Added FixByteOrder to the DcmReadDefines (#1976)

Author: dlemstra

src/Magick.NET/Formats/Dcm/DcmReadDefines.cs

@@ -10,6 +10,11 @@ namespace ImageMagick.Formats;
 /// </summary>
 public sealed class DcmReadDefines : IReadDefines
 {
+    /// <summary>
+    /// Gets or sets a value indicating whether the byte order of the pixels should be fixed (dcm:fix-byte-order).
+    /// </summary>
+    public bool? FixByteOrder { get; set; }
+
     /// <summary>
     /// Gets the format where the defines are for.
     /// </summary>
@@ -44,6 +49,9 @@ public IEnumerable<IDefine> Defines
     {
         get
         {
+            if (FixByteOrder.HasValue)
+                yield return new MagickDefine(Format, "fix-byte-order", FixByteOrder.Value);
+
             if (Rescale.HasValue)
                 yield return new MagickDefine(Format, "rescale", Rescale.Value);
 

tests/Magick.NET.Tests/Formats/Dcm/DcmReadDefinesTests/TheConstructor.cs

@@ -17,6 +17,7 @@ public void ShouldNotSetAnyDefines()
             using var image = new MagickImage();
             image.Settings.SetDefines(new DcmReadDefines());
 
+            Assert.Null(image.Settings.GetDefine(MagickFormat.Dcm, "fix-byte-order"));
             Assert.Null(image.Settings.GetDefine(MagickFormat.Dcm, "display-range"));
             Assert.Null(image.Settings.GetDefine(MagickFormat.Dcm, "rescale"));
             Assert.Null(image.Settings.GetDefine(MagickFormat.Dcm, "window"));

tests/Magick.NET.Tests/Formats/Dcm/DcmReadDefinesTests/TheFixByteOrderProperty.cs

@@ -0,0 +1,42 @@
+// Copyright Dirk Lemstra https://github.com/dlemstra/Magick.NET.
+// Licensed under the Apache License, Version 2.0.
+
+using ImageMagick;
+using ImageMagick.Formats;
+using Xunit;
+
+namespace Magick.NET.Tests;
+
+public partial class DcmReadDefinesTests
+{
+    public class TheFixByteOrderProperty
+    {
+        [Fact]
+        public void ShoulBeSetWhenTheValueIsFalse()
+        {
+            var defines = new DcmReadDefines()
+            {
+                FixByteOrder = false,
+            };
+
+            using var image = new MagickImage();
+            image.Settings.SetDefines(defines);
+
+            Assert.Equal("false", image.Settings.GetDefine(MagickFormat.Dcm, "fix-byte-order"));
+        }
+
+        [Fact]
+        public void ShouldBeSetWhenTheValueIsTrue()
+        {
+            var defines = new DcmReadDefines()
+            {
+                FixByteOrder = true,
+            };
+
+            using var image = new MagickImage();
+            image.Settings.SetDefines(defines);
+
+            Assert.Equal("true", image.Settings.GetDefine(MagickFormat.Dcm, "fix-byte-order"));
+        }
+    }
+}