2 Copyright (C) 2012-2015 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/>.
21 #include "stereo_picture_asset_writer.h"
22 #include "exceptions.h"
23 #include "dcp_assert.h"
24 #include "picture_asset.h"
26 #include "KM_fileio.h"
28 #include "picture_asset_writer_common.cc"
33 using boost::shared_ptr;
36 struct StereoPictureAssetWriter::ASDCPState : public ASDCPStateBase
38 ASDCP::JP2K::MXFSWriter mxf_writer;
41 StereoPictureAssetWriter::StereoPictureAssetWriter (PictureAsset* mxf, boost::filesystem::path file, Standard standard, bool overwrite)
42 : PictureAssetWriter (mxf, file, standard, overwrite)
43 , _state (new StereoPictureAssetWriter::ASDCPState)
44 , _next_eye (EYE_LEFT)
50 StereoPictureAssetWriter::start (uint8_t* data, int size)
52 dcp::start (this, _state, _standard, _picture_asset, data, size);
53 _picture_asset->set_frame_rate (Fraction (_picture_asset->edit_rate().numerator * 2, _picture_asset->edit_rate().denominator));
56 /** Write a frame for one eye. Frames must be written left, then right, then left etc.
57 * @param data JPEG2000 data.
58 * @param size Size of data.
61 StereoPictureAssetWriter::write (uint8_t* data, int size)
63 DCP_ASSERT (!_finalized);
69 if (ASDCP_FAILURE (_state->j2k_parser.OpenReadFrame (data, size, _state->frame_buffer))) {
70 boost::throw_exception (MiscError ("could not parse J2K frame"));
73 uint64_t const before_offset = _state->mxf_writer.Tell ();
76 Kumu::Result_t r = _state->mxf_writer.WriteFrame (
78 _next_eye == EYE_LEFT ? ASDCP::JP2K::SP_LEFT : ASDCP::JP2K::SP_RIGHT,
84 if (ASDCP_FAILURE (r)) {
85 boost::throw_exception (MXFFileError ("error in writing video MXF", _file.string(), r));
88 _next_eye = _next_eye == EYE_LEFT ? EYE_RIGHT : EYE_LEFT;
90 if (_next_eye == EYE_LEFT) {
94 return FrameInfo (before_offset, _state->mxf_writer.Tell() - before_offset, hash);
98 StereoPictureAssetWriter::fake_write (int size)
100 DCP_ASSERT (_started);
101 DCP_ASSERT (!_finalized);
103 Kumu::Result_t r = _state->mxf_writer.FakeWriteFrame (size, _next_eye == EYE_LEFT ? ASDCP::JP2K::SP_LEFT : ASDCP::JP2K::SP_RIGHT);
104 if (ASDCP_FAILURE (r)) {
105 boost::throw_exception (MXFFileError ("error in writing video MXF", _file.string(), r));
108 _next_eye = _next_eye == EYE_LEFT ? EYE_RIGHT : EYE_LEFT;
109 if (_next_eye == EYE_LEFT) {
115 StereoPictureAssetWriter::finalize ()
118 Kumu::Result_t r = _state->mxf_writer.Finalize();
119 if (ASDCP_FAILURE (r)) {
120 boost::throw_exception (MXFFileError ("error in finalizing video MXF", _file.string(), r));
124 _picture_asset->_intrinsic_duration = _frames_written;
125 return PictureAssetWriter::finalize ();