test/colour_conversion_test.cc

   1 /*
   2     Copyright (C) 2013-2015 Carl Hetherington <cth@carlh.net>
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 /** @file  test/colour_conversion_test.cc
  21  *  @brief Various tests of ColourConversion.
  22  */
  23
  24 #include "lib/colour_conversion.h"
  25 #include "lib/film.h"
  26 #include <dcp/colour_matrix.h>
  27 #include <dcp/gamma_transfer_function.h>
  28 #include <libxml++/libxml++.h>
  29 #include <boost/test/unit_test.hpp>
  30 #include <boost/foreach.hpp>
  31
  32 using std::cout;
  33 using boost::shared_ptr;
  34
  35 BOOST_AUTO_TEST_CASE (colour_conversion_test1)
  36 {
  37         ColourConversion A (dcp::ColourConversion::srgb_to_xyz ());
  38         ColourConversion B (dcp::ColourConversion::rec709_to_xyz ());
  39
  40         BOOST_CHECK_EQUAL (A.identifier(), "9840c601d2775bf1b3847254bbaa36a9");
  41         BOOST_CHECK_EQUAL (B.identifier(), "58151ac92fdf333663a62c9a8ba5c5f4");
  42 }
  43
  44 BOOST_AUTO_TEST_CASE (colour_conversion_test2)
  45 {
  46         ColourConversion A (dcp::ColourConversion::srgb_to_xyz ());
  47         xmlpp::Document doc;
  48         xmlpp::Element* root = doc.create_root_node ("Test");
  49         A.as_xml (root);
  50         BOOST_CHECK_EQUAL (
  51                 doc.write_to_string_formatted ("UTF-8"),
  52                 "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
  53                 "<Test>\n"
  54                 "  <InputTransferFunction>\n"
  55                 "    <Type>ModifiedGamma</Type>\n"
  56                 "    <Power>2.4</Power>\n"
  57                 "    <Threshold>0.04045</Threshold>\n"
  58                 "    <A>0.055</A>\n"
  59                 "    <B>12.92</B>\n"
  60                 "  </InputTransferFunction>\n"
  61                 "  <YUVToRGB>0</YUVToRGB>\n"
  62                 "  <RedX>0.64</RedX>\n"
  63                 "  <RedY>0.33</RedY>\n"
  64                 "  <GreenX>0.3</GreenX>\n"
  65                 "  <GreenY>0.6</GreenY>\n"
  66                 "  <BlueX>0.15</BlueX>\n"
  67                 "  <BlueY>0.06</BlueY>\n"
  68                 "  <WhiteX>0.3127</WhiteX>\n"
  69                 "  <WhiteY>0.329</WhiteY>\n"
  70                 "  <OutputGamma>2.6</OutputGamma>\n"
  71                 "</Test>\n"
  72                 );
  73 }
  74
  75 BOOST_AUTO_TEST_CASE (colour_conversion_test3)
  76 {
  77         ColourConversion A (dcp::ColourConversion::rec709_to_xyz ());
  78         xmlpp::Document doc;
  79         xmlpp::Element* root = doc.create_root_node ("Test");
  80         A.as_xml (root);
  81         BOOST_CHECK_EQUAL (
  82                 doc.write_to_string_formatted ("UTF-8"),
  83                 "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
  84                 "<Test>\n"
  85                 "  <InputTransferFunction>\n"
  86                 "    <Type>Gamma</Type>\n"
  87                 "    <Gamma>2.2</Gamma>\n"
  88                 "  </InputTransferFunction>\n"
  89                 "  <YUVToRGB>1</YUVToRGB>\n"
  90                 "  <RedX>0.64</RedX>\n"
  91                 "  <RedY>0.33</RedY>\n"
  92                 "  <GreenX>0.3</GreenX>\n"
  93                 "  <GreenY>0.6</GreenY>\n"
  94                 "  <BlueX>0.15</BlueX>\n"
  95                 "  <BlueY>0.06</BlueY>\n"
  96                 "  <WhiteX>0.3127</WhiteX>\n"
  97                 "  <WhiteY>0.329</WhiteY>\n"
  98                 "  <OutputGamma>2.6</OutputGamma>\n"
  99                 "</Test>\n"
 100                 );
 101 }
 102
 103 /** Test a round trip via the XML representation */
 104 BOOST_AUTO_TEST_CASE (colour_conversion_test4)
 105 {
 106         BOOST_FOREACH (PresetColourConversion const & i, PresetColourConversion::all ()) {
 107                 xmlpp::Document out;
 108                 xmlpp::Element* out_root = out.create_root_node ("Test");
 109                 i.conversion.as_xml (out_root);
 110                 shared_ptr<cxml::Document> in (new cxml::Document ("Test"));
 111                 in->read_string (out.write_to_string ("UTF-8"));
 112                 BOOST_CHECK (ColourConversion::from_xml (in, Film::current_state_version).get () == i.conversion);
 113         }
 114 }