result.Success = !string.IsNullOrEmpty(result.SeriesName) && !string.IsNullOrEmpty(match.Groups["seasonnumber"]?.Value);
+                    result.Success = !string.IsNullOrEmpty(result.SeriesName) && !match.Groups["seasonnumber"].ValueSpan.IsEmpty;
                 }
             }
 

Emby.Naming/Video/CleanStringParser.cs

@@ -1,4 +1,3 @@
-using System;
 using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
 using System.Text.RegularExpressions;

Emby.Naming/Video/ExtraRuleResolver.cs

@@ -9,45 +9,27 @@ namespace Emby.Naming.Video
     /// <summary>
     /// Resolve if file is extra for video.
     /// </summary>
-    public class ExtraResolver
+    public static class ExtraRuleResolver
     {
-        private static readonly char[] _digits = new[] { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9' };
-        private readonly NamingOptions _options;
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="ExtraResolver"/> class.
-        /// </summary>
-        /// <param name="options"><see cref="NamingOptions"/> object containing VideoExtraRules and passed to <see cref="AudioFileParser"/> and <see cref="VideoResolver"/>.</param>
-        public ExtraResolver(NamingOptions options)
-        {
-            _options = options;
-        }
+        private static readonly char[] _digits = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9' };
 
         /// <summary>
         /// Attempts to resolve if file is extra.
         /// </summary>
         /// <param name="path">Path to file.</param>
+        /// <param name="namingOptions">The naming options.</param>
         /// <returns>Returns <see cref="ExtraResult"/> object.</returns>
-        public ExtraResult GetExtraInfo(string path)
+        public static ExtraResult GetExtraInfo(string path, NamingOptions namingOptions)
         {
             var result = new ExtraResult();
 
-            for (var i = 0; i < _options.VideoExtraRules.Length; i++)
+            for (var i = 0; i < namingOptions.VideoExtraRules.Length; i++)
             {
-                var rule = _options.VideoExtraRules[i];
-                if (rule.MediaType == MediaType.Audio)
+                var rule = namingOptions.VideoExtraRules[i];
+                if ((rule.MediaType == MediaType.Audio && !AudioFileParser.IsAudioFile(path, namingOptions))
+                    || (rule.MediaType == MediaType.Video && !VideoResolver.IsVideoFile(path, namingOptions)))
                 {
-                    if (!AudioFileParser.IsAudioFile(path, _options))
-                    {
-                        continue;
-                    }
-                }
-                else if (rule.MediaType == MediaType.Video)
-                {
-                    if (!VideoResolver.IsVideoFile(path, _options))
-                    {
-                        continue;
-                    }
+                    continue;
                 }
 
                 var pathSpan = path.AsSpan();
@@ -76,9 +58,9 @@ namespace Emby.Naming.Video
                 {
                     var filename = Path.GetFileName(path);
 
-                    var regex = new Regex(rule.Token, RegexOptions.IgnoreCase);
+                    var isMatch = Regex.IsMatch(filename, rule.Token, RegexOptions.IgnoreCase | RegexOptions.Compiled);
 
-                    if (regex.IsMatch(filename))
+                    if (isMatch)
                     {
                         result.ExtraType = rule.ExtraType;
                         result.Rule = rule;

Emby.Naming/Video/FileStack.cs

@@ -1,6 +1,6 @@
 using System;
 using System.Collections.Generic;
-using System.Linq;
+using Jellyfin.Extensions;
 
 namespace Emby.Naming.Video
 {
@@ -12,25 +12,30 @@ namespace Emby.Naming.Video
         /// <summary>
         /// Initializes a new instance of the <see cref="FileStack"/> class.
         /// </summary>
-        public FileStack()
+        /// <param name="name">The stack name.</param>
+        /// <param name="isDirectory">Whether the stack files are directories.</param>
+        /// <param name="files">The stack files.</param>
+        public FileStack(string name, bool isDirectory, IReadOnlyList<string> files)
         {
-            Files = new List<string>();
+            Name = name;
+            IsDirectoryStack = isDirectory;
+            Files = files;
         }
 
         /// <summary>
-        /// Gets or sets name of file stack.
+        /// Gets the name of file stack.
         /// </summary>
-        public string Name { get; set; } = string.Empty;
+        public string Name { get; }
 
         /// <summary>
-        /// Gets or sets list of paths in stack.
+        /// Gets the list of paths in stack.
         /// </summary>
-        public List<string> Files { get; set; }
+        public IReadOnlyList<string> Files { get; }
 
         /// <summary>
-        /// Gets or sets a value indicating whether stack is directory stack.
+        /// Gets a value indicating whether stack is directory stack.
         /// </summary>
-        public bool IsDirectoryStack { get; set; }
+        public bool IsDirectoryStack { get; }
 
         /// <summary>
         /// Helper function to determine if path is in the stack.
@@ -40,12 +45,12 @@ namespace Emby.Naming.Video
         /// <returns>True if file is in the stack.</returns>
         public bool ContainsFile(string file, bool isDirectory)
         {
-            if (IsDirectoryStack == isDirectory)
+            if (string.IsNullOrEmpty(file))
             {
-                return Files.Contains(file, StringComparer.OrdinalIgnoreCase);
+                return false;
             }
 
-            return false;
+            return IsDirectoryStack == isDirectory && Files.Contains(file, StringComparison.OrdinalIgnoreCase);
         }
     }
 }

Emby.Naming/Video/FileStackRule.cs

@@ -0,0 +1,48 @@
+using System.Diagnostics.CodeAnalysis;
+using System.Text.RegularExpressions;
+
+namespace Emby.Naming.Video;
+
+/// <summary>
+/// Regex based rule for file stacking (eg. disc1, disc2).
+/// </summary>
+public class FileStackRule
+{
+    private readonly Regex _tokenRegex;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="FileStackRule"/> class.
+    /// </summary>
+    /// <param name="token">Token.</param>
+    /// <param name="isNumerical">Whether the file stack rule uses numerical or alphabetical numbering.</param>
+    public FileStackRule(string token, bool isNumerical)
+    {
+        _tokenRegex = new Regex(token, RegexOptions.IgnoreCase);
+        IsNumerical = isNumerical;
+    }
+
+    /// <summary>
+    /// Gets a value indicating whether the rule uses numerical or alphabetical numbering.
+    /// </summary>
+    public bool IsNumerical { get; }
+
+    /// <summary>
+    /// Match the input against the rule regex.
+    /// </summary>
+    /// <param name="input">The input.</param>
+    /// <param name="result">The part type and number or <c>null</c>.</param>
+    /// <returns>A value indicating whether the input matched the rule.</returns>
+    public bool Match(string input, [NotNullWhen(true)] out (string StackName, string PartType, string PartNumber)? result)
+    {
+        result = null;
+        var match = _tokenRegex.Match(input);
+        if (!match.Success)
+        {
+            return false;
+        }
+
+        var partType = match.Groups["parttype"].Success ? match.Groups["parttype"].Value : "unknown";
+        result = (match.Groups["filename"].Value, partType, match.Groups["number"].Value);
+        return true;
+    }
+}

Emby.Naming/Video/Format3DParser.cs

@@ -9,7 +9,7 @@ namespace Emby.Naming.Video
     public static class Format3DParser
     {
         // Static default result to save on allocation costs.
-        private static readonly Format3DResult _defaultResult = new (false, null);
+        private static readonly Format3DResult _defaultResult = new(false, null);
 
         /// <summary>
         /// Parse 3D format related flags.

Emby.Naming/Video/StackResolver.cs

@@ -2,7 +2,6 @@ using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
-using System.Text.RegularExpressions;
 using Emby.Naming.AudioBook;
 using Emby.Naming.Common;
 using MediaBrowser.Model.IO;
@@ -12,37 +11,28 @@ namespace Emby.Naming.Video
     /// <summary>
     /// Resolve <see cref="FileStack"/> from list of paths.
     /// </summary>
-    public class StackResolver
+    public static class StackResolver
     {
-        private readonly NamingOptions _options;
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="StackResolver"/> class.
-        /// </summary>
-        /// <param name="options"><see cref="NamingOptions"/> object containing VideoFileStackingRegexes and passes options to <see cref="VideoResolver"/>.</param>
-        public StackResolver(NamingOptions options)
-        {
-            _options = options;
-        }
-
         /// <summary>
         /// Resolves only directories from paths.
         /// </summary>
         /// <param name="files">List of paths.</param>
+        /// <param name="namingOptions">The naming options.</param>
         /// <returns>Enumerable <see cref="FileStack"/> of directories.</returns>
-        public IEnumerable<FileStack> ResolveDirectories(IEnumerable<string> files)
+        public static IEnumerable<FileStack> ResolveDirectories(IEnumerable<string> files, NamingOptions namingOptions)
         {
-            return Resolve(files.Select(i => new FileSystemMetadata { FullName = i, IsDirectory = true }));
+            return Resolve(files.Select(i => new FileSystemMetadata { FullName = i, IsDirectory = true }), namingOptions);
         }
 
         /// <summary>
         /// Resolves only files from paths.
         /// </summary>
         /// <param name="files">List of paths.</param>
+        /// <param name="namingOptions">The naming options.</param>
         /// <returns>Enumerable <see cref="FileStack"/> of files.</returns>
-        public IEnumerable<FileStack> ResolveFiles(IEnumerable<string> files)
+        public static IEnumerable<FileStack> ResolveFiles(IEnumerable<string> files, NamingOptions namingOptions)
         {
-            return Resolve(files.Select(i => new FileSystemMetadata { FullName = i, IsDirectory = false }));
+            return Resolve(files.Select(i => new FileSystemMetadata { FullName = i, IsDirectory = false }), namingOptions);
         }
 
         /// <summary>
@@ -50,7 +40,7 @@ namespace Emby.Naming.Video
         /// </summary>
         /// <param name="files">List of paths.</param>
         /// <returns>Enumerable <see cref="FileStack"/> of directories.</returns>
-        public IEnumerable<FileStack> ResolveAudioBooks(IEnumerable<AudioBookFileInfo> files)
+        public static IEnumerable<FileStack> ResolveAudioBooks(IEnumerable<AudioBookFileInfo> files)
         {
             var groupedDirectoryFiles = files.GroupBy(file => Path.GetDirectoryName(file.Path));
 
@@ -60,19 +50,13 @@ namespace Emby.Naming.Video
                 {
                     foreach (var file in directory)
                     {
-                        var stack = new FileStack { Name = Path.GetFileNameWithoutExtension(file.Path), IsDirectoryStack = false };
-                        stack.Files.Add(file.Path);
+                        var stack = new FileStack(Path.GetFileNameWithoutExtension(file.Path), false, new[] { file.Path });
                         yield return stack;
                     }
                 }
                 else
                 {
-                    var stack = new FileStack { Name = Path.GetFileName(directory.Key), IsDirectoryStack = false };
-                    foreach (var file in directory)
-                    {
-                        stack.Files.Add(file.Path);
-                    }
-
+                    var stack = new FileStack(Path.GetFileName(directory.Key), false, directory.Select(f => f.Path).ToArray());
                     yield return stack;
                 }
             }
@@ -82,158 +66,91 @@ namespace Emby.Naming.Video
         /// Resolves videos from paths.
         /// </summary>
         /// <param name="files">List of paths.</param>
+        /// <param name="namingOptions">The naming options.</param>
         /// <returns>Enumerable <see cref="FileStack"/> of videos.</returns>
-        public IEnumerable<FileStack> Resolve(IEnumerable<FileSystemMetadata> files)
+        public static IEnumerable<FileStack> Resolve(IEnumerable<FileSystemMetadata> files, NamingOptions namingOptions)
         {
-            var list = files
-                .Where(i => i.IsDirectory || VideoResolver.IsVideoFile(i.FullName, _options) || VideoResolver.IsStubFile(i.FullName, _options))
-                .OrderBy(i => i.FullName)
-                .ToList();
+            var potentialFiles = files
+                .Where(i => i.IsDirectory || VideoResolver.IsVideoFile(i.FullName, namingOptions) || VideoResolver.IsStubFile(i.FullName, namingOptions))
+                .OrderBy(i => i.FullName);
 
-            var expressions = _options.VideoFileStackingRegexes;
-
-            for (var i = 0; i < list.Count; i++)
+            var potentialStacks = new Dictionary<string, StackMetadata>();
+            foreach (var file in potentialFiles)
             {
-                var offset = 0;
-
-                var file1 = list[i];
-
-                var expressionIndex = 0;
-                while (expressionIndex < expressions.Length)
+                var name = file.Name;
+                if (string.IsNullOrEmpty(name))
                 {
-                    var exp = expressions[expressionIndex];
-                    var stack = new FileStack();
+                    name = Path.GetFileName(file.FullName);
+                }
 
-                    // (Title)(Volume)(Ignore)(Extension)
-                    var match1 = FindMatch(file1, exp, offset);
-
-                    if (match1.Success)
+                for (var i = 0; i < namingOptions.VideoFileStackingRules.Length; i++)
+                {
+                    var rule = namingOptions.VideoFileStackingRules[i];
+                    if (!rule.Match(name, out var stackParsingResult))
                     {
-                        var title1 = match1.Groups["title"].Value;
-                        var volume1 = match1.Groups["volume"].Value;
-                        var ignore1 = match1.Groups["ignore"].Value;
-                        var extension1 = match1.Groups["extension"].Value;
+                        continue;
+                    }
 
-                        var j = i + 1;
-                        while (j < list.Count)
+                    var stackName = stackParsingResult.Value.StackName;
+                    var partNumber = stackParsingResult.Value.PartNumber;
+                    var partType = stackParsingResult.Value.PartType;
+
+                    if (!potentialStacks.TryGetValue(stackName, out var stackResult))
+                    {
+                        stackResult = new StackMetadata(file.IsDirectory, rule.IsNumerical, partType);
+                        potentialStacks[stackName] = stackResult;
+                    }
+
+                    if (stackResult.Parts.Count > 0)
+                    {
+                        if (stackResult.IsDirectory != file.IsDirectory
+                            || !string.Equals(partType, stackResult.PartType, StringComparison.OrdinalIgnoreCase)
+                            || stackResult.ContainsPart(partNumber))
                         {
-                            var file2 = list[j];
-
-                            if (file1.IsDirectory != file2.IsDirectory)
-                            {
-                                j++;
-                                continue;
-                            }
-
-                            // (Title)(Volume)(Ignore)(Extension)
-                            var match2 = FindMatch(file2, exp, offset);
-
-                            if (match2.Success)
-                            {
-                                var title2 = match2.Groups[1].Value;
-                                var volume2 = match2.Groups[2].Value;
-                                var ignore2 = match2.Groups[3].Value;
-                                var extension2 = match2.Groups[4].Value;
-
-                                if (string.Equals(title1, title2, StringComparison.OrdinalIgnoreCase))
-                                {
-                                    if (!string.Equals(volume1, volume2, StringComparison.OrdinalIgnoreCase))
-                                    {
-                                        if (string.Equals(ignore1, ignore2, StringComparison.OrdinalIgnoreCase)
-                                            && string.Equals(extension1, extension2, StringComparison.OrdinalIgnoreCase))
-                                        {
-                                            if (stack.Files.Count == 0)
-                                            {
-                                                stack.Name = title1 + ignore1;
-                                                stack.IsDirectoryStack = file1.IsDirectory;
-                                                stack.Files.Add(file1.FullName);
-                                            }
-
-                                            stack.Files.Add(file2.FullName);
-                                        }
-                                        else
-                                        {
-                                            // Sequel
-                                            offset = 0;
-                                            expressionIndex++;
-                                            break;
-                                        }
-                                    }
-                                    else if (!string.Equals(ignore1, ignore2, StringComparison.OrdinalIgnoreCase))
-                                    {
-                                        // False positive, try again with offset
-                                        offset = match1.Groups[3].Index;
-                                        break;
-                                    }
-                                    else
-                                    {
-                                        // Extension mismatch
-                                        offset = 0;
-                                        expressionIndex++;
-                                        break;
-                                    }
-                                }
-                                else
-                                {
-                                    // Title mismatch
-                                    offset = 0;
-                                    expressionIndex++;
-                                    break;
-                                }
-                            }
-                            else
-                            {
-                                // No match 2, next expression
-                                offset = 0;
-                                expressionIndex++;
-                                break;
-                            }
-
-                            j++;
+                            continue;
                         }
 
-                        if (j == list.Count)
+                        if (rule.IsNumerical != stackResult.IsNumerical)
                         {
-                            expressionIndex = expressions.Length;
+                            break;
                         }
                     }
-                    else
-                    {
-                        // No match 1
-                        offset = 0;
-                        expressionIndex++;
-                    }
 
-                    if (stack.Files.Count > 1)
-                    {
-                        yield return stack;
-                        i += stack.Files.Count - 1;
-                        break;
-                    }
+                    stackResult.Parts.Add(partNumber, file);
+                    break;
                 }
             }
-        }
 
-        private static string GetRegexInput(FileSystemMetadata file)
-        {
-            // For directories, dummy up an extension otherwise the expressions will fail
-            var input = !file.IsDirectory
-                ? file.FullName
-                : file.FullName + ".mkv";
-
-            return Path.GetFileName(input);
-        }
-
-        private static Match FindMatch(FileSystemMetadata input, Regex regex, int offset)
-        {
-            var regexInput = GetRegexInput(input);
-
-            if (offset < 0 || offset >= regexInput.Length)
+            foreach (var (fileName, stack) in potentialStacks)
             {
-                return Match.Empty;
+                if (stack.Parts.Count < 2)
+                {
+                    continue;
+                }
+
+                yield return new FileStack(fileName, stack.IsDirectory, stack.Parts.Select(kv => kv.Value.FullName).ToArray());
+            }
+        }
+
+        private class StackMetadata
+        {
+            public StackMetadata(bool isDirectory, bool isNumerical, string partType)
+            {
+                Parts = new Dictionary<string, FileSystemMetadata>(StringComparer.OrdinalIgnoreCase);
+                IsDirectory = isDirectory;
+                IsNumerical = isNumerical;
+                PartType = partType;
             }
 
-            return regex.Match(regexInput, offset);
+            public Dictionary<string, FileSystemMetadata> Parts { get; }
+
+            public bool IsDirectory { get; }
+
+            public bool IsNumerical { get; }
+
+            public string PartType { get; }
+
+            public bool ContainsPart(string partNumber) => Parts.ContainsKey(partNumber);
         }
     }
 }

Emby.Naming/Video/StubResolver.cs

@@ -1,7 +1,7 @@
 using System;
 using System.IO;
-using System.Linq;
 using Emby.Naming.Common;
+using Jellyfin.Extensions;
 
 namespace Emby.Naming.Video
 {
@@ -28,7 +28,7 @@ namespace Emby.Naming.Video
 
             var extension = Path.GetExtension(path);
 
-            if (!options.StubFileExtensions.Contains(extension, StringComparer.OrdinalIgnoreCase))
+            if (!options.StubFileExtensions.Contains(extension, StringComparison.OrdinalIgnoreCase))
             {
                 return false;
             }

Emby.Naming/Video/VideoInfo.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using MediaBrowser.Model.Entities;
 
 namespace Emby.Naming.Video
 {
@@ -17,7 +18,6 @@ namespace Emby.Naming.Video
             Name = name;
 
             Files = Array.Empty<VideoFileInfo>();
-            Extras = Array.Empty<VideoFileInfo>();
             AlternateVersions = Array.Empty<VideoFileInfo>();
         }
 
@@ -39,16 +39,15 @@ namespace Emby.Naming.Video
         /// <value>The files.</value>
         public IReadOnlyList<VideoFileInfo> Files { get; set; }
 
-        /// <summary>
-        /// Gets or sets the extras.
-        /// </summary>
-        /// <value>The extras.</value>
-        public IReadOnlyList<VideoFileInfo> Extras { get; set; }
-
         /// <summary>
         /// Gets or sets the alternate versions.
         /// </summary>
         /// <value>The alternate versions.</value>
         public IReadOnlyList<VideoFileInfo> AlternateVersions { get; set; }
+
+        /// <summary>
+        /// Gets or sets the extra type.
+        /// </summary>
+        public ExtraType? ExtraType { get; set; }
     }
 }

Emby.Naming/Video/VideoListResolver.cs

@@ -4,7 +4,6 @@ using System.IO;
 using System.Linq;
 using System.Text.RegularExpressions;
 using Emby.Naming.Common;
-using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.IO;
 
 namespace Emby.Naming.Video
@@ -17,29 +16,41 @@ namespace Emby.Naming.Video
         /// <summary>
         /// Resolves alternative versions and extras from list of video files.
         /// </summary>
-        /// <param name="files">List of related video files.</param>
+        /// <param name="videoInfos">List of related video files.</param>
         /// <param name="namingOptions">The naming options.</param>
         /// <param name="supportMultiVersion">Indication we should consider multi-versions of content.</param>
+        /// <param name="parseName">Whether to parse the name or use the filename.</param>
         /// <returns>Returns enumerable of <see cref="VideoInfo"/> which groups files together when related.</returns>
-        public static IEnumerable<VideoInfo> Resolve(IEnumerable<FileSystemMetadata> files, NamingOptions namingOptions, bool supportMultiVersion = true)
+        public static IReadOnlyList<VideoInfo> Resolve(IReadOnlyList<VideoFileInfo> videoInfos, NamingOptions namingOptions, bool supportMultiVersion = true, bool parseName = true)
         {
-            var videoInfos = files
-                .Select(i => VideoResolver.Resolve(i.FullName, i.IsDirectory, namingOptions))
-                .OfType<VideoFileInfo>()
-                .ToList();
-
             // Filter out all extras, otherwise they could cause stacks to not be resolved
             // See the unit test TestStackedWithTrailer
             var nonExtras = videoInfos
                 .Where(i => i.ExtraType == null)
                 .Select(i => new FileSystemMetadata { FullName = i.Path, IsDirectory = i.IsDirectory });
 
-            var stackResult = new StackResolver(namingOptions)
-                .Resolve(nonExtras).ToList();
+            var stackResult = StackResolver.Resolve(nonExtras, namingOptions).ToList();
 
-            var remainingFiles = videoInfos
-                .Where(i => !stackResult.Any(s => i.Path != null && s.ContainsFile(i.Path, i.IsDirectory)))
-                .ToList();
+            var remainingFiles = new List<VideoFileInfo>();
+            var standaloneMedia = new List<VideoFileInfo>();
+
+            for (var i = 0; i < videoInfos.Count; i++)
+            {
+                var current = videoInfos[i];
+                if (stackResult.Any(s => s.ContainsFile(current.Path, current.IsDirectory)))
+                {
+                    continue;
+                }
+
+                if (current.ExtraType == null)
+                {
+                    standaloneMedia.Add(current);
+                }
+                else
+                {
+                    remainingFiles.Add(current);
+                }
+            }
 
             var list = new List<VideoInfo>();
 
@@ -47,38 +58,20 @@ namespace Emby.Naming.Video
             {
                 var info = new VideoInfo(stack.Name)
                 {
-                    Files = stack.Files.Select(i => VideoResolver.Resolve(i, stack.IsDirectoryStack, namingOptions))
+                    Files = stack.Files.Select(i => VideoResolver.Resolve(i, stack.IsDirectoryStack, namingOptions, parseName))
                         .OfType<VideoFileInfo>()
                         .ToList()
                 };
 
                 info.Year = info.Files[0].Year;
-
-                var extras = ExtractExtras(remainingFiles, stack.Name, Path.GetFileNameWithoutExtension(stack.Files[0].AsSpan()), namingOptions.VideoFlagDelimiters);
-
-                if (extras.Count > 0)
-                {
-                    info.Extras = extras;
-                }
-
                 list.Add(info);
             }
 
-            var standaloneMedia = remainingFiles
-                .Where(i => i.ExtraType == null)
-                .ToList();
-
             foreach (var media in standaloneMedia)
             {
                 var info = new VideoInfo(media.Name) { Files = new[] { media } };
 
                 info.Year = info.Files[0].Year;
-
-                remainingFiles.Remove(media);
-                var extras = ExtractExtras(remainingFiles, media.FileNameWithoutExtension, namingOptions.VideoFlagDelimiters);
-
-                info.Extras = extras;
-
                 list.Add(info);
             }
 
@@ -87,58 +80,12 @@ namespace Emby.Naming.Video
                 list = GetVideosGroupedByVersion(list, namingOptions);
             }
 
-            // If there's only one resolved video, use the folder name as well to find extras
-            if (list.Count == 1)
-            {
-                var info = list[0];
-                var videoPath = list[0].Files[0].Path;
-                var parentPath = Path.GetDirectoryName(videoPath.AsSpan());
-
-                if (!parentPath.IsEmpty)
-                {
-                    var folderName = Path.GetFileName(parentPath);
-                    if (!folderName.IsEmpty)
-                    {
-                        var extras = ExtractExtras(remainingFiles, folderName, namingOptions.VideoFlagDelimiters);
-                        extras.AddRange(info.Extras);
-                        info.Extras = extras;
-                    }
-                }
-
-                // Add the extras that are just based on file name as well
-                var extrasByFileName = remainingFiles
-                    .Where(i => i.ExtraRule != null && i.ExtraRule.RuleType == ExtraRuleType.Filename)
-                    .ToList();
-
-                remainingFiles = remainingFiles
-                    .Except(extrasByFileName)
-                    .ToList();
-
-                extrasByFileName.AddRange(info.Extras);
-                info.Extras = extrasByFileName;
-            }
-
-            // If there's only one video, accept all trailers
-            // Be lenient because people use all kinds of mishmash conventions with trailers.
-            if (list.Count == 1)
-            {
-                var trailers = remainingFiles
-                    .Where(i => i.ExtraType == ExtraType.Trailer)
-                    .ToList();
-
-                trailers.AddRange(list[0].Extras);
-                list[0].Extras = trailers;
-
-                remainingFiles = remainingFiles
-                    .Except(trailers)
-                    .ToList();
-            }
-
             // Whatever files are left, just add them
             list.AddRange(remainingFiles.Select(i => new VideoInfo(i.Name)
             {
                 Files = new[] { i },
-                Year = i.Year
+                Year = i.Year,
+                ExtraType = i.ExtraType
             }));
 
             return list;
@@ -162,6 +109,11 @@ namespace Emby.Naming.Video
             for (var i = 0; i < videos.Count; i++)
             {
                 var video = videos[i];
+                if (video.ExtraType != null)
+                {
+                    continue;
+                }
+
                 if (!IsEligibleForMultiVersion(folderName, video.Files[0].Path, namingOptions))
                 {
                     return videos;
@@ -178,17 +130,14 @@ namespace Emby.Naming.Video
 
             var alternateVersionsLen = videos.Count - 1;
             var alternateVersions = new VideoFileInfo[alternateVersionsLen];
-            var extras = new List<VideoFileInfo>(list[0].Extras);
             for (int i = 0; i < alternateVersionsLen; i++)
             {
                 var video = videos[i + 1];
                 alternateVersions[i] = video.Files[0];
-                extras.AddRange(video.Extras);
             }
 
             list[0].AlternateVersions = alternateVersions;
             list[0].Name = folderName.ToString();
-            list[0].Extras = extras;
 
             return list;
         }
@@ -230,7 +179,7 @@ namespace Emby.Naming.Video
             var tmpTestFilename = testFilename.ToString();
             if (CleanStringParser.TryClean(tmpTestFilename, namingOptions.CleanStringRegexes, out var cleanName))
             {
-                tmpTestFilename = cleanName.Trim().ToString();
+                tmpTestFilename = cleanName.Trim();
             }
 
             // The CleanStringParser should have removed common keywords etc.
@@ -238,67 +187,5 @@ namespace Emby.Naming.Video
                    || testFilename[0] == '-'
                    || Regex.IsMatch(tmpTestFilename, @"^\[([^]]*)\]", RegexOptions.Compiled);
         }
-
-        private static ReadOnlySpan<char> TrimFilenameDelimiters(ReadOnlySpan<char> name, ReadOnlySpan<char> videoFlagDelimiters)
-        {
-            return name.IsEmpty ? name : name.TrimEnd().TrimEnd(videoFlagDelimiters).TrimEnd();
-        }
-
-        private static bool StartsWith(ReadOnlySpan<char> fileName, ReadOnlySpan<char> baseName, ReadOnlySpan<char> trimmedBaseName)
-        {
-            if (baseName.IsEmpty)
-            {
-                return false;
-            }
-
-            return fileName.StartsWith(baseName, StringComparison.OrdinalIgnoreCase)
-                   || (!trimmedBaseName.IsEmpty && fileName.StartsWith(trimmedBaseName, StringComparison.OrdinalIgnoreCase));
-        }
-
-        /// <summary>
-        /// Finds similar filenames to that of [baseName] and removes any matches from [remainingFiles].
-        /// </summary>
-        /// <param name="remainingFiles">The list of remaining filenames.</param>
-        /// <param name="baseName">The base name to use for the comparison.</param>
-        /// <param name="videoFlagDelimiters">The video flag delimiters.</param>
-        /// <returns>A list of video extras for [baseName].</returns>
-        private static List<VideoFileInfo> ExtractExtras(IList<VideoFileInfo> remainingFiles, ReadOnlySpan<char> baseName, ReadOnlySpan<char> videoFlagDelimiters)
-        {
-            return ExtractExtras(remainingFiles, baseName, ReadOnlySpan<char>.Empty, videoFlagDelimiters);
-        }
-
-        /// <summary>
-        /// Finds similar filenames to that of [firstBaseName] and [secondBaseName] and removes any matches from [remainingFiles].
-        /// </summary>
-        /// <param name="remainingFiles">The list of remaining filenames.</param>
-        /// <param name="firstBaseName">The first base name to use for the comparison.</param>
-        /// <param name="secondBaseName">The second base name to use for the comparison.</param>
-        /// <param name="videoFlagDelimiters">The video flag delimiters.</param>
-        /// <returns>A list of video extras for [firstBaseName] and [secondBaseName].</returns>
-        private static List<VideoFileInfo> ExtractExtras(IList<VideoFileInfo> remainingFiles, ReadOnlySpan<char> firstBaseName, ReadOnlySpan<char> secondBaseName, ReadOnlySpan<char> videoFlagDelimiters)
-        {
-            var trimmedFirstBaseName = TrimFilenameDelimiters(firstBaseName, videoFlagDelimiters);
-            var trimmedSecondBaseName = TrimFilenameDelimiters(secondBaseName, videoFlagDelimiters);
-
-            var result = new List<VideoFileInfo>();
-            for (var pos = remainingFiles.Count - 1; pos >= 0; pos--)
-            {
-                var file = remainingFiles[pos];
-                if (file.ExtraType == null)
-                {
-                    continue;
-                }
-
-                var filename = file.FileNameWithoutExtension;
-                if (StartsWith(filename, firstBaseName, trimmedFirstBaseName)
-                    || StartsWith(filename, secondBaseName, trimmedSecondBaseName))
-                {
-                    result.Add(file);
-                    remainingFiles.RemoveAt(pos);
-                }
-            }
-
-            return result;
-        }
     }
 }

Emby.Naming/Video/VideoResolver.cs

@@ -16,10 +16,11 @@ namespace Emby.Naming.Video
         /// </summary>
         /// <param name="path">The path.</param>
         /// <param name="namingOptions">The naming options.</param>
+        /// <param name="parseName">Whether to parse the name or use the filename.</param>
         /// <returns>VideoFileInfo.</returns>
-        public static VideoFileInfo? ResolveDirectory(string? path, NamingOptions namingOptions)
+        public static VideoFileInfo? ResolveDirectory(string? path, NamingOptions namingOptions, bool parseName = true)
         {
-            return Resolve(path, true, namingOptions);
+            return Resolve(path, true, namingOptions, parseName);
         }
 
         /// <summary>
@@ -74,7 +75,7 @@ namespace Emby.Naming.Video
 
             var format3DResult = Format3DParser.Parse(path, namingOptions);
 
-            var extraResult = new ExtraResolver(namingOptions).GetExtraInfo(path);
+            var extraResult = ExtraRuleResolver.GetExtraInfo(path, namingOptions);
 
             var name = Path.GetFileNameWithoutExtension(path);
 

Emby.Notifications/CoreNotificationTypes.cs

@@ -24,63 +24,63 @@ namespace Emby.Notifications
             {
                 new NotificationTypeInfo
                 {
-                     Type = NotificationType.ApplicationUpdateInstalled.ToString()
+                     Type = nameof(NotificationType.ApplicationUpdateInstalled)
                 },
                 new NotificationTypeInfo
                 {
-                     Type = NotificationType.InstallationFailed.ToString()
+                     Type = nameof(NotificationType.InstallationFailed)
                 },
                 new NotificationTypeInfo
                 {
-                     Type = NotificationType.PluginInstalled.ToString()
+                     Type = nameof(NotificationType.PluginInstalled)
                 },
                 new NotificationTypeInfo
                 {
-                     Type = NotificationType.PluginError.ToString()
+                     Type = nameof(NotificationType.PluginError)
                 },
                 new NotificationTypeInfo
                 {
-                     Type = NotificationType.PluginUninstalled.ToString()
+                     Type = nameof(NotificationType.PluginUninstalled)
                 },
                 new NotificationTypeInfo
                 {
-                     Type = NotificationType.PluginUpdateInstalled.ToString()
+                     Type = nameof(NotificationType.PluginUpdateInstalled)
                 },
                 new NotificationTypeInfo
                 {
-                     Type = NotificationType.ServerRestartRequired.ToString()
+                     Type = nameof(NotificationType.ServerRestartRequired)
                 },
                 new NotificationTypeInfo
                 {
-                     Type = NotificationType.TaskFailed.ToString()
+                     Type = nameof(NotificationType.TaskFailed)
                 },
                 new NotificationTypeInfo
                 {
-                     Type = NotificationType.NewLibraryContent.ToString()
+                     Type = nameof(NotificationType.NewLibraryContent)
                 },
                 new NotificationTypeInfo
                 {
-                     Type = NotificationType.AudioPlayback.ToString()
+                     Type = nameof(NotificationType.AudioPlayback)
                 },
                 new NotificationTypeInfo
                 {
-                     Type = NotificationType.VideoPlayback.ToString()
+                     Type = nameof(NotificationType.VideoPlayback)
                 },
                 new NotificationTypeInfo
                 {
-                     Type = NotificationType.AudioPlaybackStopped.ToString()
+                     Type = nameof(NotificationType.AudioPlaybackStopped)
                 },
                 new NotificationTypeInfo
                 {
-                     Type = NotificationType.VideoPlaybackStopped.ToString()
+                     Type = nameof(NotificationType.VideoPlaybackStopped)
                 },
                 new NotificationTypeInfo
                 {
-                     Type = NotificationType.UserLockedOut.ToString()
+                     Type = nameof(NotificationType.UserLockedOut)
                 },
                 new NotificationTypeInfo
                 {
-                    Type = NotificationType.ApplicationUpdateAvailable.ToString()
+                    Type = nameof(NotificationType.ApplicationUpdateAvailable)
                 }
             };
 
@@ -98,7 +98,7 @@ namespace Emby.Notifications
 
         private void Update(NotificationTypeInfo note)
         {
-            note.Name = _localization.GetLocalizedString("NotificationOption" + note.Type) ?? note.Type;
+            note.Name = _localization.GetLocalizedString("NotificationOption" + note.Type);
 
             note.IsBasedOnUserEvent = note.Type.IndexOf("Playback", StringComparison.OrdinalIgnoreCase) != -1;
 

Emby.Notifications/Emby.Notifications.csproj

@@ -23,8 +23,12 @@
 
   <!-- Code analyzers-->
   <ItemGroup Condition=" '$(Configuration)' == 'Debug' ">
+    <PackageReference Include="Microsoft.CodeAnalysis.BannedApiAnalyzers" Version="3.3.3">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
+    </PackageReference>
     <PackageReference Include="SerilogAnalyzer" Version="0.15.0" PrivateAssets="All" />
-    <PackageReference Include="StyleCop.Analyzers" Version="1.1.118" PrivateAssets="All" />
+    <PackageReference Include="StyleCop.Analyzers" Version="1.2.0-beta.406" PrivateAssets="All" />
     <PackageReference Include="SmartAnalyzers.MultithreadingAnalyzer" Version="1.1.31" PrivateAssets="All" />
   </ItemGroup>
 

Emby.Notifications/NotificationEntryPoint.cs

@@ -5,6 +5,7 @@ using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 using Jellyfin.Data.Events;
+using Jellyfin.Extensions;
 using MediaBrowser.Common.Configuration;
 using MediaBrowser.Controller;
 using MediaBrowser.Controller.Entities;
@@ -104,14 +105,14 @@ namespace Emby.Notifications
 
             var type = entry.Type;
 
-            if (string.IsNullOrEmpty(type) || !_coreNotificationTypes.Contains(type, StringComparer.OrdinalIgnoreCase))
+            if (string.IsNullOrEmpty(type) || !_coreNotificationTypes.Contains(type, StringComparison.OrdinalIgnoreCase))
             {
                 return;
             }
 
             var userId = e.Argument.UserId;
 
-            if (!userId.Equals(Guid.Empty) && !GetOptions().IsEnabledToMonitorUser(type, userId))
+            if (!userId.Equals(default) && !GetOptions().IsEnabledToMonitorUser(type, userId))
             {
                 return;
             }

Emby.Photos/Emby.Photos.csproj

@@ -15,7 +15,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="TagLibSharp" Version="2.2.0" />
+    <PackageReference Include="TagLibSharp" Version="2.3.0" />
   </ItemGroup>
 
   <PropertyGroup>
@@ -26,7 +26,11 @@
 
   <!-- Code Analyzers-->
   <ItemGroup Condition=" '$(Configuration)' == 'Debug' ">
-    <PackageReference Include="StyleCop.Analyzers" Version="1.1.118" PrivateAssets="All" />
+    <PackageReference Include="Microsoft.CodeAnalysis.BannedApiAnalyzers" Version="3.3.3">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="StyleCop.Analyzers" Version="1.2.0-beta.406" PrivateAssets="All" />
     <PackageReference Include="SerilogAnalyzer" Version="0.15.0" PrivateAssets="All" />
     <PackageReference Include="SmartAnalyzers.MultithreadingAnalyzer" Version="1.1.31" PrivateAssets="All" />
   </ItemGroup>

Emby.Photos/PhotoProvider.cs

@@ -3,6 +3,7 @@ using System.IO;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
+using Jellyfin.Extensions;
 using MediaBrowser.Controller.Drawing;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
@@ -60,7 +61,7 @@ namespace Emby.Photos
             item.SetImagePath(ImageType.Primary, item.Path);
 
             // Examples: https://github.com/mono/taglib-sharp/blob/a5f6949a53d09ce63ee7495580d6802921a21f14/tests/fixtures/TagLib.Tests.Images/NullOrientationTest.cs
-            if (_includeExtensions.Contains(Path.GetExtension(item.Path), StringComparer.OrdinalIgnoreCase))
+            if (_includeExtensions.Contains(Path.GetExtension(item.Path), StringComparison.OrdinalIgnoreCase))
             {
                 try
                 {

Emby.Server.Implementations/AppBase/BaseConfigurationManager.cs

@@ -301,7 +301,7 @@ namespace Emby.Server.Implementations.AppBase
         {
             return _configurations.GetOrAdd(
                 key,
-                (k, configurationManager) =>
+                static (k, configurationManager) =>
                 {
                     var file = configurationManager.GetConfigurationFile(k);
 
@@ -371,7 +371,7 @@ namespace Emby.Server.Implementations.AppBase
                 NewConfiguration = configuration
             });
 
-            _configurations.AddOrUpdate(key, configuration, (k, v) => configuration);
+            _configurations.AddOrUpdate(key, configuration, (_, _) => configuration);
 
             var path = GetConfigurationFile(key);
             Directory.CreateDirectory(Path.GetDirectoryName(path));
@@ -398,6 +398,12 @@ namespace Emby.Server.Implementations.AppBase
             });
         }
 
+        /// <inheritdoc />
+        public ConfigurationStore[] GetConfigurationStores()
+        {
+            return _configurationStores;
+        }
+
         /// <inheritdoc />
         public Type GetConfigurationType(string key)
         {

Emby.Server.Implementations/AppBase/ConfigurationHelper.cs

@@ -1,6 +1,5 @@
 using System;
 using System.IO;
-using System.Linq;
 using MediaBrowser.Model.Serialization;
 
 namespace Emby.Server.Implementations.AppBase

Emby.Server.Implementations/ApplicationHost.cs

@@ -44,9 +44,9 @@ using Emby.Server.Implementations.Serialization;
 using Emby.Server.Implementations.Session;
 using Emby.Server.Implementations.SyncPlay;
 using Emby.Server.Implementations.TV;
-using Emby.Server.Implementations.Udp;
 using Emby.Server.Implementations.Updates;
 using Jellyfin.Api.Helpers;
+using Jellyfin.MediaEncoding.Hls.Playlist;
 using Jellyfin.Networking.Configuration;
 using Jellyfin.Networking.Manager;
 using MediaBrowser.Common;
@@ -103,6 +103,7 @@ using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using Prometheus.DotNetRuntime;
+using static MediaBrowser.Controller.Extensions.ConfigurationExtensions;
 using WebSocketManager = Emby.Server.Implementations.HttpServer.WebSocketManager;
 
 namespace Emby.Server.Implementations
@@ -110,7 +111,7 @@ namespace Emby.Server.Implementations
     /// <summary>
     /// Class CompositionRoot.
     /// </summary>
-    public abstract class ApplicationHost : IServerApplicationHost, IDisposable
+    public abstract class ApplicationHost : IServerApplicationHost, IAsyncDisposable, IDisposable
     {
         /// <summary>
         /// The environment variable prefixes to log at server startup.
@@ -120,7 +121,7 @@ namespace Emby.Server.Implementations
         /// <summary>
         /// The disposable parts.
         /// </summary>
-        private readonly ConcurrentDictionary<IDisposable, byte> _disposableParts = new ();
+        private readonly ConcurrentDictionary<IDisposable, byte> _disposableParts = new();
 
         private readonly IFileSystem _fileSystemManager;
         private readonly IConfiguration _startupConfig;
@@ -149,7 +150,7 @@ namespace Emby.Server.Implementations
         /// <param name="loggerFactory">Instance of the <see cref="ILoggerFactory"/> interface.</param>
         /// <param name="options">Instance of the <see cref="IStartupOptions"/> interface.</param>
         /// <param name="startupConfig">The <see cref="IConfiguration" /> interface.</param>
-        public ApplicationHost(
+        protected ApplicationHost(
             IServerApplicationPaths applicationPaths,
             ILoggerFactory loggerFactory,
             IStartupOptions options,
@@ -183,6 +184,11 @@ namespace Emby.Server.Implementations
         /// </summary>
         public event EventHandler HasPendingRestartChanged;
 
+        /// <summary>
+        /// Gets the value of the PublishedServerUrl setting.
+        /// </summary>
+        private string PublishedServerUrl => _startupConfig[AddressOverrideKey];
+
         /// <summary>
         /// Gets a value indicating whether this instance can self restart.
         /// </summary>
@@ -259,11 +265,6 @@ namespace Emby.Server.Implementations
         /// </summary>
         public int HttpsPort { get; private set; }
 
-        /// <summary>
-        /// Gets the value of the PublishedServerUrl setting.
-        /// </summary>
-        public string PublishedServerUrl => _startupOptions.PublishedServerUrl ?? _startupConfig[UdpServer.AddressOverrideConfigKey];
-
         /// <inheritdoc />
         public Version ApplicationVersion { get; }
 
@@ -973,7 +974,7 @@ namespace Emby.Server.Implementations
             yield return typeof(IServerApplicationHost).Assembly;
 
             // Include composable parts in the Providers assembly
-            yield return typeof(ProviderUtils).Assembly;
+            yield return typeof(ProviderManager).Assembly;
 
             // Include composable parts in the Photos assembly
             yield return typeof(PhotoProvider).Assembly;
@@ -999,6 +1000,9 @@ namespace Emby.Server.Implementations
             // Network
             yield return typeof(NetworkManager).Assembly;
 
+            // Hls
+            yield return typeof(DynamicHlsPlaylistGenerator).Assembly;
+
             foreach (var i in GetAssembliesWithPartsInternal())
             {
                 yield return i;
@@ -1084,15 +1088,7 @@ namespace Emby.Server.Implementations
                 return GetLocalApiUrl(request.Host.Host, request.Scheme, requestPort);
             }
 
-            // Published server ends with a /
-            if (!string.IsNullOrEmpty(PublishedServerUrl))
-            {
-                // Published server ends with a '/', so we need to remove it.
-                return PublishedServerUrl.Trim('/');
-            }
-
-            string smart = NetManager.GetBindInterface(request, out var port);
-            return GetLocalApiUrl(smart.Trim('/'), request.Scheme, port);
+            return GetSmartApiUrl(request.HttpContext.Connection.RemoteIpAddress ?? IPAddress.Loopback);
         }
 
         /// <inheritdoc/>
@@ -1110,13 +1106,13 @@ namespace Emby.Server.Implementations
         }
 
         /// <inheritdoc/>
-        public string GetApiUrlForLocalAccess(bool allowHttps = true)
+        public string GetApiUrlForLocalAccess(IPObject hostname = null, bool allowHttps = true)
         {
             // With an empty source, the port will be null
-            string smart = NetManager.GetBindInterface(string.Empty, out _);
+            var smart = NetManager.GetBindInterface(hostname ?? IPHost.None, out _);
             var scheme = !allowHttps ? Uri.UriSchemeHttp : null;
             int? port = !allowHttps ? HttpPort : null;
-            return GetLocalApiUrl(smart.Trim('/'), scheme, port);
+            return GetLocalApiUrl(smart, scheme, port);
         }
 
         /// <inheritdoc/>
@@ -1130,11 +1126,13 @@ namespace Emby.Server.Implementations
 
             // NOTE: If no BaseUrl is set then UriBuilder appends a trailing slash, but if there is no BaseUrl it does
             // not. For consistency, always trim the trailing slash.
+            scheme ??= ListenWithHttps ? Uri.UriSchemeHttps : Uri.UriSchemeHttp;
+            var isHttps = string.Equals(scheme, Uri.UriSchemeHttps, StringComparison.OrdinalIgnoreCase);
             return new UriBuilder
             {
-                Scheme = scheme ?? (ListenWithHttps ? Uri.UriSchemeHttps : Uri.UriSchemeHttp),
+                Scheme = scheme,
                 Host = hostname,
-                Port = port ?? (ListenWithHttps ? HttpsPort : HttpPort),
+                Port = port ?? (isHttps ? HttpsPort : HttpPort),
                 Path = ConfigurationManager.GetNetworkConfiguration().BaseUrl
             }.ToString().TrimEnd('/');
         }
@@ -1226,5 +1224,49 @@ namespace Emby.Server.Implementations
 
             _disposed = true;
         }
+
+        public async ValueTask DisposeAsync()
+        {
+            await DisposeAsyncCore().ConfigureAwait(false);
+            Dispose(false);
+            GC.SuppressFinalize(this);
+        }
+
+        /// <summary>
+        /// Used to perform asynchronous cleanup of managed resources or for cascading calls to <see cref="DisposeAsync"/>.
+        /// </summary>
+        /// <returns>A ValueTask.</returns>
+        protected virtual async ValueTask DisposeAsyncCore()
+        {
+            var type = GetType();
+
+            Logger.LogInformation("Disposing {Type}", type.Name);
+
+            foreach (var (part, _) in _disposableParts)
+            {
+                var partType = part.GetType();
+                if (partType == type)
+                {
+                    continue;
+                }
+
+                Logger.LogInformation("Disposing {Type}", partType.Name);
+
+                try
+                {
+                    part.Dispose();
+                }
+                catch (Exception ex)
+                {
+                    Logger.LogError(ex, "Error disposing {Type}", partType.Name);
+                }
+            }
+
+            // used for closing websockets
+            foreach (var session in _sessionManager.Sessions)
+            {
+                await session.DisposeAsync().ConfigureAwait(false);
+            }
+        }
     }
 }

Emby.Server.Implementations/Archiving/ZipClient.cs

@@ -1,11 +1,8 @@
 using System.IO;
 using MediaBrowser.Model.IO;
-using SharpCompress.Archives.SevenZip;
-using SharpCompress.Archives.Tar;
 using SharpCompress.Common;
 using SharpCompress.Readers;
 using SharpCompress.Readers.GZip;
-using SharpCompress.Readers.Zip;
 
 namespace Emby.Server.Implementations.Archiving
 {
@@ -14,55 +11,6 @@ namespace Emby.Server.Implementations.Archiving
     /// </summary>
     public class ZipClient : IZipClient
     {
-        /// <summary>
-        /// Extracts all.
-        /// </summary>
-        /// <param name="sourceFile">The source file.</param>
-        /// <param name="targetPath">The target path.</param>
-        /// <param name="overwriteExistingFiles">if set to <c>true</c> [overwrite existing files].</param>
-        public void ExtractAll(string sourceFile, string targetPath, bool overwriteExistingFiles)
-        {
-            using var fileStream = File.OpenRead(sourceFile);
-            ExtractAll(fileStream, targetPath, overwriteExistingFiles);
-        }
-
-        /// <summary>
-        /// Extracts all.
-        /// </summary>
-        /// <param name="source">The source.</param>
-        /// <param name="targetPath">The target path.</param>
-        /// <param name="overwriteExistingFiles">if set to <c>true</c> [overwrite existing files].</param>
-        public void ExtractAll(Stream source, string targetPath, bool overwriteExistingFiles)
-        {
-            using var reader = ReaderFactory.Open(source);
-            var options = new ExtractionOptions
-            {
-                ExtractFullPath = true
-            };
-
-            if (overwriteExistingFiles)
-            {
-                options.Overwrite = true;
-            }
-
-            Directory.CreateDirectory(targetPath);
-            reader.WriteAllToDirectory(targetPath, options);
-        }
-
-        /// <inheritdoc />
-        public void ExtractAllFromZip(Stream source, string targetPath, bool overwriteExistingFiles)
-        {
-            using var reader = ZipReader.Open(source);
-            var options = new ExtractionOptions
-            {
-                ExtractFullPath = true,
-                Overwrite = overwriteExistingFiles
-            };
-
-            Directory.CreateDirectory(targetPath);
-            reader.WriteAllToDirectory(targetPath, options);
-        }
-
         /// <inheritdoc />
         public void ExtractAllFromGz(Stream source, string targetPath, bool overwriteExistingFiles)
         {
@@ -94,69 +42,5 @@ namespace Emby.Server.Implementations.Archiving
                 reader.WriteEntryToFile(Path.Combine(targetPath, filename));
             }
         }
-
-        /// <summary>
-        /// Extracts all from7z.
-        /// </summary>
-        /// <param name="sourceFile">The source file.</param>
-        /// <param name="targetPath">The target path.</param>
-        /// <param name="overwriteExistingFiles">if set to <c>true</c> [overwrite existing files].</param>
-        public void ExtractAllFrom7z(string sourceFile, string targetPath, bool overwriteExistingFiles)
-        {
-            using var fileStream = File.OpenRead(sourceFile);
-            ExtractAllFrom7z(fileStream, targetPath, overwriteExistingFiles);
-        }
-
-        /// <summary>
-        /// Extracts all from7z.
-        /// </summary>
-        /// <param name="source">The source.</param>
-        /// <param name="targetPath">The target path.</param>
-        /// <param name="overwriteExistingFiles">if set to <c>true</c> [overwrite existing files].</param>
-        public void ExtractAllFrom7z(Stream source, string targetPath, bool overwriteExistingFiles)
-        {
-            using var archive = SevenZipArchive.Open(source);
-            using var reader = archive.ExtractAllEntries();
-            var options = new ExtractionOptions
-            {
-                ExtractFullPath = true,
-                Overwrite = overwriteExistingFiles
-            };
-
-            Directory.CreateDirectory(targetPath);
-            reader.WriteAllToDirectory(targetPath, options);
-        }
-
-        /// <summary>
-        /// Extracts all from tar.
-        /// </summary>
-        /// <param name="sourceFile">The source file.</param>
-        /// <param name="targetPath">The target path.</param>
-        /// <param name="overwriteExistingFiles">if set to <c>true</c> [overwrite existing files].</param>
-        public void ExtractAllFromTar(string sourceFile, string targetPath, bool overwriteExistingFiles)
-        {
-            using var fileStream = File.OpenRead(sourceFile);
-            ExtractAllFromTar(fileStream, targetPath, overwriteExistingFiles);
-        }
-
-        /// <summary>
-        /// Extracts all from tar.
-        /// </summary>
-        /// <param name="source">The source.</param>
-        /// <param name="targetPath">The target path.</param>
-        /// <param name="overwriteExistingFiles">if set to <c>true</c> [overwrite existing files].</param>
-        public void ExtractAllFromTar(Stream source, string targetPath, bool overwriteExistingFiles)
-        {
-            using var archive = TarArchive.Open(source);
-            using var reader = archive.ExtractAllEntries();
-            var options = new ExtractionOptions
-            {
-                ExtractFullPath = true,
-                Overwrite = overwriteExistingFiles
-            };
-
-            Directory.CreateDirectory(targetPath);
-            reader.WriteAllToDirectory(targetPath, options);
-        }
     }
 }

Emby.Server.Implementations/Channels/ChannelManager.cs

@@ -10,6 +10,7 @@ using System.Threading;
 using System.Threading.Tasks;
 using Jellyfin.Data.Entities;
 using Jellyfin.Data.Enums;
+using Jellyfin.Extensions;
 using Jellyfin.Extensions.Json;
 using MediaBrowser.Common.Extensions;
 using MediaBrowser.Common.Progress;
@@ -38,7 +39,7 @@ namespace Emby.Server.Implementations.Channels
     /// <summary>
     /// The LiveTV channel manager.
     /// </summary>
-    public class ChannelManager : IChannelManager
+    public class ChannelManager : IChannelManager, IDisposable
     {
         private readonly IUserManager _userManager;
         private readonly IUserDataManager _userDataManager;
@@ -51,6 +52,7 @@ namespace Emby.Server.Implementations.Channels
         private readonly IMemoryCache _memoryCache;
         private readonly SemaphoreSlim _resourcePool = new SemaphoreSlim(1, 1);
         private readonly JsonSerializerOptions _jsonOptions = JsonDefaults.Options;
+        private bool _disposed = false;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="ChannelManager"/> class.
@@ -129,16 +131,14 @@ namespace Emby.Server.Implementations.Channels
             var internalChannel = _libraryManager.GetItemById(item.ChannelId);
             if (internalChannel == null)
             {
-                throw new ArgumentException();
+                throw new ArgumentException(nameof(item.ChannelId));
             }
 
             var channel = Channels.FirstOrDefault(i => GetInternalChannelId(i.Name).Equals(internalChannel.Id));
 
-            var supportsDelete = channel as ISupportsDelete;
-
-            if (supportsDelete == null)
+            if (channel is not ISupportsDelete supportsDelete)
             {
-                throw new ArgumentException();
+                throw new ArgumentException(nameof(channel));
             }
 
             return supportsDelete.DeleteItem(item.ExternalId, CancellationToken.None);
@@ -162,7 +162,7 @@ namespace Emby.Server.Implementations.Channels
         /// <inheritdoc />
         public QueryResult<Channel> GetChannelsInternal(ChannelQuery query)
         {
-            var user = query.UserId.Equals(Guid.Empty)
+            var user = query.UserId.Equals(default)
                 ? null
                 : _userManager.GetUserById(query.UserId);
 
@@ -179,7 +179,7 @@ namespace Emby.Server.Implementations.Channels
                     try
                     {
                         return (GetChannelProvider(i) is IHasFolderAttributes hasAttributes
-                            && hasAttributes.Attributes.Contains("Recordings", StringComparer.OrdinalIgnoreCase)) == val;
+                            && hasAttributes.Attributes.Contains("Recordings", StringComparison.OrdinalIgnoreCase)) == val;
                     }
                     catch
                     {
@@ -265,17 +265,16 @@ namespace Emby.Server.Implementations.Channels
                 }
             }
 
-            return new QueryResult<Channel>
-            {
-                Items = all,
-                TotalRecordCount = totalCount
-            };
+            return new QueryResult<Channel>(
+                query.StartIndex,
+                totalCount,
+                all);
         }
 
         /// <inheritdoc />
         public QueryResult<BaseItemDto> GetChannels(ChannelQuery query)
         {
-            var user = query.UserId.Equals(Guid.Empty)
+            var user = query.UserId.Equals(default)
                 ? null
                 : _userManager.GetUserById(query.UserId);
 
@@ -286,11 +285,10 @@ namespace Emby.Server.Implementations.Channels
             // TODO Fix The co-variant conversion (internalResult.Items) between Folder[] and BaseItem[], this can generate runtime issues.
             var returnItems = _dtoService.GetBaseItemDtos(internalResult.Items, dtoOptions, user);
 
-            var result = new QueryResult<BaseItemDto>
-            {
-                Items = returnItems,
-                TotalRecordCount = internalResult.TotalRecordCount
-            };
+            var result = new QueryResult<BaseItemDto>(
+                query.StartIndex,
+                internalResult.TotalRecordCount,
+                returnItems);
 
             return result;
         }
@@ -334,7 +332,7 @@ namespace Emby.Server.Implementations.Channels
 
         private Channel GetChannelEntity(IChannel channel)
         {
-            return GetChannel(GetInternalChannelId(channel.Name)) ?? GetChannel(channel, CancellationToken.None).Result;
+            return GetChannel(GetInternalChannelId(channel.Name)) ?? GetChannel(channel, CancellationToken.None).GetAwaiter().GetResult();
         }
 
         private MediaSourceInfo[] GetSavedMediaSources(BaseItem item)
@@ -476,7 +474,7 @@ namespace Emby.Server.Implementations.Channels
 
             item.ChannelId = id;
 
-            if (item.ParentId != parentFolderId)
+            if (!item.ParentId.Equals(parentFolderId))
             {
                 forceUpdate = true;
             }
@@ -541,7 +539,7 @@ namespace Emby.Server.Implementations.Channels
             return _libraryManager.GetItemIds(
                 new InternalItemsQuery
                 {
-                    IncludeItemTypes = new[] { nameof(Channel) },
+                    IncludeItemTypes = new[] { BaseItemKind.Channel },
                     OrderBy = new[] { (ItemSortBy.SortName, SortOrder.Ascending) }
                 }).Select(i => GetChannelFeatures(i)).ToArray();
         }
@@ -621,11 +619,10 @@ namespace Emby.Server.Implementations.Channels
 
             var returnItems = _dtoService.GetBaseItemDtos(items, query.DtoOptions, query.User);
 
-            var result = new QueryResult<BaseItemDto>
-            {
-                Items = returnItems,
-                TotalRecordCount = totalRecordCount
-            };
+            var result = new QueryResult<BaseItemDto>(
+                query.StartIndex,
+                totalRecordCount,
+                returnItems);
 
             return result;
         }
@@ -718,7 +715,9 @@ namespace Emby.Server.Implementations.Channels
             // Find the corresponding channel provider plugin
             var channelProvider = GetChannelProvider(channel);
 
-            var parentItem = query.ParentId == Guid.Empty ? channel : _libraryManager.GetItemById(query.ParentId);
+            var parentItem = query.ParentId.Equals(default)
+                ? channel
+                : _libraryManager.GetItemById(query.ParentId);
 
             var itemsResult = await GetChannelItems(
                 channelProvider,
@@ -729,7 +728,7 @@ namespace Emby.Server.Implementations.Channels
                 cancellationToken)
                 .ConfigureAwait(false);
 
-            if (query.ParentId == Guid.Empty)
+            if (query.ParentId.Equals(default))
             {
                 query.Parent = channel;
             }
@@ -787,11 +786,10 @@ namespace Emby.Server.Implementations.Channels
 
             var returnItems = _dtoService.GetBaseItemDtos(internalResult.Items, query.DtoOptions, query.User);
 
-            var result = new QueryResult<BaseItemDto>
-            {
-                Items = returnItems,
-                TotalRecordCount = internalResult.TotalRecordCount
-            };
+            var result = new QueryResult<BaseItemDto>(
+                query.StartIndex,
+                internalResult.TotalRecordCount,
+                returnItems);
 
             return result;
         }
@@ -1135,7 +1133,7 @@ namespace Emby.Server.Implementations.Channels
 
             if (!info.IsLiveStream)
             {
-                if (item.Tags.Contains("livestream", StringComparer.OrdinalIgnoreCase))
+                if (item.Tags.Contains("livestream", StringComparison.OrdinalIgnoreCase))
                 {
                     item.Tags = item.Tags.Except(new[] { "livestream" }, StringComparer.OrdinalIgnoreCase).ToArray();
                     _logger.LogDebug("Forcing update due to Tags {0}", item.Name);
@@ -1144,7 +1142,7 @@ namespace Emby.Server.Implementations.Channels
             }
             else
             {
-                if (!item.Tags.Contains("livestream", StringComparer.OrdinalIgnoreCase))
+                if (!item.Tags.Contains("livestream", StringComparison.OrdinalIgnoreCase))
                 {
                     item.Tags = item.Tags.Concat(new[] { "livestream" }).ToArray();
                     _logger.LogDebug("Forcing update due to Tags {0}", item.Name);
@@ -1218,5 +1216,31 @@ namespace Emby.Server.Implementations.Channels
 
             return result;
         }
+
+        /// <inheritdoc />
+        public void Dispose()
+        {
+            Dispose(true);
+            GC.SuppressFinalize(this);
+        }
+
+        /// <summary>
+        /// Releases unmanaged and optionally managed resources.
+        /// </summary>
+        /// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
+        protected virtual void Dispose(bool disposing)
+        {
+            if (_disposed)
+            {
+                return;
+            }
+
+            if (disposing)
+            {
+                _resourcePool?.Dispose();
+            }
+
+            _disposed = true;
+        }
     }
 }

Emby.Server.Implementations/Channels/ChannelPostScanTask.cs

@@ -2,6 +2,7 @@ using System;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
+using Jellyfin.Data.Enums;
 using MediaBrowser.Controller.Channels;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
@@ -51,7 +52,7 @@ namespace Emby.Server.Implementations.Channels
 
             var uninstalledChannels = _libraryManager.GetItemList(new InternalItemsQuery
             {
-                IncludeItemTypes = new[] { nameof(Channel) },
+                IncludeItemTypes = new[] { BaseItemKind.Channel },
                 ExcludeItemIds = installedChannelIds.ToArray()
             });
 

Emby.Server.Implementations/Channels/RefreshChannelsScheduledTask.cs

@@ -62,7 +62,7 @@ namespace Emby.Server.Implementations.Channels
         public string Key => "RefreshInternetChannels";
 
         /// <inheritdoc />
-        public async Task Execute(CancellationToken cancellationToken, IProgress<double> progress)
+        public async Task ExecuteAsync(IProgress<double> progress, CancellationToken cancellationToken)
         {
             var manager = (ChannelManager)_channelManager;
 

Emby.Server.Implementations/Collections/CollectionManager.cs

@@ -140,7 +140,7 @@ namespace Emby.Server.Implementations.Collections
 
             if (parentFolder == null)
             {
-                throw new ArgumentException();
+                throw new ArgumentException(nameof(parentFolder));
             }
 
             var path = Path.Combine(parentFolder.Path, folderName);
@@ -265,7 +265,7 @@ namespace Emby.Server.Implementations.Collections
             {
                 var childItem = _libraryManager.GetItemById(guidId);
 
-                var child = collection.LinkedChildren.FirstOrDefault(i => (i.ItemId.HasValue && i.ItemId.Value == guidId) || (childItem != null && string.Equals(childItem.Path, i.Path, StringComparison.OrdinalIgnoreCase)));
+                var child = collection.LinkedChildren.FirstOrDefault(i => (i.ItemId.HasValue && i.ItemId.Value.Equals(guidId)) || (childItem != null && string.Equals(childItem.Path, i.Path, StringComparison.OrdinalIgnoreCase)));
 
                 if (child == null)
                 {

Emby.Server.Implementations/Data/BaseSqliteRepository.cs

@@ -4,8 +4,8 @@
 
 using System;
 using System.Collections.Generic;
-using System.Linq;
 using System.Threading;
+using Jellyfin.Extensions;
 using Microsoft.Extensions.Logging;
 using SQLitePCL.pretty;
 
@@ -160,21 +160,22 @@ namespace Emby.Server.Implementations.Data
         protected bool TableExists(ManagedConnection connection, string name)
         {
             return connection.RunInTransaction(
-            db =>
-            {
-                using (var statement = PrepareStatement(db, "select DISTINCT tbl_name from sqlite_master"))
+                db =>
                 {
-                    foreach (var row in statement.ExecuteQuery())
+                    using (var statement = PrepareStatement(db, "select DISTINCT tbl_name from sqlite_master"))
                     {
-                        if (string.Equals(name, row.GetString(0), StringComparison.OrdinalIgnoreCase))
+                        foreach (var row in statement.ExecuteQuery())
                         {
-                            return true;
+                            if (string.Equals(name, row.GetString(0), StringComparison.OrdinalIgnoreCase))
+                            {
+                                return true;
+                            }
                         }
                     }
-                }
 
-                return false;
-            }, ReadTransactionMode);
+                    return false;
+                },
+                ReadTransactionMode);
         }
 
         protected List<string> GetColumnNames(IDatabaseConnection connection, string table)
@@ -194,7 +195,7 @@ namespace Emby.Server.Implementations.Data
 
         protected void AddColumn(IDatabaseConnection connection, string table, string columnName, string type, List<string> existingColumnNames)
         {
-            if (existingColumnNames.Contains(columnName, StringComparer.OrdinalIgnoreCase))
+            if (existingColumnNames.Contains(columnName, StringComparison.OrdinalIgnoreCase))
             {
                 return;
             }

Emby.Server.Implementations/Data/SqliteUserDataRepository.cs

@@ -26,9 +26,6 @@ namespace Emby.Server.Implementations.Data
             DbFilePath = Path.Combine(appPaths.DataPath, "library.db");
         }
 
-        /// <inheritdoc />
-        public string Name => "SQLite";
-
         /// <summary>
         /// Opens the connection to the database.
         /// </summary>
@@ -50,41 +47,42 @@ namespace Emby.Server.Implementations.Data
                 var users = userDatasTableExists ? null : userManager.Users;
 
                 connection.RunInTransaction(
-                db =>
-                {
-                    db.ExecuteAll(string.Join(';', new[]
+                    db =>
                     {
-                        "create table if not exists UserDatas (key nvarchar not null, userId INT not null, rating float null, played bit not null, playCount int not null, isFavorite bit not null, playbackPositionTicks bigint not null, lastPlayedDate datetime null, AudioStreamIndex INT, SubtitleStreamIndex INT)",
-
-                        "drop index if exists idx_userdata",
-                        "drop index if exists idx_userdata1",
-                        "drop index if exists idx_userdata2",
-                        "drop index if exists userdataindex1",
-                        "drop index if exists userdataindex",
-                        "drop index if exists userdataindex3",
-                        "drop index if exists userdataindex4",
-                        "create unique index if not exists UserDatasIndex1 on UserDatas (key, userId)",
-                        "create index if not exists UserDatasIndex2 on UserDatas (key, userId, played)",
-                        "create index if not exists UserDatasIndex3 on UserDatas (key, userId, playbackPositionTicks)",
-                        "create index if not exists UserDatasIndex4 on UserDatas (key, userId, isFavorite)"
-                    }));
-
-                    if (userDataTableExists)
-                    {
-                        var existingColumnNames = GetColumnNames(db, "userdata");
-
-                        AddColumn(db, "userdata", "InternalUserId", "int", existingColumnNames);
-                        AddColumn(db, "userdata", "AudioStreamIndex", "int", existingColumnNames);
-                        AddColumn(db, "userdata", "SubtitleStreamIndex", "int", existingColumnNames);
-
-                        if (!userDatasTableExists)
+                        db.ExecuteAll(string.Join(';', new[]
                         {
-                            ImportUserIds(db, users);
+                            "create table if not exists UserDatas (key nvarchar not null, userId INT not null, rating float null, played bit not null, playCount int not null, isFavorite bit not null, playbackPositionTicks bigint not null, lastPlayedDate datetime null, AudioStreamIndex INT, SubtitleStreamIndex INT)",
 
-                            db.ExecuteAll("INSERT INTO UserDatas (key, userId, rating, played, playCount, isFavorite, playbackPositionTicks, lastPlayedDate, AudioStreamIndex, SubtitleStreamIndex) SELECT key, InternalUserId, rating, played, playCount, isFavorite, playbackPositionTicks, lastPlayedDate, AudioStreamIndex, SubtitleStreamIndex from userdata where InternalUserId not null");
+                            "drop index if exists idx_userdata",
+                            "drop index if exists idx_userdata1",
+                            "drop index if exists idx_userdata2",
+                            "drop index if exists userdataindex1",
+                            "drop index if exists userdataindex",
+                            "drop index if exists userdataindex3",
+                            "drop index if exists userdataindex4",
+                            "create unique index if not exists UserDatasIndex1 on UserDatas (key, userId)",
+                            "create index if not exists UserDatasIndex2 on UserDatas (key, userId, played)",
+                            "create index if not exists UserDatasIndex3 on UserDatas (key, userId, playbackPositionTicks)",
+                            "create index if not exists UserDatasIndex4 on UserDatas (key, userId, isFavorite)"
+                        }));
+
+                        if (userDataTableExists)
+                        {
+                            var existingColumnNames = GetColumnNames(db, "userdata");
+
+                            AddColumn(db, "userdata", "InternalUserId", "int", existingColumnNames);
+                            AddColumn(db, "userdata", "AudioStreamIndex", "int", existingColumnNames);
+                            AddColumn(db, "userdata", "SubtitleStreamIndex", "int", existingColumnNames);
+
+                            if (!userDatasTableExists)
+                            {
+                                ImportUserIds(db, users);
+
+                                db.ExecuteAll("INSERT INTO UserDatas (key, userId, rating, played, playCount, isFavorite, playbackPositionTicks, lastPlayedDate, AudioStreamIndex, SubtitleStreamIndex) SELECT key, InternalUserId, rating, played, playCount, isFavorite, playbackPositionTicks, lastPlayedDate, AudioStreamIndex, SubtitleStreamIndex from userdata where InternalUserId not null");
+                            }
                         }
-                    }
-                }, TransactionMode);
+                    },
+                    TransactionMode);
             }
         }
 
@@ -101,7 +99,7 @@ namespace Emby.Server.Implementations.Data
                         continue;
                     }
 
-                    statement.TryBind("@UserId", user.Id.ToByteArray());
+                    statement.TryBind("@UserId", user.Id);
                     statement.TryBind("@InternalUserId", user.InternalId);
 
                     statement.MoveNext();
@@ -183,10 +181,11 @@ namespace Emby.Server.Implementations.Data
             using (var connection = GetConnection())
             {
                 connection.RunInTransaction(
-                db =>
-                {
-                    SaveUserData(db, internalUserId, key, userData);
-                }, TransactionMode);
+                    db =>
+                    {
+                        SaveUserData(db, internalUserId, key, userData);
+                    },
+                    TransactionMode);
             }
         }
 
@@ -252,13 +251,14 @@ namespace Emby.Server.Implementations.Data
             using (var connection = GetConnection())
             {
                 connection.RunInTransaction(
-                db =>
-                {
-                    foreach (var userItemData in userDataList)
+                    db =>
                     {
-                        SaveUserData(db, internalUserId, userItemData.Key, userItemData);
-                    }
-                }, TransactionMode);
+                        foreach (var userItemData in userDataList)
+                        {
+                            SaveUserData(db, internalUserId, userItemData.Key, userItemData);
+                        }
+                    },
+                    TransactionMode);
             }
         }
 
@@ -387,6 +387,7 @@ namespace Emby.Server.Implementations.Data
             return userData;
         }
 
+#pragma warning disable CA2215
         /// <inheritdoc/>
         /// <remarks>
         /// There is nothing to dispose here since <see cref="BaseSqliteRepository.WriteLock"/> and
@@ -395,6 +396,10 @@ namespace Emby.Server.Implementations.Data
         /// </remarks>
         protected override void Dispose(bool dispose)
         {
+            // The write lock and connection for the item repository are shared with the user data repository
+            // since they point to the same database. The item repo has responsibility for disposing these two objects,
+            // so the user data repo should not attempt to dispose them as well
         }
+#pragma warning restore CA2215
     }
 }

Emby.Server.Implementations/Devices/DeviceId.cs

@@ -37,7 +37,7 @@ namespace Emby.Server.Implementations.Devices
                 {
                     var value = File.ReadAllText(CachePath, Encoding.UTF8);
 
-                    if (Guid.TryParse(value, out var guid))
+                    if (Guid.TryParse(value, out _))
                     {
                         return value;
                     }

Emby.Server.Implementations/Dto/DtoService.cs

@@ -7,9 +7,9 @@ using System.Collections.Generic;
 using System.Globalization;
 using System.IO;
 using System.Linq;
-using System.Threading.Tasks;
 using Jellyfin.Data.Entities;
 using Jellyfin.Data.Enums;
+using Jellyfin.Extensions;
 using MediaBrowser.Common;
 using MediaBrowser.Controller.Channels;
 using MediaBrowser.Controller.Drawing;
@@ -21,7 +21,6 @@ using MediaBrowser.Controller.LiveTv;
 using MediaBrowser.Controller.Persistence;
 using MediaBrowser.Controller.Playlists;
 using MediaBrowser.Controller.Providers;
-using MediaBrowser.Model.Drawing;
 using MediaBrowser.Model.Dto;
 using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.Querying;
@@ -109,7 +108,7 @@ namespace Emby.Server.Implementations.Dto
                             }
                         });
 
-                        SetItemByNameInfo(item, dto, libraryItems, user);
+                        SetItemByNameInfo(item, dto, libraryItems);
                     }
                 }
 
@@ -153,8 +152,7 @@ namespace Emby.Server.Implementations.Dto
                         new DtoOptions(false)
                         {
                             EnableImages = false
-                        }),
-                    user);
+                        }));
             }
 
             return dto;
@@ -184,7 +182,7 @@ namespace Emby.Server.Implementations.Dto
 
             if (options.ContainsField(ItemFields.People))
             {
-                AttachPeople(dto, item);
+                AttachPeople(dto, item, user);
             }
 
             if (options.ContainsField(ItemFields.PrimaryImageAspectRatio))
@@ -294,7 +292,7 @@ namespace Emby.Server.Implementations.Dto
                             path = path.TrimStart('.');
                         }
 
-                        if (!string.IsNullOrEmpty(path) && containers.Contains(path, StringComparer.OrdinalIgnoreCase))
+                        if (!string.IsNullOrEmpty(path) && containers.Contains(path, StringComparison.OrdinalIgnoreCase))
                         {
                             fileExtensionContainer = path;
                         }
@@ -311,13 +309,13 @@ namespace Emby.Server.Implementations.Dto
 
             if (taggedItems != null && options.ContainsField(ItemFields.ItemCounts))
             {
-                SetItemByNameInfo(item, dto, taggedItems, user);
+                SetItemByNameInfo(item, dto, taggedItems);
             }
 
             return dto;
         }
 
-        private static void SetItemByNameInfo(BaseItem item, BaseItemDto dto, IList<BaseItem> taggedItems, User user = null)
+        private static void SetItemByNameInfo(BaseItem item, BaseItemDto dto, IList<BaseItem> taggedItems)
         {
             if (item is MusicArtist)
             {
@@ -459,18 +457,13 @@ namespace Emby.Server.Implementations.Dto
             }
         }
 
-        private string GetDtoId(BaseItem item)
-        {
-            return item.Id.ToString("N", CultureInfo.InvariantCulture);
-        }
-
         private void SetMusicVideoProperties(BaseItemDto dto, MusicVideo item)
         {
             if (!string.IsNullOrEmpty(item.Album))
             {
                 var parentAlbumIds = _libraryManager.GetItemIds(new InternalItemsQuery
                 {
-                    IncludeItemTypes = new[] { nameof(MusicAlbum) },
+                    IncludeItemTypes = new[] { BaseItemKind.MusicAlbum },
                     Name = item.Album,
                     Limit = 1
                 });
@@ -510,7 +503,8 @@ namespace Emby.Server.Implementations.Dto
         /// </summary>
         /// <param name="dto">The dto.</param>
         /// <param name="item">The item.</param>
-        private void AttachPeople(BaseItemDto dto, BaseItem item)
+        /// <param name="user">The requesting user.</param>
+        private void AttachPeople(BaseItemDto dto, BaseItem item, User user = null)
         {
             // Ordering by person type to ensure actors and artists are at the front.
             // This is taking advantage of the fact that they both begin with A
@@ -567,6 +561,9 @@ namespace Emby.Server.Implementations.Dto
                         return null;
                     }
                 }).Where(i => i != null)
+                .Where(i => user == null ?
+                    true :
+                    i.IsVisible(user))
                 .GroupBy(i => i.Name, StringComparer.OrdinalIgnoreCase)
                 .Select(x => x.First())
                 .ToDictionary(i => i.Name, StringComparer.OrdinalIgnoreCase);
@@ -585,7 +582,7 @@ namespace Emby.Server.Implementations.Dto
                 if (dictionary.TryGetValue(person.Name, out Person entity))
                 {
                     baseItemPerson.PrimaryImageTag = GetTagAndFillBlurhash(dto, entity, ImageType.Primary);
-                    baseItemPerson.Id = entity.Id.ToString("N", CultureInfo.InvariantCulture);
+                    baseItemPerson.Id = entity.Id;
                     if (dto.ImageBlurHashes != null)
                     {
                         // Only add BlurHash for the person's image.
@@ -744,8 +741,7 @@ namespace Emby.Server.Implementations.Dto
                 dto.Tags = item.Tags;
             }
 
-            var hasAspectRatio = item as IHasAspectRatio;
-            if (hasAspectRatio != null)
+            if (item is IHasAspectRatio hasAspectRatio)
             {
                 dto.AspectRatio = hasAspectRatio.AspectRatio;
             }
@@ -895,15 +891,13 @@ namespace Emby.Server.Implementations.Dto
                 dto.CommunityRating = item.CommunityRating;
             }
 
-            var supportsPlaceHolders = item as ISupportsPlaceHolders;
-            if (supportsPlaceHolders != null && supportsPlaceHolders.IsPlaceHolder)
+            if (item is ISupportsPlaceHolders supportsPlaceHolders && supportsPlaceHolders.IsPlaceHolder)
             {
                 dto.IsPlaceHolder = supportsPlaceHolders.IsPlaceHolder;
             }
 
             // Add audio info
-            var audio = item as Audio;
-            if (audio != null)
+            if (item is Audio audio)
             {
                 dto.Album = audio.Album;
                 if (audio.ExtraType.HasValue)
@@ -976,8 +970,7 @@ namespace Emby.Server.Implementations.Dto
                     }).Where(i => i != null).ToArray();
             }
 
-            var hasAlbumArtist = item as IHasAlbumArtist;
-            if (hasAlbumArtist != null)
+            if (item is IHasAlbumArtist hasAlbumArtist)
             {
                 dto.AlbumArtist = hasAlbumArtist.AlbumArtists.FirstOrDefault();
 
@@ -1103,12 +1096,13 @@ namespace Emby.Server.Implementations.Dto
 
             if (options.ContainsField(ItemFields.LocalTrailerCount))
             {
-                allExtras ??= item.GetExtras().ToArray();
-                dto.LocalTrailerCount = allExtras.Count(i => i.ExtraType == ExtraType.Trailer);
-
                 if (item is IHasTrailers hasTrailers)
                 {
-                    dto.LocalTrailerCount += hasTrailers.GetTrailerCount();
+                    dto.LocalTrailerCount = hasTrailers.LocalTrailers.Count;
+                }
+                else
+                {
+                    dto.LocalTrailerCount = (allExtras ?? item.GetExtras()).Count(i => i.ExtraType == ExtraType.Trailer);
                 }
             }
 
@@ -1318,35 +1312,35 @@ namespace Emby.Server.Implementations.Dto
 
                 var allImages = parent.ImageInfos;
 
-                if (logoLimit > 0 && !(imageTags != null && imageTags.ContainsKey(ImageType.Logo)) && dto.ParentLogoItemId == null)
+                if (logoLimit > 0 && !(imageTags != null && imageTags.ContainsKey(ImageType.Logo)) && dto.ParentLogoItemId is null)
                 {
                     var image = allImages.FirstOrDefault(i => i.Type == ImageType.Logo);
 
                     if (image != null)
                     {
-                        dto.ParentLogoItemId = GetDtoId(parent);
+                        dto.ParentLogoItemId = parent.Id;
                         dto.ParentLogoImageTag = GetTagAndFillBlurhash(dto, parent, image);
                     }
                 }
 
-                if (artLimit > 0 && !(imageTags != null && imageTags.ContainsKey(ImageType.Art)) && dto.ParentArtItemId == null)
+                if (artLimit > 0 && !(imageTags != null && imageTags.ContainsKey(ImageType.Art)) && dto.ParentArtItemId is null)
                 {
                     var image = allImages.FirstOrDefault(i => i.Type == ImageType.Art);
 
                     if (image != null)
                     {
-                        dto.ParentArtItemId = GetDtoId(parent);
+                        dto.ParentArtItemId = parent.Id;
                         dto.ParentArtImageTag = GetTagAndFillBlurhash(dto, parent, image);
                     }
                 }
 
-                if (thumbLimit > 0 && !(imageTags != null && imageTags.ContainsKey(ImageType.Thumb)) && (dto.ParentThumbItemId == null || parent is Series) && parent is not ICollectionFolder && parent is not UserView)
+                if (thumbLimit > 0 && !(imageTags != null && imageTags.ContainsKey(ImageType.Thumb)) && (dto.ParentThumbItemId is null || parent is Series) && parent is not ICollectionFolder && parent is not UserView)
                 {
                     var image = allImages.FirstOrDefault(i => i.Type == ImageType.Thumb);
 
                     if (image != null)
                     {
-                        dto.ParentThumbItemId = GetDtoId(parent);
+                        dto.ParentThumbItemId = parent.Id;
                         dto.ParentThumbImageTag = GetTagAndFillBlurhash(dto, parent, image);
                     }
                 }
@@ -1357,7 +1351,7 @@ namespace Emby.Server.Implementations.Dto
 
                     if (images.Count > 0)
                     {
-                        dto.ParentBackdropItemId = GetDtoId(parent);
+                        dto.ParentBackdropItemId = parent.Id;
                         dto.ParentBackdropImageTags = GetTagsAndFillBlurhashes(dto, parent, ImageType.Backdrop, images);
                     }
                 }
@@ -1404,44 +1398,27 @@ namespace Emby.Server.Implementations.Dto
                 return null;
             }
 
-            ImageDimensions size;
-
-            var defaultAspectRatio = item.GetDefaultPrimaryImageAspectRatio();
-
-            if (defaultAspectRatio > 0)
-            {
-                return defaultAspectRatio;
-            }
-
             if (!imageInfo.IsLocalFile)
             {
-                return null;
+                return item.GetDefaultPrimaryImageAspectRatio();
             }
 
             try
             {
-                size = _imageProcessor.GetImageDimensions(item, imageInfo);
-
-                if (size.Width <= 0 || size.Height <= 0)
+                var size = _imageProcessor.GetImageDimensions(item, imageInfo);
+                var width = size.Width;
+                var height = size.Height;
+                if (width > 0 && height > 0)
                 {
-                    return null;
+                    return (double)width / height;
                 }
             }
             catch (Exception ex)
             {
-                _logger.LogError(ex, "Failed to determine primary image aspect ratio for {0}", imageInfo.Path);
-                return null;
+                _logger.LogError(ex, "Failed to determine primary image aspect ratio for {ImagePath}", imageInfo.Path);
             }
 
-            var width = size.Width;
-            var height = size.Height;
-
-            if (width <= 0 || height <= 0)
-            {
-                return null;
-            }
-
-            return (double)width / height;
+            return item.GetDefaultPrimaryImageAspectRatio();
         }
     }
 }

Emby.Server.Implementations/Emby.Server.Implementations.csproj

@@ -24,15 +24,15 @@
 
   <ItemGroup>
     <PackageReference Include="DiscUtils.Udf" Version="0.16.13" />
-    <PackageReference Include="Jellyfin.XmlTv" Version="10.6.2" />
+    <PackageReference Include="Jellyfin.XmlTv" Version="10.8.0" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="6.0.0" />
-    <PackageReference Include="Microsoft.Extensions.Caching.Memory" Version="6.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Caching.Memory" Version="6.0.1" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="6.0.0" />
     <PackageReference Include="Microsoft.Extensions.Hosting.Abstractions" Version="6.0.0" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.Relational" Version="6.0.0" />
-    <PackageReference Include="Mono.Nat" Version="3.0.2" />
-    <PackageReference Include="prometheus-net.DotNetRuntime" Version="4.2.2" />
-    <PackageReference Include="sharpcompress" Version="0.30.1" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Relational" Version="6.0.9" />
+    <PackageReference Include="Mono.Nat" Version="3.0.3" />
+    <PackageReference Include="prometheus-net.DotNetRuntime" Version="4.2.4" />
+    <PackageReference Include="sharpcompress" Version="0.32.2" />
     <PackageReference Include="SQLitePCL.pretty.netstandard" Version="3.1.0" />
     <PackageReference Include="DotNet.Glob" Version="3.1.3" />
   </ItemGroup>
@@ -49,10 +49,18 @@
     <NoWarn>AD0001</NoWarn>
   </PropertyGroup>
 
+  <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
+    <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
+  </PropertyGroup>
+
   <!-- Code Analyzers-->
   <ItemGroup Condition=" '$(Configuration)' == 'Debug' ">
+    <PackageReference Include="Microsoft.CodeAnalysis.BannedApiAnalyzers" Version="3.3.3">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
+    </PackageReference>
     <PackageReference Include="SerilogAnalyzer" Version="0.15.0" PrivateAssets="All" />
-    <PackageReference Include="StyleCop.Analyzers" Version="1.1.118" PrivateAssets="All" />
+    <PackageReference Include="StyleCop.Analyzers" Version="1.2.0-beta.406" PrivateAssets="All" />
     <PackageReference Include="SmartAnalyzers.MultithreadingAnalyzer" Version="1.1.31" PrivateAssets="All" />
   </ItemGroup>
 

Emby.Server.Implementations/EntryPoints/ExternalPortForwarding.cs

@@ -13,7 +13,6 @@ using Jellyfin.Networking.Configuration;
 using MediaBrowser.Controller;
 using MediaBrowser.Controller.Configuration;
 using MediaBrowser.Controller.Plugins;
-using MediaBrowser.Model.Dlna;
 using Microsoft.Extensions.Logging;
 using Mono.Nat;
 

Emby.Server.Implementations/EntryPoints/LibraryChangedNotifier.cs

@@ -101,7 +101,7 @@ namespace Emby.Server.Implementations.EntryPoints
                 }
             }
 
-            _lastProgressMessageTimes.AddOrUpdate(item.Id, key => DateTime.UtcNow, (key, existing) => DateTime.UtcNow);
+            _lastProgressMessageTimes.AddOrUpdate(item.Id, _ => DateTime.UtcNow, (_, _) => DateTime.UtcNow);
 
             var dict = new Dictionary<string, string>();
             dict["ItemId"] = item.Id.ToString("N", CultureInfo.InvariantCulture);
@@ -144,7 +144,7 @@ namespace Emby.Server.Implementations.EntryPoints
         {
             OnProviderRefreshProgress(sender, new GenericEventArgs<Tuple<BaseItem, double>>(new Tuple<BaseItem, double>(e.Argument, 100)));
 
-            _lastProgressMessageTimes.TryRemove(e.Argument.Id, out DateTime removed);
+            _lastProgressMessageTimes.TryRemove(e.Argument.Id, out _);
         }
 
         private static bool EnableRefreshMessage(BaseItem item)
@@ -326,7 +326,7 @@ namespace Emby.Server.Implementations.EntryPoints
         {
             var userIds = _sessionManager.Sessions
                 .Select(i => i.UserId)
-                .Where(i => !i.Equals(Guid.Empty))
+                .Where(i => !i.Equals(default))
                 .Distinct()
                 .ToArray();
 
@@ -423,7 +423,6 @@ namespace Emby.Server.Implementations.EntryPoints
                     continue;
                 }
 
-                var collectionFolders = _libraryManager.GetCollectionFolders(item, allUserRootChildren);
                 foreach (var folder in allUserRootChildren)
                 {
                     list.Add(folder.Id.ToString("N", CultureInfo.InvariantCulture));
@@ -465,6 +464,7 @@ namespace Emby.Server.Implementations.EntryPoints
         public void Dispose()
         {
             Dispose(true);
+            GC.SuppressFinalize(this);
         }
 
         /// <summary>

Emby.Server.Implementations/EntryPoints/UdpServerEntryPoint.cs

@@ -3,6 +3,8 @@ using System.Net.Sockets;
 using System.Threading;
 using System.Threading.Tasks;
 using Emby.Server.Implementations.Udp;
+using Jellyfin.Networking.Configuration;
+using MediaBrowser.Common.Configuration;
 using MediaBrowser.Controller;
 using MediaBrowser.Controller.Plugins;
 using Microsoft.Extensions.Configuration;
@@ -26,6 +28,7 @@ namespace Emby.Server.Implementations.EntryPoints
         private readonly ILogger<UdpServerEntryPoint> _logger;
         private readonly IServerApplicationHost _appHost;
         private readonly IConfiguration _config;
+        private readonly IConfigurationManager _configurationManager;
 
         /// <summary>
         /// The UDP server.
@@ -40,14 +43,17 @@ namespace Emby.Server.Implementations.EntryPoints
         /// <param name="logger">Instance of the <see cref="ILogger{UdpServerEntryPoint}"/> interface.</param>
         /// <param name="appHost">Instance of the <see cref="IServerApplicationHost"/> interface.</param>
         /// <param name="configuration">Instance of the <see cref="IConfiguration"/> interface.</param>
+        /// <param name="configurationManager">Instance of the <see cref="IConfigurationManager"/> interface.</param>
         public UdpServerEntryPoint(
             ILogger<UdpServerEntryPoint> logger,
             IServerApplicationHost appHost,
-            IConfiguration configuration)
+            IConfiguration configuration,
+            IConfigurationManager configurationManager)
         {
             _logger = logger;
             _appHost = appHost;
             _config = configuration;
+            _configurationManager = configurationManager;
         }
 
         /// <inheritdoc />
@@ -55,6 +61,11 @@ namespace Emby.Server.Implementations.EntryPoints
         {
             CheckDisposed();
 
+            if (!_configurationManager.GetNetworkConfiguration().AutoDiscovery)
+            {
+                return Task.CompletedTask;
+            }
+
             try
             {
                 _udpServer = new UdpServer(_logger, _appHost, _config, PortNumber);

Emby.Server.Implementations/EntryPoints/UserDataChangeNotifier.cs

@@ -95,7 +95,7 @@ namespace Emby.Server.Implementations.EntryPoints
                 var changes = _changedItems.ToList();
                 _changedItems.Clear();
 
-                var task = SendNotifications(changes, CancellationToken.None);
+                SendNotifications(changes, CancellationToken.None).GetAwaiter().GetResult();
 
                 if (_updateTimer != null)
                 {

Emby.Server.Implementations/HttpServer/Security/AuthService.cs

@@ -2,7 +2,6 @@
 
 using System.Threading.Tasks;
 using Jellyfin.Data.Enums;
-using MediaBrowser.Controller.Authentication;
 using MediaBrowser.Controller.Net;
 using Microsoft.AspNetCore.Http;
 

Emby.Server.Implementations/HttpServer/Security/SessionContext.cs

@@ -47,7 +47,9 @@ namespace Emby.Server.Implementations.HttpServer.Security
         {
             var session = await GetSession(requestContext).ConfigureAwait(false);
 
-            return session == null || session.UserId.Equals(Guid.Empty) ? null : _userManager.GetUserById(session.UserId);
+            return session.UserId.Equals(default)
+                ? null
+                : _userManager.GetUserById(session.UserId);
         }
 
         public Task<User?> GetUser(object requestContext)

Emby.Server.Implementations/HttpServer/WebSocketConnection.cs

@@ -19,7 +19,7 @@ namespace Emby.Server.Implementations.HttpServer
     /// <summary>
     /// Class WebSocketConnection.
     /// </summary>
-    public class WebSocketConnection : IWebSocketConnection, IDisposable
+    public class WebSocketConnection : IWebSocketConnection
     {
         /// <summary>
         /// The logger.
@@ -36,23 +36,22 @@ namespace Emby.Server.Implementations.HttpServer
         /// </summary>
         private readonly WebSocket _socket;
 
+        private bool _disposed = false;
+
         /// <summary>
         /// Initializes a new instance of the <see cref="WebSocketConnection" /> class.
         /// </summary>
         /// <param name="logger">The logger.</param>
         /// <param name="socket">The socket.</param>
         /// <param name="remoteEndPoint">The remote end point.</param>
-        /// <param name="query">The query.</param>
         public WebSocketConnection(
             ILogger<WebSocketConnection> logger,
             WebSocket socket,
-            IPAddress? remoteEndPoint,
-            IQueryCollection query)
+            IPAddress? remoteEndPoint)
         {
             _logger = logger;
             _socket = socket;
             RemoteEndPoint = remoteEndPoint;
-            QueryString = query;
 
             _jsonOptions = JsonDefaults.Options;
             LastActivityDate = DateTime.Now;
@@ -81,12 +80,6 @@ namespace Emby.Server.Implementations.HttpServer
         /// <inheritdoc />
         public DateTime LastKeepAliveDate { get; set; }
 
-        /// <summary>
-        /// Gets the query string.
-        /// </summary>
-        /// <value>The query string.</value>
-        public IQueryCollection QueryString { get; }
-
         /// <summary>
         /// Gets the state.
         /// </summary>
@@ -180,7 +173,7 @@ namespace Emby.Server.Implementations.HttpServer
             }
 
             WebSocketMessage<object>? stub;
-            long bytesConsumed = 0;
+            long bytesConsumed;
             try
             {
                 stub = DeserializeWebSocketMessage(buffer, out bytesConsumed);
@@ -236,7 +229,8 @@ namespace Emby.Server.Implementations.HttpServer
                 {
                     MessageId = Guid.NewGuid(),
                     MessageType = SessionMessageType.KeepAlive
-                }, CancellationToken.None);
+                },
+                CancellationToken.None);
         }
 
         /// <inheritdoc />
@@ -252,10 +246,39 @@ namespace Emby.Server.Implementations.HttpServer
         /// <param name="dispose"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
         protected virtual void Dispose(bool dispose)
         {
+            if (_disposed)
+            {
+                return;
+            }
+
             if (dispose)
             {
                 _socket.Dispose();
             }
+
+            _disposed = true;
+        }
+
+        /// <inheritdoc />
+        public async ValueTask DisposeAsync()
+        {
+            await DisposeAsyncCore().ConfigureAwait(false);
+            Dispose(false);
+            GC.SuppressFinalize(this);
+        }
+
+        /// <summary>
+        /// Used to perform asynchronous cleanup of managed resources or for cascading calls to <see cref="DisposeAsync"/>.
+        /// </summary>
+        /// <returns>A ValueTask.</returns>
+        protected virtual async ValueTask DisposeAsyncCore()
+        {
+            if (_socket.State == WebSocketState.Open)
+            {
+                await _socket.CloseOutputAsync(WebSocketCloseStatus.NormalClosure, "System Shutdown", CancellationToken.None).ConfigureAwait(false);
+            }
+
+            _socket.Dispose();
         }
     }
 }

Emby.Server.Implementations/HttpServer/WebSocketManager.cs

@@ -7,6 +7,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Net.WebSockets;
 using System.Threading.Tasks;
+using MediaBrowser.Common.Extensions;
 using MediaBrowser.Controller.Net;
 using Microsoft.AspNetCore.Http;
 using Microsoft.Extensions.Logging;
@@ -50,8 +51,7 @@ namespace Emby.Server.Implementations.HttpServer
                 using var connection = new WebSocketConnection(
                     _loggerFactory.CreateLogger<WebSocketConnection>(),
                     webSocket,
-                    context.Connection.RemoteIpAddress,
-                    context.Request.Query)
+                    context.GetNormalizedRemoteIp())
                 {
                     OnReceive = ProcessWebSocketMessageReceived
                 };
@@ -59,7 +59,7 @@ namespace Emby.Server.Implementations.HttpServer
                 var tasks = new Task[_webSocketListeners.Length];
                 for (var i = 0; i < _webSocketListeners.Length; ++i)
                 {
-                    tasks[i] = _webSocketListeners[i].ProcessWebSocketConnectedAsync(connection);
+                    tasks[i] = _webSocketListeners[i].ProcessWebSocketConnectedAsync(connection, context);
                 }
 
                 await Task.WhenAll(tasks).ConfigureAwait(false);

Emby.Server.Implementations/IO/FileRefresher.cs

@@ -217,8 +217,13 @@ namespace Emby.Server.Implementations.IO
         /// <inheritdoc />
         public void Dispose()
         {
-            _disposed = true;
+            if (_disposed)
+            {
+                return;
+            }
+
             DisposeTimer();
+            _disposed = true;
             GC.SuppressFinalize(this);
         }
     }

Emby.Server.Implementations/IO/LibraryMonitor.cs

@@ -99,7 +99,7 @@ namespace Emby.Server.Implementations.IO
             // But if we make this delay too high, we risk missing legitimate changes, such as user adding a new file, or hand-editing metadata
             await Task.Delay(45000).ConfigureAwait(false);
 
-            _tempIgnoredPaths.TryRemove(path, out var val);
+            _tempIgnoredPaths.TryRemove(path, out _);
 
             if (refreshPath)
             {

Emby.Server.Implementations/IO/ManagedFileSystem.cs

@@ -262,6 +262,10 @@ namespace Emby.Server.Implementations.IO
                             _logger.LogError(ex, "Reading the file size of the symlink at {Path} failed. Marking the file as not existing.", fileInfo.FullName);
                             result.Exists = false;
                         }
+                        catch (UnauthorizedAccessException ex)
+                        {
+                            _logger.LogError(ex, "Reading the file at {Path} failed due to a permissions exception.", fileInfo.FullName);
+                        }
                     }
                 }
 
@@ -544,16 +548,6 @@ namespace Emby.Server.Implementations.IO
         /// <inheritdoc />
         public virtual bool AreEqual(string path1, string path2)
         {
-            if (path1 == null && path2 == null)
-            {
-                return true;
-            }
-
-            if (path1 == null || path2 == null)
-            {
-                return false;
-            }
-
             return string.Equals(
                 NormalizePath(path1),
                 NormalizePath(path2),
@@ -591,7 +585,7 @@ namespace Emby.Server.Implementations.IO
         }
 
         /// <inheritdoc />
-        public virtual List<FileSystemMetadata> GetDrives()
+        public virtual IEnumerable<FileSystemMetadata> GetDrives()
         {
             // check for ready state to avoid waiting for drives to timeout
             // some drives on linux have no actual size or are used for other purposes
@@ -605,7 +599,7 @@ namespace Emby.Server.Implementations.IO
                     Name = d.Name,
                     FullName = d.RootDirectory.FullName,
                     IsDirectory = true
-                }).ToList();
+                });
         }
 
         /// <inheritdoc />
@@ -714,6 +708,18 @@ namespace Emby.Server.Implementations.IO
             return Directory.EnumerateFileSystemEntries(path, "*", GetEnumerationOptions(recursive));
         }
 
+        /// <inheritdoc />
+        public virtual bool DirectoryExists(string path)
+        {
+            return Directory.Exists(path);
+        }
+
+        /// <inheritdoc />
+        public virtual bool FileExists(string path)
+        {
+            return File.Exists(path);
+        }
+
         private EnumerationOptions GetEnumerationOptions(bool recursive)
         {
             return new EnumerationOptions

Emby.Server.Implementations/IO/StreamHelper.cs

@@ -17,11 +17,11 @@ namespace Emby.Server.Implementations.IO
             try
             {
                 int read;
-                while ((read = await source.ReadAsync(buffer, 0, buffer.Length, cancellationToken).ConfigureAwait(false)) != 0)
+                while ((read = await source.ReadAsync(buffer, cancellationToken).ConfigureAwait(false)) != 0)
                 {
                     cancellationToken.ThrowIfCancellationRequested();
 
-                    await destination.WriteAsync(buffer, 0, read, cancellationToken).ConfigureAwait(false);
+                    await destination.WriteAsync(buffer.AsMemory(0, read), cancellationToken).ConfigureAwait(false);
 
                     if (onStarted != null)
                     {
@@ -44,11 +44,11 @@ namespace Emby.Server.Implementations.IO
                 if (emptyReadLimit <= 0)
                 {
                     int read;
-                    while ((read = await source.ReadAsync(buffer, 0, buffer.Length, cancellationToken).ConfigureAwait(false)) != 0)
+                    while ((read = await source.ReadAsync(buffer, cancellationToken).ConfigureAwait(false)) != 0)
                     {
                         cancellationToken.ThrowIfCancellationRequested();
 
-                        await destination.WriteAsync(buffer, 0, read, cancellationToken).ConfigureAwait(false);
+                        await destination.WriteAsync(buffer.AsMemory(0, read), cancellationToken).ConfigureAwait(false);
                     }
 
                     return;
@@ -60,7 +60,7 @@ namespace Emby.Server.Implementations.IO
                 {
                     cancellationToken.ThrowIfCancellationRequested();
 
-                    var bytesRead = await source.ReadAsync(buffer, 0, buffer.Length, cancellationToken).ConfigureAwait(false);
+                    var bytesRead = await source.ReadAsync(buffer, cancellationToken).ConfigureAwait(false);
 
                     if (bytesRead == 0)
                     {
@@ -71,7 +71,7 @@ namespace Emby.Server.Implementations.IO
                     {
                         eofCount = 0;
 
-                        await destination.WriteAsync(buffer, 0, bytesRead, cancellationToken).ConfigureAwait(false);
+                        await destination.WriteAsync(buffer.AsMemory(0, bytesRead), cancellationToken).ConfigureAwait(false);
                     }
                 }
             }
@@ -88,13 +88,13 @@ namespace Emby.Server.Implementations.IO
             {
                 int bytesRead;
 
-                while ((bytesRead = await source.ReadAsync(buffer, 0, buffer.Length, cancellationToken).ConfigureAwait(false)) != 0)
+                while ((bytesRead = await source.ReadAsync(buffer, cancellationToken).ConfigureAwait(false)) != 0)
                 {
                     var bytesToWrite = Math.Min(bytesRead, copyLength);
 
                     if (bytesToWrite > 0)
                     {
-                        await destination.WriteAsync(buffer, 0, Convert.ToInt32(bytesToWrite), cancellationToken).ConfigureAwait(false);
+                        await destination.WriteAsync(buffer.AsMemory(0, Convert.ToInt32(bytesToWrite)), cancellationToken).ConfigureAwait(false);
                     }
 
                     copyLength -= bytesToWrite;
@@ -137,9 +137,9 @@ namespace Emby.Server.Implementations.IO
             int bytesRead;
             int totalBytesRead = 0;
 
-            while ((bytesRead = await source.ReadAsync(buffer, 0, buffer.Length, cancellationToken).ConfigureAwait(false)) != 0)
+            while ((bytesRead = await source.ReadAsync(buffer, cancellationToken).ConfigureAwait(false)) != 0)
             {
-                await destination.WriteAsync(buffer, 0, bytesRead, cancellationToken).ConfigureAwait(false);
+                await destination.WriteAsync(buffer.AsMemory(0, bytesRead), cancellationToken).ConfigureAwait(false);
 
                 totalBytesRead += bytesRead;
             }

Emby.Server.Implementations/Images/BaseDynamicImageProvider.cs

@@ -135,7 +135,7 @@ namespace Emby.Server.Implementations.Images
 
         protected virtual IEnumerable<string> GetStripCollageImagePaths(BaseItem primaryItem, IEnumerable<BaseItem> items)
         {
-            var useBackdrop = primaryItem is CollectionFolder;
+            var useBackdrop = primaryItem is CollectionFolder || primaryItem is UserView;
             return items
                 .Select(i =>
                 {

Emby.Server.Implementations/Images/BaseFolderImageProvider.cs

@@ -22,7 +22,7 @@ namespace Emby.Server.Implementations.Images
     {
         private readonly ILibraryManager _libraryManager;
 
-        public BaseFolderImageProvider(IFileSystem fileSystem, IProviderManager providerManager, IApplicationPaths applicationPaths, IImageProcessor imageProcessor, ILibraryManager libraryManager)
+        protected BaseFolderImageProvider(IFileSystem fileSystem, IProviderManager providerManager, IApplicationPaths applicationPaths, IImageProcessor imageProcessor, ILibraryManager libraryManager)
             : base(fileSystem, providerManager, applicationPaths, imageProcessor)
         {
             _libraryManager = libraryManager;

Emby.Server.Implementations/Images/CollectionFolderImageProvider.cs

@@ -28,35 +28,39 @@ namespace Emby.Server.Implementations.Images
             var view = (CollectionFolder)item;
             var viewType = view.CollectionType;
 
-            string[] includeItemTypes;
+            BaseItemKind[] includeItemTypes;
 
             if (string.Equals(viewType, CollectionType.Movies, StringComparison.Ordinal))
             {
-                includeItemTypes = new string[] { "Movie" };
+                includeItemTypes = new[] { BaseItemKind.Movie };
             }
             else if (string.Equals(viewType, CollectionType.TvShows, StringComparison.Ordinal))
             {
-                includeItemTypes = new string[] { "Series" };
+                includeItemTypes = new[] { BaseItemKind.Series };
             }
             else if (string.Equals(viewType, CollectionType.Music, StringComparison.Ordinal))
             {
-                includeItemTypes = new string[] { "MusicAlbum" };
+                includeItemTypes = new[] { BaseItemKind.MusicAlbum };
+            }
+            else if (string.Equals(viewType, CollectionType.MusicVideos, StringComparison.Ordinal))
+            {
+                includeItemTypes = new[] { BaseItemKind.MusicVideo };
             }
             else if (string.Equals(viewType, CollectionType.Books, StringComparison.Ordinal))
             {
-                includeItemTypes = new string[] { "Book", "AudioBook" };
+                includeItemTypes = new[] { BaseItemKind.Book, BaseItemKind.AudioBook };
             }
             else if (string.Equals(viewType, CollectionType.BoxSets, StringComparison.Ordinal))
             {
-                includeItemTypes = new string[] { "BoxSet" };
+                includeItemTypes = new[] { BaseItemKind.BoxSet };
             }
             else if (string.Equals(viewType, CollectionType.HomeVideos, StringComparison.Ordinal) || string.Equals(viewType, CollectionType.Photos, StringComparison.Ordinal))
             {
-                includeItemTypes = new string[] { "Video", "Photo" };
+                includeItemTypes = new[] { BaseItemKind.Video, BaseItemKind.Photo };
             }
             else
             {
-                includeItemTypes = new string[] { "Video", "Audio", "Photo", "Movie", "Series" };
+                includeItemTypes = new[] { BaseItemKind.Video, BaseItemKind.Audio, BaseItemKind.Photo, BaseItemKind.Movie, BaseItemKind.Series };
             }
 
             var recursive = !string.Equals(CollectionType.Playlists, viewType, StringComparison.OrdinalIgnoreCase);
@@ -68,9 +72,9 @@ namespace Emby.Server.Implementations.Images
                 DtoOptions = new DtoOptions(false),
                 ImageTypes = new ImageType[] { ImageType.Primary },
                 Limit = 8,
-                OrderBy = new ValueTuple<string, SortOrder>[]
+                OrderBy = new[]
                 {
-                    new ValueTuple<string, SortOrder>(ItemSortBy.Random, SortOrder.Ascending)
+                    (ItemSortBy.Random, SortOrder.Ascending)
                 },
                 IncludeItemTypes = includeItemTypes
             });

Emby.Server.Implementations/Images/DynamicImageProvider.cs

@@ -6,6 +6,8 @@ using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using Jellyfin.Data.Enums;
+using Jellyfin.Extensions;
 using MediaBrowser.Common.Configuration;
 using MediaBrowser.Controller.Drawing;
 using MediaBrowser.Controller.Dto;
@@ -34,14 +36,14 @@ namespace Emby.Server.Implementations.Images
             var view = (UserView)item;
 
             var isUsingCollectionStrip = IsUsingCollectionStrip(view);
-            var recursive = isUsingCollectionStrip && !new[] { CollectionType.BoxSets, CollectionType.Playlists }.Contains(view.ViewType ?? string.Empty, StringComparer.OrdinalIgnoreCase);
+            var recursive = isUsingCollectionStrip && !new[] { CollectionType.BoxSets, CollectionType.Playlists }.Contains(view.ViewType ?? string.Empty, StringComparison.OrdinalIgnoreCase);
 
             var result = view.GetItemList(new InternalItemsQuery
             {
                 User = view.UserId.HasValue ? _userManager.GetUserById(view.UserId.Value) : null,
                 CollapseBoxSetItems = false,
                 Recursive = recursive,
-                ExcludeItemTypes = new[] { "UserView", "CollectionFolder", "Person" },
+                ExcludeItemTypes = new[] { BaseItemKind.UserView, BaseItemKind.CollectionFolder, BaseItemKind.Person },
                 DtoOptions = new DtoOptions(false)
             });
 
@@ -82,16 +84,20 @@ namespace Emby.Server.Implementations.Images
             }).GroupBy(x => x.Id)
             .Select(x => x.First());
 
+            List<BaseItem> returnItems;
             if (isUsingCollectionStrip)
             {
-                return items
+                returnItems = items
                     .Where(i => i.HasImage(ImageType.Primary) || i.HasImage(ImageType.Thumb))
                     .ToList();
+                returnItems.Shuffle();
+                return returnItems;
             }
-
-            return items
+            returnItems = items
                 .Where(i => i.HasImage(ImageType.Primary))
                 .ToList();
+            returnItems.Shuffle();
+            return returnItems;
         }
 
         protected override bool Supports(BaseItem item)

Emby.Server.Implementations/Images/GenreImageProvider.cs

@@ -8,8 +8,6 @@ using MediaBrowser.Common.Configuration;
 using MediaBrowser.Controller.Drawing;
 using MediaBrowser.Controller.Dto;
 using MediaBrowser.Controller.Entities;
-using MediaBrowser.Controller.Entities.Movies;
-using MediaBrowser.Controller.Entities.TV;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.Providers;
 using MediaBrowser.Model.Entities;
@@ -43,7 +41,7 @@ namespace Emby.Server.Implementations.Images
             return _libraryManager.GetItemList(new InternalItemsQuery
             {
                 Genres = new[] { item.Name },
-                IncludeItemTypes = new[] { nameof(Series), nameof(Movie) },
+                IncludeItemTypes = new[] { BaseItemKind.Series, BaseItemKind.Movie },
                 OrderBy = new[] { (ItemSortBy.Random, SortOrder.Ascending) },
                 Limit = 4,
                 Recursive = true,

Emby.Server.Implementations/Images/MusicGenreImageProvider.cs

@@ -44,9 +44,9 @@ namespace Emby.Server.Implementations.Images
                 Genres = new[] { item.Name },
                 IncludeItemTypes = new[]
                 {
-                    nameof(MusicAlbum),
-                    nameof(MusicVideo),
-                    nameof(Audio)
+                    BaseItemKind.MusicAlbum,
+                    BaseItemKind.MusicVideo,
+                    BaseItemKind.Audio
                 },
                 OrderBy = new[] { (ItemSortBy.Random, SortOrder.Ascending) },
                 Limit = 4,

Emby.Server.Implementations/Library/CoreResolutionIgnoreRule.cs

@@ -54,20 +54,10 @@ namespace Emby.Server.Implementations.Library
             {
                 if (parent != null)
                 {
-                    // Ignore trailer folders but allow it at the collection level
-                    if (string.Equals(filename, BaseItem.TrailersFolderName, StringComparison.OrdinalIgnoreCase)
-                        && !(parent is AggregateFolder)
-                        && !(parent is UserRootFolder))
-                    {
-                        return true;
-                    }
-
-                    if (string.Equals(filename, BaseItem.ThemeVideosFolderName, StringComparison.OrdinalIgnoreCase))
-                    {
-                        return true;
-                    }
-
-                    if (string.Equals(filename, BaseItem.ThemeSongsFolderName, StringComparison.OrdinalIgnoreCase))
+                    // Ignore extras folders but allow it at the collection level
+                    if (_namingOptions.AllExtrasTypesFolderNames.ContainsKey(filename)
+                        && parent is not AggregateFolder
+                        && parent is not UserRootFolder)
                     {
                         return true;
                     }

Emby.Server.Implementations/Library/LibraryManager.cs

@@ -11,14 +11,12 @@ using System.Net;
 using System.Net.Http;
 using System.Threading;
 using System.Threading.Tasks;
-using Emby.Naming.Audio;
 using Emby.Naming.Common;
 using Emby.Naming.TV;
-using Emby.Naming.Video;
 using Emby.Server.Implementations.Library.Resolvers;
 using Emby.Server.Implementations.Library.Validators;
 using Emby.Server.Implementations.Playlists;
-using Emby.Server.Implementations.ScheduledTasks;
+using Emby.Server.Implementations.ScheduledTasks.Tasks;
 using Jellyfin.Data.Entities;
 using Jellyfin.Data.Enums;
 using Jellyfin.Extensions;
@@ -47,8 +45,8 @@ using MediaBrowser.Model.IO;
 using MediaBrowser.Model.Library;
 using MediaBrowser.Model.Querying;
 using MediaBrowser.Model.Tasks;
-using MediaBrowser.Providers.MediaInfo;
 using Microsoft.Extensions.Caching.Memory;
+using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using Episode = MediaBrowser.Controller.Entities.TV.Episode;
 using EpisodeInfo = Emby.Naming.TV.EpisodeInfo;
@@ -80,6 +78,7 @@ namespace Emby.Server.Implementations.Library
         private readonly IItemRepository _itemRepository;
         private readonly IImageProcessor _imageProcessor;
         private readonly NamingOptions _namingOptions;
+        private readonly ExtraResolver _extraResolver;
 
         /// <summary>
         /// The _root folder sync lock.
@@ -101,7 +100,7 @@ namespace Emby.Server.Implementations.Library
         /// Initializes a new instance of the <see cref="LibraryManager" /> class.
         /// </summary>
         /// <param name="appHost">The application host.</param>
-        /// <param name="logger">The logger.</param>
+        /// <param name="loggerFactory">The logger factory.</param>
         /// <param name="taskManager">The task manager.</param>
         /// <param name="userManager">The user manager.</param>
         /// <param name="configurationManager">The configuration manager.</param>
@@ -117,7 +116,7 @@ namespace Emby.Server.Implementations.Library
         /// <param name="namingOptions">The naming options.</param>
         public LibraryManager(
             IServerApplicationHost appHost,
-            ILogger<LibraryManager> logger,
+            ILoggerFactory loggerFactory,
             ITaskManager taskManager,
             IUserManager userManager,
             IServerConfigurationManager configurationManager,
@@ -133,7 +132,7 @@ namespace Emby.Server.Implementations.Library
             NamingOptions namingOptions)
         {
             _appHost = appHost;
-            _logger = logger;
+            _logger = loggerFactory.CreateLogger<LibraryManager>();
             _taskManager = taskManager;
             _userManager = userManager;
             _configurationManager = configurationManager;
@@ -148,6 +147,8 @@ namespace Emby.Server.Implementations.Library
             _memoryCache = memoryCache;
             _namingOptions = namingOptions;
 
+            _extraResolver = new ExtraResolver(loggerFactory.CreateLogger<ExtraResolver>(), namingOptions);
+
             _configurationManager.ConfigurationUpdated += ConfigurationUpdated;
 
             RecordConfigurationValues(configurationManager.Configuration);
@@ -533,8 +534,8 @@ namespace Emby.Server.Implementations.Library
             return key.GetMD5();
         }
 
-        public BaseItem ResolvePath(FileSystemMetadata fileInfo, Folder parent = null)
-            => ResolvePath(fileInfo, new DirectoryService(_fileSystem), null, parent);
+        public BaseItem ResolvePath(FileSystemMetadata fileInfo, Folder parent = null, IDirectoryService directoryService = null)
+            => ResolvePath(fileInfo, directoryService ?? new DirectoryService(_fileSystem), null, parent);
 
         private BaseItem ResolvePath(
             FileSystemMetadata fileInfo,
@@ -654,7 +655,7 @@ namespace Emby.Server.Implementations.Library
             return !args.ContainsFileSystemEntryByName(".ignore");
         }
 
-        public IEnumerable<BaseItem> ResolvePaths(IEnumerable<FileSystemMetadata> files, IDirectoryService directoryService, Folder parent, LibraryOptions libraryOptions, string collectionType)
+        public IEnumerable<BaseItem> ResolvePaths(IEnumerable<FileSystemMetadata> files, IDirectoryService directoryService, Folder parent, LibraryOptions libraryOptions, string collectionType = null)
         {
             return ResolvePaths(files, directoryService, parent, libraryOptions, collectionType, EntityResolvers);
         }
@@ -677,11 +678,9 @@ namespace Emby.Server.Implementations.Library
                 {
                     var result = resolver.ResolveMultiple(parent, fileList, collectionType, directoryService);
 
-                    if (result != null && result.Items.Count > 0)
+                    if (result?.Items.Count > 0)
                     {
-                        var items = new List<BaseItem>();
-                        items.AddRange(result.Items);
-
+                        var items = result.Items;
                         foreach (var item in items)
                         {
                             ResolverHelper.SetInitialItemValues(item, parent, this, directoryService);
@@ -757,7 +756,7 @@ namespace Emby.Server.Implementations.Library
                 Path = path
             };
 
-            if (folder.Id.Equals(Guid.Empty))
+            if (folder.Id.Equals(default))
             {
                 if (string.IsNullOrEmpty(folder.Path))
                 {
@@ -776,7 +775,7 @@ namespace Emby.Server.Implementations.Library
                 folder = dbItem;
             }
 
-            if (folder.ParentId != rootFolder.Id)
+            if (!folder.ParentId.Equals(rootFolder.Id))
             {
                 folder.ParentId = rootFolder.Id;
                 folder.UpdateToRepositoryAsync(ItemUpdateType.MetadataImport, CancellationToken.None).GetAwaiter().GetResult();
@@ -965,7 +964,7 @@ namespace Emby.Server.Implementations.Library
             {
                 var existing = GetItemList(new InternalItemsQuery
                 {
-                    IncludeItemTypes = new[] { nameof(MusicArtist) },
+                    IncludeItemTypes = new[] { BaseItemKind.MusicArtist },
                     Name = name,
                     DtoOptions = options
                 }).Cast<MusicArtist>()
@@ -1006,14 +1005,8 @@ namespace Emby.Server.Implementations.Library
             return GetNewItemIdInternal(path, typeof(T), forceCaseInsensitiveId);
         }
 
-        /// <summary>
-        /// Validate and refresh the People sub-set of the IBN.
-        /// The items are stored in the db but not loaded into memory until actually requested by an operation.
-        /// </summary>
-        /// <param name="cancellationToken">The cancellation token.</param>
-        /// <param name="progress">The progress.</param>
-        /// <returns>Task.</returns>
-        public Task ValidatePeople(CancellationToken cancellationToken, IProgress<double> progress)
+        /// <inheritdoc />
+        public Task ValidatePeopleAsync(IProgress<double> progress, CancellationToken cancellationToken)
         {
             // Ensure the location is available.
             Directory.CreateDirectory(_configurationManager.ApplicationPaths.PeoplePath);
@@ -1035,15 +1028,6 @@ namespace Emby.Server.Implementations.Library
             return Task.CompletedTask;
         }
 
-        /// <summary>
-        /// Queues the library scan.
-        /// </summary>
-        public void QueueLibraryScan()
-        {
-            // Just run the scheduled task so that the user can see it
-            _taskManager.QueueScheduledTask<RefreshMediaLibraryTask>();
-        }
-
         /// <summary>
         /// Validates the media library internal.
         /// </summary>
@@ -1269,7 +1253,7 @@ namespace Emby.Server.Implementations.Library
         /// <exception cref="ArgumentNullException"><paramref name="id"/> is <c>null</c>.</exception>
         public BaseItem GetItemById(Guid id)
         {
-            if (id == Guid.Empty)
+            if (id.Equals(default))
             {
                 throw new ArgumentException("Guid can't be empty", nameof(id));
             }
@@ -1291,7 +1275,7 @@ namespace Emby.Server.Implementations.Library
 
         public List<BaseItem> GetItemList(InternalItemsQuery query, bool allowExternalContent)
         {
-            if (query.Recursive && query.ParentId != Guid.Empty)
+            if (query.Recursive && !query.ParentId.Equals(default))
             {
                 var parent = GetItemById(query.ParentId);
                 if (parent != null)
@@ -1315,7 +1299,7 @@ namespace Emby.Server.Implementations.Library
 
         public int GetCount(InternalItemsQuery query)
         {
-            if (query.Recursive && !query.ParentId.Equals(Guid.Empty))
+            if (query.Recursive && !query.ParentId.Equals(default))
             {
                 var parent = GetItemById(query.ParentId);
                 if (parent != null)
@@ -1359,10 +1343,10 @@ namespace Emby.Server.Implementations.Library
                 return _itemRepository.GetItems(query);
             }
 
-            return new QueryResult<BaseItem>
-            {
-                Items = _itemRepository.GetItemList(query)
-            };
+            return new QueryResult<BaseItem>(
+                query.StartIndex,
+                null,
+                _itemRepository.GetItemList(query));
         }
 
         public List<Guid> GetItemIds(InternalItemsQuery query)
@@ -1375,7 +1359,7 @@ namespace Emby.Server.Implementations.Library
             return _itemRepository.GetItemIdsList(query);
         }
 
-        public QueryResult<(BaseItem, ItemCounts)> GetStudios(InternalItemsQuery query)
+        public QueryResult<(BaseItem Item, ItemCounts ItemCounts)> GetStudios(InternalItemsQuery query)
         {
             if (query.User != null)
             {
@@ -1386,7 +1370,7 @@ namespace Emby.Server.Implementations.Library
             return _itemRepository.GetStudios(query);
         }
 
-        public QueryResult<(BaseItem, ItemCounts)> GetGenres(InternalItemsQuery query)
+        public QueryResult<(BaseItem Item, ItemCounts ItemCounts)> GetGenres(InternalItemsQuery query)
         {
             if (query.User != null)
             {
@@ -1397,7 +1381,7 @@ namespace Emby.Server.Implementations.Library
             return _itemRepository.GetGenres(query);
         }
 
-        public QueryResult<(BaseItem, ItemCounts)> GetMusicGenres(InternalItemsQuery query)
+        public QueryResult<(BaseItem Item, ItemCounts ItemCounts)> GetMusicGenres(InternalItemsQuery query)
         {
             if (query.User != null)
             {
@@ -1408,7 +1392,7 @@ namespace Emby.Server.Implementations.Library
             return _itemRepository.GetMusicGenres(query);
         }
 
-        public QueryResult<(BaseItem, ItemCounts)> GetAllArtists(InternalItemsQuery query)
+        public QueryResult<(BaseItem Item, ItemCounts ItemCounts)> GetAllArtists(InternalItemsQuery query)
         {
             if (query.User != null)
             {
@@ -1419,7 +1403,7 @@ namespace Emby.Server.Implementations.Library
             return _itemRepository.GetAllArtists(query);
         }
 
-        public QueryResult<(BaseItem, ItemCounts)> GetArtists(InternalItemsQuery query)
+        public QueryResult<(BaseItem Item, ItemCounts ItemCounts)> GetArtists(InternalItemsQuery query)
         {
             if (query.User != null)
             {
@@ -1443,7 +1427,7 @@ namespace Emby.Server.Implementations.Library
             for (int i = 0; i < len; i++)
             {
                 parents[i] = GetItemById(ancestorIds[i]);
-                if (!(parents[i] is ICollectionFolder || parents[i] is UserView))
+                if (parents[i] is not (ICollectionFolder or UserView))
                 {
                     return;
                 }
@@ -1460,7 +1444,7 @@ namespace Emby.Server.Implementations.Library
             }
         }
 
-        public QueryResult<(BaseItem, ItemCounts)> GetAlbumArtists(InternalItemsQuery query)
+        public QueryResult<(BaseItem Item, ItemCounts ItemCounts)> GetAlbumArtists(InternalItemsQuery query)
         {
             if (query.User != null)
             {
@@ -1473,7 +1457,7 @@ namespace Emby.Server.Implementations.Library
 
         public QueryResult<BaseItem> GetItemsResult(InternalItemsQuery query)
         {
-            if (query.Recursive && !query.ParentId.Equals(Guid.Empty))
+            if (query.Recursive && !query.ParentId.Equals(default))
             {
                 var parent = GetItemById(query.ParentId);
                 if (parent != null)
@@ -1492,10 +1476,10 @@ namespace Emby.Server.Implementations.Library
                 return _itemRepository.GetItems(query);
             }
 
-            return new QueryResult<BaseItem>
-            {
-                Items = _itemRepository.GetItemList(query)
-            };
+            return new QueryResult<BaseItem>(
+                query.StartIndex,
+                null,
+                _itemRepository.GetItemList(query));
         }
 
         private void SetTopParentIdsOrAncestors(InternalItemsQuery query, List<BaseItem> parents)
@@ -1529,7 +1513,7 @@ namespace Emby.Server.Implementations.Library
         private void AddUserToQuery(InternalItemsQuery query, User user, bool allowExternalContent = true)
         {
             if (query.AncestorIds.Length == 0 &&
-                query.ParentId.Equals(Guid.Empty) &&
+                query.ParentId.Equals(default) &&
                 query.ChannelIds.Count == 0 &&
                 query.TopParentIds.Length == 0 &&
                 string.IsNullOrEmpty(query.AncestorWithPresentationUniqueKey) &&
@@ -1557,7 +1541,7 @@ namespace Emby.Server.Implementations.Library
                 }
 
                 // Translate view into folders
-                if (!view.DisplayParentId.Equals(Guid.Empty))
+                if (!view.DisplayParentId.Equals(default))
                 {
                     var displayParent = GetItemById(view.DisplayParentId);
                     if (displayParent != null)
@@ -1568,7 +1552,7 @@ namespace Emby.Server.Implementations.Library
                     return Array.Empty<Guid>();
                 }
 
-                if (!view.ParentId.Equals(Guid.Empty))
+                if (!view.ParentId.Equals(default))
                 {
                     var displayParent = GetItemById(view.ParentId);
                     if (displayParent != null)
@@ -1649,27 +1633,6 @@ namespace Emby.Server.Implementations.Library
             }
         }
 
-        /// <summary>
-        /// Gets all intro files.
-        /// </summary>
-        /// <returns>IEnumerable{System.String}.</returns>
-        public IEnumerable<string> GetAllIntroFiles()
-        {
-            return IntroProviders.SelectMany(i =>
-            {
-                try
-                {
-                    return i.GetAllIntroFiles().ToList();
-                }
-                catch (Exception ex)
-                {
-                    _logger.LogError(ex, "Error getting intro files");
-
-                    return new List<string>();
-                }
-            });
-        }
-
         /// <summary>
         /// Resolves the intro.
         /// </summary>
@@ -1759,7 +1722,7 @@ namespace Emby.Server.Implementations.Library
             return orderedItems ?? items;
         }
 
-        public IEnumerable<BaseItem> Sort(IEnumerable<BaseItem> items, User user, IEnumerable<ValueTuple<string, SortOrder>> orderBy)
+        public IEnumerable<BaseItem> Sort(IEnumerable<BaseItem> items, User user, IEnumerable<(string OrderBy, SortOrder SortOrder)> orderBy)
         {
             var isFirst = true;
 
@@ -1897,7 +1860,9 @@ namespace Emby.Server.Implementations.Library
                 throw new ArgumentNullException(nameof(item));
             }
 
-            var outdated = forceUpdate ? item.ImageInfos.Where(i => i.Path != null).ToArray() : item.ImageInfos.Where(ImageNeedsRefresh).ToArray();
+            var outdated = forceUpdate
+                ? item.ImageInfos.Where(i => i.Path != null).ToArray()
+                : item.ImageInfos.Where(ImageNeedsRefresh).ToArray();
             // Skip image processing if current or live tv source
             if (outdated.Length == 0 || item.SourceType != SourceType.Library)
             {
@@ -1920,7 +1885,7 @@ namespace Emby.Server.Implementations.Library
                         _logger.LogWarning("Cannot get image index for {ImagePath}", img.Path);
                         continue;
                     }
-                    catch (Exception ex) when (ex is InvalidOperationException || ex is IOException)
+                    catch (Exception ex) when (ex is InvalidOperationException or IOException)
                     {
                         _logger.LogWarning(ex, "Cannot fetch image from {ImagePath}", img.Path);
                         continue;
@@ -1932,23 +1897,24 @@ namespace Emby.Server.Implementations.Library
                     }
                 }
 
+                ImageDimensions size;
                 try
                 {
-                    ImageDimensions size = _imageProcessor.GetImageDimensions(item, image);
+                    size = _imageProcessor.GetImageDimensions(item, image);
                     image.Width = size.Width;
                     image.Height = size.Height;
                 }
                 catch (Exception ex)
                 {
                     _logger.LogError(ex, "Cannot get image dimensions for {ImagePath}", image.Path);
+                    size = new ImageDimensions(0, 0);
                     image.Width = 0;
                     image.Height = 0;
-                    continue;
                 }
 
                 try
                 {
-                    image.BlurHash = _imageProcessor.GetImageBlurHash(image.Path);
+                    image.BlurHash = _imageProcessor.GetImageBlurHash(image.Path, size);
                 }
                 catch (Exception ex)
                 {
@@ -2013,16 +1979,16 @@ namespace Emby.Server.Implementations.Library
         public Task UpdateItemAsync(BaseItem item, BaseItem parent, ItemUpdateType updateReason, CancellationToken cancellationToken)
             => UpdateItemsAsync(new[] { item }, parent, updateReason, cancellationToken);
 
-        public Task RunMetadataSavers(BaseItem item, ItemUpdateType updateReason)
+        public async Task RunMetadataSavers(BaseItem item, ItemUpdateType updateReason)
         {
             if (item.IsFileProtocol)
             {
-                ProviderManager.SaveMetadata(item, updateReason);
+                await ProviderManager.SaveMetadataAsync(item, updateReason).ConfigureAwait(false);
             }
 
             item.DateLastSaved = DateTime.UtcNow;
 
-            return UpdateImagesAsync(item, updateReason >= ItemUpdateType.ImageUpdate);
+            await UpdateImagesAsync(item, updateReason >= ItemUpdateType.ImageUpdate).ConfigureAwait(false);
         }
 
         /// <summary>
@@ -2191,7 +2157,7 @@ namespace Emby.Server.Implementations.Library
                 return null;
             }
 
-            while (!item.ParentId.Equals(Guid.Empty))
+            while (!item.ParentId.Equals(default))
             {
                 var parent = item.GetParent();
                 if (parent == null || parent is AggregateFolder)
@@ -2269,7 +2235,9 @@ namespace Emby.Server.Implementations.Library
             string viewType,
             string sortName)
         {
-            var parentIdString = parentId.Equals(Guid.Empty) ? null : parentId.ToString("N", CultureInfo.InvariantCulture);
+            var parentIdString = parentId.Equals(default)
+                ? null
+                : parentId.ToString("N", CultureInfo.InvariantCulture);
             var idValues = "38_namedview_" + name + user.Id.ToString("N", CultureInfo.InvariantCulture) + (parentIdString ?? string.Empty) + (viewType ?? string.Empty);
 
             var id = GetNewItemId(idValues, typeof(UserView));
@@ -2303,7 +2271,7 @@ namespace Emby.Server.Implementations.Library
 
             var refresh = isNew || DateTime.UtcNow - item.DateLastRefreshed >= _viewRefreshInterval;
 
-            if (!refresh && !item.DisplayParentId.Equals(Guid.Empty))
+            if (!refresh && !item.DisplayParentId.Equals(default))
             {
                 var displayParent = GetItemById(item.DisplayParentId);
                 refresh = displayParent != null && displayParent.DateLastSaved > item.DateLastRefreshed;
@@ -2370,7 +2338,7 @@ namespace Emby.Server.Implementations.Library
 
             var refresh = isNew || DateTime.UtcNow - item.DateLastRefreshed >= _viewRefreshInterval;
 
-            if (!refresh && !item.DisplayParentId.Equals(Guid.Empty))
+            if (!refresh && !item.DisplayParentId.Equals(default))
             {
                 var displayParent = GetItemById(item.DisplayParentId);
                 refresh = displayParent != null && displayParent.DateLastSaved > item.DateLastRefreshed;
@@ -2403,7 +2371,9 @@ namespace Emby.Server.Implementations.Library
                 throw new ArgumentNullException(nameof(name));
             }
 
-            var parentIdString = parentId.Equals(Guid.Empty) ? null : parentId.ToString("N", CultureInfo.InvariantCulture);
+            var parentIdString = parentId.Equals(default)
+                ? null
+                : parentId.ToString("N", CultureInfo.InvariantCulture);
             var idValues = "37_namedview_" + name + (parentIdString ?? string.Empty) + (viewType ?? string.Empty);
             if (!string.IsNullOrEmpty(uniqueId))
             {
@@ -2447,7 +2417,7 @@ namespace Emby.Server.Implementations.Library
 
             var refresh = isNew || DateTime.UtcNow - item.DateLastRefreshed >= _viewRefreshInterval;
 
-            if (!refresh && !item.DisplayParentId.Equals(Guid.Empty))
+            if (!refresh && !item.DisplayParentId.Equals(default))
             {
                 var displayParent = GetItemById(item.DisplayParentId);
                 refresh = displayParent != null && displayParent.DateLastSaved > item.DateLastRefreshed;
@@ -2468,24 +2438,6 @@ namespace Emby.Server.Implementations.Library
             return item;
         }
 
-        public void AddExternalSubtitleStreams(
-            List<MediaStream> streams,
-            string videoPath,
-            string[] files)
-        {
-            new SubtitleResolver(BaseItem.LocalizationManager).AddExternalSubtitleStreams(streams, videoPath, streams.Count, files);
-        }
-
-        public BaseItem GetParentItem(string parentId, Guid? userId)
-        {
-            if (string.IsNullOrEmpty(parentId))
-            {
-                return GetParentItem((Guid?)null, userId);
-            }
-
-            return GetParentItem(new Guid(parentId), userId);
-        }
-
         public BaseItem GetParentItem(Guid? parentId, Guid? userId)
         {
             if (parentId.HasValue)
@@ -2493,7 +2445,7 @@ namespace Emby.Server.Implementations.Library
                 return GetItemById(parentId.Value);
             }
 
-            if (userId.HasValue && userId != Guid.Empty)
+            if (userId.HasValue && !userId.Equals(default))
             {
                 return GetUserRootFolder();
             }
@@ -2501,6 +2453,12 @@ namespace Emby.Server.Implementations.Library
             return RootFolder;
         }
 
+        /// <inheritdoc />
+        public void QueueLibraryScan()
+        {
+            _taskManager.QueueScheduledTask<RefreshMediaLibraryTask>();
+        }
+
         /// <inheritdoc />
         public int? GetSeasonNumberFromPath(string path)
             => SeasonPathParser.Parse(path, true, true).SeasonNumber;
@@ -2680,94 +2638,70 @@ namespace Emby.Server.Implementations.Library
 
             return new ItemLookupInfo
             {
-                Name = VideoResolver.TryCleanString(result.Name, namingOptions, out var newName) ? newName.ToString() : result.Name,
+                Name = VideoResolver.TryCleanString(result.Name, namingOptions, out var newName) ? newName : result.Name,
                 Year = result.Year
             };
         }
 
-        public IEnumerable<Video> FindTrailers(BaseItem owner, List<FileSystemMetadata> fileSystemChildren, IDirectoryService directoryService)
+        public IEnumerable<BaseItem> FindExtras(BaseItem owner, IReadOnlyList<FileSystemMetadata> fileSystemChildren, IDirectoryService directoryService)
         {
-            var namingOptions = _namingOptions;
-
-            var files = owner.IsInMixedFolder ? new List<FileSystemMetadata>() : fileSystemChildren.Where(i => i.IsDirectory)
-                .Where(i => string.Equals(i.Name, BaseItem.TrailersFolderName, StringComparison.OrdinalIgnoreCase))
-                .SelectMany(i => _fileSystem.GetFiles(i.FullName, namingOptions.VideoFileExtensions, false, false))
-                .ToList();
-
-            var videos = VideoListResolver.Resolve(fileSystemChildren, namingOptions);
-
-            var currentVideo = videos.FirstOrDefault(i => string.Equals(owner.Path, i.Files[0].Path, StringComparison.OrdinalIgnoreCase));
-
-            if (currentVideo != null)
+            var ownerVideoInfo = VideoResolver.Resolve(owner.Path, owner.IsFolder, _namingOptions);
+            if (ownerVideoInfo == null)
             {
-                files.AddRange(currentVideo.Extras.Where(i => i.ExtraType == ExtraType.Trailer).Select(i => _fileSystem.GetFileInfo(i.Path)));
+                yield break;
             }
 
-            var resolvers = new IItemResolver[]
+            var count = fileSystemChildren.Count;
+            for (var i = 0; i < count; i++)
             {
-                new GenericVideoResolver<Trailer>(_namingOptions)
-            };
-
-            return ResolvePaths(files, directoryService, null, new LibraryOptions(), null, resolvers)
-                .OfType<Trailer>()
-                .Select(video =>
+                var current = fileSystemChildren[i];
+                if (current.IsDirectory && _namingOptions.AllExtrasTypesFolderNames.ContainsKey(current.Name))
                 {
-                    // Try to retrieve it from the db. If we don't find it, use the resolved version
-                    if (GetItemById(video.Id) is Trailer dbItem)
+                    var filesInSubFolder = _fileSystem.GetFiles(current.FullName, null, false, false);
+                    foreach (var file in filesInSubFolder)
                     {
-                        video = dbItem;
+                        if (!_extraResolver.TryGetExtraTypeForOwner(file.FullName, ownerVideoInfo, out var extraType))
+                        {
+                            continue;
+                        }
+
+                        var extra = GetExtra(file, extraType.Value);
+                        if (extra != null)
+                        {
+                            yield return extra;
+                        }
                     }
-
-                    video.ParentId = Guid.Empty;
-                    video.OwnerId = owner.Id;
-                    video.ExtraType = ExtraType.Trailer;
-                    video.TrailerTypes = new[] { TrailerType.LocalTrailer };
-
-                    return video;
-
-                    // Sort them so that the list can be easily compared for changes
-                }).OrderBy(i => i.Path);
-        }
-
-        public IEnumerable<Video> FindExtras(BaseItem owner, List<FileSystemMetadata> fileSystemChildren, IDirectoryService directoryService)
-        {
-            var namingOptions = _namingOptions;
-
-            var files = owner.IsInMixedFolder ? new List<FileSystemMetadata>() : fileSystemChildren.Where(i => i.IsDirectory)
-                .Where(i => BaseItem.AllExtrasTypesFolderNames.ContainsKey(i.Name ?? string.Empty))
-                .SelectMany(i => _fileSystem.GetFiles(i.FullName, namingOptions.VideoFileExtensions, false, false))
-                .ToList();
-
-            var videos = VideoListResolver.Resolve(fileSystemChildren, namingOptions);
-
-            var currentVideo = videos.FirstOrDefault(i => string.Equals(owner.Path, i.Files[0].Path, StringComparison.OrdinalIgnoreCase));
-
-            if (currentVideo != null)
-            {
-                files.AddRange(currentVideo.Extras.Where(i => i.ExtraType != ExtraType.Trailer).Select(i => _fileSystem.GetFileInfo(i.Path)));
+                }
+                else if (!current.IsDirectory && _extraResolver.TryGetExtraTypeForOwner(current.FullName, ownerVideoInfo, out var extraType))
+                {
+                    var extra = GetExtra(current, extraType.Value);
+                    if (extra != null)
+                    {
+                        yield return extra;
+                    }
+                }
             }
 
-            return ResolvePaths(files, directoryService, null, new LibraryOptions(), null)
-                .OfType<Video>()
-                .Select(video =>
+            BaseItem GetExtra(FileSystemMetadata file, ExtraType extraType)
+            {
+                var extra = ResolvePath(_fileSystem.GetFileInfo(file.FullName), directoryService, _extraResolver.GetResolversForExtraType(extraType));
+                if (extra is not Video && extra is not Audio)
                 {
-                    // Try to retrieve it from the db. If we don't find it, use the resolved version
-                    var dbItem = GetItemById(video.Id) as Video;
+                    return null;
+                }
 
-                    if (dbItem != null)
-                    {
-                        video = dbItem;
-                    }
+                // Try to retrieve it from the db. If we don't find it, use the resolved version
+                var itemById = GetItemById(extra.Id);
+                if (itemById != null)
+                {
+                    extra = itemById;
+                }
 
-                    video.ParentId = Guid.Empty;
-                    video.OwnerId = owner.Id;
-
-                    SetExtraTypeFromFilename(video);
-
-                    return video;
-
-                    // Sort them so that the list can be easily compared for changes
-                }).OrderBy(i => i.Path);
+                extra.ExtraType = extraType;
+                extra.ParentId = Guid.Empty;
+                extra.OwnerId = owner.Id;
+                return extra;
+            }
         }
 
         public string GetPathAfterNetworkSubstitution(string path, BaseItem ownerItem)
@@ -2807,25 +2741,6 @@ namespace Emby.Server.Implementations.Library
             return path;
         }
 
-        public string SubstitutePath(string path, string from, string to)
-        {
-            if (path.TryReplaceSubPath(from, to, out var newPath))
-            {
-                return newPath;
-            }
-
-            return path;
-        }
-
-        private void SetExtraTypeFromFilename(Video item)
-        {
-            var resolver = new ExtraResolver(_namingOptions);
-
-            var result = resolver.GetExtraInfo(item.Path);
-
-            item.ExtraType = result.ExtraType;
-        }
-
         public List<PersonInfo> GetPeople(InternalPeopleQuery query)
         {
             return _itemRepository.GetPeople(query);
@@ -2851,7 +2766,8 @@ namespace Emby.Server.Implementations.Library
 
         public List<Person> GetPeopleItems(InternalPeopleQuery query)
         {
-            return _itemRepository.GetPeopleNames(query).Select(i =>
+            return _itemRepository.GetPeopleNames(query)
+            .Select(i =>
             {
                 try
                 {
@@ -2862,7 +2778,12 @@ namespace Emby.Server.Implementations.Library
                     _logger.LogError(ex, "Error getting person");
                     return null;
                 }
-            }).Where(i => i != null).ToList();
+            })
+            .Where(i => i != null)
+            .Where(i => query.User == null ? 
+                true :
+                i.IsVisible(query.User))
+            .ToList();
         }
 
         public List<string> GetPeopleNames(InternalPeopleQuery query)
@@ -2932,10 +2853,13 @@ namespace Emby.Server.Implementations.Library
 
             var rootFolderPath = _configurationManager.ApplicationPaths.DefaultUserViewsPath;
 
+            var existingNameCount = 1; // first numbered name will be 2
             var virtualFolderPath = Path.Combine(rootFolderPath, name);
+            var originalName = name;
             while (Directory.Exists(virtualFolderPath))
             {
-                name += "1";
+                existingNameCount++;
+                name = originalName + existingNameCount;
                 virtualFolderPath = Path.Combine(rootFolderPath, name);
             }
 
@@ -3038,7 +2962,10 @@ namespace Emby.Server.Implementations.Library
                 }
             }
 
-            CreateItems(personsToSave, null, CancellationToken.None);
+            if (personsToSave.Count > 0)
+            {
+                CreateItems(personsToSave, null, CancellationToken.None);
+            }
         }
 
         private void StartScanInBackground()

Emby.Server.Implementations/Library/LiveStreamHelper.cs

@@ -66,11 +66,8 @@ namespace Emby.Server.Implementations.Library
                 {
                     var delayMs = mediaSource.AnalyzeDurationMs ?? 0;
                     delayMs = Math.Max(3000, delayMs);
-                    if (delayMs > 0)
-                    {
-                        _logger.LogInformation("Waiting {0}ms before probing the live stream", delayMs);
-                        await Task.Delay(delayMs, cancellationToken).ConfigureAwait(false);
-                    }
+                    _logger.LogInformation("Waiting {0}ms before probing the live stream", delayMs);
+                    await Task.Delay(delayMs, cancellationToken).ConfigureAwait(false);
                 }
 
                 mediaSource.AnalyzeDurationMs = 3000;

Emby.Server.Implementations/Library/MediaSourceManager.cs

@@ -151,7 +151,11 @@ namespace Emby.Server.Implementations.Library
         {
             var mediaSources = GetStaticMediaSources(item, enablePathSubstitution, user);
 
-            if (allowMediaProbe && mediaSources[0].Type != MediaSourceType.Placeholder && !mediaSources[0].MediaStreams.Any(i => i.Type == MediaStreamType.Audio || i.Type == MediaStreamType.Video))
+            // If file is strm or main media stream is missing, force a metadata refresh with remote probing
+            if (allowMediaProbe && mediaSources[0].Type != MediaSourceType.Placeholder
+                && (item.Path.EndsWith(".strm", StringComparison.OrdinalIgnoreCase)
+                    || (item.MediaType == MediaType.Video && !mediaSources[0].MediaStreams.Any(i => i.Type == MediaStreamType.Video))
+                    || (item.MediaType == MediaType.Audio && !mediaSources[0].MediaStreams.Any(i => i.Type == MediaStreamType.Audio))))
             {
                 await item.RefreshMetadata(
                     new MetadataRefreshOptions(_directoryService)
@@ -172,24 +176,16 @@ namespace Emby.Server.Implementations.Library
 
             foreach (var source in dynamicMediaSources)
             {
-                if (user != null)
-                {
-                    SetDefaultAudioAndSubtitleStreamIndexes(item, source, user);
-                }
-
                 // Validate that this is actually possible
                 if (source.SupportsDirectStream)
                 {
                     source.SupportsDirectStream = SupportsDirectStream(source.Path, source.Protocol);
                 }
 
-                list.Add(source);
-            }
-
-            if (user != null)
-            {
-                foreach (var source in list)
+                if (user != null)
                 {
+                    SetDefaultAudioAndSubtitleStreamIndexes(item, source, user);
+
                     if (string.Equals(item.MediaType, MediaType.Audio, StringComparison.OrdinalIgnoreCase))
                     {
                         source.SupportsTranscoding = user.HasPermission(PermissionKind.EnableAudioPlaybackTranscoding);
@@ -200,6 +196,8 @@ namespace Emby.Server.Implementations.Library
                         source.SupportsDirectStream = user.HasPermission(PermissionKind.EnablePlaybackRemuxing);
                     }
                 }
+
+                list.Add(source);
             }
 
             return SortMediaSources(list);
@@ -338,13 +336,23 @@ namespace Emby.Server.Implementations.Library
                 foreach (var source in sources)
                 {
                     SetDefaultAudioAndSubtitleStreamIndexes(item, source, user);
+
+                    if (string.Equals(item.MediaType, MediaType.Audio, StringComparison.OrdinalIgnoreCase))
+                    {
+                        source.SupportsTranscoding = user.HasPermission(PermissionKind.EnableAudioPlaybackTranscoding);
+                    }
+                    else if (string.Equals(item.MediaType, MediaType.Video, StringComparison.OrdinalIgnoreCase))
+                    {
+                        source.SupportsTranscoding = user.HasPermission(PermissionKind.EnableVideoPlaybackTranscoding);
+                        source.SupportsDirectStream = user.HasPermission(PermissionKind.EnablePlaybackRemuxing);
+                    }
                 }
             }
 
             return sources;
         }
 
-        private string[] NormalizeLanguage(string language)
+        private IReadOnlyList<string> NormalizeLanguage(string language)
         {
             if (string.IsNullOrEmpty(language))
             {
@@ -464,12 +472,11 @@ namespace Emby.Server.Implementations.Library
 
             try
             {
-                var tuple = GetProvider(request.OpenToken);
-                var provider = tuple.Item1;
+                var (provider, keyId) = GetProvider(request.OpenToken);
 
                 var currentLiveStreams = _openStreams.Values.ToList();
 
-                liveStream = await provider.OpenMediaSource(tuple.Item2, currentLiveStreams, cancellationToken).ConfigureAwait(false);
+                liveStream = await provider.OpenMediaSource(keyId, currentLiveStreams, cancellationToken).ConfigureAwait(false);
 
                 mediaSource = liveStream.MediaSource;
 
@@ -515,10 +522,10 @@ namespace Emby.Server.Implementations.Library
             _logger.LogInformation("Live stream opened: {@MediaSource}", mediaSource);
             var clone = JsonSerializer.Deserialize<MediaSourceInfo>(json, _jsonOptions);
 
-            if (!request.UserId.Equals(Guid.Empty))
+            if (!request.UserId.Equals(default))
             {
                 var user = _userManager.GetUserById(request.UserId);
-                var item = request.ItemId.Equals(Guid.Empty)
+                var item = request.ItemId.Equals(default)
                     ? null
                     : _libraryManager.GetItemById(request.ItemId);
                 SetDefaultAudioAndSubtitleStreamIndexes(item, clone, user);
@@ -829,7 +836,7 @@ namespace Emby.Server.Implementations.Library
             }
         }
 
-        private (IMediaSourceProvider, string) GetProvider(string key)
+        private (IMediaSourceProvider MediaSourceProvider, string KeyId) GetProvider(string key)
         {
             if (string.IsNullOrEmpty(key))
             {

Emby.Server.Implementations/Library/MediaStreamSelector.cs

@@ -1,25 +1,23 @@
-#nullable disable
-
 #pragma warning disable CS1591
 
 using System;
 using System.Collections.Generic;
 using System.Linq;
 using Jellyfin.Data.Enums;
+using Jellyfin.Extensions;
 using MediaBrowser.Model.Entities;
 
 namespace Emby.Server.Implementations.Library
 {
     public static class MediaStreamSelector
     {
-        public static int? GetDefaultAudioStreamIndex(List<MediaStream> streams, string[] preferredLanguages, bool preferDefaultTrack)
+        public static int? GetDefaultAudioStreamIndex(IReadOnlyList<MediaStream> streams, IReadOnlyList<string> preferredLanguages, bool preferDefaultTrack)
         {
-            streams = GetSortedStreams(streams, MediaStreamType.Audio, preferredLanguages)
-               .ToList();
+            var sortedStreams = GetSortedStreams(streams, MediaStreamType.Audio, preferredLanguages).ToList();
 
             if (preferDefaultTrack)
             {
-                var defaultStream = streams.FirstOrDefault(i => i.IsDefault);
+                var defaultStream = sortedStreams.FirstOrDefault(i => i.IsDefault);
 
                 if (defaultStream != null)
                 {
@@ -27,24 +25,15 @@ namespace Emby.Server.Implementations.Library
                 }
             }
 
-            var stream = streams.FirstOrDefault();
-
-            if (stream != null)
-            {
-                return stream.Index;
-            }
-
-            return null;
+            return sortedStreams.FirstOrDefault()?.Index;
         }
 
         public static int? GetDefaultSubtitleStreamIndex(
             IEnumerable<MediaStream> streams,
-            string[] preferredLanguages,
+            IReadOnlyList<string> preferredLanguages,
             SubtitlePlaybackMode mode,
             string audioTrackLanguage)
         {
-            MediaStream stream = null;
-
             if (mode == SubtitlePlaybackMode.None)
             {
                 return null;
@@ -58,24 +47,25 @@ namespace Emby.Server.Implementations.Library
                 .ThenByDescending(x => x.IsDefault)
                 .ToList();
 
+            MediaStream? stream = null;
             if (mode == SubtitlePlaybackMode.Default)
             {
                 // Prefer embedded metadata over smart logic
                 stream = sortedStreams.FirstOrDefault(s => s.IsExternal || s.IsForced || s.IsDefault);
 
                 // if the audio language is not understood by the user, load their preferred subs, if there are any
-                if (stream == null && !preferredLanguages.Contains(audioTrackLanguage, StringComparer.OrdinalIgnoreCase))
+                if (stream == null && !preferredLanguages.Contains(audioTrackLanguage, StringComparison.OrdinalIgnoreCase))
                 {
-                    stream = sortedStreams.FirstOrDefault(s => !s.IsForced && preferredLanguages.Contains(s.Language, StringComparer.OrdinalIgnoreCase));
+                    stream = sortedStreams.FirstOrDefault(s => !s.IsForced && preferredLanguages.Contains(s.Language, StringComparison.OrdinalIgnoreCase));
                 }
             }
             else if (mode == SubtitlePlaybackMode.Smart)
             {
                 // if the audio language is not understood by the user, load their preferred subs, if there are any
-                if (!preferredLanguages.Contains(audioTrackLanguage, StringComparer.OrdinalIgnoreCase))
+                if (!preferredLanguages.Contains(audioTrackLanguage, StringComparison.OrdinalIgnoreCase))
                 {
-                    stream = streams.FirstOrDefault(s => !s.IsForced && preferredLanguages.Contains(s.Language, StringComparer.OrdinalIgnoreCase)) ??
-                        streams.FirstOrDefault(s => preferredLanguages.Contains(s.Language, StringComparer.OrdinalIgnoreCase));
+                    stream = streams.FirstOrDefault(s => !s.IsForced && preferredLanguages.Contains(s.Language, StringComparison.OrdinalIgnoreCase)) ??
+                        streams.FirstOrDefault(s => preferredLanguages.Contains(s.Language, StringComparison.OrdinalIgnoreCase));
                 }
             }
             else if (mode == SubtitlePlaybackMode.Always)
@@ -94,26 +84,27 @@ namespace Emby.Server.Implementations.Library
             return stream?.Index;
         }
 
-        private static IEnumerable<MediaStream> GetSortedStreams(IEnumerable<MediaStream> streams, MediaStreamType type, string[] languagePreferences)
+        private static IEnumerable<MediaStream> GetSortedStreams(IEnumerable<MediaStream> streams, MediaStreamType type, IReadOnlyList<string> languagePreferences)
         {
             // Give some preference to external text subs for better performance
-            return streams.Where(i => i.Type == type)
+            return streams
+                .Where(i => i.Type == type)
                 .OrderBy(i =>
-            {
-                var index = FindIndex(languagePreferences, i.Language);
+                {
+                    var index = languagePreferences.FindIndex(x => string.Equals(x, i.Language, StringComparison.OrdinalIgnoreCase));
 
-                return index == -1 ? 100 : index;
-            })
-                 .ThenBy(i => GetBooleanOrderBy(i.IsDefault))
-                 .ThenBy(i => GetBooleanOrderBy(i.SupportsExternalStream))
-                 .ThenBy(i => GetBooleanOrderBy(i.IsTextSubtitleStream))
-                 .ThenBy(i => GetBooleanOrderBy(i.IsExternal))
-                 .ThenBy(i => i.Index);
+                    return index == -1 ? 100 : index;
+                })
+                .ThenBy(i => GetBooleanOrderBy(i.IsDefault))
+                .ThenBy(i => GetBooleanOrderBy(i.SupportsExternalStream))
+                .ThenBy(i => GetBooleanOrderBy(i.IsTextSubtitleStream))
+                .ThenBy(i => GetBooleanOrderBy(i.IsExternal))
+                .ThenBy(i => i.Index);
         }
 
         public static void SetSubtitleStreamScores(
-            List<MediaStream> streams,
-            string[] preferredLanguages,
+            IReadOnlyList<MediaStream> streams,
+            IReadOnlyList<string> preferredLanguages,
             SubtitlePlaybackMode mode,
             string audioTrackLanguage)
         {
@@ -122,70 +113,52 @@ namespace Emby.Server.Implementations.Library
                 return;
             }
 
-            streams = GetSortedStreams(streams, MediaStreamType.Subtitle, preferredLanguages)
-                .ToList();
+            var sortedStreams = GetSortedStreams(streams, MediaStreamType.Subtitle, preferredLanguages);
 
             var filteredStreams = new List<MediaStream>();
 
             if (mode == SubtitlePlaybackMode.Default)
             {
                 // Prefer embedded metadata over smart logic
-                filteredStreams = streams.Where(s => s.IsForced || s.IsDefault)
+                filteredStreams = sortedStreams.Where(s => s.IsForced || s.IsDefault)
                     .ToList();
             }
             else if (mode == SubtitlePlaybackMode.Smart)
             {
                 // Prefer smart logic over embedded metadata
-                if (!preferredLanguages.Contains(audioTrackLanguage, StringComparer.OrdinalIgnoreCase))
+                if (!preferredLanguages.Contains(audioTrackLanguage, StringComparison.OrdinalIgnoreCase))
                 {
-                    filteredStreams = streams.Where(s => !s.IsForced && preferredLanguages.Contains(s.Language, StringComparer.OrdinalIgnoreCase))
+                    filteredStreams = sortedStreams.Where(s => !s.IsForced && preferredLanguages.Contains(s.Language, StringComparison.OrdinalIgnoreCase))
                         .ToList();
                 }
             }
             else if (mode == SubtitlePlaybackMode.Always)
             {
                 // always load the most suitable full subtitles
-                filteredStreams = streams.Where(s => !s.IsForced)
-                    .ToList();
+                filteredStreams = sortedStreams.Where(s => !s.IsForced).ToList();
             }
             else if (mode == SubtitlePlaybackMode.OnlyForced)
             {
                 // always load the most suitable full subtitles
-                filteredStreams = streams.Where(s => s.IsForced).ToList();
+                filteredStreams = sortedStreams.Where(s => s.IsForced).ToList();
             }
 
             // load forced subs if we have found no suitable full subtitles
-            if (filteredStreams.Count == 0)
-            {
-                filteredStreams = streams
-                    .Where(s => s.IsForced && string.Equals(s.Language, audioTrackLanguage, StringComparison.OrdinalIgnoreCase))
-                    .ToList();
-            }
+            var iterStreams = filteredStreams.Count == 0
+                ? sortedStreams.Where(s => s.IsForced && string.Equals(s.Language, audioTrackLanguage, StringComparison.OrdinalIgnoreCase))
+                : filteredStreams;
 
-            foreach (var stream in filteredStreams)
+            foreach (var stream in iterStreams)
             {
                 stream.Score = GetSubtitleScore(stream, preferredLanguages);
             }
         }
 
-        private static int FindIndex(string[] list, string value)
-        {
-            for (var i = 0; i < list.Length; i++)
-            {
-                if (string.Equals(list[i], value, StringComparison.OrdinalIgnoreCase))
-                {
-                    return i;
-                }
-            }
-
-            return -1;
-        }
-
-        private static int GetSubtitleScore(MediaStream stream, string[] languagePreferences)
+        private static int GetSubtitleScore(MediaStream stream, IReadOnlyList<string> languagePreferences)
         {
             var values = new List<int>();
 
-            var index = FindIndex(languagePreferences, stream.Language);
+            var index = languagePreferences.FindIndex(x => string.Equals(x, stream.Language, StringComparison.OrdinalIgnoreCase));
 
             values.Add(index == -1 ? 0 : 100 - index);
 

Emby.Server.Implementations/Library/MusicManager.cs

@@ -52,7 +52,7 @@ namespace Emby.Server.Implementations.Library
             var genres = item
                .GetRecursiveChildren(user, new InternalItemsQuery(user)
                {
-                   IncludeItemTypes = new[] { nameof(Audio) },
+                   IncludeItemTypes = new[] { BaseItemKind.Audio },
                    DtoOptions = dtoOptions
                })
                .Cast<Audio>()
@@ -80,7 +80,7 @@ namespace Emby.Server.Implementations.Library
                 {
                     return Guid.Empty;
                 }
-            }).Where(i => !i.Equals(Guid.Empty)).ToArray();
+            }).Where(i => !i.Equals(default)).ToArray();
 
             return GetInstantMixFromGenreIds(genreIds, user, dtoOptions);
         }
@@ -89,7 +89,7 @@ namespace Emby.Server.Implementations.Library
         {
             return _libraryManager.GetItemList(new InternalItemsQuery(user)
             {
-                IncludeItemTypes = new[] { nameof(Audio) },
+                IncludeItemTypes = new[] { BaseItemKind.Audio },
 
                 GenreIds = genreIds.ToArray(),
 
@@ -103,7 +103,7 @@ namespace Emby.Server.Implementations.Library
 
         public List<BaseItem> GetInstantMixFromItem(BaseItem item, User user, DtoOptions dtoOptions)
         {
-            if (item is MusicGenre genre)
+            if (item is MusicGenre)
             {
                 return GetInstantMixFromGenreIds(new[] { item.Id }, user, dtoOptions);
             }

Emby.Server.Implementations/Library/PathExtensions.cs

@@ -16,7 +16,7 @@ namespace Emby.Server.Implementations.Library
         /// <param name="attribute">The attrib.</param>
         /// <returns>System.String.</returns>
         /// <exception cref="ArgumentException"><paramref name="str" /> or <paramref name="attribute" /> is empty.</exception>
-        public static string? GetAttributeValue(this string str, string attribute)
+        public static string? GetAttributeValue(this ReadOnlySpan<char> str, ReadOnlySpan<char> attribute)
         {
             if (str.Length == 0)
             {
@@ -28,17 +28,31 @@ namespace Emby.Server.Implementations.Library
                 throw new ArgumentException("String can't be empty.", nameof(attribute));
             }
 
-            string srch = "[" + attribute + "=";
-            int start = str.IndexOf(srch, StringComparison.OrdinalIgnoreCase);
-            if (start != -1)
+            var attributeIndex = str.IndexOf(attribute, StringComparison.OrdinalIgnoreCase);
+
+            // Must be at least 3 characters after the attribute =, ], any character.
+            var maxIndex = str.Length - attribute.Length - 3;
+            while (attributeIndex > -1 && attributeIndex < maxIndex)
             {
-                start += srch.Length;
-                int end = str.IndexOf(']', start);
-                return str.Substring(start, end - start);
+                var attributeEnd = attributeIndex + attribute.Length;
+                if (attributeIndex > 0
+                    && str[attributeIndex - 1] == '['
+                    && (str[attributeEnd] == '=' || str[attributeEnd] == '-'))
+                {
+                    var closingIndex = str[attributeEnd..].IndexOf(']');
+                    // Must be at least 1 character before the closing bracket.
+                    if (closingIndex > 1)
+                    {
+                        return str[(attributeEnd + 1)..(attributeEnd + closingIndex)].Trim().ToString();
+                    }
+                }
+
+                str = str[attributeEnd..];
+                attributeIndex = str.IndexOf(attribute, StringComparison.OrdinalIgnoreCase);
             }
 
             // for imdbid we also accept pattern matching
-            if (string.Equals(attribute, "imdbid", StringComparison.OrdinalIgnoreCase))
+            if (attribute.Equals("imdbid", StringComparison.OrdinalIgnoreCase))
             {
                 var match = ProviderIdParsers.TryFindImdbId(str, out var imdbId);
                 return match ? imdbId.ToString() : null;

Emby.Server.Implementations/Library/Resolvers/Audio/MusicAlbumResolver.cs

@@ -112,7 +112,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Audio
         /// Determine if the supplied list contains what we should consider music.
         /// </summary>
         private bool ContainsMusic(
-            IEnumerable<FileSystemMetadata> list,
+            ICollection<FileSystemMetadata> list,
             bool allowSubfolders,
             IDirectoryService directoryService)
         {

Emby.Server.Implementations/Library/Resolvers/Audio/MusicArtistResolver.cs

@@ -4,12 +4,10 @@ using System;
 using System.Linq;
 using System.Threading.Tasks;
 using Emby.Naming.Common;
-using MediaBrowser.Controller.Configuration;
 using MediaBrowser.Controller.Entities.Audio;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.Resolvers;
 using MediaBrowser.Model.Entities;
-using MediaBrowser.Model.IO;
 using Microsoft.Extensions.Logging;
 
 namespace Emby.Server.Implementations.Library.Resolvers.Audio

Emby.Server.Implementations/Library/Resolvers/BaseVideoResolver.cs

@@ -12,6 +12,7 @@ using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.Providers;
 using MediaBrowser.Model.Entities;
+using Microsoft.Extensions.Logging;
 
 namespace Emby.Server.Implementations.Library.Resolvers
 {
@@ -22,8 +23,11 @@ namespace Emby.Server.Implementations.Library.Resolvers
     public abstract class BaseVideoResolver<T> : MediaBrowser.Controller.Resolvers.ItemResolver<T>
         where T : Video, new()
     {
-        protected BaseVideoResolver(NamingOptions namingOptions)
+        private readonly ILogger _logger;
+
+        protected BaseVideoResolver(ILogger logger, NamingOptions namingOptions)
         {
+            _logger = logger;
             NamingOptions = namingOptions;
         }
 
@@ -49,120 +53,71 @@ namespace Emby.Server.Implementations.Library.Resolvers
         protected virtual TVideoType ResolveVideo<TVideoType>(ItemResolveArgs args, bool parseName)
               where TVideoType : Video, new()
         {
-            var namingOptions = NamingOptions;
+            VideoFileInfo videoInfo = null;
+            VideoType? videoType = null;
 
             // If the path is a file check for a matching extensions
             if (args.IsDirectory)
             {
-                TVideoType video = null;
-                VideoFileInfo videoInfo = null;
-
                 // Loop through each child file/folder and see if we find a video
                 foreach (var child in args.FileSystemChildren)
                 {
                     var filename = child.Name;
-
                     if (child.IsDirectory)
                     {
                         if (IsDvdDirectory(child.FullName, filename, args.DirectoryService))
                         {
-                            videoInfo = VideoResolver.ResolveDirectory(args.Path, namingOptions);
-
-                            if (videoInfo == null)
-                            {
-                                return null;
-                            }
-
-                            video = new TVideoType
-                            {
-                                Path = args.Path,
-                                VideoType = VideoType.Dvd,
-                                ProductionYear = videoInfo.Year
-                            };
-                            break;
+                            videoType = VideoType.Dvd;
                         }
-
-                        if (IsBluRayDirectory(filename))
+                        else if (IsBluRayDirectory(filename))
                         {
-                            videoInfo = VideoResolver.ResolveDirectory(args.Path, namingOptions);
-
-                            if (videoInfo == null)
-                            {
-                                return null;
-                            }
-
-                            video = new TVideoType
-                            {
-                                Path = args.Path,
-                                VideoType = VideoType.BluRay,
-                                ProductionYear = videoInfo.Year
-                            };
-                            break;
+                            videoType = VideoType.BluRay;
                         }
                     }
                     else if (IsDvdFile(filename))
                     {
-                        videoInfo = VideoResolver.ResolveDirectory(args.Path, namingOptions);
-
-                        if (videoInfo == null)
-                        {
-                            return null;
-                        }
-
-                        video = new TVideoType
-                        {
-                            Path = args.Path,
-                            VideoType = VideoType.Dvd,
-                            ProductionYear = videoInfo.Year
-                        };
-                        break;
+                        videoType = VideoType.Dvd;
                     }
+
+                    if (videoType == null)
+                    {
+                        continue;
+                    }
+
+                    videoInfo = VideoResolver.ResolveDirectory(args.Path, NamingOptions, parseName);
+                    break;
                 }
-
-                if (video != null)
-                {
-                    video.Name = parseName ?
-                        videoInfo.Name :
-                        Path.GetFileName(args.Path);
-
-                    Set3DFormat(video, videoInfo);
-                }
-
-                return video;
             }
             else
             {
-                var videoInfo = VideoResolver.Resolve(args.Path, false, namingOptions, false);
-
-                if (videoInfo == null)
-                {
-                    return null;
-                }
-
-                if (VideoResolver.IsVideoFile(args.Path, NamingOptions) || videoInfo.IsStub)
-                {
-                    var path = args.Path;
-
-                    var video = new TVideoType
-                    {
-                        Path = path,
-                        IsInMixedFolder = true,
-                        ProductionYear = videoInfo.Year
-                    };
-
-                    SetVideoType(video, videoInfo);
-
-                    video.Name = parseName ?
-                        videoInfo.Name :
-                        Path.GetFileNameWithoutExtension(args.Path);
-
-                    Set3DFormat(video, videoInfo);
-
-                    return video;
-                }
+                videoInfo = VideoResolver.Resolve(args.Path, false, NamingOptions, parseName);
             }
 
-            return null;
+            if (videoInfo == null || (!videoInfo.IsStub && !VideoResolver.IsVideoFile(args.Path, NamingOptions)))
+            {
+                return null;
+            }
+
+            var video = new TVideoType
+            {
+                Name = videoInfo.Name,
+                Path = args.Path,
+                ProductionYear = videoInfo.Year,
+                ExtraType = videoInfo.ExtraType
+            };
+
+            if (videoType.HasValue)
+            {
+                video.VideoType = videoType.Value;
+            }
+            else
+            {
+                SetVideoType(video, videoInfo);
+            }
+
+            Set3DFormat(video, videoInfo);
+
+            return video;
         }
 
         protected void SetVideoType(Video video, VideoFileInfo videoInfo)
@@ -205,19 +160,26 @@ namespace Emby.Server.Implementations.Library.Resolvers
                 }
                 else
                 {
-                    // use disc-utils, both DVDs and BDs use UDF filesystem
-                    using (var videoFileStream = File.Open(video.Path, FileMode.Open, FileAccess.Read))
+                    try
                     {
-                        UdfReader udfReader = new UdfReader(videoFileStream);
-                        if (udfReader.DirectoryExists("VIDEO_TS"))
+                        // use disc-utils, both DVDs and BDs use UDF filesystem
+                        using (var videoFileStream = File.Open(video.Path, FileMode.Open, FileAccess.Read))
+                        using (UdfReader udfReader = new UdfReader(videoFileStream))
                         {
-                            video.IsoType = IsoType.Dvd;
-                        }
-                        else if (udfReader.DirectoryExists("BDMV"))
-                        {
-                            video.IsoType = IsoType.BluRay;
+                            if (udfReader.DirectoryExists("VIDEO_TS"))
+                            {
+                                video.IsoType = IsoType.Dvd;
+                            }
+                            else if (udfReader.DirectoryExists("BDMV"))
+                            {
+                                video.IsoType = IsoType.BluRay;
+                            }
                         }
                     }
+                    catch (Exception ex)
+                    {
+                        _logger.LogError(ex, "Error opening UDF/ISO image: {Value}", video.Path ?? video.Name);
+                    }
                 }
             }
         }

Emby.Server.Implementations/Library/Resolvers/Books/BookResolver.cs

@@ -5,6 +5,7 @@
 using System;
 using System.IO;
 using System.Linq;
+using Jellyfin.Extensions;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Model.Entities;
@@ -32,7 +33,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Books
 
             var extension = Path.GetExtension(args.Path);
 
-            if (extension != null && _validExtensions.Contains(extension, StringComparer.OrdinalIgnoreCase))
+            if (extension != null && _validExtensions.Contains(extension, StringComparison.OrdinalIgnoreCase))
             {
                 // It's a book
                 return new Book