[gegl] exr-load: set up babl space from chromaticities

[Øyvind "pippin" Kolås <ok src gnome org>]

commit 25c0c9c4a1f78782e357865e50e1792782727434
Author: Øyvind Kolås <pippin gimp org>
Date:   Mon Jul 9 16:51:03 2018 +0200

    exr-load: set up babl space from chromaticities

 operations/external/exr-load.cpp | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)
---
diff --git a/operations/external/exr-load.cpp b/operations/external/exr-load.cpp
index e4c98f757..fb0487d4e 100644
--- a/operations/external/exr-load.cpp
+++ b/operations/external/exr-load.cpp
@@ -37,6 +37,7 @@ extern "C" {
 #include <ImfChannelList.h>
 #include <ImfRgbaFile.h>
 #include <ImfRgbaYca.h>
+#include <ImfChromaticities.h>
 #include <ImfStandardAttributes.h>
 
 #include <stdio.h>
@@ -538,6 +539,7 @@ query_exr (const gchar *path,
 {
   gchar format_string[16];
   gint format_flags = 0;
+  const Babl *space = NULL;
 
   try
     {
@@ -550,6 +552,13 @@ query_exr (const gchar *path,
       *width  = dw.max.x - dw.min.x + 1;
       *height = dw.max.y - dw.min.y + 1;
 
+      if (hasChromaticities(file.header()))
+      {
+        const Chromaticities &c2 = chromaticities (file.header());
+        space = babl_chromaticities_make_space
+ (NULL, c2.white[0], c2.white[1], c2.red[0], c2.red[1], c2.green[0], c2.green[1], c2.blue[0], c2.blue[1], 
babl_trc ("linear"), babl_trc ("linear"), babl_trc ("linear"), 1);
+      }
+
       if (ch.findChannel ("R") || ch.findChannel ("G") || ch.findChannel ("B"))
         {
           strcpy (format_string, "RGB");
@@ -604,6 +613,8 @@ query_exr (const gchar *path,
             strcat (format_string, " float");
             break;
         }
+
+      
     }
   catch (...)
     {
@@ -612,7 +623,7 @@ query_exr (const gchar *path,
     }
 
   *ff_ptr = format_flags;
-  *format = (void*)babl_format (format_string);
+  *format = (void*)babl_format_with_space (format_string, space);
   return TRUE;
 }