Try removing the DCI companding from the xyz->rgb conversion.

diff --git a/src/util.cc b/src/util.cc
index a6d65374bda63ada66e053b9aaaad3ad04ead33b..d5565245726ca43ae17483b6c9bdf1938277baf0 100644 (file)
--- a/src/util.cc
+++ b/src/util.cc
@@ -242,11 +242,13 @@ libdcp::xyz_to_rgb (opj_image_t* xyz_frame, shared_ptr<const GammaLUT> lut_in, s
                        s.x = lut_in->lut()[*xyz_x++];
                        s.y = lut_in->lut()[*xyz_y++];
                        s.z = lut_in->lut()[*xyz_z++];
-                       
+
+#if 0                  
                        /* DCI companding */
                        s.x /= dci_coefficient;
                        s.y /= dci_coefficient;
                        s.z /= dci_coefficient;
+#endif                 
                        
                        /* XYZ to RGB */
                        d.r = ((s.x * colour_matrix[0][0]) + (s.y * colour_matrix[0][1]) + (s.z * colour_matrix[0][2]));