test/colour_conversion_test.cc

   1 /*
   2     Copyright (C) 2013-2021 Carl Hetherington <cth@carlh.net>
   3
   4     This file is part of DCP-o-matic.
   5
   6     DCP-o-matic is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     DCP-o-matic is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 */
  20
  21
  22 /** @file  test/colour_conversion_test.cc
  23  *  @brief Test ColourConversion class.
  24  *  @ingroup selfcontained
  25  */
  26
  27
  28 #include "lib/colour_conversion.h"
  29 #include "lib/film.h"
  30 #include <dcp/gamma_transfer_function.h>
  31 #include <libxml++/libxml++.h>
  32 #include <boost/test/unit_test.hpp>
  33 #include <iostream>
  34
  35
  36 using std::cout;
  37 using std::make_shared;
  38 using std::shared_ptr;
  39
  40
  41 BOOST_AUTO_TEST_CASE (colour_conversion_test1)
  42 {
  43         ColourConversion A (dcp::ColourConversion::srgb_to_xyz());
  44         ColourConversion B (dcp::ColourConversion::rec709_to_xyz());
  45
  46         BOOST_CHECK_EQUAL (A.identifier(), "9840c601d2775bf1b3847254bbaa36a9");
  47         BOOST_CHECK_EQUAL (B.identifier(), "58151ac92fdf333663a62c9a8ba5c5f4");
  48 }
  49
  50
  51 BOOST_AUTO_TEST_CASE (colour_conversion_test2)
  52 {
  53         ColourConversion A (dcp::ColourConversion::srgb_to_xyz ());
  54         xmlpp::Document doc;
  55         auto root = doc.create_root_node ("Test");
  56         A.as_xml (root);
  57         BOOST_CHECK_EQUAL (
  58                 doc.write_to_string_formatted ("UTF-8"),
  59                 "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
  60                 "<Test>\n"
  61                 "  <InputTransferFunction>\n"
  62                 "    <Type>ModifiedGamma</Type>\n"
  63                 "    <Power>2.4</Power>\n"
  64                 "    <Threshold>0.04045</Threshold>\n"
  65                 "    <A>0.055</A>\n"
  66                 "    <B>12.92</B>\n"
  67                 "  </InputTransferFunction>\n"
  68                 "  <YUVToRGB>0</YUVToRGB>\n"
  69                 "  <RedX>0.64</RedX>\n"
  70                 "  <RedY>0.33</RedY>\n"
  71                 "  <GreenX>0.3</GreenX>\n"
  72                 "  <GreenY>0.6</GreenY>\n"
  73                 "  <BlueX>0.15</BlueX>\n"
  74                 "  <BlueY>0.06</BlueY>\n"
  75                 "  <WhiteX>0.3127</WhiteX>\n"
  76                 "  <WhiteY>0.329</WhiteY>\n"
  77                 "  <OutputGamma>2.6</OutputGamma>\n"
  78                 "</Test>\n"
  79                 );
  80 }
  81
  82
  83 BOOST_AUTO_TEST_CASE (colour_conversion_test3)
  84 {
  85         ColourConversion A (dcp::ColourConversion::rec709_to_xyz());
  86         xmlpp::Document doc;
  87         auto root = doc.create_root_node ("Test");
  88         A.as_xml (root);
  89         BOOST_CHECK_EQUAL (
  90                 doc.write_to_string_formatted ("UTF-8"),
  91                 "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
  92                 "<Test>\n"
  93                 "  <InputTransferFunction>\n"
  94                 "    <Type>Gamma</Type>\n"
  95                 "    <Gamma>2.2</Gamma>\n"
  96                 "  </InputTransferFunction>\n"
  97                 "  <YUVToRGB>1</YUVToRGB>\n"
  98                 "  <RedX>0.64</RedX>\n"
  99                 "  <RedY>0.33</RedY>\n"
 100                 "  <GreenX>0.3</GreenX>\n"
 101                 "  <GreenY>0.6</GreenY>\n"
 102                 "  <BlueX>0.15</BlueX>\n"
 103                 "  <BlueY>0.06</BlueY>\n"
 104                 "  <WhiteX>0.3127</WhiteX>\n"
 105                 "  <WhiteY>0.329</WhiteY>\n"
 106                 "  <OutputGamma>2.6</OutputGamma>\n"
 107                 "</Test>\n"
 108                 );
 109 }
 110
 111
 112 /** Test a round trip via the XML representation */
 113 BOOST_AUTO_TEST_CASE (colour_conversion_test4)
 114 {
 115         for (auto const& i: PresetColourConversion::all()) {
 116                 xmlpp::Document out;
 117                 auto out_root = out.create_root_node("Test");
 118                 i.conversion.as_xml (out_root);
 119                 auto in = make_shared<cxml::Document> ("Test");
 120                 in->read_string (out.write_to_string("UTF-8"));
 121                 BOOST_CHECK (ColourConversion::from_xml(in, Film::current_state_version).get() == i.conversion);
 122         }
 123 }