2 Copyright (C) 2012-2015 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 /** @file src/openjpeg_image.cc
35 * @brief OpenJPEGImage class.
38 #include "openjpeg_image.h"
39 #include "dcp_assert.h"
45 #ifdef LIBDCP_OPENJPEG1
46 #define OPJ_CLRSPC_SRGB CLRSPC_SRGB
49 /** Construct an OpenJPEGImage, taking ownership of the opj_image_t */
50 OpenJPEGImage::OpenJPEGImage (opj_image_t* image)
53 DCP_ASSERT (_opj_image->numcomps == 3);
56 #ifdef LIBDCP_OPENJPEG1
57 typedef int32_t OPJ_INT32;
58 typedef uint8_t OPJ_BYTE;
61 OpenJPEGImage::OpenJPEGImage (OpenJPEGImage const & other)
63 _opj_image = reinterpret_cast<opj_image_t*> (malloc (sizeof (opj_image_t)));
64 DCP_ASSERT (_opj_image);
65 memcpy (_opj_image, other._opj_image, sizeof (opj_image_t));
67 int const data_size = _opj_image->x1 * _opj_image->y1 * 4;
69 _opj_image->comps = reinterpret_cast<opj_image_comp_t*> (malloc (_opj_image->numcomps * sizeof (opj_image_comp_t)));
70 DCP_ASSERT (_opj_image->comps);
71 memcpy (_opj_image->comps, other._opj_image->comps, _opj_image->numcomps * sizeof (opj_image_comp_t));
72 for (unsigned int i = 0; i < _opj_image->numcomps; ++i) {
73 _opj_image->comps[i].data = reinterpret_cast<OPJ_INT32*> (malloc (data_size));
74 DCP_ASSERT (_opj_image->comps[i].data);
75 memcpy (_opj_image->comps[i].data, other._opj_image->comps[i].data, data_size);
78 _opj_image->icc_profile_buf = reinterpret_cast<OPJ_BYTE*> (malloc (_opj_image->icc_profile_len));
79 DCP_ASSERT (_opj_image->icc_profile_buf);
80 memcpy (_opj_image->icc_profile_buf, other._opj_image->icc_profile_buf, _opj_image->icc_profile_len);
83 /** Construct a new OpenJPEGImage with undefined contents.
84 * @param size Size for the frame in pixels.
86 OpenJPEGImage::OpenJPEGImage (Size size)
88 opj_image_cmptparm_t cmptparm[3];
90 for (int i = 0; i < 3; ++i) {
93 cmptparm[i].w = size.width;
94 cmptparm[i].h = size.height;
97 cmptparm[i].prec = 12;
102 /* XXX: is this _SRGB right? */
103 _opj_image = opj_image_create (3, &cmptparm[0], OPJ_CLRSPC_SRGB);
104 if (_opj_image == 0) {
105 throw std::runtime_error ("could not create libopenjpeg image");
110 _opj_image->x1 = size.width;
111 _opj_image->y1 = size.height;
114 /** OpenJPEGImage destructor */
115 OpenJPEGImage::~OpenJPEGImage ()
117 opj_image_destroy (_opj_image);
120 /** @param c Component index (0, 1 or 2)
121 * @return Pointer to the data for component c.
124 OpenJPEGImage::data (int c) const
126 DCP_ASSERT (c >= 0 && c < 3);
127 return _opj_image->comps[c].data;
130 /** @return Size of the image in pixels */
132 OpenJPEGImage::size () const
134 /* XXX: this may not be right; x0 and y0 can presumably be non-zero */
135 return dcp::Size (_opj_image->x1, _opj_image->y1);
139 OpenJPEGImage::precision (int component) const
141 return _opj_image->comps[component].prec;
145 OpenJPEGImage::factor (int component) const
147 return _opj_image->comps[component].factor;
151 OpenJPEGImage::srgb () const
153 return _opj_image->color_space == OPJ_CLRSPC_SRGB;