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 examples/make_dcp.cc
21 * @brief Shows how to make a DCP from some JPEG2000 and WAV files.
27 /* If you are using an installed libdcp, these #includes would need to be changed to
28 #include <libdcp/dcp.h>
29 #include <libdcp/cpl.h>
30 #include <libdcp/mono_picture_asset.h>
36 #include "mono_picture_mxf.h"
37 #include "mono_picture_mxf_writer.h"
38 #include "sound_mxf.h"
44 /* Create a directory to put the DCP in */
45 boost::filesystem::create_directory ("DCP");
47 /* Make a picture MXF. This is a file which combines JPEG2000 files together to make
48 up the video of the DCP. First, create the object, specifying a frame rate of 24 frames
52 boost::shared_ptr<dcp::MonoPictureMXF> picture_mxf (new dcp::MonoPictureMXF (24));
54 /* Start off a write to it */
55 boost::shared_ptr<dcp::MonoPictureMXFWriter> picture_writer = picture_mxf->start_write ("DCP/picture.mxf", false);
57 /* Write 24 frames of the same JPEG2000 file */
58 dcp::File picture ("examples/help.j2c");
59 for (int i = 0; i < 24; ++i) {
60 picture_writer->write (picture.data(), picture.size());
64 picture_writer->finalize ();
66 /* Now create a sound MXF. As before, create an object and a writer.
67 When creating the object we specify the sampling rate (48kHz) and the number of channels (2).
69 boost::shared_ptr<dcp::SoundMXF> sound_mxf (new dcp::SoundMXF (48000, 2));
70 boost::shared_ptr<dcp::SoundMXFWriter> sound_writer = sound_mxf->start_write ("DCP/sound.mxf", false);
72 /* Write some sine waves */
74 audio[0] = new float[48000];
75 audio[1] = new float[48000];
76 for (int i = 0; i < 48000; ++i) {
77 audio[0][i] = sin (2 * M_PI * i * 440 / 48000) * 0.25;
78 audio[1][i] = sin (2 * M_PI * i * 880 / 48000) * 0.25;
80 sound_writer->write (audio, 48000);
85 sound_writer->finalize ();
87 /* Now create a reel */
88 shared_ptr<dcp::Reel> reel (new dcp::Reel ());
90 /* Add picture and sound to it. The zeros are the `entry points', i.e. the first
91 (video) frame from the MXFs that the reel should play.
93 reel->add (picture, 0);
96 /* Make a CPL with this reel */
97 shared_ptr<dcp::CPL> cpl (new dcp::CPL ("My film", dcp::FEATURE));
101 list<shared_ptr<dcp::Asset> > assets;
102 asset.push_back (cpl);
103 asset.push_back (picture);
104 asset.push_back (sound);
105 dcp::write ("DCP", assets);