X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fcolour_conversion.cc;h=6dd4ab87675008abee80a9f517049e351ce75f16;hb=8596e31595c9aba128078ba4a3950543ea291f98;hp=c836cc2715728e8c75f09eb5271d4b003748dbc3;hpb=c6c082c4a8016f85ba4207f4b8ccee1d5770e4a4;p=dcpomatic.git

diff --git a/src/lib/colour_conversion.cc b/src/lib/colour_conversion.cc
index c836cc271..6dd4ab876 100644
--- a/src/lib/colour_conversion.cc
+++ b/src/lib/colour_conversion.cc
@@ -17,14 +17,14 @@
 
 */
 
-#include <libxml++/libxml++.h>
-#include <dcp/colour_matrix.h>
-#include <dcp/raw_convert.h>
-#include <libcxml/cxml.h>
 #include "config.h"
 #include "colour_conversion.h"
 #include "util.h"
 #include "md5_digester.h"
+#include <dcp/colour_matrix.h>
+#include <dcp/raw_convert.h>
+#include <libcxml/cxml.h>
+#include <libxml++/libxml++.h>
 
 #include "i18n.h"
 
@@ -84,6 +84,16 @@ ColourConversion::ColourConversion (cxml::NodePtr node)
 	output_gamma = node->number_child<double> ("OutputGamma");
 }
 
+boost::optional<ColourConversion>
+ColourConversion::from_xml (cxml::NodePtr node)
+{
+	if (!node->optional_node_child ("InputGamma")) {
+		return boost::optional<ColourConversion> ();
+	}
+
+	return ColourConversion (node);
+}
+
 void
 ColourConversion::as_xml (xmlpp::Node* node) const
 {