2 Copyright (C) 2012-2021 Carl Hetherington <cth@carlh.net>
4 This file is part of libdcp.
6 libdcp 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 libdcp 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 libdcp. If not, see <http://www.gnu.org/licenses/>.
19 In addition, as a special exception, the copyright holders give
20 permission to link the code of portions of this program with the
21 OpenSSL library under certain conditions as described in each
22 individual source file, and distribute linked combinations
25 You must obey the GNU General Public License in all respects
26 for all of the code used other than OpenSSL. If you modify
27 file(s) with this exception, you may extend this exception to your
28 version of the file(s), but you are not obligated to do so. If you
29 do not wish to do so, delete this exception statement from your
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31 files in the program, then also delete it here.
35 /** @file src/mono_picture_asset.cc
36 * @brief MonoPictureAsset class
40 #include "mono_picture_asset.h"
41 #include "mono_picture_asset_writer.h"
42 #include "mono_picture_asset_reader.h"
43 #include "exceptions.h"
44 #include "dcp_assert.h"
45 #include "mono_picture_frame.h"
46 #include "compose.hpp"
47 #include <asdcp/AS_DCP.h>
48 #include <asdcp/KM_fileio.h>
55 using std::shared_ptr;
56 using std::dynamic_pointer_cast;
57 using std::make_shared;
58 #if BOOST_VERSION >= 106100
59 using namespace boost::placeholders;
64 MonoPictureAsset::MonoPictureAsset (boost::filesystem::path file)
67 ASDCP::JP2K::MXFReader reader;
68 auto r = reader.OpenRead (file.string().c_str());
69 if (ASDCP_FAILURE(r)) {
70 boost::throw_exception (MXFFileError("could not open MXF file for reading", file.string(), r));
73 ASDCP::JP2K::PictureDescriptor desc;
74 if (ASDCP_FAILURE (reader.FillPictureDescriptor(desc))) {
75 boost::throw_exception (ReadError("could not read video MXF information"));
78 read_picture_descriptor (desc);
80 ASDCP::WriterInfo info;
81 if (ASDCP_FAILURE (reader.FillWriterInfo (info))) {
82 boost::throw_exception (ReadError("could not read video MXF information"));
85 _id = read_writer_info (info);
89 MonoPictureAsset::MonoPictureAsset (Fraction edit_rate, Standard standard)
90 : PictureAsset (edit_rate, standard)
97 storing_note_handler (list<pair<NoteType, string>>& notes, NoteType t, string s)
99 notes.push_back (make_pair (t, s));
104 MonoPictureAsset::equals (shared_ptr<const Asset> other, EqualityOptions opt, NoteHandler note) const
106 if (!dynamic_pointer_cast<const MonoPictureAsset>(other)) {
110 ASDCP::JP2K::MXFReader reader_A;
112 auto r = reader_A.OpenRead (_file->string().c_str());
113 if (ASDCP_FAILURE(r)) {
114 boost::throw_exception (MXFFileError("could not open MXF file for reading", _file->string(), r));
117 ASDCP::JP2K::MXFReader reader_B;
118 DCP_ASSERT (other->file ());
119 r = reader_B.OpenRead (other->file()->string().c_str());
120 if (ASDCP_FAILURE (r)) {
121 boost::throw_exception (MXFFileError ("could not open MXF file for reading", other->file()->string(), r));
124 ASDCP::JP2K::PictureDescriptor desc_A;
125 if (ASDCP_FAILURE (reader_A.FillPictureDescriptor (desc_A))) {
126 boost::throw_exception (ReadError ("could not read video MXF information"));
128 ASDCP::JP2K::PictureDescriptor desc_B;
129 if (ASDCP_FAILURE (reader_B.FillPictureDescriptor (desc_B))) {
130 boost::throw_exception (ReadError ("could not read video MXF information"));
133 if (!descriptor_equals (desc_A, desc_B, note)) {
137 auto other_picture = dynamic_pointer_cast<const MonoPictureAsset> (other);
138 DCP_ASSERT (other_picture);
142 auto reader = start_read ();
143 auto other_reader = other_picture->start_read ();
146 #pragma omp parallel for
149 for (int i = 0; i < _intrinsic_duration; ++i) {
150 if (i >= other_picture->intrinsic_duration()) {
154 if (result || opt.keep_going) {
156 auto frame_A = reader->get_frame (i);
157 auto frame_B = other_reader->get_frame (i);
159 list<pair<NoteType, string>> notes;
161 if (!frame_buffer_equals (
162 i, opt, bind (&storing_note_handler, boost::ref(notes), _1, _2),
163 frame_A->data(), frame_A->size(),
164 frame_B->data(), frame_B->size()
173 note (NoteType::PROGRESS, String::compose("Compared video frame %1 of %2", i, _intrinsic_duration));
174 for (auto const& i: notes) {
175 note (i.first, i.second);
185 shared_ptr<PictureAssetWriter>
186 MonoPictureAsset::start_write (boost::filesystem::path file, bool overwrite)
188 /* Can't use make_shared here as the MonoPictureAssetWriter constructor is private */
189 return shared_ptr<MonoPictureAssetWriter>(new MonoPictureAssetWriter(this, file, overwrite));
192 shared_ptr<MonoPictureAssetReader>
193 MonoPictureAsset::start_read () const
195 /* Can't use make_shared here as the MonoPictureAssetReader constructor is private */
196 return shared_ptr<MonoPictureAssetReader>(new MonoPictureAssetReader(this, key(), standard()));
201 MonoPictureAsset::cpl_node_name () const
203 return "MainPicture";