src/tools/dcpomatic_ecinema.cc

   1 /*
   2     Copyright (C) 2018-2019 Carl Hetherington <cth@carlh.net>
   3
   4     This file is part of DCP-o-matic.
   5
   6     DCP-o-matic 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.
  10
  11     DCP-o-matic 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.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 */
  20
  21 #include "lib/version.h"
  22 #include "lib/decrypted_ecinema_kdm.h"
  23 #include "lib/config.h"
  24 #include "lib/util.h"
  25 #include "lib/film.h"
  26 #include "lib/dcp_content.h"
  27 #include "lib/job_manager.h"
  28 #include "lib/cross.h"
  29 #include "lib/transcode_job.h"
  30 #include "lib/ffmpeg_encoder.h"
  31 #include "lib/signal_manager.h"
  32 #include <dcp/key.h>
  33 extern "C" {
  34 #include <libavformat/avformat.h>
  35 #include <libavutil/aes_ctr.h>
  36 }
  37 #include <boost/filesystem.hpp>
  38 #include <boost/optional.hpp>
  39 #include <openssl/rand.h>
  40 #include <getopt.h>
  41 #include <sys/stat.h>
  42 #include <sys/types.h>
  43 #include <string>
  44 #include <iostream>
  45
  46 using std::string;
  47 using std::cerr;
  48 using std::cout;
  49 using std::ofstream;
  50 using boost::optional;
  51 using boost::shared_ptr;
  52
  53 static void convert_dcp (boost::filesystem::path input, boost::filesystem::path output_file, boost::optional<boost::filesystem::path> kdm, int crf);
  54 static void convert_ffmpeg (boost::filesystem::path input, boost::filesystem::path output_file, string format, boost::optional<boost::filesystem::path> kdm);
  55 static void write_kdm (string id, string name, dcp::Key key, optional<boost::filesystem::path> kdm);
  56
  57 static void
  58 help (string n)
  59 {
  60         cerr << "Syntax: " << n << " [OPTION] <FILE>\n"
  61              << "  -v, --version        show DCP-o-matic version\n"
  62              << "  -h, --help           show this help\n"
  63              << "  -o, --output         output directory\n"
  64              << "  -f, --format         output format (mov or mp4; defaults to mov)\n"
  65              << "  -k, --kdm            KDM output filename (defaults to stdout)\n"
  66              << "  -c, --crf            quality (CRF) when transcoding from DCP (0 is best, 51 is worst, defaults to 23)\n"
  67              << "\n"
  68              << "<FILE> is the unencrypted .mp4 file.\n";
  69 }
  70
  71 int
  72 main (int argc, char* argv[])
  73 {
  74         optional<boost::filesystem::path> output;
  75         optional<string> format;
  76         optional<boost::filesystem::path> kdm;
  77         int crf = 23;
  78
  79         int option_index = 0;
  80         while (true) {
  81                 static struct option long_options[] = {
  82                         { "version", no_argument, 0, 'v' },
  83                         { "help", no_argument, 0, 'h' },
  84                         { "output", required_argument, 0, 'o' },
  85                         { "format", required_argument, 0, 'f' },
  86                         { "kdm", required_argument, 0, 'k' },
  87                         { "crf", required_argument, 0, 'c' },
  88                 };
  89
  90                 int c = getopt_long (argc, argv, "vho:f:k:c:", long_options, &option_index);
  91
  92                 if (c == -1) {
  93                         break;
  94                 }
  95
  96                 switch (c) {
  97                 case 'v':
  98                         cout << "dcpomatic version " << dcpomatic_version << " " << dcpomatic_git_commit << "\n";
  99                         exit (EXIT_SUCCESS);
 100                 case 'h':
 101                         help (argv[0]);
 102                         exit (EXIT_SUCCESS);
 103                 case 'o':
 104                         output = optarg;
 105                         break;
 106                 case 'f':
 107                         format = optarg;
 108                         break;
 109                 case 'k':
 110                         kdm = optarg;
 111                         break;
 112                 case 'c':
 113                         crf = atoi(optarg);
 114                         break;
 115                 }
 116         }
 117
 118         if (optind >= argc) {
 119                 help (argv[0]);
 120                 exit (EXIT_FAILURE);
 121         }
 122
 123         if (!output) {
 124                 cerr << "You must specify --output-media or -o\n";
 125                 exit (EXIT_FAILURE);
 126         }
 127
 128         if (!format) {
 129                 format = "mov";
 130         }
 131
 132         if (*format != "mov" && *format != "mp4") {
 133                 cerr << "Invalid format specified: must be mov or mp4\n";
 134                 exit (EXIT_FAILURE);
 135         }
 136
 137         dcpomatic_setup_path_encoding ();
 138         dcpomatic_setup ();
 139         signal_manager = new SignalManager ();
 140
 141         boost::filesystem::path input = argv[optind];
 142         boost::filesystem::path output_file;
 143         if (boost::filesystem::is_directory(input)) {
 144                 output_file = *output / (input.parent_path().filename().string() + ".ecinema");
 145         } else {
 146                 output_file = *output / (input.filename().string() + ".ecinema");
 147         }
 148
 149         if (!boost::filesystem::is_directory(*output)) {
 150                 boost::filesystem::create_directory (*output);
 151         }
 152
 153         av_register_all ();
 154
 155         if (boost::filesystem::is_directory(input)) {
 156                 /* Assume input is a DCP */
 157                 convert_dcp (input, output_file, kdm, crf);
 158         } else {
 159                 convert_ffmpeg (input, output_file, *format, kdm);
 160         }
 161 }
 162
 163 static void
 164 convert_ffmpeg (boost::filesystem::path input, boost::filesystem::path output_file, string format, optional<boost::filesystem::path> kdm)
 165 {
 166         AVFormatContext* input_fc = avformat_alloc_context ();
 167         if (avformat_open_input(&input_fc, input.string().c_str(), 0, 0) < 0) {
 168                 cerr << "Could not open input file\n";
 169                 exit (EXIT_FAILURE);
 170         }
 171
 172         if (avformat_find_stream_info (input_fc, 0) < 0) {
 173                 cerr << "Could not read stream information\n";
 174                 exit (EXIT_FAILURE);
 175         }
 176
 177         AVFormatContext* output_fc;
 178         avformat_alloc_output_context2 (&output_fc, av_guess_format(format.c_str(), 0, 0), 0, 0);
 179
 180         for (uint32_t i = 0; i < input_fc->nb_streams; ++i) {
 181                 AVStream* is = input_fc->streams[i];
 182                 AVStream* os = avformat_new_stream (output_fc, is->codec->codec);
 183                 if (avcodec_parameters_copy (os->codecpar, is->codecpar) < 0) {
 184                         cerr << "Could not set up output stream.\n";
 185                         exit (EXIT_FAILURE);
 186                 }
 187
 188                 os->avg_frame_rate = is->avg_frame_rate;
 189
 190                 switch (is->codec->codec_type) {
 191                 case AVMEDIA_TYPE_VIDEO:
 192                         os->time_base = is->time_base;
 193                         os->r_frame_rate = is->r_frame_rate;
 194                         os->sample_aspect_ratio = is->sample_aspect_ratio;
 195                         os->codec->time_base = is->codec->time_base;
 196                         os->codec->framerate = is->codec->framerate;
 197                         os->codec->pix_fmt = is->codec->pix_fmt;
 198                         break;
 199                 case AVMEDIA_TYPE_AUDIO:
 200                         os->codec->sample_fmt = is->codec->sample_fmt;
 201                         os->codec->bits_per_raw_sample = is->codec->bits_per_raw_sample;
 202                         os->codec->sample_rate = is->codec->sample_rate;
 203                         os->codec->channel_layout = is->codec->channel_layout;
 204                         os->codec->channels = is->codec->channels;
 205                         if (is->codecpar->codec_id == AV_CODEC_ID_PCM_S24LE) {
 206                                 /* XXX: fix incoming 24-bit files labelled lpcm, which apparently isn't allowed */
 207                                 os->codecpar->codec_tag = MKTAG('i', 'n', '2', '4');
 208                         }
 209                         break;
 210                 default:
 211                         /* XXX */
 212                         break;
 213                 }
 214         }
 215
 216         if (avio_open2 (&output_fc->pb, output_file.string().c_str(), AVIO_FLAG_WRITE, 0, 0) < 0) {
 217                 cerr << "Could not open output file `" << output_file.string() << "'\n";
 218                 exit (EXIT_FAILURE);
 219         }
 220
 221         dcp::Key key (AES_CTR_KEY_SIZE);
 222         AVDictionary* options = 0;
 223         av_dict_set (&options, "encryption_key", key.hex().c_str(), 0);
 224         /* XXX: is this OK? */
 225         av_dict_set (&options, "encryption_kid", "00000000000000000000000000000000", 0);
 226         av_dict_set (&options, "encryption_scheme", "cenc-aes-ctr", 0);
 227
 228         string id = dcp::make_uuid ();
 229         if (av_dict_set(&output_fc->metadata, SWAROOP_ID_TAG, id.c_str(), 0) < 0) {
 230                 cerr << "Could not write ID to output.\n";
 231                 exit (EXIT_FAILURE);
 232         }
 233
 234         if (avformat_write_header (output_fc, &options) < 0) {
 235                 cerr << "Could not write header to output.\n";
 236                 exit (EXIT_FAILURE);
 237         }
 238
 239         AVPacket packet;
 240         while (av_read_frame(input_fc, &packet) >= 0) {
 241                 AVStream* is = input_fc->streams[packet.stream_index];
 242                 AVStream* os = output_fc->streams[packet.stream_index];
 243                 packet.pts = av_rescale_q_rnd(packet.pts, is->time_base, os->time_base, (AVRounding) (AV_ROUND_NEAR_INF | AV_ROUND_PASS_MINMAX));
 244                 packet.dts = av_rescale_q_rnd(packet.dts, is->time_base, os->time_base, (AVRounding) (AV_ROUND_NEAR_INF | AV_ROUND_PASS_MINMAX));
 245                 packet.duration = av_rescale_q(packet.duration, is->time_base, os->time_base);
 246                 packet.pos = -1;
 247                 if (av_interleaved_write_frame (output_fc, &packet) < 0) {
 248                         cerr << "Could not write frame to output.\n";
 249                         exit (EXIT_FAILURE);
 250                 }
 251         }
 252
 253         av_write_trailer (output_fc);
 254
 255         avformat_free_context (input_fc);
 256         avformat_free_context (output_fc);
 257
 258         write_kdm (id, output_file.filename().string(), key, kdm);
 259 }
 260
 261 static void
 262 write_kdm (string id, string name, dcp::Key key, optional<boost::filesystem::path> kdm)
 263 {
 264         DecryptedECinemaKDM decrypted_kdm (id, name, key, optional<dcp::LocalTime>(), optional<dcp::LocalTime>());
 265         EncryptedECinemaKDM encrypted_kdm = decrypted_kdm.encrypt (Config::instance()->decryption_chain()->leaf());
 266
 267         if (kdm) {
 268                 ofstream f(kdm->c_str());
 269                 f << encrypted_kdm.as_xml() << "\n";
 270         } else {
 271                 cout << encrypted_kdm.as_xml() << "\n";
 272         }
 273 }
 274
 275 static void
 276 convert_dcp (boost::filesystem::path input, boost::filesystem::path output_file, optional<boost::filesystem::path> kdm, int crf)
 277 {
 278         shared_ptr<Film> film (new Film(boost::optional<boost::filesystem::path>()));
 279         shared_ptr<DCPContent> dcp (new DCPContent(input));
 280         film->examine_and_add_content (dcp);
 281
 282         JobManager* jm = JobManager::instance ();
 283         while (jm->work_to_do ()) {
 284                 while (signal_manager->ui_idle ()) {}
 285                 dcpomatic_sleep (1);
 286         }
 287         DCPOMATIC_ASSERT (!jm->errors());
 288
 289         string id = dcp::make_uuid ();
 290         dcp::Key key (AES_CTR_KEY_SIZE);
 291
 292         shared_ptr<TranscodeJob> job (new TranscodeJob(film));
 293         job->set_encoder (
 294                 shared_ptr<FFmpegEncoder>(
 295                         new FFmpegEncoder(film, job, output_file, EXPORT_FORMAT_H264, false, false, crf, key, id)
 296                         )
 297                 );
 298         jm->add (job);
 299         show_jobs_on_console (true);
 300
 301         write_kdm (id, output_file.filename().string(), key, kdm);
 302 }