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
30 version. If you delete this exception statement from all source
31 files in the program, then also delete it here.
35 /** @file src/stereo_picture_asset.cc
36 * @brief StereoPictureAsset class
40 #include "dcp_assert.h"
41 #include "equality_options.h"
42 #include "exceptions.h"
43 #include "filesystem.h"
44 #include "stereo_picture_asset.h"
45 #include "stereo_picture_asset_reader.h"
46 #include "stereo_picture_asset_writer.h"
47 #include "stereo_picture_frame.h"
48 #include <asdcp/AS_DCP.h>
54 using std::shared_ptr;
55 using std::dynamic_pointer_cast;
59 StereoPictureAsset::StereoPictureAsset (boost::filesystem::path file)
62 Kumu::FileReaderFactory factory;
63 ASDCP::JP2K::MXFSReader reader(factory);
64 auto r = reader.OpenRead(dcp::filesystem::fix_long_path(file).string().c_str());
65 if (ASDCP_FAILURE(r)) {
66 boost::throw_exception (MXFFileError("could not open MXF file for reading", file.string(), r));
69 ASDCP::JP2K::PictureDescriptor desc;
70 if (ASDCP_FAILURE (reader.FillPictureDescriptor(desc))) {
71 boost::throw_exception (ReadError("could not read video MXF information"));
74 read_picture_descriptor (desc);
76 ASDCP::WriterInfo info;
77 if (ASDCP_FAILURE (reader.FillWriterInfo(info))) {
78 boost::throw_exception (ReadError("could not read video MXF information"));
81 _id = read_writer_info (info);
85 StereoPictureAsset::StereoPictureAsset (Fraction edit_rate, Standard standard)
86 : PictureAsset (edit_rate, standard)
92 shared_ptr<PictureAssetWriter>
93 StereoPictureAsset::start_write(boost::filesystem::path file, Behaviour behaviour)
95 return shared_ptr<StereoPictureAssetWriter>(new StereoPictureAssetWriter(this, file, behaviour == Behaviour::OVERWRITE_EXISTING));
99 shared_ptr<StereoPictureAssetReader>
100 StereoPictureAsset::start_read () const
102 return shared_ptr<StereoPictureAssetReader> (new StereoPictureAssetReader(this, key(), standard()));
107 StereoPictureAsset::equals(shared_ptr<const Asset> other, EqualityOptions const& opt, NoteHandler note) const
109 Kumu::FileReaderFactory factory;
110 ASDCP::JP2K::MXFSReader reader_A(factory);
112 auto r = reader_A.OpenRead(dcp::filesystem::fix_long_path(*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::MXFSReader reader_B(factory);
118 DCP_ASSERT (other->file());
119 r = reader_B.OpenRead(dcp::filesystem::fix_long_path(*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 StereoPictureAsset> (other);
138 DCP_ASSERT (other_picture);
140 auto reader = start_read ();
141 auto other_reader = other_picture->start_read ();
145 for (int i = 0; i < _intrinsic_duration; ++i) {
146 shared_ptr<const StereoPictureFrame> frame_A;
147 shared_ptr<const StereoPictureFrame> frame_B;
149 frame_A = reader->get_frame (i);
150 frame_B = other_reader->get_frame (i);
151 } catch (ReadError& e) {
152 /* If there was a problem reading the frame data we'll just assume
153 the two frames are not equal.
155 note (NoteType::ERROR, e.what ());
159 if (!frame_buffer_equals (
161 frame_A->left()->data(), frame_A->left()->size(),
162 frame_B->left()->data(), frame_B->left()->size()
165 if (!opt.keep_going) {
170 if (!frame_buffer_equals (
172 frame_A->right()->data(), frame_A->right()->size(),
173 frame_B->right()->data(), frame_B->right()->size()
176 if (!opt.keep_going) {