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.
22 #include "xyz_frame.h"
24 using namespace libdcp;
26 /** Construct an XYZFrame, taking ownership of the opj_image_t */
27 XYZFrame::XYZFrame (opj_image_t* image)
30 assert (_opj_image->numcomps == 3);
33 XYZFrame::XYZFrame (Size size)
35 opj_image_cmptparm_t cmptparm[3];
37 for (int i = 0; i < 3; ++i) {
40 cmptparm[i].w = size.width;
41 cmptparm[i].h = size.height;
44 cmptparm[i].prec = 12;
49 /* XXX: is this _SRGB right? */
50 _opj_image = opj_image_create (3, &cmptparm[0], OPJ_CLRSPC_SRGB);
51 if (_opj_image == 0) {
52 throw std::runtime_error ("could not create libopenjpeg image");
57 _opj_image->x1 = size.width;
58 _opj_image->y1 = size.height;
61 XYZFrame::~XYZFrame ()
63 opj_image_destroy (_opj_image);
67 XYZFrame::data (int c) const
69 assert (c >= 0 && c < 3);
70 return _opj_image->comps[c].data;
74 XYZFrame::size () const
76 /* XXX: this may not be right; x0 and y0 can presumably be non-zero */
77 return libdcp::Size (_opj_image->x1, _opj_image->y1);