From c3fdf990411af978c7954048239b07c85775c6ee Mon Sep 17 00:00:00 2001
From: Dmitry Pentin <riotbr3aker@gmail.com>
Date: Sat, 19 Jun 2021 03:04:31 +0300
Subject: [PATCH] Removed redundant if check for rle emitter

---
 .../Components/Encoder/HuffmanScanEncoder.cs  | 27 +++++++++++++++----
 1 file changed, 22 insertions(+), 5 deletions(-)

diff --git a/src/ImageSharp/Formats/Jpeg/Components/Encoder/HuffmanScanEncoder.cs b/src/ImageSharp/Formats/Jpeg/Components/Encoder/HuffmanScanEncoder.cs
index 3f490d2958..79ed59f6a0 100644
--- a/src/ImageSharp/Formats/Jpeg/Components/Encoder/HuffmanScanEncoder.cs
+++ b/src/ImageSharp/Formats/Jpeg/Components/Encoder/HuffmanScanEncoder.cs
@@ -256,7 +256,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Encoder
             int dc = (int)refTemp2[0];
 
             // Emit the DC delta.
-            this.EmitHuffRLE(this.huffmanTables[2 * (int)index].Values, 0, dc - prevDC);
+            this.EmitDirectCurrentTerm(this.huffmanTables[2 * (int)index].Values, dc - prevDC);
 
             // Emit the AC components.
             int[] huffmanTable = this.huffmanTables[(2 * (int)index) + 1].Values;
@@ -358,6 +358,26 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Encoder
             this.Emit(x >> 8, x & 0xff);
         }
 
+        [MethodImpl(InliningOptions.ShortMethod)]
+        private void EmitDirectCurrentTerm(int[] table, int value)
+        {
+            int a = value;
+            int b = value;
+            if (a < 0)
+            {
+                a = -value;
+                b = value - 1;
+            }
+
+            int bt = GetHuffmanEncodingLength((uint)a);
+
+            this.EmitHuff(table, bt);
+            if (bt > 0)
+            {
+                this.Emit(b & ((1 << bt) - 1), bt);
+            }
+        }
+
         /// <summary>
         /// Emits a run of runLength copies of value encoded with the given Huffman encoder.
         /// </summary>
@@ -378,10 +398,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Encoder
             int bt = GetHuffmanEncodingLength((uint)a);
 
             this.EmitHuff(table, (runLength << 4) | bt);
-            if (bt > 0)
-            {
-                this.Emit(b & ((1 << bt) - 1), bt);
-            }
+            this.Emit(b & ((1 << bt) - 1), bt);
         }
 
         /// <summary>