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)
39 /* Make sure we zero these if something bad happened, otherwise
40 the caller might try to alloc lots of RAM.
49 FrameInfo::write (ostream& s)
51 s << offset << " " << size << " " << hash;
55 PictureAssetWriter::PictureAssetWriter (PictureAsset* asset, bool overwrite, bool interop, MXFMetadata const & metadata)
60 , _overwrite (overwrite)
62 , _metadata (metadata)
70 : frame_buffer (4 * Kumu::Megabyte)
73 ASDCP::JP2K::CodestreamParser j2k_parser;
74 ASDCP::JP2K::FrameBuffer frame_buffer;
75 ASDCP::WriterInfo writer_info;
76 ASDCP::JP2K::PictureDescriptor picture_descriptor;
77 ASDCP::AESEncContext* encryption_context;
80 struct MonoPictureAssetWriter::ASDCPState : public ASDCPStateBase
82 ASDCP::JP2K::MXFWriter mxf_writer;
85 struct StereoPictureAssetWriter::ASDCPState : public ASDCPStateBase
87 ASDCP::JP2K::MXFSWriter mxf_writer;
90 /** @param a Asset to write to. `a' must not be deleted while
91 * this writer class still exists, or bad things will happen.
93 MonoPictureAssetWriter::MonoPictureAssetWriter (PictureAsset* asset, bool overwrite, bool interop, MXFMetadata const & metadata)
94 : PictureAssetWriter (asset, overwrite, interop, metadata)
95 , _state (new MonoPictureAssetWriter::ASDCPState)
97 _state->encryption_context = asset->encryption_context ();
100 StereoPictureAssetWriter::StereoPictureAssetWriter (PictureAsset* asset, bool overwrite, bool interop, MXFMetadata const & metadata)
101 : PictureAssetWriter (asset, overwrite, interop, metadata)
102 , _state (new StereoPictureAssetWriter::ASDCPState)
103 , _next_eye (EYE_LEFT)
105 _state->encryption_context = asset->encryption_context ();
108 template <class P, class Q>
109 void libdcp::start (PictureAssetWriter* writer, shared_ptr<P> state, Q* asset, uint8_t* data, int size)
111 if (ASDCP_FAILURE (state->j2k_parser.OpenReadFrame (data, size, state->frame_buffer))) {
112 boost::throw_exception (MiscError ("could not parse J2K frame"));
115 state->j2k_parser.FillPictureDescriptor (state->picture_descriptor);
116 state->picture_descriptor.EditRate = ASDCP::Rational (asset->edit_rate(), 1);
118 asset->fill_writer_info (&state->writer_info, asset->uuid(), writer->_interop, writer->_metadata);
120 if (ASDCP_FAILURE (state->mxf_writer.OpenWrite (
121 asset->path().string().c_str(),
123 state->picture_descriptor,
128 boost::throw_exception (MXFFileError ("could not open MXF file for writing", asset->path().string()));
131 writer->_started = true;
135 MonoPictureAssetWriter::start (uint8_t* data, int size)
137 libdcp::start (this, _state, _asset, data, size);
141 StereoPictureAssetWriter::start (uint8_t* data, int size)
143 libdcp::start (this, _state, _asset, data, size);
147 MonoPictureAssetWriter::write (uint8_t* data, int size)
149 assert (!_finalized);
155 if (ASDCP_FAILURE (_state->j2k_parser.OpenReadFrame (data, size, _state->frame_buffer))) {
156 boost::throw_exception (MiscError ("could not parse J2K frame"));
159 uint64_t const before_offset = _state->mxf_writer.Tell ();
162 if (ASDCP_FAILURE (_state->mxf_writer.WriteFrame (_state->frame_buffer, _state->encryption_context, 0, &hash))) {
163 boost::throw_exception (MXFFileError ("error in writing video MXF", _asset->path().string()));
167 return FrameInfo (before_offset, _state->mxf_writer.Tell() - before_offset, hash);
170 /** Write a frame for one eye. Frames must be written left, then right, then left etc.
171 * @param data JPEG2000 data.
172 * @param size Size of data.
175 StereoPictureAssetWriter::write (uint8_t* data, int size)
177 assert (!_finalized);
183 if (ASDCP_FAILURE (_state->j2k_parser.OpenReadFrame (data, size, _state->frame_buffer))) {
184 boost::throw_exception (MiscError ("could not parse J2K frame"));
187 uint64_t const before_offset = _state->mxf_writer.Tell ();
191 _state->mxf_writer.WriteFrame (
192 _state->frame_buffer,
193 _next_eye == EYE_LEFT ? ASDCP::JP2K::SP_LEFT : ASDCP::JP2K::SP_RIGHT,
194 _state->encryption_context,
199 boost::throw_exception (MXFFileError ("error in writing video MXF", _asset->path().string()));
202 _next_eye = _next_eye == EYE_LEFT ? EYE_RIGHT : EYE_LEFT;
204 return FrameInfo (before_offset, _state->mxf_writer.Tell() - before_offset, hash);
208 MonoPictureAssetWriter::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()));
221 StereoPictureAssetWriter::fake_write (int size)
224 assert (!_finalized);
226 if (ASDCP_FAILURE (_state->mxf_writer.FakeWriteFrame (size))) {
227 boost::throw_exception (MXFFileError ("error in writing video MXF", _asset->path().string()));
230 _next_eye = _next_eye == EYE_LEFT ? EYE_RIGHT : EYE_LEFT;
235 MonoPictureAssetWriter::finalize ()
237 assert (!_finalized);
239 if (ASDCP_FAILURE (_state->mxf_writer.Finalize())) {
240 boost::throw_exception (MXFFileError ("error in finalizing video MXF", _asset->path().string()));
244 _asset->set_intrinsic_duration (_frames_written);
245 _asset->set_duration (_frames_written);
249 StereoPictureAssetWriter::finalize ()
251 assert (!_finalized);
253 if (ASDCP_FAILURE (_state->mxf_writer.Finalize())) {
254 boost::throw_exception (MXFFileError ("error in finalizing video MXF", _asset->path().string()));
258 _asset->set_intrinsic_duration (_frames_written / 2);
259 _asset->set_duration (_frames_written / 2);