2 Copyright (C) 2020 Carl Hetherington <cth@carlh.net>
4 This file is part of libdcp.
6 libdcp 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 libdcp 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 libdcp. If not, see <http://www.gnu.org/licenses/>.
19 In addition, as a special exception, the copyright holders give
20 permission to link the code of portions of this program with the
21 OpenSSL library under certain conditions as described in each
22 individual source file, and distribute linked combinations
25 You must obey the GNU General Public License in all respects
26 for all of the code used other than OpenSSL. If you modify
27 file(s) with this exception, you may extend this exception to your
28 version of the file(s), but you are not obligated to do so. If you
29 do not wish to do so, delete this exception statement from your
30 version. If you delete this exception statement from all source
31 files in the program, then also delete it here.
39 #include "dcp_assert.h"
40 #include "exceptions.h"
41 #include "font_asset.h"
42 #include "interop_subtitle_asset.h"
43 #include "raw_convert.h"
44 #include <boost/filesystem.hpp>
45 #include <boost/foreach.hpp>
56 using boost::dynamic_pointer_cast;
57 using boost::optional;
58 using boost::shared_ptr;
61 boost::filesystem::path
62 make_unique (boost::filesystem::path path)
64 if (!boost::filesystem::exists(path)) {
68 for (int i = 0; i < 10000; ++i) {
69 boost::filesystem::path p = path.parent_path() / (path.stem().string() + dcp::raw_convert<string>(i) + path.extension().string());
70 if (!boost::filesystem::exists(p)) {
82 create_hard_link_or_copy (boost::filesystem::path from, boost::filesystem::path to)
85 create_hard_link (from, to);
86 } catch (boost::filesystem::filesystem_error& e) {
87 if (e.code() == boost::system::errc::cross_device_link) {
97 dcp::combine (vector<boost::filesystem::path> inputs, boost::filesystem::path output, shared_ptr<const CertificateChain> signer)
99 using namespace boost::filesystem;
101 DCP_ASSERT (!inputs.empty());
103 DCP output_dcp (output);
104 optional<dcp::Standard> standard;
106 BOOST_FOREACH (path i, inputs) {
110 standard = *dcp.standard();
111 } else if (standard != dcp.standard()) {
112 throw CombineError ("Cannot combine Interop and SMPTE DCPs.");
117 list<shared_ptr<dcp::Asset> > assets;
119 BOOST_FOREACH (path i, inputs) {
123 BOOST_FOREACH (shared_ptr<dcp::CPL> j, dcp.cpls()) {
127 BOOST_FOREACH (shared_ptr<dcp::Asset> j, dcp.assets(true)) {
128 if (dynamic_pointer_cast<dcp::CPL>(j)) {
132 optional<path> file = j->file();
134 path new_path = make_unique(output / file->filename());
136 shared_ptr<dcp::InteropSubtitleAsset> sub = dynamic_pointer_cast<dcp::InteropSubtitleAsset>(j);
138 /* Interop fonts are really fiddly. The font files are assets (in the ASSETMAP)
139 * and also linked from the font XML by filename. We have to fix both these things,
140 * and re-write the font XML file since the font URI might have changed if it's a duplicate
143 map<string, path> fonts = sub->font_filenames ();
144 for (map<string, path>::const_iterator k = fonts.begin(); k != fonts.end(); ++k) {
145 sub->set_font_file (k->first, make_unique(output / k->second.filename()));
147 sub->write (new_path);
148 } else if (!dynamic_pointer_cast<dcp::FontAsset>(j)) {
149 /* Take care of everything else that's not a Interop subtitle asset, Interop font file
152 optional<path> file = j->file();
154 path new_path = make_unique(output / file->filename());
155 create_hard_link_or_copy (*file, new_path);
156 j->set_file (new_path);
159 assets.push_back (j);
163 output_dcp.resolve_refs (assets);
164 output_dcp.write_xml (*standard, dcp::XMLMetadata(), signer);