From c6bee8bab66c0f04ce6f994bfea907af9d103e8e Mon Sep 17 00:00:00 2001
From: YoshiRulz <OSSYoshiRulz@gmail.com>
Date: Tue, 22 Feb 2022 10:55:27 +1000
Subject: [PATCH] Revert 03cdb4cdf and ee220f455 re: checksums in movie header

---
 src/BizHawk.Client.Common/movie/HeaderKeys.cs |  2 -
 .../movie/bk2/Bk2Movie.HeaderApi.cs           | 44 ++-----------------
 src/BizHawk.Client.EmuHawk/movie/PlayMovie.cs |  2 -
 3 files changed, 4 insertions(+), 44 deletions(-)

diff --git a/src/BizHawk.Client.Common/movie/HeaderKeys.cs b/src/BizHawk.Client.Common/movie/HeaderKeys.cs
index 00969ace08..0e7a7c9357 100644
--- a/src/BizHawk.Client.Common/movie/HeaderKeys.cs
+++ b/src/BizHawk.Client.Common/movie/HeaderKeys.cs
@@ -15,8 +15,6 @@ namespace BizHawk.Client.Common
 		public const string StartsFromSaveram = "StartsFromSaveRam";
 		public const string SavestateBinaryBase64Blob = "SavestateBinaryBase64Blob"; // this string will not contain base64: ; it's implicit (this is to avoid another big string op to dice off the base64: substring)
 		public const string Sha1 = "SHA1";
-		public const string Md5 = "MD5";
-		public const string Crc32 = "CRC32";
 		public const string FirmwareSha1 = "FirmwareSHA1";
 		public const string Pal = "PAL";
 		public const string BoardName = "BoardName";
diff --git a/src/BizHawk.Client.Common/movie/bk2/Bk2Movie.HeaderApi.cs b/src/BizHawk.Client.Common/movie/bk2/Bk2Movie.HeaderApi.cs
index 0d349687d1..07e4245eff 100644
--- a/src/BizHawk.Client.Common/movie/bk2/Bk2Movie.HeaderApi.cs
+++ b/src/BizHawk.Client.Common/movie/bk2/Bk2Movie.HeaderApi.cs
@@ -108,49 +108,13 @@ namespace BizHawk.Client.Common
 
 		public string Hash
 		{
-			get
-			{
-				if (Header[HeaderKeys.Sha1] != string.Empty)
-				{
-					return Header[HeaderKeys.Sha1];
-				}
-				else if (Header[HeaderKeys.Md5] != string.Empty)
-				{
-					return Header[HeaderKeys.Md5];
-				}
-				else
-				{
-					return Header[HeaderKeys.Crc32];
-				}
-			}
+			get => Header[HeaderKeys.Sha1];
 			set
 			{
-				if (value.Length == 40)
+				if (Header[HeaderKeys.Sha1] != value)
 				{
-					if (Header[HeaderKeys.Sha1] != value || Header[HeaderKeys.Md5] != string.Empty || Header[HeaderKeys.Crc32] != string.Empty)
-					{
-						Changes = true;
-						Header[HeaderKeys.Sha1] = value;
-						Header[HeaderKeys.Md5] = Header[HeaderKeys.Crc32] = "";
-					}
-				}
-				else if (value.Length == 32)
-				{
-					if (Header[HeaderKeys.Md5] != value || Header[HeaderKeys.Sha1] != string.Empty || Header[HeaderKeys.Crc32] != string.Empty)
-					{
-						Changes = true;
-						Header[HeaderKeys.Md5] = value;
-						Header[HeaderKeys.Sha1] = Header[HeaderKeys.Crc32] = "";
-					}
-				}
-				else
-				{
-					if (Header[HeaderKeys.Crc32] != value || Header[HeaderKeys.Sha1] != string.Empty || Header[HeaderKeys.Md5] != string.Empty)
-					{
-						Changes = true;
-						Header[HeaderKeys.Crc32] = value;
-						Header[HeaderKeys.Sha1] = Header[HeaderKeys.Md5] = "";
-					}
+					Changes = true;
+					Header[HeaderKeys.Sha1] = value;
 				}
 			}
 		}
diff --git a/src/BizHawk.Client.EmuHawk/movie/PlayMovie.cs b/src/BizHawk.Client.EmuHawk/movie/PlayMovie.cs
index c78bd04eaa..4f0b803f56 100644
--- a/src/BizHawk.Client.EmuHawk/movie/PlayMovie.cs
+++ b/src/BizHawk.Client.EmuHawk/movie/PlayMovie.cs
@@ -392,8 +392,6 @@ namespace BizHawk.Client.EmuHawk
 				switch (k)
 				{
 					case HeaderKeys.Sha1:
-					case HeaderKeys.Md5:
-					case HeaderKeys.Crc32:
 						if (_game.Hash != v)
 						{
 							item.BackColor = Color.Pink;