From 1d031966e08aef92ef742ae3cf91e1addaf95a47 Mon Sep 17 00:00:00 2001
From: "Benjamin A. Beasley" <code@musicinmybrain.net>
Date: Wed, 8 Dec 2021 18:14:54 -0500
Subject: [PATCH 1/4] Use a patch file to document changes from upstream
 stb_image.h

---
 thirdparty/stb/stb_image.patch | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 thirdparty/stb/stb_image.patch

diff --git a/thirdparty/stb/stb_image.patch b/thirdparty/stb/stb_image.patch
new file mode 100644
index 0000000..5153728
--- /dev/null
+++ b/thirdparty/stb/stb_image.patch
@@ -0,0 +1,15 @@
+diff -Naur upstream/stb_image.h zxing/stb_image.h
+--- upstream/stb_image.h	2021-12-08 18:11:28.170529096 -0500
++++ zxing/stb_image.h	2021-12-08 18:06:42.706717697 -0500
+@@ -1644,7 +1644,11 @@
+ 
+ static stbi_uc stbi__compute_y(int r, int g, int b)
+ {
++#if 0 // ori
+    return (stbi_uc) (((r*77) + (g*150) +  (29*b)) >> 8);
++#else // zxing (see ReadBarcode.cpp:RGBToGray)
++   return (stbi_uc) ((306 * r + 601 * g + 117 * b + 0x200) >> 10);
++#endif
+ }
+ #endif
+ 
-- 
2.33.1