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.
23 #include "xyz_frame.h"
25 using namespace libdcp;
27 /** Construct an XYZFrame, taking ownership of the opj_image_t */
28 XYZFrame::XYZFrame (opj_image_t* image)
31 assert (_opj_image->numcomps == 3);
34 XYZFrame::XYZFrame (Size size)
36 opj_image_cmptparm_t cmptparm[3];
38 for (int i = 0; i < 3; ++i) {
41 cmptparm[i].w = size.width;
42 cmptparm[i].h = size.height;
45 cmptparm[i].prec = 12;
50 /* XXX: is this _SRGB right? */
51 _opj_image = opj_image_create (3, &cmptparm[0], OPJ_CLRSPC_SRGB);
52 if (_opj_image == 0) {
53 throw std::runtime_error ("could not create libopenjpeg image");
58 _opj_image->x1 = size.width;
59 _opj_image->y1 = size.height;
62 XYZFrame::~XYZFrame ()
64 opj_image_destroy (_opj_image);
68 XYZFrame::data (int c) const
70 assert (c >= 0 && c < 3);
71 return _opj_image->comps[c].data;
75 XYZFrame::size () const
77 /* XXX: this may not be right; x0 and y0 can presumably be non-zero */
78 return libdcp::Size (_opj_image->x1, _opj_image->y1);