Merge master.

[dcpomatic.git] / src / lib / colour_conversion.cc

diff --git a/src/lib/colour_conversion.cc b/src/lib/colour_conversion.cc
index aacefaa05502c9202178b2637dfa7dd5dbd50df6..5ecbf4021ce4efb30f8ccb39de37eea6f127820b 100644 (file)
--- a/src/lib/colour_conversion.cc
+++ b/src/lib/colour_conversion.cc
@@ -30,7 +30,6 @@
 
 using std::list;
 using std::string;
-using std::stringstream;
 using std::cout;
 using std::vector;
 using boost::shared_ptr;
@@ -85,6 +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
 {