Another allocation optimization

4 years ago · d879dd82f0
1 changed files with 3 additions and 2 deletions
--- a/src/ImageSharp/Formats/Png/PngEncoderCore.cs
+++ b/src/ImageSharp/Formats/Png/PngEncoderCore.cs
@ -680,10 +680,11 @@ namespace SixLabors.ImageSharp.Formats.Png
                return;
            }

-            byte[] payload = new byte[xmpData.Length + PngConstants.XmpKeyword.Length + 5];
+            using IMemoryOwner<byte> owner = this.memoryAllocator.Allocate<byte>(xmpData.Length + PngConstants.XmpKeyword.Length + 5);
+            Span<byte> payload = owner.GetSpan();
            PngConstants.XmpKeyword.CopyTo(payload);
            int bytesWritten = PngConstants.XmpKeyword.Length + iTxtHeaderSize;
-            xmpData.CopyTo(payload.AsSpan(bytesWritten));
+            xmpData.CopyTo(payload.Slice(bytesWritten));
            this.WriteChunk(stream, PngChunkType.InternationalText, payload);
        }