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
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31 files in the program, then also delete it here.
35 /** @file src/openjpeg_image.cc
36 * @brief OpenJPEGImage class
40 #include "openjpeg_image.h"
41 #include "dcp_assert.h"
49 #ifdef LIBDCP_OPENJPEG1
50 #define OPJ_CLRSPC_SRGB CLRSPC_SRGB
54 OpenJPEGImage::OpenJPEGImage (opj_image_t* image)
57 DCP_ASSERT (_opj_image->numcomps == 3);
61 #ifdef LIBDCP_OPENJPEG1
62 typedef int32_t OPJ_INT32;
63 typedef uint8_t OPJ_BYTE;
67 OpenJPEGImage::OpenJPEGImage (OpenJPEGImage const & other)
69 _opj_image = reinterpret_cast<opj_image_t*>(malloc(sizeof(opj_image_t)));
70 DCP_ASSERT (_opj_image);
71 memcpy (_opj_image, other._opj_image, sizeof (opj_image_t));
73 int const data_size = _opj_image->x1 * _opj_image->y1 * 4;
75 _opj_image->comps = reinterpret_cast<opj_image_comp_t*> (malloc (_opj_image->numcomps * sizeof (opj_image_comp_t)));
76 DCP_ASSERT (_opj_image->comps);
77 memcpy (_opj_image->comps, other._opj_image->comps, _opj_image->numcomps * sizeof (opj_image_comp_t));
78 for (unsigned int i = 0; i < _opj_image->numcomps; ++i) {
79 _opj_image->comps[i].data = reinterpret_cast<OPJ_INT32*> (malloc (data_size));
80 DCP_ASSERT (_opj_image->comps[i].data);
81 memcpy (_opj_image->comps[i].data, other._opj_image->comps[i].data, data_size);
84 _opj_image->icc_profile_buf = reinterpret_cast<OPJ_BYTE*> (malloc (_opj_image->icc_profile_len));
85 DCP_ASSERT (_opj_image->icc_profile_buf);
86 memcpy (_opj_image->icc_profile_buf, other._opj_image->icc_profile_buf, _opj_image->icc_profile_len);
90 OpenJPEGImage::OpenJPEGImage (Size size)
96 OpenJPEGImage::OpenJPEGImage (uint8_t const * data_16, dcp::Size size, int stride)
101 for (int y = 0; y < size.height; ++y) {
102 uint16_t const * p = reinterpret_cast<uint16_t const *> (data_16 + y * stride);
103 for (int x = 0; x < size.width; ++x) {
104 /* Truncate 16-bit to 12-bit */
105 _opj_image->comps[0].data[jn] = *p++ >> 4;
106 _opj_image->comps[1].data[jn] = *p++ >> 4;
107 _opj_image->comps[2].data[jn] = *p++ >> 4;
115 OpenJPEGImage::create (Size size)
117 opj_image_cmptparm_t cmptparm[3];
119 for (int i = 0; i < 3; ++i) {
122 cmptparm[i].w = size.width;
123 cmptparm[i].h = size.height;
126 cmptparm[i].prec = 12;
127 cmptparm[i].bpp = 12;
128 cmptparm[i].sgnd = 0;
131 /* XXX: is this _SRGB right? */
132 _opj_image = opj_image_create (3, &cmptparm[0], OPJ_CLRSPC_SRGB);
133 if (_opj_image == nullptr) {
134 throw std::runtime_error ("could not create libopenjpeg image");
139 _opj_image->x1 = size.width;
140 _opj_image->y1 = size.height;
144 OpenJPEGImage::~OpenJPEGImage ()
146 opj_image_destroy (_opj_image);
151 OpenJPEGImage::data (int c) const
153 DCP_ASSERT (c >= 0 && c < 3);
154 return _opj_image->comps[c].data;
159 OpenJPEGImage::size () const
161 /* XXX: this may not be right; x0 and y0 can presumably be non-zero */
162 return dcp::Size (_opj_image->x1, _opj_image->y1);
167 OpenJPEGImage::precision (int component) const
169 return _opj_image->comps[component].prec;
174 OpenJPEGImage::factor (int component) const
176 return _opj_image->comps[component].factor;
181 OpenJPEGImage::srgb () const
183 return _opj_image->color_space == OPJ_CLRSPC_SRGB;