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/*
Copyright (C) 2013-2021 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
DCP-o-matic 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.
DCP-o-matic 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 DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file test/colour_conversion_test.cc
* @brief Test ColourConversion class.
* @ingroup selfcontained
*/
#include "lib/colour_conversion.h"
#include "lib/film.h"
#include <dcp/gamma_transfer_function.h>
#include <libxml++/libxml++.h>
#include <boost/test/unit_test.hpp>
#include <iostream>
using std::cout;
using std::make_shared;
BOOST_AUTO_TEST_CASE (colour_conversion_test1)
{
ColourConversion A (dcp::ColourConversion::srgb_to_xyz());
ColourConversion B (dcp::ColourConversion::rec709_to_xyz());
BOOST_CHECK_EQUAL (A.identifier(), "ef8af1b1fda1dfe9656dc99b7a9532c7");
BOOST_CHECK_EQUAL (B.identifier(), "e6bd82fd7ebeabe75742fbece0cbf652");
}
BOOST_AUTO_TEST_CASE (colour_conversion_test2)
{
ColourConversion A (dcp::ColourConversion::srgb_to_xyz ());
xmlpp::Document doc;
auto root = doc.create_root_node ("Test");
A.as_xml (root);
BOOST_CHECK_EQUAL (
doc.write_to_string_formatted ("UTF-8"),
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
"<Test>\n"
" <InputTransferFunction>\n"
" <Type>ModifiedGamma</Type>\n"
" <Power>2.4</Power>\n"
" <Threshold>0.04045</Threshold>\n"
" <A>0.055</A>\n"
" <B>12.92</B>\n"
" </InputTransferFunction>\n"
" <YUVToRGB>0</YUVToRGB>\n"
" <RedX>0.64</RedX>\n"
" <RedY>0.33</RedY>\n"
" <GreenX>0.3</GreenX>\n"
" <GreenY>0.6</GreenY>\n"
" <BlueX>0.15</BlueX>\n"
" <BlueY>0.06</BlueY>\n"
" <WhiteX>0.3127</WhiteX>\n"
" <WhiteY>0.329</WhiteY>\n"
" <OutputGamma>2.6</OutputGamma>\n"
"</Test>\n"
);
}
BOOST_AUTO_TEST_CASE (colour_conversion_test3)
{
ColourConversion A (dcp::ColourConversion::rec709_to_xyz());
xmlpp::Document doc;
auto root = doc.create_root_node ("Test");
A.as_xml (root);
BOOST_CHECK_EQUAL (
doc.write_to_string_formatted ("UTF-8"),
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
"<Test>\n"
" <InputTransferFunction>\n"
" <Type>Gamma</Type>\n"
" <Gamma>2.2</Gamma>\n"
" </InputTransferFunction>\n"
" <YUVToRGB>1</YUVToRGB>\n"
" <RedX>0.64</RedX>\n"
" <RedY>0.33</RedY>\n"
" <GreenX>0.3</GreenX>\n"
" <GreenY>0.6</GreenY>\n"
" <BlueX>0.15</BlueX>\n"
" <BlueY>0.06</BlueY>\n"
" <WhiteX>0.3127</WhiteX>\n"
" <WhiteY>0.329</WhiteY>\n"
" <OutputGamma>2.6</OutputGamma>\n"
"</Test>\n"
);
}
/** Test a round trip via the XML representation */
BOOST_AUTO_TEST_CASE (colour_conversion_test4)
{
for (auto const& i: PresetColourConversion::all()) {
xmlpp::Document out;
auto out_root = out.create_root_node("Test");
i.conversion.as_xml (out_root);
auto in = make_shared<cxml::Document> ("Test");
in->read_string (out.write_to_string("UTF-8"));
BOOST_CHECK (ColourConversion::from_xml(in, Film::current_state_version).get() == i.conversion);
}
}
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