2 Copyright (C) 2014-2021 Carl Hetherington <cth@carlh.net>
4 This file is part of DCP-o-matic.
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.
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.
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/>.
22 #include "dcp_examiner.h"
23 #include "dcp_content.h"
24 #include "exceptions.h"
29 #include <dcp/decrypted_kdm.h>
32 #include <dcp/reel_picture_asset.h>
33 #include <dcp/reel_sound_asset.h>
34 #include <dcp/mono_picture_asset.h>
35 #include <dcp/mono_picture_asset_reader.h>
36 #include <dcp/mono_picture_frame.h>
37 #include <dcp/stereo_picture_asset.h>
38 #include <dcp/stereo_picture_asset_reader.h>
39 #include <dcp/stereo_picture_frame.h>
40 #include <dcp/sound_asset.h>
41 #include <dcp/sound_asset_reader.h>
42 #include <dcp/subtitle_asset.h>
43 #include <dcp/reel_atmos_asset.h>
44 #include <dcp/reel_subtitle_asset.h>
45 #include <dcp/reel_closed_caption_asset.h>
46 #include <dcp/reel_markers_asset.h>
47 #include <dcp/sound_asset.h>
54 using std::dynamic_pointer_cast;
55 using std::shared_ptr;
57 using boost::optional;
60 DCPExaminer::DCPExaminer (shared_ptr<const DCPContent> content, bool tolerant)
61 : DCP (content, tolerant)
63 shared_ptr<dcp::CPL> cpl;
65 for (int i = 0; i < static_cast<int>(TextType::COUNT); ++i) {
69 if (content->cpl ()) {
70 /* Use the CPL that the content was using before */
71 for (auto i: cpls()) {
72 if (i->id() == content->cpl().get()) {
77 /* Choose the CPL with the fewest unsatisfied references */
79 int least_unsatisfied = INT_MAX;
81 for (auto i: cpls()) {
83 for (auto j: i->reels()) {
84 if (j->main_picture() && !j->main_picture()->asset_ref().resolved()) {
87 if (j->main_sound() && !j->main_sound()->asset_ref().resolved()) {
90 if (j->main_subtitle() && !j->main_subtitle()->asset_ref().resolved()) {
93 if (j->atmos() && !j->atmos()->asset_ref().resolved()) {
98 if (unsatisfied < least_unsatisfied) {
99 least_unsatisfied = unsatisfied;
106 throw DCPError ("No CPLs found in DCP");
110 _name = cpl->content_title_text ();
111 _content_kind = cpl->content_kind ();
113 auto try_to_parse_language = [](optional<string> lang) -> boost::optional<dcp::LanguageTag> {
116 return dcp::LanguageTag (*lang);
122 for (auto i: cpl->reels()) {
124 if (i->main_picture ()) {
125 if (!i->main_picture()->asset_ref().resolved()) {
126 /* We are missing this asset so we can't continue; examination will be repeated later */
127 _needs_assets = true;
131 auto const frac = i->main_picture()->edit_rate ();
132 float const fr = float(frac.numerator) / frac.denominator;
133 if (!_video_frame_rate) {
134 _video_frame_rate = fr;
135 } else if (_video_frame_rate.get() != fr) {
136 throw DCPError (_("Mismatched frame rates in DCP"));
140 auto asset = i->main_picture()->asset();
142 _video_size = asset->size ();
143 } else if (_video_size.get() != asset->size ()) {
144 throw DCPError (_("Mismatched video sizes in DCP"));
147 _video_length += i->main_picture()->actual_duration();
150 if (i->main_sound ()) {
151 if (!i->main_sound()->asset_ref().resolved()) {
152 /* We are missing this asset so we can't continue; examination will be repeated later */
153 _needs_assets = true;
158 auto asset = i->main_sound()->asset();
160 if (!_audio_channels) {
161 _audio_channels = asset->channels ();
162 } else if (_audio_channels.get() != asset->channels ()) {
163 throw DCPError (_("Mismatched audio channel counts in DCP"));
166 if (!_audio_frame_rate) {
167 _audio_frame_rate = asset->sampling_rate ();
168 } else if (_audio_frame_rate.get() != asset->sampling_rate ()) {
169 throw DCPError (_("Mismatched audio sample rates in DCP"));
172 _audio_length += i->main_sound()->actual_duration();
173 _audio_language = try_to_parse_language (asset->language());
176 if (i->main_subtitle ()) {
177 if (!i->main_subtitle()->asset_ref().resolved()) {
178 /* We are missing this asset so we can't continue; examination will be repeated later */
179 _needs_assets = true;
183 _text_count[static_cast<int>(TextType::OPEN_SUBTITLE)] = 1;
184 _open_subtitle_language = try_to_parse_language (i->main_subtitle()->language());
187 for (auto j: i->closed_captions()) {
188 if (!j->asset_ref().resolved()) {
189 /* We are missing this asset so we can't continue; examination will be repeated later */
190 _needs_assets = true;
194 _text_count[static_cast<int>(TextType::CLOSED_CAPTION)]++;
195 _dcp_text_tracks.push_back (DCPTextTrack(j->annotation_text(), try_to_parse_language(j->language())));
198 if (i->main_markers ()) {
199 auto rm = i->main_markers()->get();
200 _markers.insert (rm.begin(), rm.end());
205 _atmos_length += i->atmos()->actual_duration();
206 if (_atmos_edit_rate != dcp::Fraction()) {
207 DCPOMATIC_ASSERT (i->atmos()->edit_rate() == _atmos_edit_rate);
209 _atmos_edit_rate = i->atmos()->edit_rate();
212 if (i->main_picture()) {
213 _reel_lengths.push_back (i->main_picture()->actual_duration());
214 } else if (i->main_sound()) {
215 _reel_lengths.push_back (i->main_sound()->actual_duration());
216 } else if (i->main_subtitle()) {
217 _reel_lengths.push_back (i->main_subtitle()->actual_duration());
218 } else if (!i->closed_captions().empty()) {
219 _reel_lengths.push_back (i->closed_captions().front()->actual_duration());
220 } else if (!i->atmos()) {
221 _reel_lengths.push_back (i->atmos()->actual_duration());
225 _encrypted = cpl->any_encrypted ();
228 /* Check first that anything encrypted has a key. We must do this, as if we try to
229 * read encrypted data with asdcplib without even offering a key it will just return
230 * the encrypted data. Secondly, check that we can read the first thing from each
231 * asset in each reel. This checks that when we do have a key it's the right one.
234 for (auto i: cpl->reels()) {
235 auto pic = i->main_picture()->asset();
236 if (pic->encrypted() && !pic->key()) {
239 auto mono = dynamic_pointer_cast<dcp::MonoPictureAsset>(pic);
240 auto stereo = dynamic_pointer_cast<dcp::StereoPictureAsset>(pic);
243 auto reader = mono->start_read();
244 reader->set_check_hmac (false);
245 reader->get_frame(0)->xyz_image();
247 auto reader = stereo->start_read();
248 reader->set_check_hmac (false);
249 reader->get_frame(0)->xyz_image(dcp::Eye::LEFT);
252 if (i->main_sound()) {
253 auto sound = i->main_sound()->asset ();
254 if (sound->encrypted() && !sound->key()) {
257 auto reader = i->main_sound()->asset()->start_read();
258 reader->set_check_hmac (false);
259 reader->get_frame(0);
262 if (i->main_subtitle()) {
263 auto sub = i->main_subtitle()->asset();
264 auto mxf_sub = dynamic_pointer_cast<dcp::MXF>(sub);
265 if (mxf_sub && mxf_sub->encrypted() && !mxf_sub->key()) {
272 auto atmos = i->atmos()->asset();
273 if (atmos->encrypted() && !atmos->key()) {
276 auto reader = atmos->start_read();
277 reader->set_check_hmac (false);
278 reader->get_frame(0);
281 } catch (dcp::ReadError& e) {
283 } catch (dcp::MiscError& e) {
287 _standard = cpl->standard();
288 _three_d = !cpl->reels().empty() && cpl->reels().front()->main_picture() &&
289 dynamic_pointer_cast<dcp::StereoPictureAsset> (cpl->reels().front()->main_picture()->asset());
290 _ratings = cpl->ratings();
291 for (auto i: cpl->content_versions()) {
292 _content_versions.push_back (i.label_text);