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/*
Copyright (C) 2013-2021 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
DCP-o-matic 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.
DCP-o-matic 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 DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ratio.h"
#include "util.h"
#include "config.h"
#include <dcp/types.h>
#include <cfloat>
#include "i18n.h"
using std::string;
using std::vector;
using boost::optional;
vector<Ratio> Ratio::_ratios;
void
Ratio::setup_ratios ()
{
/* This must only be called once as we rely on the addresses of objects in _ratios staying the same */
DCPOMATIC_ASSERT (_ratios.empty());
_ratios.push_back (Ratio(float(1290) / 1080, "119", _("1.19"), {}, "119"));
_ratios.push_back (Ratio(float(1420) / 1080, "131", _("1.315"), {}, "131"));
_ratios.push_back (Ratio(float(1440) / 1080, "133", _("1.33 (4:3)"), {}, "133"));
_ratios.push_back (Ratio(float(1485) / 1080, "138", _("1.38 (Academy)"), {}, "137"));
_ratios.push_back (Ratio(float(1544) / 1080, "143", _("1.43 (IMAX)"), {}, "143"));
_ratios.push_back (Ratio(float(1800) / 1080, "166", _("1.66"), {}, "166"));
_ratios.push_back (Ratio(float(1920) / 1080, "178", _("1.78 (16:9 or HD)"), {}, "178"));
_ratios.push_back (Ratio(float(1998) / 1080, "185", _("1.85 (Flat)"), string(_("DCI Flat")), "F"));
_ratios.push_back (Ratio(float(2048) / 872, "235", _("2.35 (35mm Scope)"), {}, "S"));
_ratios.push_back (Ratio(float(2048) / 858, "239", _("2.39 (Scope)"), string(_("DCI Scope")), "S"));
_ratios.push_back (Ratio(float(2048) / 1080, "190", _("1.90 (Full frame)"), string(_("Full frame")), "C"));
}
vector<Ratio const *>
Ratio::all ()
{
vector<Ratio const *> pointers;
for (Ratio& ratio: _ratios) {
pointers.push_back (&ratio);
}
return pointers;
}
Ratio const *
Ratio::from_id (string i)
{
/* We removed the ratio with id 137; replace it with 138 */
if (i == "137") {
i = "138";
}
auto j = _ratios.begin ();
while (j != _ratios.end() && j->id() != i) {
++j;
}
if (j == _ratios.end()) {
return nullptr;
}
return &(*j);
}
/** @return Ratio corresponding to a given fractional ratio (+/- 0.01), or 0 */
Ratio const *
Ratio::from_ratio (float r)
{
auto j = _ratios.begin ();
while (j != _ratios.end() && fabs(j->ratio() - r) > 0.01) {
++j;
}
if (j == _ratios.end ()) {
return nullptr;
}
return &(*j);
}
Ratio const *
Ratio::nearest_from_ratio (float r)
{
vector<Ratio>::const_iterator nearest = _ratios.end();
float distance = FLT_MAX;
for (auto i = _ratios.begin(); i != _ratios.end(); ++i) {
float const d = fabs(i->ratio() - r);
if (d < distance) {
distance = d;
nearest = i;
}
}
DCPOMATIC_ASSERT (nearest != _ratios.end());
return &(*nearest);
}
vector<Ratio const *>
Ratio::containers ()
{
if (Config::instance()->allow_any_container()) {
return all();
}
vector<Ratio const *> r;
r.push_back (Ratio::from_id ("185"));
r.push_back (Ratio::from_id ("239"));
return r;
}
string
Ratio::container_nickname () const
{
if (!_container_nickname) {
/* Fall back to the image nickname; this just for when non-standard container
ratios are enabled.
*/
return _image_nickname;
}
return *_container_nickname;
}
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