From 6baa1094463cf93bd8537dd304564886b8c7f97e Mon Sep 17 00:00:00 2001
From: Sergio Pedri <sergio0694@live.com>
Date: Thu, 27 Feb 2020 12:46:58 +0100
Subject: [PATCH] Added single row value delegate interfaces

---
 src/ImageSharp/Advanced/IRowAction.cs         | 17 ++++++++++++++
 .../Advanced/IRowAction{TBuffer}.cs           | 22 +++++++++++++++++++
 2 files changed, 39 insertions(+)
 create mode 100644 src/ImageSharp/Advanced/IRowAction.cs
 create mode 100644 src/ImageSharp/Advanced/IRowAction{TBuffer}.cs

diff --git a/src/ImageSharp/Advanced/IRowAction.cs b/src/ImageSharp/Advanced/IRowAction.cs
new file mode 100644
index 0000000000..b541160af9
--- /dev/null
+++ b/src/ImageSharp/Advanced/IRowAction.cs
@@ -0,0 +1,17 @@
+// Copyright (c) Six Labors and contributors.
+// Licensed under the Apache License, Version 2.0.
+
+namespace SixLabors.ImageSharp.Advanced
+{
+    /// <summary>
+    /// Defines the contract for an action that operates on a row.
+    /// </summary>
+    public interface IRowAction
+    {
+        /// <summary>
+        /// Invokes the method passing the row y coordinate.
+        /// </summary>
+        /// <param name="y">The row y coordinate.</param>
+        void Invoke(int y);
+    }
+}
diff --git a/src/ImageSharp/Advanced/IRowAction{TBuffer}.cs b/src/ImageSharp/Advanced/IRowAction{TBuffer}.cs
new file mode 100644
index 0000000000..aff043aa2a
--- /dev/null
+++ b/src/ImageSharp/Advanced/IRowAction{TBuffer}.cs
@@ -0,0 +1,22 @@
+// Copyright (c) Six Labors and contributors.
+// Licensed under the Apache License, Version 2.0.
+
+using System;
+
+namespace SixLabors.ImageSharp.Advanced
+{
+    /// <summary>
+    /// Defines the contract for an action that operates on a row with a temporary buffer.
+    /// </summary>
+    /// <typeparam name="TBuffer">The type of buffer elements.</typeparam>
+    public interface IRowAction<TBuffer>
+        where TBuffer : unmanaged
+    {
+        /// <summary>
+        /// Invokes the method passing the row and a buffer.
+        /// </summary>
+        /// <param name="y">The row y coordinate.</param>
+        /// <param name="span">The contiguous region of memory.</param>
+        void Invoke(int y, Span<TBuffer> span);
+    }
+}