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/>.
25 #include <dcp/types.h>
33 using boost::optional;
36 vector<Ratio> Ratio::_ratios;
40 Ratio::setup_ratios ()
42 /* This must only be called once as we rely on the addresses of objects in _ratios staying the same */
43 DCPOMATIC_ASSERT (_ratios.empty());
45 _ratios.push_back (Ratio(float(1290) / 1080, "119", _("1.19"), {}, "119"));
46 _ratios.push_back (Ratio(float(1440) / 1080, "133", _("1.33 (4:3)"), {}, "133"));
47 _ratios.push_back (Ratio(float(1485) / 1080, "138", _("1.38 (Academy)"), {}, "137"));
48 _ratios.push_back (Ratio(float(1544) / 1080, "143", _("1.43 (IMAX)"), {}, "143"));
49 _ratios.push_back (Ratio(float(1800) / 1080, "166", _("1.66"), {}, "166"));
50 _ratios.push_back (Ratio(float(1920) / 1080, "178", _("1.78 (16:9 or HD)"), {}, "178"));
51 _ratios.push_back (Ratio(float(1998) / 1080, "185", _("1.85 (Flat)"), string(_("DCI Flat")), "F"));
52 _ratios.push_back (Ratio(float(2048) / 872, "235", _("2.35 (35mm Scope)"), {}, "S"));
53 _ratios.push_back (Ratio(float(2048) / 858, "239", _("2.39 (Scope)"), string(_("DCI Scope")), "S"));
54 _ratios.push_back (Ratio(float(2048) / 1080, "190", _("1.90 (Full frame)"), string(_("Full frame")), "C"));
61 vector<Ratio const *> pointers;
62 for (Ratio& ratio: _ratios) {
63 pointers.push_back (&ratio);
70 Ratio::from_id (string i)
72 /* We removed the ratio with id 137; replace it with 138 */
77 auto j = _ratios.begin ();
78 while (j != _ratios.end() && j->id() != i) {
82 if (j == _ratios.end()) {
90 /** @return Ratio corresponding to a given fractional ratio (+/- 0.01), or 0 */
92 Ratio::from_ratio (float r)
94 auto j = _ratios.begin ();
95 while (j != _ratios.end() && fabs(j->ratio() - r) > 0.01) {
99 if (j == _ratios.end ()) {
108 Ratio::nearest_from_ratio (float r)
110 vector<Ratio>::const_iterator nearest = _ratios.end();
111 float distance = FLT_MAX;
113 for (auto i = _ratios.begin(); i != _ratios.end(); ++i) {
114 float const d = fabs(i->ratio() - r);
121 DCPOMATIC_ASSERT (nearest != _ratios.end());
126 vector<Ratio const *>
129 if (Config::instance()->allow_any_container()) {
133 vector<Ratio const *> r;
134 r.push_back (Ratio::from_id ("185"));
135 r.push_back (Ratio::from_id ("239"));
141 Ratio::container_nickname () const
143 if (!_container_nickname) {
144 /* Fall back to the image nickname; this just for when non-standard container
147 return _image_nickname;
150 return *_container_nickname;