2 Copyright (C) 2012-2013 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #include "KM_fileio.h"
22 #include "picture_asset_writer.h"
23 #include "exceptions.h"
24 #include "picture_asset.h"
29 using boost::shared_ptr;
30 using namespace libdcp;
32 FrameInfo::FrameInfo (istream& s)
34 s >> offset >> size >> hash;
38 FrameInfo::write (ostream& s)
40 s << offset << " " << size << " " << hash;
44 PictureAssetWriter::PictureAssetWriter (PictureAsset* asset, bool overwrite, MXFMetadata const & metadata)
49 , _overwrite (overwrite)
50 , _metadata (metadata)
58 : frame_buffer (4 * Kumu::Megabyte)
61 ASDCP::JP2K::CodestreamParser j2k_parser;
62 ASDCP::JP2K::FrameBuffer frame_buffer;
63 ASDCP::WriterInfo writer_info;
64 ASDCP::JP2K::PictureDescriptor picture_descriptor;
67 struct MonoPictureAssetWriter::ASDCPState : public ASDCPStateBase
69 ASDCP::JP2K::MXFWriter mxf_writer;
72 struct StereoPictureAssetWriter::ASDCPState : public ASDCPStateBase
74 ASDCP::JP2K::MXFSWriter mxf_writer;
77 /** @param a Asset to write to. `a' must not be deleted while
78 * this writer class still exists, or bad things will happen.
80 MonoPictureAssetWriter::MonoPictureAssetWriter (PictureAsset* asset, bool overwrite, MXFMetadata const & metadata)
81 : PictureAssetWriter (asset, overwrite, metadata)
82 , _state (new MonoPictureAssetWriter::ASDCPState)
87 StereoPictureAssetWriter::StereoPictureAssetWriter (PictureAsset* asset, bool overwrite, MXFMetadata const & metadata)
88 : PictureAssetWriter (asset, overwrite, metadata)
89 , _state (new StereoPictureAssetWriter::ASDCPState)
90 , _next_eye (EYE_LEFT)
95 template <class P, class Q>
96 void libdcp::start (PictureAssetWriter* writer, shared_ptr<P> state, Q* asset, uint8_t* data, int size)
98 if (ASDCP_FAILURE (state->j2k_parser.OpenReadFrame (data, size, state->frame_buffer))) {
99 boost::throw_exception (MiscError ("could not parse J2K frame"));
102 state->j2k_parser.FillPictureDescriptor (state->picture_descriptor);
103 state->picture_descriptor.EditRate = ASDCP::Rational (asset->edit_rate(), 1);
105 asset->fill_writer_info (&state->writer_info, asset->uuid(), writer->_metadata);
107 if (ASDCP_FAILURE (state->mxf_writer.OpenWrite (
108 asset->path().string().c_str(),
110 state->picture_descriptor,
115 boost::throw_exception (MXFFileError ("could not open MXF file for writing", asset->path().string()));
118 writer->_started = true;
122 MonoPictureAssetWriter::start (uint8_t* data, int size)
124 libdcp::start (this, _state, _asset, data, size);
128 StereoPictureAssetWriter::start (uint8_t* data, int size)
130 libdcp::start (this, _state, _asset, data, size);
134 MonoPictureAssetWriter::write (uint8_t* data, int size)
136 assert (!_finalized);
142 if (ASDCP_FAILURE (_state->j2k_parser.OpenReadFrame (data, size, _state->frame_buffer))) {
143 boost::throw_exception (MiscError ("could not parse J2K frame"));
146 uint64_t const before_offset = _state->mxf_writer.Tell ();
149 if (ASDCP_FAILURE (_state->mxf_writer.WriteFrame (_state->frame_buffer, 0, 0, &hash))) {
150 boost::throw_exception (MXFFileError ("error in writing video MXF", _asset->path().string()));
154 return FrameInfo (before_offset, _state->mxf_writer.Tell() - before_offset, hash);
157 /** Write a frame for one eye. Frames must be written left, then right, then left etc.
158 * @param data JPEG2000 data.
159 * @param size Size of data.
162 StereoPictureAssetWriter::write (uint8_t* data, int size)
164 assert (!_finalized);
170 if (ASDCP_FAILURE (_state->j2k_parser.OpenReadFrame (data, size, _state->frame_buffer))) {
171 boost::throw_exception (MiscError ("could not parse J2K frame"));
174 uint64_t const before_offset = _state->mxf_writer.Tell ();
178 _state->mxf_writer.WriteFrame (
179 _state->frame_buffer,
180 _next_eye == EYE_LEFT ? ASDCP::JP2K::SP_LEFT : ASDCP::JP2K::SP_RIGHT,
186 boost::throw_exception (MXFFileError ("error in writing video MXF", _asset->path().string()));
189 _next_eye = _next_eye == EYE_LEFT ? EYE_RIGHT : EYE_LEFT;
191 return FrameInfo (before_offset, _state->mxf_writer.Tell() - before_offset, hash);
195 MonoPictureAssetWriter::fake_write (int size)
198 assert (!_finalized);
200 if (ASDCP_FAILURE (_state->mxf_writer.FakeWriteFrame (size))) {
201 boost::throw_exception (MXFFileError ("error in writing video MXF", _asset->path().string()));
208 StereoPictureAssetWriter::fake_write (int size)
211 assert (!_finalized);
213 if (ASDCP_FAILURE (_state->mxf_writer.FakeWriteFrame (size))) {
214 boost::throw_exception (MXFFileError ("error in writing video MXF", _asset->path().string()));
217 _next_eye = _next_eye == EYE_LEFT ? EYE_RIGHT : EYE_LEFT;
222 MonoPictureAssetWriter::finalize ()
224 assert (!_finalized);
226 if (ASDCP_FAILURE (_state->mxf_writer.Finalize())) {
227 boost::throw_exception (MXFFileError ("error in finalizing video MXF", _asset->path().string()));
231 _asset->set_intrinsic_duration (_frames_written);
232 _asset->set_duration (_frames_written);
236 StereoPictureAssetWriter::finalize ()
238 assert (!_finalized);
240 if (ASDCP_FAILURE (_state->mxf_writer.Finalize())) {
241 boost::throw_exception (MXFFileError ("error in finalizing video MXF", _asset->path().string()));
245 _asset->set_intrinsic_duration (_frames_written / 2);
246 _asset->set_duration (_frames_written / 2);