2 Copyright (C) 2016-2021 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.
35 #include "atmos_asset.h"
36 #include "atmos_asset_reader.h"
37 #include "atmos_asset_writer.h"
38 #include "atmos_frame.h"
39 #include "crypto_context.h"
40 #include "decrypted_kdm.h"
41 #include "encrypted_kdm.h"
42 #include "exceptions.h"
44 #include "mono_picture_asset.h"
45 #include "mono_picture_asset_writer.h"
47 #include <asdcp/AS_DCP.h>
55 using std::shared_ptr;
57 using boost::optional;
63 cerr << "Re-write a MXF (decrypting it if required)\n"
64 << "Syntax: " << n << " [OPTION] <MXF>]\n"
65 << " --version show libdcp version\n"
66 << " -v, --verbose be verbose\n"
67 << " -h, --help show this help\n"
68 << " -o, --output output filename\n"
69 << " -k, --kdm KDM file\n"
70 << " -p, --private-key private key file\n"
71 << " -t, --type MXF type: picture or atmos\n";
74 template <class T, class U>
75 void copy (T const& in, shared_ptr<U> writer)
77 auto reader = in.start_read();
78 for (int64_t i = 0; i < in.intrinsic_duration(); ++i) {
79 auto frame = reader->get_frame (i);
80 writer->write (frame->data(), frame->size());
86 main (int argc, char* argv[])
91 optional<boost::filesystem::path> output_file;
92 optional<boost::filesystem::path> kdm_file;
93 optional<boost::filesystem::path> private_key_file;
102 int option_index = 0;
104 struct option long_options[] = {
105 { "version", no_argument, 0, 'A' },
106 { "verbose", no_argument, 0, 'v' },
107 { "help", no_argument, 0, 'h' },
108 { "output", required_argument, 0, 'o'},
109 { "kdm", required_argument, 0, 'k'},
110 { "private-key", required_argument, 0, 'p'},
111 { "type", required_argument, 0, 't' },
115 int c = getopt_long (argc, argv, "Avho:k:p:t:", long_options, &option_index);
123 cout << "libdcp version " << LIBDCP_VERSION << "\n";
132 output_file = optarg;
138 private_key_file = optarg;
141 if (strcmp(optarg, "picture") == 0) {
142 type = Type::PICTURE;
143 } else if (strcmp(optarg, "atmos") == 0) {
146 cerr << "Unknown MXF type " << optarg << "\n";
153 if (optind >= argc) {
158 boost::filesystem::path input_file = argv[optind];
161 cerr << "You must specify -o or --output\n";
166 cerr << "You must specify -k or --kdm\n";
170 if (!private_key_file) {
171 cerr << "You must specify -p or --private-key\n";
176 cerr << "You must specify -t or --type\n";
180 dcp::EncryptedKDM encrypted_kdm (dcp::file_to_string (kdm_file.get ()));
181 dcp::DecryptedKDM decrypted_kdm (encrypted_kdm, dcp::file_to_string (private_key_file.get()));
183 auto add_key = [verbose](dcp::MXF& mxf, dcp::DecryptedKDM const& kdm) {
184 auto key_id = mxf.key_id();
187 cout << "Asset is encrypted.\n";
189 auto keys = kdm.keys();
190 auto key = std::find_if (keys.begin(), keys.end(), [key_id](dcp::DecryptedKDMKey const& k) { return k.id() == *key_id; });
191 if (key == keys.end()) {
192 cout << "No key found in KDM.\n";
196 cout << "Key found in KDM.\n";
198 mxf.set_key (key->key());
206 dcp::AtmosAsset in (input_file);
207 add_key (in, decrypted_kdm);
208 dcp::AtmosAsset out (
211 in.max_channel_count(),
212 in.max_object_count(),
215 auto writer = out.start_write (output_file.get());
221 dcp::MonoPictureAsset in (input_file);
222 add_key (in, decrypted_kdm);
223 dcp::MonoPictureAsset out (in.edit_rate(), dcp::Standard::SMPTE);
224 auto writer = out.start_write (output_file.get(), false);
229 } catch (dcp::ReadError& e) {
230 cerr << "Read error: " << e.what() << "\n";