2 Copyright (C) 2012 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.
20 /** @file src/picture_asset.cc
21 * @brief An asset made up of JPEG2000 files
28 #include <boost/filesystem.hpp>
30 #include "KM_fileio.h"
31 #include "picture_asset.h"
35 using namespace boost;
36 using namespace libdcp;
38 PictureAsset::PictureAsset (
39 list<string> const & files,
41 sigc::signal1<void, float>* progress,
46 : Asset (mxf_path, progress, fps, length)
50 ASDCP::JP2K::CodestreamParser j2k_parser;
51 ASDCP::JP2K::FrameBuffer frame_buffer (4 * Kumu::Megabyte);
52 if (ASDCP_FAILURE (j2k_parser.OpenReadFrame (files.front().c_str(), frame_buffer))) {
54 s << "could not open " << files.front() << " for reading";
55 throw runtime_error (s.str());
58 ASDCP::JP2K::PictureDescriptor picture_desc;
59 j2k_parser.FillPictureDescriptor (picture_desc);
60 picture_desc.EditRate = ASDCP::Rational (_fps, 1);
62 ASDCP::WriterInfo writer_info;
63 fill_writer_info (&writer_info);
65 ASDCP::JP2K::MXFWriter mxf_writer;
66 if (ASDCP_FAILURE (mxf_writer.OpenWrite (_mxf_path.c_str(), writer_info, picture_desc))) {
67 throw runtime_error ("could not open MXF for writing");
71 for (list<string>::const_iterator i = files.begin(); i != files.end(); ++i) {
72 if (ASDCP_FAILURE (j2k_parser.OpenReadFrame (i->c_str(), frame_buffer))) {
74 s << "could not open " << *i << " for reading";
75 throw runtime_error (s.str());
78 /* XXX: passing 0 to WriteFrame ok? */
79 if (ASDCP_FAILURE (mxf_writer.WriteFrame (frame_buffer, 0, 0))) {
80 throw runtime_error ("error in writing video MXF");
84 (*_progress) (0.5 * float (j) / files.size ());
87 if (ASDCP_FAILURE (mxf_writer.Finalize())) {
88 throw runtime_error ("error in finalising video MXF");
91 _digest = make_digest (_mxf_path, _progress);
95 PictureAsset::write_to_cpl (ostream& s) const
97 s << " <MainPicture>\n"
98 << " <Id>urn:uuid:" << _uuid << "</Id>\n"
99 << " <AnnotationText>" << filesystem::path(_mxf_path).filename() << "</AnnotationText>\n"
100 << " <EditRate>" << _fps << " 1</EditRate>\n"
101 << " <IntrinsicDuration>" << _length << "</IntrinsicDuration>\n"
102 << " <EntryPoint>0</EntryPoint>\n"
103 << " <Duration>" << _length << "</Duration>\n"
104 << " <FrameRate>" << _fps << " 1</FrameRate>\n"
105 << " <ScreenAspectRatio>" << _width << " " << _height << "</ScreenAspectRatio>\n"
106 << " </MainPicture>\n";