2 Copyright (C) 2013-2014 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #include "video_content_scale.h"
21 #include "video_content.h"
23 #include "safe_stringstream.h"
25 #include <libcxml/cxml.h>
26 #include <libxml++/libxml++.h>
27 #include <boost/optional.hpp>
33 using boost::shared_ptr;
34 using boost::optional;
36 vector<VideoContentScale> VideoContentScale::_scales;
38 VideoContentScale::VideoContentScale (Ratio const * r)
45 VideoContentScale::VideoContentScale ()
52 VideoContentScale::VideoContentScale (bool scale)
59 VideoContentScale::VideoContentScale (shared_ptr<cxml::Node> node)
63 optional<string> r = node->optional_string_child ("Ratio");
65 _ratio = Ratio::from_id (r.get ());
67 _scale = node->bool_child ("Scale");
72 VideoContentScale::as_xml (xmlpp::Node* node) const
75 node->add_child("Ratio")->add_child_text (_ratio->id ());
77 node->add_child("Scale")->add_child_text (_scale ? "1" : "0");
82 VideoContentScale::id () const
89 s << (_scale ? "S1" : "S0");
96 VideoContentScale::name () const
99 return _ratio->nickname ();
103 return _("No stretch");
106 return _("No scale");
110 VideoContentScale::from_id (string id)
112 Ratio const * r = Ratio::from_id (id);
114 return VideoContentScale (r);
118 return VideoContentScale (false);
121 return VideoContentScale (true);
124 /** @param display_container Size of the container that we are displaying this content in.
125 * @param film_container The size of the film's image.
128 VideoContentScale::size (shared_ptr<const VideoContent> c, dcp::Size display_container, dcp::Size film_container, int round) const
131 return fit_ratio_within (_ratio->ratio (), display_container, round);
134 dcp::Size const ac = c->video_size_after_crop ();
136 /* Force scale if the film_container is smaller than the content's image */
137 if (_scale || film_container.width < ac.width || film_container.height < ac.height) {
138 return fit_ratio_within (ac.ratio (), display_container, round);
141 /* Scale the image so that it will be in the right place in film_container, even if display_container is a
145 c->video_size().width * float(display_container.width) / film_container.width,
146 c->video_size().height * float(display_container.height) / film_container.height
151 VideoContentScale::setup_scales ()
153 vector<Ratio const *> ratios = Ratio::all ();
154 for (vector<Ratio const *>::const_iterator i = ratios.begin(); i != ratios.end(); ++i) {
155 _scales.push_back (VideoContentScale (*i));
158 _scales.push_back (VideoContentScale (true));
159 _scales.push_back (VideoContentScale (false));
163 operator== (VideoContentScale const & a, VideoContentScale const & b)
165 return (a.ratio() == b.ratio() && a.scale() == b.scale());
169 operator!= (VideoContentScale const & a, VideoContentScale const & b)
171 return (a.ratio() != b.ratio() || a.scale() != b.scale());