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/*
Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
This program 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,
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.
*/
/** @file src/format.cc
* @brief Class to describe a format (aspect ratio) that a Film should
* be shown in.
*/
#include <sstream>
#include <cstdlib>
#include <cassert>
#include <iomanip>
#include <iostream>
#include "format.h"
#include "film.h"
#include "i18n.h"
using std::string;
using std::setprecision;
using std::stringstream;
using std::vector;
using boost::shared_ptr;
using libdcp::Size;
vector<Format const *> Format::_formats;
/** @return A name to be presented to the user */
string
FixedFormat::name () const
{
stringstream s;
if (!_nickname.empty ()) {
s << _nickname << N_(" (");
}
s << setprecision(3) << (_ratio / 100.0) << N_(":1");
if (!_nickname.empty ()) {
s << N_(")");
}
return s.str ();
}
/** @return Identifier for this format as metadata for a Film's metadata file */
string
Format::as_metadata () const
{
return _id;
}
/** Fill our _formats vector with all available formats */
void
Format::setup_formats ()
{
/// TRANSLATORS: these are film picture aspect ratios; "Academy" means 1.37, "Flat" 1.85 and "Scope" 2.39.
_formats.push_back (
new FixedFormat (119, libdcp::Size (1285, 1080), N_("119"), _("1.19"), N_("F"),
_("Source scaled to 1.19:1")
));
_formats.push_back (
new FixedFormat (133, libdcp::Size (1436, 1080), N_("133"), _("1.33"), N_("F"),
_("Source scaled to 1.33:1")
));
_formats.push_back (
new FixedFormat (138, libdcp::Size (1485, 1080), N_("138"), _("1.375"), N_("F"),
_("Source scaled to 1.375:1")
));
_formats.push_back (
new FixedFormat (133, libdcp::Size (1998, 1080), N_("133-in-flat"), _("4:3 within Flat"), N_("F"),
_("Source scaled to 1.33:1 then pillarboxed to Flat")
));
_formats.push_back (
new FixedFormat (137, libdcp::Size (1480, 1080), N_("137"), _("Academy"), N_("F"),
_("Source scaled to 1.37:1 (Academy ratio)")
));
_formats.push_back (
new FixedFormat (166, libdcp::Size (1793, 1080), N_("166"), _("1.66"), N_("F"),
_("Source scaled to 1.66:1")
));
_formats.push_back (
new FixedFormat (166, libdcp::Size (1998, 1080), N_("166-in-flat"), _("1.66 within Flat"), N_("F"),
_("Source scaled to 1.66:1 then pillarboxed to Flat")
));
_formats.push_back (
new FixedFormat (178, libdcp::Size (1998, 1080), N_("178-in-flat"), _("16:9 within Flat"), N_("F"),
_("Source scaled to 1.78:1 then pillarboxed to Flat")
));
_formats.push_back (
new FixedFormat (178, libdcp::Size (1920, 1080), N_("178"), _("16:9"), N_("F"),
_("Source scaled to 1.78:1")
));
_formats.push_back (
new FixedFormat (185, libdcp::Size (1998, 1080), N_("185"), _("Flat"), N_("F"),
_("Source scaled to Flat (1.85:1)")
));
_formats.push_back (
new FixedFormat (239, libdcp::Size (2048, 858), N_("239"), _("Scope"), N_("S"),
_("Source scaled to Scope (2.39:1)")
));
_formats.push_back (
new VariableFormat (libdcp::Size (1998, 1080), N_("var-185"), _("Flat without stretch"), N_("F"),
_("Source scaled to fit Flat preserving its aspect ratio")
));
_formats.push_back (
new VariableFormat (libdcp::Size (2048, 858), N_("var-239"), _("Scope without stretch"), N_("S"),
_("Source scaled to fit Scope preserving its aspect ratio")
));
}
/** @param n Nickname.
* @return Matching Format, or 0.
*/
Format const *
Format::from_nickname (string n)
{
vector<Format const *>::iterator i = _formats.begin ();
while (i != _formats.end() && (*i)->nickname() != n) {
++i;
}
if (i == _formats.end ()) {
return 0;
}
return *i;
}
/** @param i Id.
* @return Matching Format, or 0.
*/
Format const *
Format::from_id (string i)
{
vector<Format const *>::iterator j = _formats.begin ();
while (j != _formats.end() && (*j)->id() != i) {
++j;
}
if (j == _formats.end ()) {
return 0;
}
return *j;
}
/** @param m Metadata, as returned from as_metadata().
* @return Matching Format, or 0.
*/
Format const *
Format::from_metadata (string m)
{
return from_id (m);
}
/** @return All available formats */
vector<Format const *>
Format::all ()
{
return _formats;
}
/** @param r Ratio multiplied by 100 (e.g. 185)
* @param dcp Size (in pixels) of the images that we should put in a DCP.
* @param id ID (e.g. 185)
* @param n Nick name (e.g. Flat)
*/
FixedFormat::FixedFormat (int r, libdcp::Size dcp, string id, string n, string d, string e)
: Format (dcp, id, n, d, e)
, _ratio (r)
{
}
/** @return Number of pixels (int the DCP image) to pad either side of the film
* (so there are dcp_padding() pixels on the left and dcp_padding() on the right)
*/
int
Format::dcp_padding (shared_ptr<const Film> f) const
{
int p = rint ((_dcp_size.width - (_dcp_size.height * ratio_as_integer(f) / 100.0)) / 2.0);
/* This comes out -ve for Scope; bodge it */
if (p < 0) {
p = 0;
}
return p;
}
float
Format::container_ratio_as_float () const
{
return static_cast<float> (_dcp_size.width) / _dcp_size.height;
}
VariableFormat::VariableFormat (libdcp::Size dcp, string id, string n, string d, string e)
: Format (dcp, id, n, d, e)
{
}
int
VariableFormat::ratio_as_integer (shared_ptr<const Film> f) const
{
return rint (ratio_as_float (f) * 100);
}
float
VariableFormat::ratio_as_float (shared_ptr<const Film> f) const
{
return float (f->size().width) / f->size().height;
}
/** @return A name to be presented to the user */
string
VariableFormat::name () const
{
return _nickname;
}
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