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());
87 main (int argc, char* argv[])
92 optional<boost::filesystem::path> output_file;
93 optional<boost::filesystem::path> kdm_file;
94 optional<boost::filesystem::path> private_key_file;
103 int option_index = 0;
105 struct option long_options[] = {
106 { "version", no_argument, 0, 'A' },
107 { "verbose", no_argument, 0, 'v' },
108 { "help", no_argument, 0, 'h' },
109 { "output", required_argument, 0, 'o'},
110 { "kdm", required_argument, 0, 'k'},
111 { "private-key", required_argument, 0, 'p'},
112 { "type", required_argument, 0, 't' },
116 int c = getopt_long (argc, argv, "Avho:k:p:t:", long_options, &option_index);
124 cout << "libdcp version " << LIBDCP_VERSION << "\n";
133 output_file = optarg;
139 private_key_file = optarg;
142 if (strcmp(optarg, "picture") == 0) {
143 type = Type::PICTURE;
144 } else if (strcmp(optarg, "atmos") == 0) {
147 cerr << "Unknown MXF type " << optarg << "\n";
154 if (optind >= argc) {
159 boost::filesystem::path input_file = argv[optind];
162 cerr << "You must specify -o or --output\n";
167 cerr << "You must specify -k or --kdm\n";
171 if (!private_key_file) {
172 cerr << "You must specify -p or --private-key\n";
177 cerr << "You must specify -t or --type\n";
181 dcp::EncryptedKDM encrypted_kdm (dcp::file_to_string (kdm_file.get ()));
182 dcp::DecryptedKDM decrypted_kdm (encrypted_kdm, dcp::file_to_string (private_key_file.get()));
184 auto add_key = [verbose](dcp::MXF& mxf, dcp::DecryptedKDM const& kdm) {
185 auto key_id = mxf.key_id();
188 cout << "Asset is encrypted.\n";
190 auto keys = kdm.keys();
191 auto key = std::find_if (keys.begin(), keys.end(), [key_id](dcp::DecryptedKDMKey const& k) { return k.id() == *key_id; });
192 if (key == keys.end()) {
193 cout << "No key found in KDM.\n";
197 cout << "Key found in KDM.\n";
199 mxf.set_key (key->key());
207 dcp::AtmosAsset in (input_file);
208 add_key (in, decrypted_kdm);
209 dcp::AtmosAsset out (
212 in.max_channel_count(),
213 in.max_object_count(),
216 auto writer = out.start_write (output_file.get());
222 dcp::MonoPictureAsset in (input_file);
223 add_key (in, decrypted_kdm);
224 dcp::MonoPictureAsset out (in.edit_rate(), dcp::Standard::SMPTE);
225 auto writer = out.start_write (output_file.get(), false);
230 } catch (dcp::ReadError& e) {
231 cerr << "Read error: " << e.what() << "\n";