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 libdcp 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";
66 /* XXX: this method is unused */
69 ASDCP::ATMOS::MXFReader& reader,
70 boost::filesystem::path output_file,
74 ASDCP::WriterInfo info;
75 if (ASDCP_FAILURE (reader.FillWriterInfo (info))) {
76 cerr << "Could not read ATMOS MXF information\n";
80 if (!info.EncryptedEssence) {
81 cerr << "MXF is not encrypted!\n";
86 Kumu::bin2UUIDhex (info.CryptographicKeyID, ASDCP::UUIDlen, key_buffer, sizeof (key_buffer));
87 string const key_id = key_buffer;
89 optional<dcp::Key> key;
90 BOOST_FOREACH (dcp::DecryptedKDMKey const & i, kdm.keys()) {
91 if (i.id() == key_id) {
97 cerr << "Could not find key in KDM.\n";
101 dcp::DecryptionContext dc (key.get());
103 ASDCP::ATMOS::AtmosDescriptor desc;
104 if (ASDCP_FAILURE (reader.FillAtmosDescriptor (desc))) {
105 cerr << "could not read ATMOS descriptor.\n";
109 ASDCP::DCData::FrameBuffer buffer (Kumu::Megabyte);
111 for (size_t i = 0; i < desc.ContainerDuration; ++i) {
112 reader.ReadFrame (i, buffer, dc.decryption(), 0);
119 main (int argc, char* argv[])
121 optional<boost::filesystem::path> output_file;
122 optional<boost::filesystem::path> kdm_file;
123 optional<boost::filesystem::path> private_key_file;
125 int option_index = 0;
127 struct option long_options[] = {
128 { "version", no_argument, 0, 'v' },
129 { "help", no_argument, 0, 'h' },
130 { "output", required_argument, 0, 'o'},
131 { "kdm", required_argument, 0, 'k'},
132 { "private-key", required_argument, 0, 'p'},
136 int c = getopt_long (argc, argv, "vho:k:p:", long_options, &option_index);
144 cout << "libdcp version " << LIBDCP_VERSION << "\n";
150 output_file = optarg;
156 private_key_file = optarg;
161 if (optind >= argc) {
166 boost::filesystem::path input_file = argv[optind];
169 cerr << "You must specify -o or --output\n";
174 cerr << "You must specify -k or --kdm\n";
178 if (!private_key_file) {
179 cerr << "You must specify -p or --private-key\n";
183 dcp::EncryptedKDM encrypted_kdm (dcp::file_to_string (kdm_file.get ()));
184 dcp::DecryptedKDM decrypted_kdm (encrypted_kdm, dcp::file_to_string (private_key_file.get()));
186 /* XXX: only works for Atmos! */
189 dcp::AtmosAsset in (input_file);
190 shared_ptr<dcp::AtmosAssetReader> reader = in.start_read ();
191 dcp::AtmosAsset out (
194 in.max_channel_count(),
195 in.max_object_count(),
199 shared_ptr<dcp::AtmosAssetWriter> writer = out.start_write (output_file.get());
200 for (int64_t i = 0; i < in.intrinsic_duration(); ++i) {
201 shared_ptr<const dcp::AtmosFrame> f = reader->get_frame (i);
202 writer->write (f->data(), f->size());
204 } catch (dcp::DCPReadError& e) {
205 cerr << "Unknown MXF format.\n";