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 ASDCP::JP2K::MXFSReader reader;
63 auto r = reader.OpenRead(dcp::filesystem::fix_long_path(file).string().c_str());
64 if (ASDCP_FAILURE(r)) {
65 boost::throw_exception (MXFFileError("could not open MXF file for reading", file.string(), r));
68 ASDCP::JP2K::PictureDescriptor desc;
69 if (ASDCP_FAILURE (reader.FillPictureDescriptor(desc))) {
70 boost::throw_exception (ReadError("could not read video MXF information"));
73 read_picture_descriptor (desc);
75 ASDCP::WriterInfo info;
76 if (ASDCP_FAILURE (reader.FillWriterInfo(info))) {
77 boost::throw_exception (ReadError("could not read video MXF information"));
80 _id = read_writer_info (info);
84 StereoPictureAsset::StereoPictureAsset (Fraction edit_rate, Standard standard)
85 : PictureAsset (edit_rate, standard)
91 shared_ptr<PictureAssetWriter>
92 StereoPictureAsset::start_write(boost::filesystem::path file, Behaviour behaviour)
94 return shared_ptr<StereoPictureAssetWriter>(new StereoPictureAssetWriter(this, file, behaviour == Behaviour::OVERWRITE_EXISTING));
98 shared_ptr<StereoPictureAssetReader>
99 StereoPictureAsset::start_read () const
101 return shared_ptr<StereoPictureAssetReader> (new StereoPictureAssetReader(this, key(), standard()));
106 StereoPictureAsset::equals(shared_ptr<const Asset> other, EqualityOptions const& opt, NoteHandler note) const
108 ASDCP::JP2K::MXFSReader reader_A;
110 auto r = reader_A.OpenRead(dcp::filesystem::fix_long_path(*file()).string().c_str());
111 if (ASDCP_FAILURE (r)) {
112 boost::throw_exception (MXFFileError ("could not open MXF file for reading", file()->string(), r));
115 ASDCP::JP2K::MXFSReader reader_B;
116 DCP_ASSERT (other->file());
117 r = reader_B.OpenRead(dcp::filesystem::fix_long_path(*other->file()).string().c_str());
118 if (ASDCP_FAILURE (r)) {
119 boost::throw_exception (MXFFileError ("could not open MXF file for reading", other->file()->string(), r));
122 ASDCP::JP2K::PictureDescriptor desc_A;
123 if (ASDCP_FAILURE (reader_A.FillPictureDescriptor (desc_A))) {
124 boost::throw_exception (ReadError ("could not read video MXF information"));
126 ASDCP::JP2K::PictureDescriptor desc_B;
127 if (ASDCP_FAILURE (reader_B.FillPictureDescriptor (desc_B))) {
128 boost::throw_exception (ReadError ("could not read video MXF information"));
131 if (!descriptor_equals (desc_A, desc_B, note)) {
135 auto other_picture = dynamic_pointer_cast<const StereoPictureAsset> (other);
136 DCP_ASSERT (other_picture);
138 auto reader = start_read ();
139 auto other_reader = other_picture->start_read ();
143 for (int i = 0; i < _intrinsic_duration; ++i) {
144 shared_ptr<const StereoPictureFrame> frame_A;
145 shared_ptr<const StereoPictureFrame> frame_B;
147 frame_A = reader->get_frame (i);
148 frame_B = other_reader->get_frame (i);
149 } catch (ReadError& e) {
150 /* If there was a problem reading the frame data we'll just assume
151 the two frames are not equal.
153 note (NoteType::ERROR, e.what ());
157 if (!frame_buffer_equals (
159 frame_A->left()->data(), frame_A->left()->size(),
160 frame_B->left()->data(), frame_B->left()->size()
163 if (!opt.keep_going) {
168 if (!frame_buffer_equals (
170 frame_A->right()->data(), frame_A->right()->size(),
171 frame_B->right()->data(), frame_B->right()->size()
174 if (!opt.keep_going) {