2 Copyright (C) 2016 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.
34 #include "encrypted_kdm.h"
35 #include "decrypted_kdm.h"
36 #include "decryption_context.h"
39 #include "atmos_asset.h"
40 #include "atmos_frame.h"
41 #include "atmos_asset_reader.h"
42 #include "atmos_asset_writer.h"
43 #include "exceptions.h"
44 #include <asdcp/AS_DCP.h>
45 #include <boost/foreach.hpp>
52 using boost::optional;
53 using boost::shared_ptr;
58 cerr << "Syntax: " << n << " [OPTION] <MXF>]\n"
59 << " -v, --version show DCP-o-matic version\n"
60 << " -h, --help show this help\n"
61 << " -o, --output output filename\n"
62 << " -k, --kdm KDM file\n"
63 << " -p, --private-key private key file\n";
68 ASDCP::ATMOS::MXFReader& reader,
69 boost::filesystem::path output_file,
73 ASDCP::WriterInfo info;
74 if (ASDCP_FAILURE (reader.FillWriterInfo (info))) {
75 cerr << "Could not read ATMOS MXF information\n";
79 if (!info.EncryptedEssence) {
80 cerr << "MXF is not encrypted!\n";
85 Kumu::bin2UUIDhex (info.CryptographicKeyID, ASDCP::UUIDlen, key_buffer, sizeof (key_buffer));
86 string const key_id = key_buffer;
88 optional<dcp::Key> key;
89 BOOST_FOREACH (dcp::DecryptedKDMKey const & i, kdm.keys()) {
90 if (i.id() == key_id) {
96 cerr << "Could not find key in KDM.\n";
100 dcp::DecryptionContext dc (key.get());
102 ASDCP::ATMOS::AtmosDescriptor desc;
103 if (ASDCP_FAILURE (reader.FillAtmosDescriptor (desc))) {
104 cerr << "could not read ATMOS descriptor.\n";
108 ASDCP::DCData::FrameBuffer buffer (Kumu::Megabyte);
110 for (size_t i = 0; i < desc.ContainerDuration; ++i) {
111 reader.ReadFrame (i, buffer, dc.decryption(), 0);
118 main (int argc, char* argv[])
120 optional<boost::filesystem::path> output_file;
121 optional<boost::filesystem::path> kdm_file;
122 optional<boost::filesystem::path> private_key_file;
124 int option_index = 0;
126 struct option long_options[] = {
127 { "version", no_argument, 0, 'v' },
128 { "help", no_argument, 0, 'h' },
129 { "output", required_argument, 0, 'o'},
130 { "kdm", required_argument, 0, 'k'},
131 { "private-key", required_argument, 0, 'p'},
135 int c = getopt_long (argc, argv, "vho:k:p:", long_options, &option_index);
143 cout << "libdcp version " << LIBDCP_VERSION << "\n";
149 output_file = optarg;
155 private_key_file = optarg;
160 if (optind >= argc) {
165 boost::filesystem::path input_file = argv[optind];
168 cerr << "You must specify -o or --output\n";
173 cerr << "You must specify -k or --kdm\n";
177 if (!private_key_file) {
178 cerr << "You must specify -p or --private-key\n";
182 dcp::EncryptedKDM encrypted_kdm (dcp::file_to_string (kdm_file.get ()));
183 dcp::DecryptedKDM decrypted_kdm (encrypted_kdm, dcp::file_to_string (private_key_file.get()));
186 dcp::AtmosAsset in (input_file);
187 shared_ptr<dcp::AtmosAssetReader> reader = in.start_read ();
188 dcp::AtmosAsset out (
191 in.max_channel_count(),
192 in.max_object_count(),
196 shared_ptr<dcp::AtmosAssetWriter> writer = out.start_write (output_file.get());
197 for (int64_t i = 0; i < in.intrinsic_duration(); ++i) {
198 shared_ptr<const dcp::AtmosFrame> f = reader->get_frame (i);
199 writer->write (f->data(), f->size());
201 } catch (dcp::DCPReadError& e) {
202 cerr << "Unknown MXF format.\n";