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 "exceptions.h"
42 #include "stereo_picture_asset.h"
43 #include "stereo_picture_asset_reader.h"
44 #include "stereo_picture_asset_writer.h"
45 #include "stereo_picture_frame.h"
46 #include <asdcp/AS_DCP.h>
52 using std::shared_ptr;
53 using std::dynamic_pointer_cast;
57 StereoPictureAsset::StereoPictureAsset (boost::filesystem::path file)
60 ASDCP::JP2K::MXFSReader reader;
61 auto r = reader.OpenRead (file.string().c_str());
62 if (ASDCP_FAILURE(r)) {
63 boost::throw_exception (MXFFileError("could not open MXF file for reading", file.string(), r));
66 ASDCP::JP2K::PictureDescriptor desc;
67 if (ASDCP_FAILURE (reader.FillPictureDescriptor(desc))) {
68 boost::throw_exception (ReadError("could not read video MXF information"));
71 read_picture_descriptor (desc);
73 ASDCP::WriterInfo info;
74 if (ASDCP_FAILURE (reader.FillWriterInfo(info))) {
75 boost::throw_exception (ReadError("could not read video MXF information"));
78 _id = read_writer_info (info);
82 StereoPictureAsset::StereoPictureAsset (Fraction edit_rate, Standard standard)
83 : PictureAsset (edit_rate, standard)
89 shared_ptr<PictureAssetWriter>
90 StereoPictureAsset::start_write(boost::filesystem::path file, Behaviour behaviour)
92 return shared_ptr<StereoPictureAssetWriter>(new StereoPictureAssetWriter(this, file, behaviour == Behaviour::OVERWRITE_EXISTING));
96 shared_ptr<StereoPictureAssetReader>
97 StereoPictureAsset::start_read () const
99 return shared_ptr<StereoPictureAssetReader> (new StereoPictureAssetReader(this, key(), standard()));
104 StereoPictureAsset::equals(shared_ptr<const Asset> other, EqualityOptions const& opt, NoteHandler note) const
106 ASDCP::JP2K::MXFSReader reader_A;
108 auto r = reader_A.OpenRead (file()->string().c_str());
109 if (ASDCP_FAILURE (r)) {
110 boost::throw_exception (MXFFileError ("could not open MXF file for reading", file()->string(), r));
113 ASDCP::JP2K::MXFSReader reader_B;
114 DCP_ASSERT (other->file());
115 r = reader_B.OpenRead (other->file()->string().c_str());
116 if (ASDCP_FAILURE (r)) {
117 boost::throw_exception (MXFFileError ("could not open MXF file for reading", other->file()->string(), r));
120 ASDCP::JP2K::PictureDescriptor desc_A;
121 if (ASDCP_FAILURE (reader_A.FillPictureDescriptor (desc_A))) {
122 boost::throw_exception (ReadError ("could not read video MXF information"));
124 ASDCP::JP2K::PictureDescriptor desc_B;
125 if (ASDCP_FAILURE (reader_B.FillPictureDescriptor (desc_B))) {
126 boost::throw_exception (ReadError ("could not read video MXF information"));
129 if (!descriptor_equals (desc_A, desc_B, note)) {
133 auto other_picture = dynamic_pointer_cast<const StereoPictureAsset> (other);
134 DCP_ASSERT (other_picture);
136 auto reader = start_read ();
137 auto other_reader = other_picture->start_read ();
141 for (int i = 0; i < _intrinsic_duration; ++i) {
142 shared_ptr<const StereoPictureFrame> frame_A;
143 shared_ptr<const StereoPictureFrame> frame_B;
145 frame_A = reader->get_frame (i);
146 frame_B = other_reader->get_frame (i);
147 } catch (ReadError& e) {
148 /* If there was a problem reading the frame data we'll just assume
149 the two frames are not equal.
151 note (NoteType::ERROR, e.what ());
155 if (!frame_buffer_equals (
157 frame_A->left()->data(), frame_A->left()->size(),
158 frame_B->left()->data(), frame_B->left()->size()
161 if (!opt.keep_going) {
166 if (!frame_buffer_equals (
168 frame_A->right()->data(), frame_A->right()->size(),
169 frame_B->right()->data(), frame_B->right()->size()
172 if (!opt.keep_going) {