Update lcms (#544)

[openjpeg.git] / thirdparty / liblcms2 / src / cmspcs.c

diff --git a/thirdparty/liblcms2/src/cmspcs.c b/thirdparty/liblcms2/src/cmspcs.c
index 102cd7d21ed85976c30f68236750ce321c340e44..a08538d3764c0fb02ca9e5c0347145b903370304 100644 (file)
--- a/thirdparty/liblcms2/src/cmspcs.c
+++ b/thirdparty/liblcms2/src/cmspcs.c
@@ -1,7 +1,7 @@
 //---------------------------------------------------------------------------------
 //
 //  Little Color Management System
-//  Copyright (c) 1998-2010 Marti Maria Saguer
+//  Copyright (c) 1998-2016 Marti Maria Saguer
 //
 // Permission is hereby granted, free of charge, to any person obtaining
 // a copy of this software and associated documentation files (the "Software"),
@@ -106,6 +106,15 @@ void CMSEXPORT cmsxyY2XYZ(cmsCIEXYZ* Dest, const cmsCIExyY* Source)
     Dest -> Z = ((1 - Source -> x - Source -> y) / Source -> y) * Source -> Y;
 }
 
+/*
+       The break point (24/116)^3 = (6/29)^3 is a very small amount of tristimulus 
+       primary (0.008856).  Generally, this only happens for 
+       nearly ideal blacks and for some orange / amber colors in transmission mode.  
+       For example, the Z value of the orange turn indicator lamp lens on an 
+       automobile will often be below this value.  But the Z does not 
+       contribute to the perceived color directly.
+*/
+
 static
 cmsFloat64Number f(cmsFloat64Number t)
 {