Merge pull request #2771 from Bond-009/nullable4

Enable nullabe reference types for Emby.Drawing and Jellyfin.Drawing.Skia

Emby.Dlna/ConfigurationExtension.cs

@@ -1,3 +1,4 @@
+#nullable enable
 #pragma warning disable CS1591
 
 using System.Collections.Generic;

Emby.Drawing/Emby.Drawing.csproj

@@ -10,6 +10,7 @@
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
+    <Nullable>enable</Nullable>
   </PropertyGroup>
 
   <ItemGroup>

Emby.Drawing/ImageProcessor.cs

@@ -116,11 +116,6 @@ namespace Emby.Drawing
         /// <inheritdoc />
         public async Task<(string path, string mimeType, DateTime dateModified)> ProcessImage(ImageProcessingOptions options)
         {
-            if (options == null)
-            {
-                throw new ArgumentNullException(nameof(options));
-            }
-
             ItemImageInfo originalImage = options.Image;
             BaseItem item = options.Item;
 
@@ -324,8 +319,6 @@ namespace Emby.Drawing
 
         /// <inheritdoc />
         public string GetImageCacheTag(BaseItem item, ChapterInfo chapter)
-        {
-            try
         {
             return GetImageCacheTag(item, new ItemImageInfo
             {
@@ -334,11 +327,6 @@ namespace Emby.Drawing
                 DateModified = chapter.ImageDateModified
             });
         }
-            catch
-            {
-                return null;
-            }
-        }
 
         private async Task<(string path, DateTime dateModified)> GetSupportedImage(string originalImagePath, DateTime dateModified)
         {

Emby.Server.Implementations/Data/SqliteItemRepository.cs

@@ -1989,9 +1989,16 @@ namespace Emby.Server.Implementations.Data
                 chapter.ImagePath = reader.GetString(2);
 
                 if (!string.IsNullOrEmpty(chapter.ImagePath))
+                {
+                    try
                     {
                         chapter.ImageTag = _imageProcessor.GetImageCacheTag(item, chapter);
                     }
+                    catch (Exception ex)
+                    {
+                        Logger.LogError(ex, "Failed to create image cache tag.");
+                    }
+                }
             }
 
             if (!reader.IsDBNull(3))

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

@@ -10,6 +10,7 @@
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
+    <Nullable>enable</Nullable>
   </PropertyGroup>
 
   <ItemGroup>

Jellyfin.Drawing.Skia/PlayedIndicatorDrawer.cs

@@ -26,7 +26,7 @@ namespace Jellyfin.Drawing.Skia
             {
                 paint.Color = SKColor.Parse("#CC00A4DC");
                 paint.Style = SKPaintStyle.Fill;
-                canvas.DrawCircle((float)x, OffsetFromTopRightCorner, 20, paint);
+                canvas.DrawCircle(x, OffsetFromTopRightCorner, 20, paint);
             }
 
             using (var paint = new SKPaint())
@@ -39,16 +39,13 @@ namespace Jellyfin.Drawing.Skia
 
                 // or:
                 // var emojiChar = 0x1F680;
-                var text = "✔️";
+                const string Text = "✔️";
-                var emojiChar = StringUtilities.GetUnicodeCharacterCode(text, SKTextEncoding.Utf32);
+                var emojiChar = StringUtilities.GetUnicodeCharacterCode(Text, SKTextEncoding.Utf32);
 
                 // ask the font manager for a font with that character
-                var fontManager = SKFontManager.Default;
+                paint.Typeface = SKFontManager.Default.MatchCharacter(emojiChar);
-                var emojiTypeface = fontManager.MatchCharacter(emojiChar);
 
-                paint.Typeface = emojiTypeface;
+                canvas.DrawText(Text, (float)x - 20, OffsetFromTopRightCorner + 12, paint);
-
-                canvas.DrawText(text, (float)x - 20, OffsetFromTopRightCorner + 12, paint);
             }
         }
     }

Jellyfin.Drawing.Skia/SkiaEncoder.cs

@@ -214,11 +214,6 @@ namespace Jellyfin.Drawing.Skia
         /// <exception cref="SkiaCodecException">The file at the specified path could not be used to generate a codec.</exception>
         public ImageDimensions GetImageSize(string path)
         {
-            if (path == null)
-            {
-                throw new ArgumentNullException(nameof(path));
-            }
-
             if (!File.Exists(path))
             {
                 throw new FileNotFoundException("File not found", path);
@@ -306,7 +301,7 @@ namespace Jellyfin.Drawing.Skia
         /// <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)
+        internal SKBitmap? Decode(string path, bool forceCleanBitmap, ImageOrientation? orientation, out SKEncodedOrigin origin)
         {
             if (!File.Exists(path))
             {
@@ -357,12 +352,17 @@ namespace Jellyfin.Drawing.Skia
             return resultBitmap;
         }
 
-        private SKBitmap GetBitmap(string path, bool cropWhitespace, bool forceAnalyzeBitmap, ImageOrientation? orientation, out SKEncodedOrigin origin)
+        private SKBitmap? GetBitmap(string path, bool cropWhitespace, bool forceAnalyzeBitmap, ImageOrientation? orientation, out SKEncodedOrigin origin)
         {
             if (cropWhitespace)
             {
                 using (var bitmap = Decode(path, forceAnalyzeBitmap, orientation, out origin))
                 {
+                    if (bitmap == null)
+                    {
+                        return null;
+                    }
+
                     return CropWhiteSpace(bitmap);
                 }
             }
@@ -370,13 +370,11 @@ namespace Jellyfin.Drawing.Skia
             return Decode(path, forceAnalyzeBitmap, orientation, out origin);
         }
 
-        private SKBitmap GetBitmap(string path, bool cropWhitespace, bool autoOrient, ImageOrientation? orientation)
+        private SKBitmap? GetBitmap(string path, bool cropWhitespace, bool autoOrient, ImageOrientation? orientation)
         {
-            SKEncodedOrigin origin;
-
             if (autoOrient)
             {
-                var bitmap = GetBitmap(path, cropWhitespace, true, orientation, out origin);
+                var bitmap = GetBitmap(path, cropWhitespace, true, orientation, out var origin);
 
                 if (bitmap != null && origin != SKEncodedOrigin.TopLeft)
                 {
@@ -389,7 +387,7 @@ namespace Jellyfin.Drawing.Skia
                 return bitmap;
             }
 
-            return GetBitmap(path, cropWhitespace, false, orientation, out origin);
+            return GetBitmap(path, cropWhitespace, false, orientation, out _);
         }
 
         private SKBitmap OrientImage(SKBitmap bitmap, SKEncodedOrigin origin)
@@ -526,14 +524,14 @@ namespace Jellyfin.Drawing.Skia
         /// <inheritdoc/>
         public string EncodeImage(string inputPath, DateTime dateModified, string outputPath, bool autoOrient, ImageOrientation? orientation, int quality, ImageProcessingOptions options, ImageFormat selectedOutputFormat)
         {
-            if (string.IsNullOrWhiteSpace(inputPath))
+            if (inputPath.Length == 0)
             {
-                throw new ArgumentNullException(nameof(inputPath));
+                throw new ArgumentException("String can't be empty.", nameof(inputPath));
             }
 
-            if (string.IsNullOrWhiteSpace(inputPath))
+            if (outputPath.Length == 0)
             {
-                throw new ArgumentNullException(nameof(outputPath));
+                throw new ArgumentException("String can't be empty.", nameof(outputPath));
             }
 
             var skiaOutputFormat = GetImageFormat(selectedOutputFormat);
@@ -547,7 +545,7 @@ namespace Jellyfin.Drawing.Skia
             {
                 if (bitmap == null)
                 {
-                    throw new ArgumentOutOfRangeException($"Skia unable to read image {inputPath}");
+                    throw new InvalidDataException($"Skia unable to read image {inputPath}");
                 }
 
                 var originalImageSize = new ImageDimensions(bitmap.Width, bitmap.Height);

Jellyfin.Drawing.Skia/StripCollageBuilder.cs

@@ -120,13 +120,13 @@ namespace Jellyfin.Drawing.Skia
                         }
 
                         // resize to the same aspect as the original
-                        int iWidth = (int)Math.Abs(iHeight * currentBitmap.Width / currentBitmap.Height);
+                        int iWidth = Math.Abs(iHeight * currentBitmap.Width / currentBitmap.Height);
                         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);
+                            int ix = Math.Abs((iWidth - iSlice) / 2);
                             using (var image = SKImage.FromBitmap(resizeBitmap))
                             using (var subset = image.Subset(SKRectI.Create(ix, 0, iSlice, iHeight)))
                             {
@@ -141,10 +141,10 @@ namespace Jellyfin.Drawing.Skia
             return bitmap;
         }
 
-        private SKBitmap GetNextValidImage(string[] paths, int currentIndex, out int newIndex)
+        private SKBitmap? GetNextValidImage(string[] paths, int currentIndex, out int newIndex)
         {
             var imagesTested = new Dictionary<int, int>();
-            SKBitmap bitmap = null;
+            SKBitmap? bitmap = null;
 
             while (imagesTested.Count < paths.Length)
             {
@@ -153,7 +153,7 @@ namespace Jellyfin.Drawing.Skia
                     currentIndex = 0;
                 }
 
-                bitmap = _skiaEncoder.Decode(paths[currentIndex], false, null, out var origin);
+                bitmap = _skiaEncoder.Decode(paths[currentIndex], false, null, out _);
 
                 imagesTested[currentIndex] = 0;
 

Jellyfin.Drawing.Skia/UnplayedCountIndicator.cs

@@ -32,7 +32,7 @@ namespace Jellyfin.Drawing.Skia
             {
                 paint.Color = SKColor.Parse("#CC00A4DC");
                 paint.Style = SKPaintStyle.Fill;
-                canvas.DrawCircle((float)x, OffsetFromTopRightCorner, 20, paint);
+                canvas.DrawCircle(x, OffsetFromTopRightCorner, 20, paint);
             }
 
             using (var paint = new SKPaint())
@@ -61,7 +61,7 @@ namespace Jellyfin.Drawing.Skia
                     paint.TextSize = 18;
                 }
 
-                canvas.DrawText(text, (float)x, y, paint);
+                canvas.DrawText(text, x, y, paint);
             }
         }
     }

MediaBrowser.Common/Extensions/ShuffleExtensions.cs

@@ -1,3 +1,5 @@
+#nullable enable
+
 using System;
 using System.Collections.Generic;