2 Copyright (C) 2014-2021 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/>.
22 #include "dcp_subtitle_decoder.h"
23 #include "dcp_subtitle_content.h"
24 #include <dcp/interop_subtitle_asset.h>
25 #include <dcp/load_font_node.h>
34 using std::shared_ptr;
35 using std::dynamic_pointer_cast;
36 using std::make_shared;
38 using namespace dcpomatic;
41 DCPSubtitleDecoder::DCPSubtitleDecoder (shared_ptr<const Film> film, shared_ptr<const DCPSubtitleContent> content)
44 auto c = load (content->path(0));
45 c->fix_empty_font_ids ();
46 _subtitles = c->subtitles ();
47 _next = _subtitles.begin ();
50 if (_next != _subtitles.end()) {
51 first = content_time_period(*_next).from;
53 text.push_back (make_shared<TextDecoder>(this, content->only_text(), first));
55 auto fm = c->font_data();
56 for (auto const& i: fm) {
57 _fonts.push_back (FontData(i.first, i.second));
60 /* Add a default font for any LoadFont nodes in our file which we haven't yet found fonts for */
61 for (auto i: c->load_font_nodes()) {
62 if (fm.find(i->id) == fm.end()) {
63 _fonts.push_back (FontData(i->id, dcp::ArrayData(default_font_file())));
70 DCPSubtitleDecoder::seek (ContentTime time, bool accurate)
72 Decoder::seek (time, accurate);
74 _next = _subtitles.begin ();
75 auto i = _subtitles.begin ();
76 while (i != _subtitles.end() && ContentTime::from_seconds ((*_next)->in().as_seconds()) < time) {
83 DCPSubtitleDecoder::pass ()
85 if (_next == _subtitles.end ()) {
89 /* Gather all subtitles with the same time period that are next
90 on the list. We must emit all subtitles for the same time
91 period with the same emit*() call otherwise the
92 TextDecoder will assume there is nothing else at the
93 time of emitting the first.
96 list<dcp::SubtitleString> s;
97 list<dcp::SubtitleImage> i;
98 auto const p = content_time_period (*_next);
100 while (_next != _subtitles.end () && content_time_period (*_next) == p) {
101 auto ns = dynamic_pointer_cast<const dcp::SubtitleString>(*_next);
106 /* XXX: perhaps these image subs should also be collected together like the string ones are;
107 this would need to be done both here and in DCPDecoder.
110 auto ni = dynamic_pointer_cast<const dcp::SubtitleImage>(*_next);
112 emit_subtitle_image (p, *ni, film()->frame_size(), only_text());
118 only_text()->emit_plain (p, s);
124 DCPSubtitleDecoder::content_time_period (shared_ptr<const dcp::Subtitle> s) const
127 ContentTime::from_seconds(s->in().as_seconds()),
128 ContentTime::from_seconds(s->out().as_seconds())
133 vector<dcpomatic::FontData>
134 DCPSubtitleDecoder::fonts () const