2 Copyright (C) 2012-2021 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/>.
19 In addition, as a special exception, the copyright holders give
20 permission to link the code of portions of this program with the
21 OpenSSL library under certain conditions as described in each
22 individual source file, and distribute linked combinations
25 You must obey the GNU General Public License in all respects
26 for all of the code used other than OpenSSL. If you modify
27 file(s) with this exception, you may extend this exception to your
28 version of the file(s), but you are not obligated to do so. If you
29 do not wish to do so, delete this exception statement from your
30 version. If you delete this exception statement from all source
31 files in the program, then also delete it here.
35 /** @file src/stereo_picture_frame.cc
36 * @brief StereoPictureFrame class
40 #include "stereo_picture_frame.h"
41 #include "exceptions.h"
44 #include "colour_conversion.h"
45 #include "compose.hpp"
47 #include "crypto_context.h"
48 #include <asdcp/AS_DCP.h>
49 #include <asdcp/KM_fileio.h>
53 using std::shared_ptr;
54 using std::make_shared;
58 StereoPictureFrame::Part::Part (shared_ptr<ASDCP::JP2K::SFrameBuffer> buffer, Eye eye)
66 ASDCP::JP2K::FrameBuffer &
67 StereoPictureFrame::Part::mono () const
69 return _eye == Eye::LEFT ? _buffer->Left : _buffer->Right;
74 StereoPictureFrame::Part::data () const
76 return mono().RoData();
81 StereoPictureFrame::Part::data ()
88 StereoPictureFrame::Part::size () const
94 /** Make a picture frame from a 3D (stereoscopic) asset.
95 * @param reader Reader for the MXF file.
96 * @param n Frame within the asset, not taking EntryPoint into account.
98 StereoPictureFrame::StereoPictureFrame (ASDCP::JP2K::MXFSReader* reader, int n, shared_ptr<DecryptionContext> c)
100 /* XXX: unfortunate guesswork on this buffer size */
101 _buffer = make_shared<ASDCP::JP2K::SFrameBuffer>(4 * Kumu::Megabyte);
103 if (ASDCP_FAILURE (reader->ReadFrame (n, *_buffer, c->context(), c->hmac()))) {
104 boost::throw_exception (ReadError (String::compose ("could not read video frame %1 of %2", n)));
109 StereoPictureFrame::StereoPictureFrame ()
111 _buffer = make_shared<ASDCP::JP2K::SFrameBuffer>(4 * Kumu::Megabyte);
115 /** @param eye Eye to return (EYE_LEFT or EYE_RIGHT).
116 * @param reduce a factor by which to reduce the resolution
117 * of the image, expressed as a power of two (pass 0 for no
120 shared_ptr<OpenJPEGImage>
121 StereoPictureFrame::xyz_image (Eye eye, int reduce) const
125 return decompress_j2k (const_cast<uint8_t*>(_buffer->Left.RoData()), _buffer->Left.Size(), reduce);
127 return decompress_j2k (const_cast<uint8_t*>(_buffer->Right.RoData()), _buffer->Right.Size(), reduce);
134 shared_ptr<StereoPictureFrame::Part>
135 StereoPictureFrame::right () const
137 return make_shared<Part>(_buffer, Eye::RIGHT);
141 shared_ptr<StereoPictureFrame::Part>
142 StereoPictureFrame::left () const
144 return make_shared<Part>(_buffer, Eye::LEFT);