2 Copyright (C) 2012-2014 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.
34 #include "stereo_picture_frame.h"
35 #include "exceptions.h"
38 #include "colour_conversion.h"
39 #include "compose.hpp"
41 #include "crypto_context.h"
42 #include <asdcp/AS_DCP.h>
43 #include <asdcp/KM_fileio.h>
46 using std::shared_ptr;
50 StereoPictureFrame::Part::Part (shared_ptr<ASDCP::JP2K::SFrameBuffer> buffer, Eye eye)
58 ASDCP::JP2K::FrameBuffer &
59 StereoPictureFrame::Part::mono () const
61 return _eye == EYE_LEFT ? _buffer->Left : _buffer->Right;
66 StereoPictureFrame::Part::data () const
68 return mono().RoData();
73 StereoPictureFrame::Part::data ()
80 StereoPictureFrame::Part::size () const
86 /** Make a picture frame from a 3D (stereoscopic) asset.
87 * @param reader Reader for the MXF file.
88 * @param n Frame within the asset, not taking EntryPoint into account.
90 StereoPictureFrame::StereoPictureFrame (ASDCP::JP2K::MXFSReader* reader, int n, shared_ptr<DecryptionContext> c)
92 /* XXX: unfortunate guesswork on this buffer size */
93 _buffer.reset(new ASDCP::JP2K::SFrameBuffer(4 * Kumu::Megabyte));
95 if (ASDCP_FAILURE (reader->ReadFrame (n, *_buffer, c->context(), c->hmac()))) {
96 boost::throw_exception (ReadError (String::compose ("could not read video frame %1 of %2", n)));
100 StereoPictureFrame::StereoPictureFrame ()
102 _buffer.reset(new ASDCP::JP2K::SFrameBuffer(4 * Kumu::Megabyte));
106 /** @param eye Eye to return (EYE_LEFT or EYE_RIGHT).
107 * @param reduce a factor by which to reduce the resolution
108 * of the image, expressed as a power of two (pass 0 for no
111 shared_ptr<OpenJPEGImage>
112 StereoPictureFrame::xyz_image (Eye eye, int reduce) const
116 return decompress_j2k (const_cast<uint8_t*> (_buffer->Left.RoData()), _buffer->Left.Size(), reduce);
118 return decompress_j2k (const_cast<uint8_t*> (_buffer->Right.RoData()), _buffer->Right.Size(), reduce);
121 return shared_ptr<OpenJPEGImage> ();
125 shared_ptr<StereoPictureFrame::Part>
126 StereoPictureFrame::right () const
128 return shared_ptr<Part>(new Part(_buffer, EYE_RIGHT));
132 shared_ptr<StereoPictureFrame::Part>
133 StereoPictureFrame::left () const
135 return shared_ptr<Part>(new Part(_buffer, EYE_LEFT));