From aa4b2f415d5df18ace1265e7e76c308dfe411cb2 Mon Sep 17 00:00:00 2001
From: Matt Nadareski <mnadareski@outlook.com>
Date: Tue, 15 Aug 2023 12:07:29 -0400
Subject: [PATCH] Non-zero data start only for audio discs (fixes #536)

---
 CHANGELIST.md                      |  1 +
 MPF.Modules/Redumper/Parameters.cs | 11 +++++++----
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/CHANGELIST.md b/CHANGELIST.md
index f94cdab3..8535fed7 100644
--- a/CHANGELIST.md
+++ b/CHANGELIST.md
@@ -5,6 +5,7 @@
 - Remove `_drive.txt` from required UIC outputs
 - Make `use` flag required for MPF.Check
 - Add dumping date to log
+- Non-zero data start only for audio discs
 
 ### 2.6.2 (2023-07-25)
 
diff --git a/MPF.Modules/Redumper/Parameters.cs b/MPF.Modules/Redumper/Parameters.cs
index 6e15ae3c..6ed712d1 100644
--- a/MPF.Modules/Redumper/Parameters.cs
+++ b/MPF.Modules/Redumper/Parameters.cs
@@ -284,9 +284,12 @@ namespace MPF.Modules.Redumper
                         info.CommonDiscInfo.CommentsSpecialFields[SiteCode.UniversalHash] = universalHash;
                     }
 
-                    // Attempt to get the non-zero data start
-                    string ringNonZeroDataStart = GetRingNonZeroDataStart($"{basePath}.log") ?? string.Empty;
-                    info.CommonDiscInfo.CommentsSpecialFields[SiteCode.RingNonZeroDataStart] = ringNonZeroDataStart;
+                    // Attempt to get the non-zero data start, if it's an audio disc
+                    if (this.System.IsAudio())
+                    {
+                        string ringNonZeroDataStart = GetRingNonZeroDataStart($"{basePath}.log") ?? string.Empty;
+                        info.CommonDiscInfo.CommentsSpecialFields[SiteCode.RingNonZeroDataStart] = ringNonZeroDataStart;
+                    }
 
                     break;
 
@@ -879,7 +882,7 @@ namespace MPF.Modules.Redumper
                 default:
                     BaseCommand = null;
                     return;
-            }  
+            }
 
             this[FlagStrings.Drive] = true;
             DriveValue = driveLetter.ToString();