From 87fb52e5aa0805b05e9dc4bb0df76804cd7f39c8 Mon Sep 17 00:00:00 2001
From: James Jackson-South <james_south@hotmail.com>
Date: Sun, 15 Apr 2018 10:20:13 +1000
Subject: [PATCH] VerifySpectralCorrectness_PdfJs now passes...

... Maybe the new quantization tables are incorrect?
---
 .../Formats/Jpeg/PdfJsPort/Components/PdfJsFrameComponent.cs   | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/ImageSharp/Formats/Jpeg/PdfJsPort/Components/PdfJsFrameComponent.cs b/src/ImageSharp/Formats/Jpeg/PdfJsPort/Components/PdfJsFrameComponent.cs
index 789673a4ad..25ccf863af 100644
--- a/src/ImageSharp/Formats/Jpeg/PdfJsPort/Components/PdfJsFrameComponent.cs
+++ b/src/ImageSharp/Formats/Jpeg/PdfJsPort/Components/PdfJsFrameComponent.cs
@@ -136,7 +136,8 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.PdfJsPort.Components
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public int GetBlockBufferOffset(int row, int col)
         {
-            return 64 * (((this.WidthInBlocks + 1) * row) + col);
+            // return 64 * (((this.WidthInBlocks + 1) * row) + col);
+            return 64 * ((this.SpectralBlocks.Width * row) + col);
         }
     }
 }
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