Enable StyleCop analyzer and fix existing issues

Jellyfin.Drawing.Skia/Jellyfin.Drawing.Skia.csproj

@@ -26,7 +26,7 @@
   <ItemGroup Condition=" '$(Configuration)' == 'Debug' ">
     <PackageReference Include="Microsoft.CodeAnalysis.FxCopAnalyzers" Version="2.9.7" PrivateAssets="All" />
     <PackageReference Include="SerilogAnalyzer" Version="0.15.0" PrivateAssets="All" />
-    <!-- <PackageReference Include="StyleCop.Analyzers" Version="1.1.118" PrivateAssets="All" /> -->
+    <PackageReference Include="StyleCop.Analyzers" Version="1.1.118" PrivateAssets="All" />
     <PackageReference Include="SmartAnalyzers.MultithreadingAnalyzer" Version="1.1.31" PrivateAssets="All" />
   </ItemGroup>
 

Jellyfin.Drawing.Skia/PlayedIndicatorDrawer.cs

@@ -37,10 +37,10 @@ namespace Jellyfin.Drawing.Skia
                 paint.TextSize = 30;
                 paint.IsAntialias = true;
 
-                var text = "✔️";
-                var emojiChar = StringUtilities.GetUnicodeCharacterCode(text, SKTextEncoding.Utf32);
                 // or:
                 // var emojiChar = 0x1F680;
+                var text = "✔️";
+                var emojiChar = StringUtilities.GetUnicodeCharacterCode(text, SKTextEncoding.Utf32);
 
                 // ask the font manager for a font with that character
                 var fontManager = SKFontManager.Default;

Jellyfin.Drawing.Skia/SkiaCodecException.cs

@@ -10,12 +10,6 @@ namespace Jellyfin.Drawing.Skia
     [SuppressMessage("Design", "CA1032:Implement standard exception constructors", Justification = "A custom property, CodecResult, is required when creating this exception type.")]
     public class SkiaCodecException : SkiaException
     {
-        /// <summary>
-        /// Returns the non-successful codec result returned by Skia.
-        /// </summary>
-        /// <value>The non-successful codec result returned by Skia.</value>
-        public SKCodecResult CodecResult { get; }
-
         /// <summary>
         /// Initializes a new instance of the <see cref="SkiaCodecException" /> class.
         /// </summary>
@@ -37,6 +31,11 @@ namespace Jellyfin.Drawing.Skia
             CodecResult = result;
         }
 
+        /// <summary>
+        /// Gets the non-successful codec result returned by Skia.
+        /// </summary>
+        public SKCodecResult CodecResult { get; }
+
         /// <inheritdoc />
         public override string ToString()
             => string.Format(

Jellyfin.Drawing.Skia/SkiaEncoder.cs

@@ -28,6 +28,9 @@ namespace Jellyfin.Drawing.Skia
         /// <summary>
         /// Initializes a new instance of the <see cref="SkiaEncoder"/> class.
         /// </summary>
+        /// <param name="logger">The application logger.</param>
+        /// <param name="appPaths">The application paths.</param>
+        /// <param name="localizationManager">The application localization manager.</param>
         public SkiaEncoder(
             ILogger<SkiaEncoder> logger,
             IApplicationPaths appPaths,
@@ -80,7 +83,7 @@ namespace Jellyfin.Drawing.Skia
             => new HashSet<ImageFormat>() { ImageFormat.Webp, ImageFormat.Jpg, ImageFormat.Png };
 
         /// <summary>
-        /// Test to determine if the native lib is available
+        /// Test to determine if the native lib is available.
         /// </summary>
         public static void TestSkia()
         {
@@ -288,6 +291,14 @@ namespace Jellyfin.Drawing.Skia
             }
         }
 
+        /// <summary>
+        /// Decode an image.
+        /// </summary>
+        /// <param name="path">The filepath of the image to decode.</param>
+        /// <param name="forceCleanBitmap">Whether to force clean the bitmap.</param>
+        /// <param name="orientation">The orientation of the image.</param>
+        /// <param name="origin">The detected origin of the image.</param>
+        /// <returns>The resulting bitmap of the image.</returns>
         internal SKBitmap Decode(string path, bool forceCleanBitmap, ImageOrientation? orientation, out SKEncodedOrigin origin)
         {
             if (!File.Exists(path))
@@ -629,6 +640,7 @@ namespace Jellyfin.Drawing.Skia
                     }
                 }
             }
+
             return outputPath;
         }
 

Jellyfin.Drawing.Skia/StripCollageBuilder.cs

@@ -15,6 +15,7 @@ namespace Jellyfin.Drawing.Skia
         /// <summary>
         /// Initializes a new instance of the <see cref="StripCollageBuilder"/> class.
         /// </summary>
+        /// <param name="skiaEncoder">The encoder to use for building collages.</param>
         public StripCollageBuilder(SkiaEncoder skiaEncoder)
         {
             _skiaEncoder = skiaEncoder;
@@ -123,6 +124,7 @@ namespace Jellyfin.Drawing.Skia
                         using (var resizeBitmap = new SKBitmap(iWidth, iHeight, currentBitmap.ColorType, currentBitmap.AlphaType))
                         {
                             currentBitmap.ScalePixels(resizeBitmap, SKFilterQuality.High);
+
                             // crop image
                             int ix = (int)Math.Abs((iWidth - iSlice) / 2);
                             using (var image = SKImage.FromBitmap(resizeBitmap))