2 Copyright (C) 2013-2021 Carl Hetherington <cth@carlh.net>
4 This file is part of DCP-o-matic.
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.
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.
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/>.
22 #include "colour_conversion.h"
25 #include "player_video.h"
27 #include <dcp/chromaticity.h>
28 #include <dcp/gamma_transfer_function.h>
29 #include <dcp/identity_transfer_function.h>
30 #include <dcp/modified_gamma_transfer_function.h>
31 #include <dcp/openjpeg_image.h>
32 #include <dcp/raw_convert.h>
33 #include <dcp/rgb_xyz.h>
34 #include <dcp/s_gamut3_transfer_function.h>
35 #include <dcp/warnings.h>
36 #include <libcxml/cxml.h>
37 LIBDCP_DISABLE_WARNINGS
38 #include <libxml++/libxml++.h>
39 LIBDCP_ENABLE_WARNINGS
46 using std::dynamic_pointer_cast;
48 using std::make_shared;
49 using std::shared_ptr;
52 using boost::optional;
53 #if BOOST_VERSION >= 106100
54 using namespace boost::placeholders;
56 using dcp::raw_convert;
59 vector<PresetColourConversion> PresetColourConversion::_presets;
62 ColourConversion::ColourConversion ()
63 : dcp::ColourConversion (dcp::ColourConversion::srgb_to_xyz ())
68 ColourConversion::ColourConversion (dcp::ColourConversion conversion_)
69 : dcp::ColourConversion (conversion_)
74 ColourConversion::ColourConversion (cxml::NodePtr node, int version)
76 shared_ptr<dcp::TransferFunction> in;
82 auto in_node = node->node_child ("InputTransferFunction");
83 auto in_type = in_node->string_child ("Type");
84 if (in_type == "Gamma") {
85 _in = make_shared<dcp::GammaTransferFunction>(in_node->number_child<double> ("Gamma"));
86 } else if (in_type == "ModifiedGamma") {
87 _in = make_shared<dcp::ModifiedGammaTransferFunction>(
88 in_node->number_child<double>("Power"),
89 in_node->number_child<double>("Threshold"),
90 in_node->number_child<double>("A"),
91 in_node->number_child<double>("B")
93 } else if (in_type == "SGamut3") {
94 _in = make_shared<dcp::SGamut3TransferFunction>();
101 if (node->bool_child ("InputGammaLinearised")) {
102 _in.reset (new dcp::ModifiedGammaTransferFunction (node->number_child<double> ("InputGamma"), 0.04045, 0.055, 12.92));
104 _in.reset (new dcp::GammaTransferFunction (node->number_child<double> ("InputGamma")));
108 _yuv_to_rgb = static_cast<dcp::YUVToRGB>(node->optional_number_child<int>("YUVToRGB").get_value_or(static_cast<int>(dcp::YUVToRGB::REC601)));
110 auto m = node->node_children ("Matrix");
112 /* Read in old <Matrix> nodes and convert them to chromaticities */
113 boost::numeric::ublas::matrix<double> C (3, 3);
115 int const ti = i->number_attribute<int>("i");
116 int const tj = i->number_attribute<int>("j");
117 C(ti, tj) = raw_convert<double>(i->content());
120 double const rd = C(0, 0) + C(1, 0) + C(2, 0);
121 _red = dcp::Chromaticity (C(0, 0) / rd, C(1, 0) / rd);
122 double const gd = C(0, 1) + C(1, 1) + C(2, 1);
123 _green = dcp::Chromaticity (C(0, 1) / gd, C(1, 1) / gd);
124 double const bd = C(0, 2) + C(1, 2) + C(2, 2);
125 _blue = dcp::Chromaticity (C(0, 2) / bd, C(1, 2) / bd);
126 double const wd = C(0, 0) + C(0, 1) + C(0, 2) + C(1, 0) + C(1, 1) + C(1, 2) + C(2, 0) + C(2, 1) + C(2, 2);
127 _white = dcp::Chromaticity ((C(0, 0) + C(0, 1) + C(0, 2)) / wd, (C(1, 0) + C(1, 1) + C(1, 2)) / wd);
129 /* New-style chromaticities */
130 _red = dcp::Chromaticity (node->number_child<double> ("RedX"), node->number_child<double> ("RedY"));
131 _green = dcp::Chromaticity (node->number_child<double> ("GreenX"), node->number_child<double> ("GreenY"));
132 _blue = dcp::Chromaticity (node->number_child<double> ("BlueX"), node->number_child<double> ("BlueY"));
133 _white = dcp::Chromaticity (node->number_child<double> ("WhiteX"), node->number_child<double> ("WhiteY"));
134 if (node->optional_node_child ("AdjustedWhiteX")) {
135 _adjusted_white = dcp::Chromaticity (
136 node->number_child<double> ("AdjustedWhiteX"), node->number_child<double> ("AdjustedWhiteY")
141 auto gamma = node->optional_number_child<double>("OutputGamma");
143 _out = make_shared<dcp::GammaTransferFunction>(node->number_child<double>("OutputGamma"));
145 _out = make_shared<dcp::IdentityTransferFunction>();
149 boost::optional<ColourConversion>
150 ColourConversion::from_xml (cxml::NodePtr node, int version)
152 if (!node->optional_node_child ("InputTransferFunction")) {
153 return boost::optional<ColourConversion> ();
156 return ColourConversion (node, version);
160 ColourConversion::as_xml (xmlpp::Node* node) const
162 auto in_node = node->add_child ("InputTransferFunction");
163 if (dynamic_pointer_cast<const dcp::GammaTransferFunction> (_in)) {
164 auto tf = dynamic_pointer_cast<const dcp::GammaTransferFunction> (_in);
165 in_node->add_child("Type")->add_child_text ("Gamma");
166 in_node->add_child("Gamma")->add_child_text (raw_convert<string> (tf->gamma ()));
167 } else if (dynamic_pointer_cast<const dcp::ModifiedGammaTransferFunction> (_in)) {
168 auto tf = dynamic_pointer_cast<const dcp::ModifiedGammaTransferFunction> (_in);
169 in_node->add_child("Type")->add_child_text ("ModifiedGamma");
170 in_node->add_child("Power")->add_child_text (raw_convert<string> (tf->power ()));
171 in_node->add_child("Threshold")->add_child_text (raw_convert<string> (tf->threshold ()));
172 in_node->add_child("A")->add_child_text (raw_convert<string> (tf->A ()));
173 in_node->add_child("B")->add_child_text (raw_convert<string> (tf->B ()));
174 } else if (dynamic_pointer_cast<const dcp::SGamut3TransferFunction> (_in)) {
175 in_node->add_child("Type")->add_child_text ("SGamut3");
178 node->add_child("YUVToRGB")->add_child_text (raw_convert<string> (static_cast<int> (_yuv_to_rgb)));
179 node->add_child("RedX")->add_child_text (raw_convert<string> (_red.x));
180 node->add_child("RedY")->add_child_text (raw_convert<string> (_red.y));
181 node->add_child("GreenX")->add_child_text (raw_convert<string> (_green.x));
182 node->add_child("GreenY")->add_child_text (raw_convert<string> (_green.y));
183 node->add_child("BlueX")->add_child_text (raw_convert<string> (_blue.x));
184 node->add_child("BlueY")->add_child_text (raw_convert<string> (_blue.y));
185 node->add_child("WhiteX")->add_child_text (raw_convert<string> (_white.x));
186 node->add_child("WhiteY")->add_child_text (raw_convert<string> (_white.y));
187 if (_adjusted_white) {
188 node->add_child("AdjustedWhiteX")->add_child_text (raw_convert<string> (_adjusted_white.get().x));
189 node->add_child("AdjustedWhiteY")->add_child_text (raw_convert<string> (_adjusted_white.get().y));
192 if (dynamic_pointer_cast<const dcp::GammaTransferFunction> (_out)) {
193 shared_ptr<const dcp::GammaTransferFunction> gf = dynamic_pointer_cast<const dcp::GammaTransferFunction> (_out);
194 node->add_child("OutputGamma")->add_child_text (raw_convert<string> (gf->gamma ()));
199 ColourConversion::preset () const
201 auto presets = PresetColourConversion::all ();
203 while (i < presets.size() && presets[i].conversion != *this) {
207 if (i >= presets.size ()) {
215 ColourConversion::identifier () const
219 if (dynamic_pointer_cast<const dcp::GammaTransferFunction> (_in)) {
220 shared_ptr<const dcp::GammaTransferFunction> tf = dynamic_pointer_cast<const dcp::GammaTransferFunction> (_in);
221 digester.add (tf->gamma ());
222 } else if (dynamic_pointer_cast<const dcp::ModifiedGammaTransferFunction> (_in)) {
223 shared_ptr<const dcp::ModifiedGammaTransferFunction> tf = dynamic_pointer_cast<const dcp::ModifiedGammaTransferFunction> (_in);
224 digester.add (tf->power ());
225 digester.add (tf->threshold ());
226 digester.add (tf->A ());
227 digester.add (tf->B ());
230 digester.add (_red.x);
231 digester.add (_red.y);
232 digester.add (_green.x);
233 digester.add (_green.y);
234 digester.add (_blue.x);
235 digester.add (_blue.y);
236 digester.add (_white.x);
237 digester.add (_white.y);
239 if (_adjusted_white) {
240 digester.add (_adjusted_white.get().x);
241 digester.add (_adjusted_white.get().y);
244 auto gf = dynamic_pointer_cast<const dcp::GammaTransferFunction> (_out);
246 digester.add (gf->gamma ());
249 return digester.get ();
252 PresetColourConversion::PresetColourConversion ()
253 : name (_("Untitled"))
258 PresetColourConversion::PresetColourConversion (string n, string i, dcp::ColourConversion conversion_)
259 : conversion (conversion_)
266 PresetColourConversion::PresetColourConversion (cxml::NodePtr node, int version)
267 : conversion (node, version)
268 , name (node->string_child ("Name"))
274 operator== (ColourConversion const & a, ColourConversion const & b)
276 return a.about_equal (b, 1e-6);
280 operator!= (ColourConversion const & a, ColourConversion const & b)
286 operator== (PresetColourConversion const & a, PresetColourConversion const & b)
288 return a.name == b.name && a.conversion == b.conversion;
292 PresetColourConversion::setup_colour_conversion_presets ()
294 _presets.push_back (PresetColourConversion (_("sRGB"), "srgb", dcp::ColourConversion::srgb_to_xyz ()));
295 _presets.push_back (PresetColourConversion (_("Rec. 601"), "rec601", dcp::ColourConversion::rec601_to_xyz ()));
296 _presets.push_back (PresetColourConversion (_("Rec. 709"), "rec709", dcp::ColourConversion::rec709_to_xyz ()));
297 _presets.push_back (PresetColourConversion (_("P3"), "p3", dcp::ColourConversion::p3_to_xyz ()));
298 _presets.push_back (PresetColourConversion (_("Rec. 1886"), "rec1886", dcp::ColourConversion::rec1886_to_xyz ()));
299 _presets.push_back (PresetColourConversion (_("Rec. 2020"), "rec2020", dcp::ColourConversion::rec2020_to_xyz ()));
300 _presets.push_back (PresetColourConversion (_("S-Gamut3/S-Log3"), "sgamut3", dcp::ColourConversion::s_gamut3_to_xyz ()));
303 PresetColourConversion
304 PresetColourConversion::from_id (string s)
306 for (auto const& i: _presets) {
312 DCPOMATIC_ASSERT (false);
316 shared_ptr<dcp::OpenJPEGImage>
317 convert_to_xyz (shared_ptr<const PlayerVideo> frame, dcp::NoteHandler note)
319 shared_ptr<dcp::OpenJPEGImage> xyz;
321 auto image = frame->image (bind(&PlayerVideo::keep_xyz_or_rgb, _1), VideoRange::FULL, false);
322 if (frame->colour_conversion()) {
323 xyz = dcp::rgb_to_xyz (
327 frame->colour_conversion().get(),
331 xyz = make_shared<dcp::OpenJPEGImage>(image->data()[0], image->size(), image->stride()[0]);