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 (
  54         boost::filesystem::path input,
  55         boost::filesystem::path output_file,
  56         boost::optional<boost::filesystem::path> kdm,
  57         int crf
  58         );
  59 static void convert_ffmpeg (boost::filesystem::path input, boost::filesystem::path output_file, string format);
  60 static void write_kdm (string id, boost::filesystem::path name, dcp::Key key);
  61
  62 static void
  63 help (string n)
  64 {
  65         cerr << "Syntax: " << n << " [OPTION] <FILE>|<DIRECTORY>\n"
  66              << "  -v, --version        show DCP-o-matic version\n"
  67              << "  -h, --help           show this help\n"
  68              << "  -o, --output         output directory\n"
  69              << "  -f, --format         output format (mov or mp4; defaults to mov)\n"
  70              << "  -k, --kdm            DCP KDM filename (if required)\n"
  71              << "  -c, --crf            quality (CRF) when transcoding from DCP (0 is best, 51 is worst, defaults to 23)\n"
  72              << "\n"
  73              << "<FILE> is an unencrypted .mp4 file; <DIRECTORY> is a DCP directory.\n";
  74 }
  75
  76 int
  77 main (int argc, char* argv[])
  78 {
  79         optional<boost::filesystem::path> output;
  80         optional<string> format;
  81         optional<boost::filesystem::path> kdm;
  82         int crf = 23;
  83
  84         int option_index = 0;
  85         while (true) {
  86                 static struct option long_options[] = {
  87                         { "version", no_argument, 0, 'v' },
  88                         { "help", no_argument, 0, 'h' },
  89                         { "output", required_argument, 0, 'o' },
  90                         { "format", required_argument, 0, 'f' },
  91                         { "kdm", required_argument, 0, 'k' },
  92                         { "crf", required_argument, 0, 'c' },
  93                 };
  94
  95                 int c = getopt_long (argc, argv, "vho:f:k:c:", long_options, &option_index);
  96
  97                 if (c == -1) {
  98                         break;
  99                 }
 100
 101                 switch (c) {
 102                 case 'v':
 103                         cout << "dcpomatic version " << dcpomatic_version << " " << dcpomatic_git_commit << "\n";
 104                         exit (EXIT_SUCCESS);
 105                 case 'h':
 106                         help (argv[0]);
 107                         exit (EXIT_SUCCESS);
 108                 case 'o':
 109                         output = optarg;
 110                         break;
 111                 case 'f':
 112                         format = optarg;
 113                         break;
 114                 case 'k':
 115                         kdm = optarg;
 116                         break;
 117                 case 'c':
 118                         crf = atoi(optarg);
 119                         break;
 120                 }
 121         }
 122
 123         if (optind >= argc) {
 124                 help (argv[0]);
 125                 exit (EXIT_FAILURE);
 126         }
 127
 128         if (!output) {
 129                 cerr << "You must specify --output-media or -o\n";
 130                 exit (EXIT_FAILURE);
 131         }
 132
 133         if (!format) {
 134                 format = "mov";
 135         }
 136
 137         if (*format != "mov" && *format != "mp4") {
 138                 cerr << "Invalid format specified: must be mov or mp4\n";
 139                 exit (EXIT_FAILURE);
 140         }
 141
 142         dcpomatic_setup_path_encoding ();
 143         dcpomatic_setup ();
 144         signal_manager = new SignalManager ();
 145
 146         boost::filesystem::path input = argv[optind];
 147         boost::filesystem::path output_file;
 148         if (boost::filesystem::is_directory(input)) {
 149                 output_file = *output / (input.parent_path().filename().string() + ".ecinema");
 150         } else {
 151                 output_file = *output / (input.filename().string() + ".ecinema");
 152         }
 153
 154         if (!boost::filesystem::is_directory(*output)) {
 155                 boost::filesystem::create_directory (*output);
 156         }
 157
 158         av_register_all ();
 159
 160         if (boost::filesystem::is_directory(input)) {
 161                 /* Assume input is a DCP */
 162                 convert_dcp (input, output_file, kdm, crf);
 163         } else {
 164                 convert_ffmpeg (input, output_file, *format);
 165         }
 166 }
 167
 168 static void
 169 convert_ffmpeg (boost::filesystem::path input, boost::filesystem::path output_file, string format)
 170 {
 171         AVFormatContext* input_fc = avformat_alloc_context ();
 172         if (avformat_open_input(&input_fc, input.string().c_str(), 0, 0) < 0) {
 173                 cerr << "Could not open input file\n";
 174                 exit (EXIT_FAILURE);
 175         }
 176
 177         if (avformat_find_stream_info (input_fc, 0) < 0) {
 178                 cerr << "Could not read stream information\n";
 179                 exit (EXIT_FAILURE);
 180         }
 181
 182         AVFormatContext* output_fc;
 183         avformat_alloc_output_context2 (&output_fc, av_guess_format(format.c_str(), 0, 0), 0, 0);
 184
 185         for (uint32_t i = 0; i < input_fc->nb_streams; ++i) {
 186                 AVStream* is = input_fc->streams[i];
 187                 AVStream* os = avformat_new_stream (output_fc, is->codec->codec);
 188                 if (avcodec_parameters_copy (os->codecpar, is->codecpar) < 0) {
 189                         cerr << "Could not set up output stream.\n";
 190                         exit (EXIT_FAILURE);
 191                 }
 192
 193                 os->avg_frame_rate = is->avg_frame_rate;
 194
 195                 switch (is->codec->codec_type) {
 196                 case AVMEDIA_TYPE_VIDEO:
 197                         os->time_base = is->time_base;
 198                         os->r_frame_rate = is->r_frame_rate;
 199                         os->sample_aspect_ratio = is->sample_aspect_ratio;
 200                         os->codec->time_base = is->codec->time_base;
 201                         os->codec->framerate = is->codec->framerate;
 202                         os->codec->pix_fmt = is->codec->pix_fmt;
 203                         break;
 204                 case AVMEDIA_TYPE_AUDIO:
 205                         os->codec->sample_fmt = is->codec->sample_fmt;
 206                         os->codec->bits_per_raw_sample = is->codec->bits_per_raw_sample;
 207                         os->codec->sample_rate = is->codec->sample_rate;
 208                         os->codec->channel_layout = is->codec->channel_layout;
 209                         os->codec->channels = is->codec->channels;
 210                         if (is->codecpar->codec_id == AV_CODEC_ID_PCM_S24LE) {
 211                                 /* XXX: fix incoming 24-bit files labelled lpcm, which apparently isn't allowed */
 212                                 os->codecpar->codec_tag = MKTAG('i', 'n', '2', '4');
 213                         }
 214                         break;
 215                 default:
 216                         /* XXX */
 217                         break;
 218                 }
 219         }
 220
 221         if (avio_open2 (&output_fc->pb, output_file.string().c_str(), AVIO_FLAG_WRITE, 0, 0) < 0) {
 222                 cerr << "Could not open output file `" << output_file.string() << "'\n";
 223                 exit (EXIT_FAILURE);
 224         }
 225
 226         dcp::Key key (AES_CTR_KEY_SIZE);
 227         AVDictionary* options = 0;
 228         av_dict_set (&options, "encryption_key", key.hex().c_str(), 0);
 229         /* XXX: is this OK? */
 230         av_dict_set (&options, "encryption_kid", "00000000000000000000000000000000", 0);
 231         av_dict_set (&options, "encryption_scheme", "cenc-aes-ctr", 0);
 232
 233         string id = dcp::make_uuid ();
 234         if (av_dict_set(&output_fc->metadata, SWAROOP_ID_TAG, id.c_str(), 0) < 0) {
 235                 cerr << "Could not write ID to output.\n";
 236                 exit (EXIT_FAILURE);
 237         }
 238
 239         if (avformat_write_header (output_fc, &options) < 0) {
 240                 cerr << "Could not write header to output.\n";
 241                 exit (EXIT_FAILURE);
 242         }
 243
 244         AVPacket packet;
 245         while (av_read_frame(input_fc, &packet) >= 0) {
 246                 AVStream* is = input_fc->streams[packet.stream_index];
 247                 AVStream* os = output_fc->streams[packet.stream_index];
 248                 packet.pts = av_rescale_q_rnd(packet.pts, is->time_base, os->time_base, (AVRounding) (AV_ROUND_NEAR_INF | AV_ROUND_PASS_MINMAX));
 249                 packet.dts = av_rescale_q_rnd(packet.dts, is->time_base, os->time_base, (AVRounding) (AV_ROUND_NEAR_INF | AV_ROUND_PASS_MINMAX));
 250                 packet.duration = av_rescale_q(packet.duration, is->time_base, os->time_base);
 251                 packet.pos = -1;
 252                 if (av_interleaved_write_frame (output_fc, &packet) < 0) {
 253                         cerr << "Could not write frame to output.\n";
 254                         exit (EXIT_FAILURE);
 255                 }
 256         }
 257
 258         av_write_trailer (output_fc);
 259
 260         avformat_free_context (input_fc);
 261         avformat_free_context (output_fc);
 262
 263         write_kdm (id, output_file, key);
 264 }
 265
 266 static void
 267 write_kdm (string id, boost::filesystem::path name, dcp::Key key)
 268 {
 269         DecryptedECinemaKDM decrypted_kdm (id, name.filename().string(), key, optional<dcp::LocalTime>(), optional<dcp::LocalTime>());
 270         EncryptedECinemaKDM encrypted_kdm = decrypted_kdm.encrypt (Config::instance()->decryption_chain()->leaf());
 271
 272         ofstream f(string(name.string() + ".xml").c_str());
 273         f << encrypted_kdm.as_xml() << "\n";
 274 }
 275
 276 static void
 277 convert_dcp (
 278         boost::filesystem::path input, boost::filesystem::path output_file, optional<boost::filesystem::path> kdm, int crf
 279         )
 280 {
 281         shared_ptr<Film> film (new Film(boost::optional<boost::filesystem::path>()));
 282         shared_ptr<DCPContent> dcp (new DCPContent(input));
 283         film->examine_and_add_content (dcp);
 284         if (kdm) {
 285                 dcp->add_kdm (dcp::EncryptedKDM(dcp::file_to_string(*kdm)));
 286         }
 287
 288         JobManager* jm = JobManager::instance ();
 289         while (jm->work_to_do ()) {
 290                 while (signal_manager->ui_idle ()) {}
 291                 dcpomatic_sleep (1);
 292         }
 293         DCPOMATIC_ASSERT (!jm->errors());
 294
 295         string id = dcp::make_uuid ();
 296         dcp::Key key (AES_CTR_KEY_SIZE);
 297
 298         shared_ptr<TranscodeJob> job (new TranscodeJob(film));
 299         job->set_encoder (
 300                 shared_ptr<FFmpegEncoder>(
 301                         new FFmpegEncoder(film, job, output_file, EXPORT_FORMAT_H264_PCM, false, false, crf, key, id)
 302                         )
 303                 );
 304         jm->add (job);
 305         show_jobs_on_console (true);
 306
 307         write_kdm (id, output_file, key);
 308 }