v12: Rename V2 to Umbraco.Cms.Imaging.ImageSharp2 (#14223)

* Rename Umbraco.Cms.Imaging.ImageSharp.V2 to Umbraco.Cms.Imaging.ImageSharp2

* Rename Umbraco.Cms.Imaging.ImageSharp to Umbraco.Cms.Imaging.ImageSharp3

* Rename Umbraco.Cms.Imaging.ImageSharp3 back to Umbraco.Cms.Imaging.ImageSharp

src/Umbraco.Cms.Imaging.ImageSharp2/Media/ImageSharpDimensionExtractor.cs

@@ -0,0 +1,67 @@
+using SixLabors.ImageSharp;
+using SixLabors.ImageSharp.Metadata.Profiles.Exif;
+using Umbraco.Cms.Core.Media;
+using Size = System.Drawing.Size;
+
+namespace Umbraco.Cms.Imaging.ImageSharp.Media;
+
+public sealed class ImageSharpDimensionExtractor : IImageDimensionExtractor
+{
+    private readonly Configuration _configuration;
+
+    /// <inheritdoc />
+    public IEnumerable<string> SupportedImageFileTypes { get; }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="ImageSharpDimensionExtractor" /> class.
+    /// </summary>
+    /// <param name="configuration">The configuration.</param>
+    public ImageSharpDimensionExtractor(Configuration configuration)
+    {
+        _configuration = configuration ?? throw new ArgumentNullException(nameof(configuration));
+
+        SupportedImageFileTypes = configuration.ImageFormats.SelectMany(f => f.FileExtensions).ToArray();
+    }
+
+    /// <inheritdoc />
+    public Size? GetDimensions(Stream? stream)
+    {
+        Size? size = null;
+
+        IImageInfo imageInfo = Image.Identify(_configuration, stream);
+        if (imageInfo != null)
+        {
+            size = IsExifOrientationRotated(imageInfo)
+                ? new Size(imageInfo.Height, imageInfo.Width)
+                : new Size(imageInfo.Width, imageInfo.Height);
+        }
+
+        return size;
+    }
+
+    private static bool IsExifOrientationRotated(IImageInfo imageInfo)
+        => GetExifOrientation(imageInfo) switch
+        {
+            ExifOrientationMode.LeftTop
+                or ExifOrientationMode.RightTop
+                or ExifOrientationMode.RightBottom
+                or ExifOrientationMode.LeftBottom => true,
+            _ => false,
+        };
+
+    private static ushort GetExifOrientation(IImageInfo imageInfo)
+    {
+        IExifValue<ushort>? orientation = imageInfo.Metadata.ExifProfile?.GetValue(ExifTag.Orientation);
+        if (orientation is not null)
+        {
+            if (orientation.DataType == ExifDataType.Short)
+            {
+                return orientation.Value;
+            }
+
+            return Convert.ToUInt16(orientation.Value);
+        }
+
+        return ExifOrientationMode.Unknown;
+    }
+}