From 65a14051feea1497fd39f38d24637761dc989f8c Mon Sep 17 00:00:00 2001
From: Alberto Griggio <agriggio@users.noreply.github.com>
Date: Thu, 18 Jan 2024 14:19:30 +0100
Subject: [PATCH] rawimage: put global black level (as found in DNG converted
 files) for xtrans files where the code expects to find it

---
 rtengine/rawimage.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/rtengine/rawimage.cc b/rtengine/rawimage.cc
index 704db176f..301107034 100644
--- a/rtengine/rawimage.cc
+++ b/rtengine/rawimage.cc
@@ -606,6 +606,11 @@ int RawImage::loadRaw(bool loadData, unsigned int imageNum, bool closeFile, Prog
         for (size_t i = 0; i < sizeof(cblack)/sizeof(unsigned); ++i) {
             cblack[i] = cd.cblack[i];
         }
+        // put the global black level where the rest of the code expects to find it
+        if (dng_version && isXtrans() && cblack[6] == 0 && black > 0) {
+            cblack[6] = black;
+        }
+
         for (int i = 0; i < 4; ++i) {
             cam_mul[i] = cd.cam_mul[i];
             pre_mul[i] = cd.pre_mul[i];