Avoid HuffmanSpec copies

8 years ago · 86407f5877
1 changed files with 3 additions and 2 deletions
--- a/src/ImageSharp/Formats/Jpeg/JpegEncoderCore.cs
+++ b/src/ImageSharp/Formats/Jpeg/JpegEncoderCore.cs
@ -544,15 +544,16 @@ namespace SixLabors.ImageSharp.Formats.Jpeg
                specs = new[] { HuffmanSpec.TheHuffmanSpecs[0], HuffmanSpec.TheHuffmanSpecs[1] };
            }

-            foreach (HuffmanSpec s in specs)
+            for (int i = 0; i < specs.Length; i++)
            {
+                ref HuffmanSpec s = ref specs[i];
                markerlen += 1 + 16 + s.Values.Length;
            }

            this.WriteMarkerHeader(JpegConstants.Markers.DHT, markerlen);
            for (int i = 0; i < specs.Length; i++)
            {
-                HuffmanSpec spec = specs[i];
+                ref HuffmanSpec spec = ref specs[i];
                int len = 0;

                fixed (byte* huffman = this.huffmanBuffer)