From 503253e568e19f99ea814dd057f27da622dfe378 Mon Sep 17 00:00:00 2001
From: Dmitry Pentin <riotbr3aker@gmail.com>
Date: Sun, 22 May 2022 17:10:25 +0300
Subject: [PATCH] Fixed scalar YccK conversion

---
 .../ColorConverters/JpegColorConverter.YccKScalar.cs        | 6 +++---
 .../ColorConverters/JpegColorConverter.YccKVector.cs        | 4 ++--
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/ImageSharp/Formats/Jpeg/Components/ColorConverters/JpegColorConverter.YccKScalar.cs b/src/ImageSharp/Formats/Jpeg/Components/ColorConverters/JpegColorConverter.YccKScalar.cs
index 3b40dff8af..1c03c4eef3 100644
--- a/src/ImageSharp/Formats/Jpeg/Components/ColorConverters/JpegColorConverter.YccKScalar.cs
+++ b/src/ImageSharp/Formats/Jpeg/Components/ColorConverters/JpegColorConverter.YccKScalar.cs
@@ -47,9 +47,9 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components
                     // r = y + (1.402F * cr);
                     // g = y - (0.344136F * cb) - (0.714136F * cr);
                     // b = y + (1.772F * cb);
-                    c0[i] = MathF.Round(y + (RCrMult * cr), MidpointRounding.AwayFromZero) * scaledK;
-                    c1[i] = MathF.Round(y - (GCbMult * cb) - (GCrMult * cr), MidpointRounding.AwayFromZero) * scaledK;
-                    c2[i] = MathF.Round(y + (BCbMult * cb), MidpointRounding.AwayFromZero) * scaledK;
+                    c0[i] = (maxValue - MathF.Round(y + (RCrMult * cr), MidpointRounding.AwayFromZero)) * scaledK;
+                    c1[i] = (maxValue - MathF.Round(y - (GCbMult * cb) - (GCrMult * cr), MidpointRounding.AwayFromZero)) * scaledK;
+                    c2[i] = (maxValue - MathF.Round(y + (BCbMult * cb), MidpointRounding.AwayFromZero)) * scaledK;
                 }
             }
 
diff --git a/src/ImageSharp/Formats/Jpeg/Components/ColorConverters/JpegColorConverter.YccKVector.cs b/src/ImageSharp/Formats/Jpeg/Components/ColorConverters/JpegColorConverter.YccKVector.cs
index 1f5944bd8c..c84416fc40 100644
--- a/src/ImageSharp/Formats/Jpeg/Components/ColorConverters/JpegColorConverter.YccKVector.cs
+++ b/src/ImageSharp/Formats/Jpeg/Components/ColorConverters/JpegColorConverter.YccKVector.cs
@@ -71,8 +71,8 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components
             }
 
             /// <inheritdoc/>
-            protected override void ConvertToRgbInplaceScalarRemainder(in ComponentValues values) =>
-                YccKScalar.ConvertToRgpInplace(values, this.MaximumValue, this.HalfValue);
+            protected override void ConvertToRgbInplaceScalarRemainder(in ComponentValues values)
+                => YccKScalar.ConvertToRgpInplace(values, this.MaximumValue, this.HalfValue);
 
             /// <inheritdoc/>
             protected override void ConvertFromRgbVectorized(in ComponentValues values, Span<float> rLane, Span<float> gLane, Span<float> bLane)