fix: Potentially fix crash in PIN2DMD driver.

freezy · Jun 27, 2023 · 86fc760 · 86fc760
1 parent 90cc33f
commit 86fc760
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/LibDmd/Frame/DmdFrame.cs b/LibDmd/Frame/DmdFrame.cs
@@ -242,6 +242,7 @@ public DmdFrame ConvertToGray4()
 
 				switch (BitLength) {
 					case 2:
+					case 3:
 						return Update(FrameUtil.ConvertGrayToGray(Data, 0x0, 0x1, 0x4, 0xf), 4);
 					case 4:
 						throw new ArgumentException("Frame is already gray4.");
@@ -250,7 +251,7 @@ public DmdFrame ConvertToGray4()
 					case 24:
 						return Update(ImageUtil.ConvertToGray(Dimensions, Data, 16), 4);
 					default:
-						throw new ArgumentException("Invalid bit length.");
+						throw new ArgumentException($"Invalid bit length ({BitLength}).");
 				}
 			}
 		}