2 Copyright (C) 2014 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/reel_subtitle_asset.h>
39 #include <dcp/sound_asset.h>
40 #include <boost/foreach.hpp>
47 using std::runtime_error;
48 using boost::shared_ptr;
49 using boost::dynamic_pointer_cast;
51 DCPExaminer::DCPExaminer (shared_ptr<const DCPContent> content)
55 , _has_subtitles (false)
57 , _needs_assets (false)
61 shared_ptr<dcp::CPL> cpl;
63 if (content->cpl ()) {
64 /* Use the CPL that the content was using before */
65 BOOST_FOREACH (shared_ptr<dcp::CPL> i, cpls()) {
66 if (i->id() == content->cpl().get()) {
71 /* Choose the CPL with the fewest unsatisfied references */
73 int least_unsatisfied = INT_MAX;
75 BOOST_FOREACH (shared_ptr<dcp::CPL> i, cpls()) {
77 BOOST_FOREACH (shared_ptr<dcp::Reel> j, i->reels()) {
78 if (j->main_picture() && !j->main_picture()->asset_ref().resolved()) {
81 if (j->main_sound() && !j->main_sound()->asset_ref().resolved()) {
84 if (j->main_subtitle() && !j->main_subtitle()->asset_ref().resolved()) {
89 if (unsatisfied < least_unsatisfied) {
90 least_unsatisfied = unsatisfied;
97 throw DCPError ("No CPLs found in DCP");
101 _name = cpl->content_title_text ();
103 BOOST_FOREACH (shared_ptr<dcp::Reel> i, cpl->reels()) {
105 if (i->main_picture ()) {
106 if (!i->main_picture()->asset_ref().resolved()) {
107 /* We are missing this asset so we can't continue; examination will be repeated later */
108 _needs_assets = true;
112 dcp::Fraction const frac = i->main_picture()->edit_rate ();
113 float const fr = float(frac.numerator) / frac.denominator;
114 if (!_video_frame_rate) {
115 _video_frame_rate = fr;
116 } else if (_video_frame_rate.get() != fr) {
117 throw DCPError (_("Mismatched frame rates in DCP"));
120 shared_ptr<dcp::PictureAsset> asset = i->main_picture()->asset ();
122 _video_size = asset->size ();
123 } else if (_video_size.get() != asset->size ()) {
124 throw DCPError (_("Mismatched video sizes in DCP"));
127 _video_length += i->main_picture()->duration();
130 if (i->main_sound ()) {
131 if (!i->main_sound()->asset_ref().resolved()) {
132 /* We are missing this asset so we can't continue; examination will be repeated later */
133 _needs_assets = true;
137 shared_ptr<dcp::SoundAsset> asset = i->main_sound()->asset ();
139 if (!_audio_channels) {
140 _audio_channels = asset->channels ();
141 } else if (_audio_channels.get() != asset->channels ()) {
142 throw DCPError (_("Mismatched audio channel counts in DCP"));
145 if (!_audio_frame_rate) {
146 _audio_frame_rate = asset->sampling_rate ();
147 } else if (_audio_frame_rate.get() != asset->sampling_rate ()) {
148 throw DCPError (_("Mismatched audio sample rates in DCP"));
151 _audio_length += i->main_sound()->duration();
154 if (i->main_subtitle ()) {
155 if (!i->main_subtitle()->asset_ref().resolved()) {
156 /* We are missing this asset so we can't continue; examination will be repeated later */
157 _needs_assets = true;
161 _has_subtitles = true;
165 _encrypted = cpl->encrypted ();
168 /* Check that we can read the first picture frame */
170 if (!cpl->reels().empty ()) {
171 shared_ptr<dcp::PictureAsset> asset = cpl->reels().front()->main_picture()->asset ();
172 shared_ptr<dcp::MonoPictureAsset> mono = dynamic_pointer_cast<dcp::MonoPictureAsset> (asset);
173 shared_ptr<dcp::StereoPictureAsset> stereo = dynamic_pointer_cast<dcp::StereoPictureAsset> (asset);
176 mono->start_read()->get_frame(0)->xyz_image ();
178 stereo->start_read()->get_frame(0)->xyz_image (dcp::EYE_LEFT);
182 } catch (dcp::DCPReadError& e) {
184 if (_encrypted && content->kdm ()) {
185 /* XXX: maybe don't use an exception for this */
186 throw runtime_error (_("The KDM does not decrypt the DCP. Perhaps it is targeted at the wrong CPL."));
190 DCPOMATIC_ASSERT (cpl->standard ());
191 _standard = cpl->standard().get();
192 _three_d = !cpl->reels().empty() && cpl->reels().front()->main_picture() &&
193 dynamic_pointer_cast<dcp::StereoPictureAsset> (cpl->reels().front()->main_picture()->asset());