Very basics of colour conversion configuration.

1 files changed, 101 insertions, 0 deletions

diff --git a/src/lib/colour_conversion.cc b/src/lib/colour_conversion.cc
new file mode 100644
index 000000000..96dc0e2c9
--- /dev/null
+++ b/src/lib/colour_conversion.cc
@@ -0,0 +1,101 @@
+/*
+    Copyright (C) 2013 Carl Hetherington <cth@carlh.net>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include <boost/lexical_cast.hpp>
+#include <libxml++/libxml++.h>
+#include <libdcp/colour_matrix.h>
+#include <libcxml/cxml.h>
+#include "colour_conversion.h"
+
+#include "i18n.h"
+
+using std::list;
+using std::string;
+using boost::shared_ptr;
+using boost::lexical_cast;
+
+ColourConversion::ColourConversion ()
+	: name (_("Untitled"))
+	, input_gamma (2.4)
+	, input_gamma_linearised (true)
+	, matrix (3, 3)
+	, output_gamma (2.6)
+{
+	for (int i = 0; i < 3; ++i) {
+		for (int j = 0; j < 3; ++j) {
+			matrix (i, j) = libdcp::colour_matrix::xyz_to_rgb[i][j];
+		}
+	}
+}
+
+ColourConversion::ColourConversion (string n, float i, bool il, float const m[3][3], float o)
+	: name (n)
+	, input_gamma (i)
+	, input_gamma_linearised (il)
+	, matrix (3, 3)
+	, output_gamma (o)
+{
+	for (int i = 0; i < 3; ++i) {
+		for (int j = 0; j < 3; ++j) {
+			matrix (i, j) = m[i][j];
+		}
+	}
+}
+
+ColourConversion::ColourConversion (shared_ptr<cxml::Node> node)
+	: matrix (3, 3)
+{
+	name = node->string_child ("Name");
+	input_gamma = node->number_child<float> ("InputGamma");
+	input_gamma_linearised = node->bool_child ("InputGammaLinearised");
+
+	for (int i = 0; i < 3; ++i) {
+		for (int j = 0; j < 3; ++j) {
+			matrix (i, j) = 0;
+		}
+	}
+
+	list<shared_ptr<cxml::Node> > m = node->node_children ("Matrix");
+	for (list<shared_ptr<cxml::Node> >::iterator i = m.begin(); i != m.end(); ++i) {
+		int const ti = (*i)->number_attribute<int> ("i");
+		int const tj = (*i)->number_attribute<int> ("j");
+		matrix(ti, tj) = lexical_cast<float> ((*i)->content ());
+	}
+
+	output_gamma = node->number_child<float> ("OutputGamma");
+}
+
+void
+ColourConversion::as_xml (xmlpp::Node* node) const
+{
+	node->add_child("Name")->add_child_text (name);
+	node->add_child("InputGamma")->add_child_text (lexical_cast<string> (input_gamma));
+	node->add_child("InputGammaLinearised")->add_child_text (input_gamma_linearised ? "1" : "0");
+
+	for (int i = 0; i < 3; ++i) {
+		for (int j = 0; j < 3; ++j) {
+			xmlpp::Element* m = node->add_child("Matrix");
+			m->set_attribute ("i", lexical_cast<string> (i));
+			m->set_attribute ("j", lexical_cast<string> (j));
+			m->add_child_text (lexical_cast<string> (matrix (i, j)));
+		}
+	}
+
+	node->add_child("OutputGamma")->add_child_text (lexical_cast<string> (output_gamma));
+}