From bda23b935056cfd96a64d49b9325b2cdbc88dd7f Mon Sep 17 00:00:00 2001
From: "U-PC-BUREAU\\jacques" <jdesmis@gmail.com>
Date: Sun, 18 Nov 2018 08:28:27 +0100
Subject: [PATCH] Change Tag dmdd for RTv2_Medium and code for TRC=custom and
 slope=0

---
 rtdata/iccprofiles/output/RTv2_Medium.icc | Bin 876 -> 856 bytes
 rtengine/iplab2rgb.cc                     |   8 ++++++--
 rtgui/iccprofilecreator.cc                |   2 ++
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/rtdata/iccprofiles/output/RTv2_Medium.icc b/rtdata/iccprofiles/output/RTv2_Medium.icc
index 065c43bc44ed6cbe53fd332875a727a48fc03eb0..454f40d9086dc16fbed0f7c4b8a55fb2851b53a6 100644
GIT binary patch
delta 100
zcmaFEc7u(Dfq^+<BFlHtj+ETI6b1&SBMb}-4N2JrB|r(6%>s<(j3)f)MtVjD#Rhr?
lAfO0T00#UF=?q2;dO&QzPz=O+Kn#P5lP5B{Prk-94FFr86bt|W

delta 121
zcmcb?_J)mxfq^+^BFlHtIVrh$DGUruHy9Wg8j`XLN`Mj(n*|un8QnzFjr2?mK%m&r
zNYB#9*wDa05vU9dL>bZ<j2QG7Oc)H{u$aLREM^HLje%^CjN;@#M(2qI9FvbQO#uKl
C&KHsZ

diff --git a/rtengine/iplab2rgb.cc b/rtengine/iplab2rgb.cc
index b2fd20cb8..9094f3526 100644
--- a/rtengine/iplab2rgb.cc
+++ b/rtengine/iplab2rgb.cc
@@ -367,8 +367,12 @@ Imagefloat* ImProcFunctions::lab2rgbOut(LabImage* lab, int cx, int cy, int cw, i
         gammaParams[6] = 0.0;
 
         cmsToneCurve* GammaTRC[3];
-
-        GammaTRC[0] = GammaTRC[1] = GammaTRC[2] = cmsBuildParametricToneCurve(nullptr, 5, gammaParams); //5 = smoother than 4
+        if(slopetag == 0.) {
+            GammaTRC[0] = GammaTRC[1] = GammaTRC[2] = cmsBuildGamma(NULL, gammatag);
+        }
+        else {
+            GammaTRC[0] = GammaTRC[1] = GammaTRC[2] = cmsBuildParametricToneCurve(nullptr, 5, gammaParams); //5 = smoother than 4
+        }
         cmsWriteTag(oprof, cmsSigRedTRCTag, GammaTRC[0]);
         cmsWriteTag(oprof, cmsSigGreenTRCTag, GammaTRC[1]);
         cmsWriteTag(oprof, cmsSigBlueTRCTag, GammaTRC[2]);
diff --git a/rtgui/iccprofilecreator.cc b/rtgui/iccprofilecreator.cc
index 03d46471d..97d22ca0b 100644
--- a/rtgui/iccprofilecreator.cc
+++ b/rtgui/iccprofilecreator.cc
@@ -1310,6 +1310,8 @@ void ICCProfileCreator::savePressed()
         GammaTRC[0] = GammaTRC[1] = GammaTRC[2] = cmsBuildGamma(NULL, 1.80078125);
     } else if (gammaPreset == "linear_g1.0") {
         GammaTRC[0] = GammaTRC[1] = GammaTRC[2] = cmsBuildGamma(NULL, 1.0);
+    } else if(gammaPreset == "Custom" && slope == 0.0) {
+        GammaTRC[0] = GammaTRC[1] = GammaTRC[2] = cmsBuildGamma(NULL, gamma);
     } else {
         GammaTRC[0] = GammaTRC[1] = GammaTRC[2] = cmsBuildParametricToneCurve(nullptr, 5, ga);
     }