2 Copyright (C) 2014-2020 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/>.
21 #include "dcp_examiner.h"
22 #include "dcp_content.h"
23 #include "exceptions.h"
27 #include <dcp/decrypted_kdm.h>
30 #include <dcp/reel_picture_asset.h>
31 #include <dcp/reel_sound_asset.h>
32 #include <dcp/mono_picture_asset.h>
33 #include <dcp/mono_picture_asset_reader.h>
34 #include <dcp/mono_picture_frame.h>
35 #include <dcp/stereo_picture_asset.h>
36 #include <dcp/stereo_picture_asset_reader.h>
37 #include <dcp/stereo_picture_frame.h>
38 #include <dcp/sound_asset.h>
39 #include <dcp/sound_asset_reader.h>
40 #include <dcp/subtitle_asset.h>
41 #include <dcp/reel_subtitle_asset.h>
42 #include <dcp/reel_closed_caption_asset.h>
43 #include <dcp/reel_markers_asset.h>
44 #include <dcp/sound_asset.h>
45 #include <boost/foreach.hpp>
52 using std::runtime_error;
54 using boost::shared_ptr;
55 using boost::dynamic_pointer_cast;
57 DCPExaminer::DCPExaminer (shared_ptr<const DCPContent> content, bool tolerant)
58 : DCP (content, tolerant)
64 , _needs_assets (false)
68 shared_ptr<dcp::CPL> cpl;
70 for (int i = 0; i < TEXT_COUNT; ++i) {
74 if (content->cpl ()) {
75 /* Use the CPL that the content was using before */
76 BOOST_FOREACH (shared_ptr<dcp::CPL> i, cpls()) {
77 if (i->id() == content->cpl().get()) {
82 /* Choose the CPL with the fewest unsatisfied references */
84 int least_unsatisfied = INT_MAX;
86 BOOST_FOREACH (shared_ptr<dcp::CPL> i, cpls()) {
88 BOOST_FOREACH (shared_ptr<dcp::Reel> j, i->reels()) {
89 if (j->main_picture() && !j->main_picture()->asset_ref().resolved()) {
92 if (j->main_sound() && !j->main_sound()->asset_ref().resolved()) {
95 if (j->main_subtitle() && !j->main_subtitle()->asset_ref().resolved()) {
100 if (unsatisfied < least_unsatisfied) {
101 least_unsatisfied = unsatisfied;
108 throw DCPError ("No CPLs found in DCP");
112 _name = cpl->content_title_text ();
113 _content_kind = cpl->content_kind ();
115 BOOST_FOREACH (shared_ptr<dcp::Reel> i, cpl->reels()) {
117 if (i->main_picture ()) {
118 if (!i->main_picture()->asset_ref().resolved()) {
119 /* We are missing this asset so we can't continue; examination will be repeated later */
120 _needs_assets = true;
124 dcp::Fraction const frac = i->main_picture()->edit_rate ();
125 float const fr = float(frac.numerator) / frac.denominator;
126 if (!_video_frame_rate) {
127 _video_frame_rate = fr;
128 } else if (_video_frame_rate.get() != fr) {
129 throw DCPError (_("Mismatched frame rates in DCP"));
133 shared_ptr<dcp::PictureAsset> asset = i->main_picture()->asset ();
135 _video_size = asset->size ();
136 } else if (_video_size.get() != asset->size ()) {
137 throw DCPError (_("Mismatched video sizes in DCP"));
140 _video_length += i->main_picture()->actual_duration();
143 if (i->main_sound ()) {
144 if (!i->main_sound()->asset_ref().resolved()) {
145 /* We are missing this asset so we can't continue; examination will be repeated later */
146 _needs_assets = true;
151 shared_ptr<dcp::SoundAsset> asset = i->main_sound()->asset ();
153 if (!_audio_channels) {
154 _audio_channels = asset->channels ();
155 } else if (_audio_channels.get() != asset->channels ()) {
156 throw DCPError (_("Mismatched audio channel counts in DCP"));
159 if (!_audio_frame_rate) {
160 _audio_frame_rate = asset->sampling_rate ();
161 } else if (_audio_frame_rate.get() != asset->sampling_rate ()) {
162 throw DCPError (_("Mismatched audio sample rates in DCP"));
165 _audio_length += i->main_sound()->actual_duration();
168 if (i->main_subtitle ()) {
169 if (!i->main_subtitle()->asset_ref().resolved()) {
170 /* We are missing this asset so we can't continue; examination will be repeated later */
171 _needs_assets = true;
175 _text_count[TEXT_OPEN_SUBTITLE] = 1;
178 BOOST_FOREACH (shared_ptr<dcp::ReelClosedCaptionAsset> j, i->closed_captions()) {
179 if (!j->asset_ref().resolved()) {
180 /* We are missing this asset so we can't continue; examination will be repeated later */
181 _needs_assets = true;
185 _text_count[TEXT_CLOSED_CAPTION]++;
188 if (i->main_markers ()) {
189 map<dcp::Marker, dcp::Time> rm = i->main_markers()->get();
190 _markers.insert (rm.begin(), rm.end());
193 if (i->main_picture()) {
194 _reel_lengths.push_back (i->main_picture()->actual_duration());
195 } else if (i->main_sound()) {
196 _reel_lengths.push_back (i->main_sound()->actual_duration());
197 } else if (i->main_subtitle()) {
198 _reel_lengths.push_back (i->main_subtitle()->actual_duration());
199 } else if (!i->closed_captions().empty()) {
200 _reel_lengths.push_back (i->closed_captions().front()->actual_duration());
204 _encrypted = cpl->encrypted ();
207 /* Check that we can read the first picture, sound and subtitle frames of each reel */
209 BOOST_FOREACH (shared_ptr<dcp::Reel> i, cpl->reels()) {
210 shared_ptr<dcp::PictureAsset> pic = i->main_picture()->asset ();
211 shared_ptr<dcp::MonoPictureAsset> mono = dynamic_pointer_cast<dcp::MonoPictureAsset> (pic);
212 shared_ptr<dcp::StereoPictureAsset> stereo = dynamic_pointer_cast<dcp::StereoPictureAsset> (pic);
215 mono->start_read()->get_frame(0)->xyz_image ();
217 stereo->start_read()->get_frame(0)->xyz_image (dcp::EYE_LEFT);
220 if (i->main_sound()) {
221 shared_ptr<dcp::SoundAsset> sound = i->main_sound()->asset ();
222 i->main_sound()->asset()->start_read()->get_frame(0);
225 if (i->main_subtitle()) {
226 i->main_subtitle()->asset()->subtitles ();
229 } catch (dcp::ReadError& e) {
231 } catch (dcp::MiscError& e) {
235 DCPOMATIC_ASSERT (cpl->standard ());
236 _standard = cpl->standard().get();
237 _three_d = !cpl->reels().empty() && cpl->reels().front()->main_picture() &&
238 dynamic_pointer_cast<dcp::StereoPictureAsset> (cpl->reels().front()->main_picture()->asset());