2 Copyright (C) 2012-2016 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.
34 #include "stereo_picture_asset_writer.h"
35 #include "exceptions.h"
36 #include "dcp_assert.h"
37 #include "picture_asset.h"
39 #include "KM_fileio.h"
41 #include "picture_asset_writer_common.cc"
46 using boost::shared_ptr;
49 struct StereoPictureAssetWriter::ASDCPState : public ASDCPStateBase
51 ASDCP::JP2K::MXFSWriter mxf_writer;
54 StereoPictureAssetWriter::StereoPictureAssetWriter (PictureAsset* mxf, boost::filesystem::path file, Standard standard, bool overwrite)
55 : PictureAssetWriter (mxf, file, standard, overwrite)
56 , _state (new StereoPictureAssetWriter::ASDCPState)
57 , _next_eye (EYE_LEFT)
63 StereoPictureAssetWriter::start (uint8_t* data, int size)
65 dcp::start (this, _state, _standard, _picture_asset, data, size);
66 _picture_asset->set_frame_rate (Fraction (_picture_asset->edit_rate().numerator * 2, _picture_asset->edit_rate().denominator));
69 /** Write a frame for one eye. Frames must be written left, then right, then left etc.
70 * @param data JPEG2000 data.
71 * @param size Size of data.
74 StereoPictureAssetWriter::write (uint8_t* data, int size)
76 DCP_ASSERT (!_finalized);
82 if (ASDCP_FAILURE (_state->j2k_parser.OpenReadFrame (data, size, _state->frame_buffer))) {
83 boost::throw_exception (MiscError ("could not parse J2K frame"));
86 uint64_t const before_offset = _state->mxf_writer.Tell ();
89 Kumu::Result_t r = _state->mxf_writer.WriteFrame (
91 _next_eye == EYE_LEFT ? ASDCP::JP2K::SP_LEFT : ASDCP::JP2K::SP_RIGHT,
97 if (ASDCP_FAILURE (r)) {
98 boost::throw_exception (MXFFileError ("error in writing video MXF", _file.string(), r));
101 _next_eye = _next_eye == EYE_LEFT ? EYE_RIGHT : EYE_LEFT;
103 if (_next_eye == EYE_LEFT) {
107 return FrameInfo (before_offset, _state->mxf_writer.Tell() - before_offset, hash);
111 StereoPictureAssetWriter::fake_write (int size)
113 DCP_ASSERT (_started);
114 DCP_ASSERT (!_finalized);
116 Kumu::Result_t r = _state->mxf_writer.FakeWriteFrame (size, _next_eye == EYE_LEFT ? ASDCP::JP2K::SP_LEFT : ASDCP::JP2K::SP_RIGHT);
117 if (ASDCP_FAILURE (r)) {
118 boost::throw_exception (MXFFileError ("error in writing video MXF", _file.string(), r));
121 _next_eye = _next_eye == EYE_LEFT ? EYE_RIGHT : EYE_LEFT;
122 if (_next_eye == EYE_LEFT) {
128 StereoPictureAssetWriter::finalize ()
131 Kumu::Result_t r = _state->mxf_writer.Finalize();
132 if (ASDCP_FAILURE (r)) {
133 boost::throw_exception (MXFFileError ("error in finalizing video MXF", _file.string(), r));
137 _picture_asset->_intrinsic_duration = _frames_written;
138 return PictureAssetWriter::finalize ();