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 "lib/video_content.h"
  33 #include "lib/ratio.h"
  34 #include <dcp/key.h>
  35 extern "C" {
  36 #include <libavformat/avformat.h>
  37 #include <libavutil/aes_ctr.h>
  38 }
  39 #include <boost/filesystem.hpp>
  40 #include <boost/optional.hpp>
  41 #include <openssl/rand.h>
  42 #include <getopt.h>
  43 #include <sys/stat.h>
  44 #include <sys/types.h>
  45 #include <string>
  46 #include <iostream>
  47
  48 using std::string;
  49 using std::cerr;
  50 using std::cout;
  51 using std::ofstream;
  52 using boost::optional;
  53 using boost::shared_ptr;
  54
  55 static void convert_dcp (
  56         boost::filesystem::path input,
  57         boost::filesystem::path output_file,
  58         boost::optional<boost::filesystem::path> kdm,
  59         int crf
  60         );
  61 static void convert_ffmpeg (boost::filesystem::path input, boost::filesystem::path output_file, string format);
  62 static void write_kdm (string id, boost::filesystem::path name, dcp::Key key);
  63
  64 static void
  65 help (string n)
  66 {
  67         cerr << "Syntax: " << n << " [OPTION] <FILE>|<DIRECTORY>\n"
  68              << "  -v, --version        show DCP-o-matic version\n"
  69              << "  -h, --help           show this help\n"
  70              << "  -o, --output         output directory\n"
  71              << "  -f, --format         output format (mov or mp4; defaults to mov)\n"
  72              << "  -k, --kdm            DCP KDM filename (if required)\n"
  73              << "  -c, --crf            quality (CRF) when transcoding from DCP (0 is best, 51 is worst, defaults to 23)\n"
  74              << "\n"
  75              << "<FILE> is an unencrypted .mp4 file; <DIRECTORY> is a DCP directory.\n";
  76 }
  77
  78 int
  79 main (int argc, char* argv[])
  80 {
  81         optional<boost::filesystem::path> output;
  82         optional<string> format;
  83         optional<boost::filesystem::path> kdm;
  84         int crf = 23;
  85
  86         int option_index = 0;
  87         while (true) {
  88                 static struct option long_options[] = {
  89                         { "version", no_argument, 0, 'v' },
  90                         { "help", no_argument, 0, 'h' },
  91                         { "output", required_argument, 0, 'o' },
  92                         { "format", required_argument, 0, 'f' },
  93                         { "kdm", required_argument, 0, 'k' },
  94                         { "crf", required_argument, 0, 'c' },
  95                 };
  96
  97                 int c = getopt_long (argc, argv, "vho:f:k:c:", long_options, &option_index);
  98
  99                 if (c == -1) {
 100                         break;
 101                 }
 102
 103                 switch (c) {
 104                 case 'v':
 105                         cout << "dcpomatic version " << dcpomatic_version << " " << dcpomatic_git_commit << "\n";
 106                         exit (EXIT_SUCCESS);
 107                 case 'h':
 108                         help (argv[0]);
 109                         exit (EXIT_SUCCESS);
 110                 case 'o':
 111                         output = optarg;
 112                         break;
 113                 case 'f':
 114                         format = optarg;
 115                         break;
 116                 case 'k':
 117                         kdm = optarg;
 118                         break;
 119                 case 'c':
 120                         crf = atoi(optarg);
 121                         break;
 122                 }
 123         }
 124
 125         if (optind >= argc) {
 126                 help (argv[0]);
 127                 exit (EXIT_FAILURE);
 128         }
 129
 130         if (!output) {
 131                 cerr << "You must specify --output-media or -o\n";
 132                 exit (EXIT_FAILURE);
 133         }
 134
 135         if (!format) {
 136                 format = "mov";
 137         }
 138
 139         if (*format != "mov" && *format != "mp4") {
 140                 cerr << "Invalid format specified: must be mov or mp4\n";
 141                 exit (EXIT_FAILURE);
 142         }
 143
 144         dcpomatic_setup_path_encoding ();
 145         dcpomatic_setup ();
 146         signal_manager = new SignalManager ();
 147
 148         boost::filesystem::path input = argv[optind];
 149         boost::filesystem::path output_file;
 150         if (boost::filesystem::is_directory(input)) {
 151                 output_file = *output / (input.parent_path().filename().string() + ".ecinema");
 152         } else {
 153                 output_file = *output / (input.filename().string() + ".ecinema");
 154         }
 155
 156         if (!boost::filesystem::is_directory(*output)) {
 157                 boost::filesystem::create_directory (*output);
 158         }
 159
 160         av_register_all ();
 161
 162         if (boost::filesystem::is_directory(input)) {
 163                 /* Assume input is a DCP */
 164                 convert_dcp (input, output_file, kdm, crf);
 165         } else {
 166                 convert_ffmpeg (input, output_file, *format);
 167         }
 168 }
 169
 170 static void
 171 convert_ffmpeg (boost::filesystem::path input, boost::filesystem::path output_file, string format)
 172 {
 173         AVFormatContext* input_fc = avformat_alloc_context ();
 174         if (avformat_open_input(&input_fc, input.string().c_str(), 0, 0) < 0) {
 175                 cerr << "Could not open input file\n";
 176                 exit (EXIT_FAILURE);
 177         }
 178
 179         if (avformat_find_stream_info (input_fc, 0) < 0) {
 180                 cerr << "Could not read stream information\n";
 181                 exit (EXIT_FAILURE);
 182         }
 183
 184         AVFormatContext* output_fc;
 185         avformat_alloc_output_context2 (&output_fc, av_guess_format(format.c_str(), 0, 0), 0, 0);
 186
 187         for (uint32_t i = 0; i < input_fc->nb_streams; ++i) {
 188                 AVStream* is = input_fc->streams[i];
 189                 AVStream* os = avformat_new_stream (output_fc, is->codec->codec);
 190                 if (avcodec_parameters_copy (os->codecpar, is->codecpar) < 0) {
 191                         cerr << "Could not set up output stream.\n";
 192                         exit (EXIT_FAILURE);
 193                 }
 194
 195                 os->avg_frame_rate = is->avg_frame_rate;
 196
 197                 switch (is->codec->codec_type) {
 198                 case AVMEDIA_TYPE_VIDEO:
 199                         os->time_base = is->time_base;
 200                         os->r_frame_rate = is->r_frame_rate;
 201                         os->sample_aspect_ratio = is->sample_aspect_ratio;
 202                         os->codec->time_base = is->codec->time_base;
 203                         os->codec->framerate = is->codec->framerate;
 204                         os->codec->pix_fmt = is->codec->pix_fmt;
 205                         break;
 206                 case AVMEDIA_TYPE_AUDIO:
 207                         os->codec->sample_fmt = is->codec->sample_fmt;
 208                         os->codec->bits_per_raw_sample = is->codec->bits_per_raw_sample;
 209                         os->codec->sample_rate = is->codec->sample_rate;
 210                         os->codec->channel_layout = is->codec->channel_layout;
 211                         os->codec->channels = is->codec->channels;
 212                         if (is->codecpar->codec_id == AV_CODEC_ID_PCM_S24LE) {
 213                                 /* XXX: fix incoming 24-bit files labelled lpcm, which apparently isn't allowed */
 214                                 os->codecpar->codec_tag = MKTAG('i', 'n', '2', '4');
 215                         }
 216                         break;
 217                 default:
 218                         /* XXX */
 219                         break;
 220                 }
 221         }
 222
 223         if (avio_open2 (&output_fc->pb, output_file.string().c_str(), AVIO_FLAG_WRITE, 0, 0) < 0) {
 224                 cerr << "Could not open output file `" << output_file.string() << "'\n";
 225                 exit (EXIT_FAILURE);
 226         }
 227
 228         dcp::Key key (AES_CTR_KEY_SIZE);
 229         AVDictionary* options = 0;
 230         av_dict_set (&options, "encryption_key", key.hex().c_str(), 0);
 231         /* XXX: is this OK? */
 232         av_dict_set (&options, "encryption_kid", "00000000000000000000000000000000", 0);
 233         av_dict_set (&options, "encryption_scheme", "cenc-aes-ctr", 0);
 234
 235         string id = dcp::make_uuid ();
 236         if (av_dict_set(&output_fc->metadata, SWAROOP_ID_TAG, id.c_str(), 0) < 0) {
 237                 cerr << "Could not write ID to output.\n";
 238                 exit (EXIT_FAILURE);
 239         }
 240
 241         if (avformat_write_header (output_fc, &options) < 0) {
 242                 cerr << "Could not write header to output.\n";
 243                 exit (EXIT_FAILURE);
 244         }
 245
 246         AVPacket packet;
 247         while (av_read_frame(input_fc, &packet) >= 0) {
 248                 AVStream* is = input_fc->streams[packet.stream_index];
 249                 AVStream* os = output_fc->streams[packet.stream_index];
 250                 packet.pts = av_rescale_q_rnd(packet.pts, is->time_base, os->time_base, (AVRounding) (AV_ROUND_NEAR_INF | AV_ROUND_PASS_MINMAX));
 251                 packet.dts = av_rescale_q_rnd(packet.dts, is->time_base, os->time_base, (AVRounding) (AV_ROUND_NEAR_INF | AV_ROUND_PASS_MINMAX));
 252                 packet.duration = av_rescale_q(packet.duration, is->time_base, os->time_base);
 253                 packet.pos = -1;
 254                 if (av_interleaved_write_frame (output_fc, &packet) < 0) {
 255                         cerr << "Could not write frame to output.\n";
 256                         exit (EXIT_FAILURE);
 257                 }
 258         }
 259
 260         av_write_trailer (output_fc);
 261
 262         avformat_free_context (input_fc);
 263         avformat_free_context (output_fc);
 264
 265         write_kdm (id, output_file, key);
 266 }
 267
 268 static void
 269 write_kdm (string id, boost::filesystem::path name, dcp::Key key)
 270 {
 271         DecryptedECinemaKDM decrypted_kdm (id, name.filename().string(), key, optional<dcp::LocalTime>(), optional<dcp::LocalTime>());
 272         EncryptedECinemaKDM encrypted_kdm = decrypted_kdm.encrypt (Config::instance()->decryption_chain()->leaf());
 273
 274         ofstream f(string(name.string() + ".xml").c_str());
 275         f << encrypted_kdm.as_xml() << "\n";
 276 }
 277
 278 static void
 279 convert_dcp (
 280         boost::filesystem::path input, boost::filesystem::path output_file, optional<boost::filesystem::path> kdm, int crf
 281         )
 282 {
 283         shared_ptr<Film> film (new Film(boost::optional<boost::filesystem::path>()));
 284         shared_ptr<DCPContent> dcp (new DCPContent(input));
 285         film->examine_and_add_content (dcp);
 286         if (kdm) {
 287                 dcp->add_kdm (dcp::EncryptedKDM(dcp::file_to_string(*kdm)));
 288         }
 289
 290         JobManager* jm = JobManager::instance ();
 291         while (jm->work_to_do ()) {
 292                 while (signal_manager->ui_idle ()) {}
 293                 dcpomatic_sleep_seconds (1);
 294         }
 295         DCPOMATIC_ASSERT (!jm->errors());
 296
 297         film->set_container (Ratio::nearest_from_ratio(dcp->video->size().ratio()));
 298
 299         string id = dcp::make_uuid ();
 300         dcp::Key key (AES_CTR_KEY_SIZE);
 301
 302         shared_ptr<TranscodeJob> job (new TranscodeJob(film));
 303         job->set_encoder (
 304                 shared_ptr<FFmpegEncoder>(
 305                         new FFmpegEncoder(film, job, output_file, EXPORT_FORMAT_H264_PCM, false, false, crf, key, id)
 306                         )
 307                 );
 308         jm->add (job);
 309         show_jobs_on_console (true);
 310
 311         write_kdm (id, output_file, key);
 312 }