/*
- Copyright (C) 2014 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2014-2021 Carl Hetherington <cth@carlh.net>
- This program is free software; you can redistribute it and/or modify
+ This file is part of libdcp.
+
+ libdcp 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,
+ libdcp 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.
-
+ along with libdcp. If not, see <http://www.gnu.org/licenses/>.
+
+ In addition, as a special exception, the copyright holders give
+ permission to link the code of portions of this program with the
+ OpenSSL library under certain conditions as described in each
+ individual source file, and distribute linked combinations
+ including the two.
+
+ You must obey the GNU General Public License in all respects
+ for all of the code used other than OpenSSL. If you modify
+ file(s) with this exception, you may extend this exception to your
+ version of the file(s), but you are not obligated to do so. If you
+ do not wish to do so, delete this exception statement from your
+ version. If you delete this exception statement from all source
+ files in the program, then also delete it here.
*/
-#include <boost/shared_ptr.hpp>
+
+/** @file src/colour_conversion.h
+ * @brief ColourConversion class.
+ */
+
+
+#ifndef DCP_COLOUR_CONVERSION_H
+#define DCP_COLOUR_CONVERSION_H
+
+
+#include "chromaticity.h"
+#include <memory>
+#if BOOST_VERSION >= 106400
+#include <boost/serialization/array_wrapper.hpp>
+#endif
#include <boost/numeric/ublas/matrix.hpp>
+#include <boost/optional.hpp>
+
namespace dcp {
+
class TransferFunction;
+
+enum class YUVToRGB {
+ REC601,
+ REC709,
+ COUNT
+};
+
+
+/** @class ColourConversion
+ * @brief A representation of all the parameters involved the colourspace conversion
+ * of a YUV image to XYZ (via RGB)
+ */
class ColourConversion
{
public:
ColourConversion ()
- : _matrix (3, 3)
+ : _yuv_to_rgb (YUVToRGB::REC601)
{}
-
+
ColourConversion (
- boost::shared_ptr<const TransferFunction> in,
- double const matrix[3][3],
- boost::shared_ptr<const TransferFunction> out
+ std::shared_ptr<const TransferFunction> in,
+ YUVToRGB yuv_to_rgb,
+ Chromaticity red,
+ Chromaticity green,
+ Chromaticity blue,
+ Chromaticity white,
+ boost::optional<Chromaticity> adjusted_white,
+ std::shared_ptr<const TransferFunction> out
);
- boost::shared_ptr<const TransferFunction> in () const {
+ std::shared_ptr<const TransferFunction> in () const {
return _in;
}
- boost::numeric::ublas::matrix<double> matrix () const {
- return _matrix;
+ YUVToRGB yuv_to_rgb () const {
+ return _yuv_to_rgb;
+ }
+
+ Chromaticity red () const {
+ return _red;
+ }
+
+ Chromaticity green () const {
+ return _green;
+ }
+
+ Chromaticity blue () const {
+ return _blue;
}
- boost::shared_ptr<const TransferFunction> out () const {
+ Chromaticity white () const {
+ return _white;
+ }
+
+ boost::optional<Chromaticity> adjusted_white () const {
+ return _adjusted_white;
+ }
+
+ std::shared_ptr<const TransferFunction> out () const {
return _out;
}
- void set_in (boost::shared_ptr<const TransferFunction> f) {
+ void set_in (std::shared_ptr<const TransferFunction> f) {
_in = f;
}
- void set_matrix (boost::numeric::ublas::matrix<double> m) {
- _matrix = m;
+ void set_yuv_to_rgb (YUVToRGB y) {
+ _yuv_to_rgb = y;
+ }
+
+ void set_red (Chromaticity red) {
+ _red = red;
+ }
+
+ void set_green (Chromaticity green) {
+ _green = green;
+ }
+
+ void set_blue (Chromaticity blue) {
+ _blue = blue;
}
- void set_out (boost::shared_ptr<const TransferFunction> f) {
+ void set_white (Chromaticity white) {
+ _white = white;
+ }
+
+ void set_adjusted_white (Chromaticity adjusted_white) {
+ _adjusted_white = adjusted_white;
+ }
+
+ void unset_adjusted_white () {
+ _adjusted_white = boost::optional<Chromaticity> ();
+ }
+
+ void set_out (std::shared_ptr<const TransferFunction> f) {
_out = f;
}
bool about_equal (ColourConversion const & other, float epsilon) const;
- static ColourConversion srgb_to_xyz;
- static ColourConversion xyz_to_srgb;
- static ColourConversion rec709_to_xyz;
+ boost::numeric::ublas::matrix<double> rgb_to_xyz () const;
+ boost::numeric::ublas::matrix<double> xyz_to_rgb () const;
+ boost::numeric::ublas::matrix<double> bradford () const;
+
+ static ColourConversion const & srgb_to_xyz ();
+ static ColourConversion const & rec601_to_xyz ();
+ static ColourConversion const & rec709_to_xyz ();
+ static ColourConversion const & p3_to_xyz ();
+ static ColourConversion const & rec1886_to_xyz ();
+ static ColourConversion const & rec2020_to_xyz ();
+ static ColourConversion const & s_gamut3_to_xyz ();
protected:
- boost::shared_ptr<const TransferFunction> _in;
- boost::numeric::ublas::matrix<double> _matrix;
- boost::shared_ptr<const TransferFunction> _out;
+ /** Input transfer function (probably a gamma function, or something similar) */
+ std::shared_ptr<const TransferFunction> _in;
+ /** Conversion to use from YUV to RGB */
+ YUVToRGB _yuv_to_rgb;
+ Chromaticity _red;
+ Chromaticity _green;
+ Chromaticity _blue;
+ Chromaticity _white;
+ /** White point that we are adjusting to using a Bradford matrix */
+ boost::optional<Chromaticity> _adjusted_white;
+ /** Output transfer function (probably an inverse gamma function, or something similar) */
+ std::shared_ptr<const TransferFunction> _out;
};
+
}
+
+
+#endif
projects / libdcp.git / blobdiff