Add Image extensions to save TIFF format files

src/ImageSharp/Formats/Tiff/ImageExtensions.cs

@@ -0,0 +1,53 @@
+// <copyright file="ImageExtensions.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp
+{
+    using System.IO;
+
+    using Formats;
+
+    /// <summary>
+    /// Extension methods for the <see cref="Image{TColor}"/> type.
+    /// </summary>
+    public static partial class ImageExtensions
+    {
+        /// <summary>
+        /// Saves the image to the given stream with the tiff format.
+        /// </summary>
+        /// <typeparam name="TColor">The pixel format.</typeparam>
+        /// <param name="source">The image this method extends.</param>
+        /// <param name="stream">The stream to save the image to.</param>
+        /// <exception cref="System.ArgumentNullException">Thrown if the stream is null.</exception>
+        /// <returns>
+        /// The <see cref="Image{TColor}"/>.
+        /// </returns>
+        public static Image<TColor> SaveAsTiff<TColor>(this Image<TColor> source, Stream stream)
+            where TColor : struct, IPixel<TColor>
+        {
+            return SaveAsTiff(source, stream, null);
+        }
+
+        /// <summary>
+        /// Saves the image to the given stream with the tiff format.
+        /// </summary>
+        /// <typeparam name="TColor">The pixel format.</typeparam>
+        /// <param name="source">The image this method extends.</param>
+        /// <param name="stream">The stream to save the image to.</param>
+        /// <param name="options">The options for the encoder.</param>
+        /// <exception cref="System.ArgumentNullException">Thrown if the stream is null.</exception>
+        /// <returns>
+        /// The <see cref="Image{TColor}"/>.
+        /// </returns>
+        public static Image<TColor> SaveAsTiff<TColor>(this Image<TColor> source, Stream stream, ITiffEncoderOptions options)
+            where TColor : struct, IPixel<TColor>
+        {
+            TiffEncoder encoder = new TiffEncoder();
+            encoder.Encode(source, stream, options);
+
+            return source;
+        }
+    }
+}