From 7df7d0dbec9cbfb598d9814a107b865789d1e27c Mon Sep 17 00:00:00 2001
From: Ildar Khayrutdinov <ildarkhairutdin@gmail.com>
Date: Sat, 18 Dec 2021 17:05:43 +0300
Subject: [PATCH] add TiffFormatType enum

---
 .../Tiff/TiffDecoderMetadataCreator.cs        |  2 +-
 src/ImageSharp/Formats/Tiff/TiffFormatType.cs | 21 +++++++++++++++++++
 src/ImageSharp/Formats/Tiff/TiffMetadata.cs   |  7 ++-----
 .../Formats/Tiff/BigTiffDecoderTests.cs       |  5 +++--
 4 files changed, 27 insertions(+), 8 deletions(-)
 create mode 100644 src/ImageSharp/Formats/Tiff/TiffFormatType.cs

diff --git a/src/ImageSharp/Formats/Tiff/TiffDecoderMetadataCreator.cs b/src/ImageSharp/Formats/Tiff/TiffDecoderMetadataCreator.cs
index ddaf6fa96c..4c4023acee 100644
--- a/src/ImageSharp/Formats/Tiff/TiffDecoderMetadataCreator.cs
+++ b/src/ImageSharp/Formats/Tiff/TiffDecoderMetadataCreator.cs
@@ -57,7 +57,7 @@ namespace SixLabors.ImageSharp.Formats.Tiff
 
             TiffMetadata tiffMetadata = imageMetaData.GetTiffMetadata();
             tiffMetadata.ByteOrder = byteOrder;
-            tiffMetadata.IsBigTiff = isBigTiff;
+            tiffMetadata.FormatType = isBigTiff ? TiffFormatType.BigTIFF : TiffFormatType.Default;
 
             return imageMetaData;
         }
diff --git a/src/ImageSharp/Formats/Tiff/TiffFormatType.cs b/src/ImageSharp/Formats/Tiff/TiffFormatType.cs
new file mode 100644
index 0000000000..320386e4c8
--- /dev/null
+++ b/src/ImageSharp/Formats/Tiff/TiffFormatType.cs
@@ -0,0 +1,21 @@
+// Copyright (c) Six Labors.
+// Licensed under the Apache License, Version 2.0.
+
+namespace SixLabors.ImageSharp.Formats.Tiff
+{
+    /// <summary>
+    /// The TIFF format type enum.
+    /// </summary>
+    public enum TiffFormatType
+    {
+        /// <summary>
+        /// The TIFF file format type.
+        /// </summary>
+        Default,
+
+        /// <summary>
+        /// The BigTIFF format type.
+        /// </summary>
+        BigTIFF
+    }
+}
diff --git a/src/ImageSharp/Formats/Tiff/TiffMetadata.cs b/src/ImageSharp/Formats/Tiff/TiffMetadata.cs
index d537981dbe..f5124a78ae 100644
--- a/src/ImageSharp/Formats/Tiff/TiffMetadata.cs
+++ b/src/ImageSharp/Formats/Tiff/TiffMetadata.cs
@@ -27,12 +27,9 @@ namespace SixLabors.ImageSharp.Formats.Tiff
         public ByteOrder ByteOrder { get; set; }
 
         /// <summary>
-        /// Gets or sets a value indicating whether this instance is BigTiff format.
+        /// Gets or sets the format type.
         /// </summary>
-        /// <value>
-        ///   <c>true</c> if this instance BigTiff format; otherwise, <c>false</c>.
-        /// </value>
-        public bool IsBigTiff { get; set; }
+        public TiffFormatType FormatType { get; set; }
 
         /// <inheritdoc/>
         public IDeepCloneable DeepClone() => new TiffMetadata(this);
diff --git a/tests/ImageSharp.Tests/Formats/Tiff/BigTiffDecoderTests.cs b/tests/ImageSharp.Tests/Formats/Tiff/BigTiffDecoderTests.cs
index 24fce1d0d6..7a02c91b8b 100644
--- a/tests/ImageSharp.Tests/Formats/Tiff/BigTiffDecoderTests.cs
+++ b/tests/ImageSharp.Tests/Formats/Tiff/BigTiffDecoderTests.cs
@@ -5,6 +5,7 @@
 using System;
 using System.IO;
 using System.Linq;
+using SixLabors.ImageSharp.Formats.Tiff;
 using SixLabors.ImageSharp.Metadata;
 using SixLabors.ImageSharp.Metadata.Profiles.Exif;
 using SixLabors.ImageSharp.PixelFormats;
@@ -80,9 +81,9 @@ namespace SixLabors.ImageSharp.Tests.Formats.Tiff
                 Assert.Equal(expectedVResolution, info.Metadata.VerticalResolution);
                 Assert.Equal(expectedResolutionUnit, info.Metadata.ResolutionUnits);
 
-                ImageSharp.Formats.Tiff.TiffMetadata tiffmeta = info.Metadata.GetTiffMetadata();
+                TiffMetadata tiffmeta = info.Metadata.GetTiffMetadata();
                 Assert.NotNull(tiffmeta);
-                Assert.True(tiffmeta.IsBigTiff);
+                Assert.Equal(TiffFormatType.BigTIFF, tiffmeta.FormatType);
             }
         }