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)
91 /** @param data_16 XYZ/RGB image data in packed 16:16:16, 48bpp with
92 * the 2-byte value for each component stored as little-endian.
94 OpenJPEGImage::OpenJPEGImage (uint8_t const * data_16, dcp::Size size, int stride)
99 for (int y = 0; y < size.height; ++y) {
100 uint16_t const * p = reinterpret_cast<uint16_t const *> (data_16 + y * stride);
101 for (int x = 0; x < size.width; ++x) {
102 /* Truncate 16-bit to 12-bit */
103 _opj_image->comps[0].data[jn] = *p++ >> 4;
104 _opj_image->comps[1].data[jn] = *p++ >> 4;
105 _opj_image->comps[2].data[jn] = *p++ >> 4;
112 OpenJPEGImage::create (Size size)
114 opj_image_cmptparm_t cmptparm[3];
116 for (int i = 0; i < 3; ++i) {
119 cmptparm[i].w = size.width;
120 cmptparm[i].h = size.height;
123 cmptparm[i].prec = 12;
124 cmptparm[i].bpp = 12;
125 cmptparm[i].sgnd = 0;
128 /* XXX: is this _SRGB right? */
129 _opj_image = opj_image_create (3, &cmptparm[0], OPJ_CLRSPC_SRGB);
130 if (_opj_image == 0) {
131 throw std::runtime_error ("could not create libopenjpeg image");
136 _opj_image->x1 = size.width;
137 _opj_image->y1 = size.height;
140 /** OpenJPEGImage destructor */
141 OpenJPEGImage::~OpenJPEGImage ()
143 opj_image_destroy (_opj_image);
146 /** @param c Component index (0, 1 or 2)
147 * @return Pointer to the data for component c.
150 OpenJPEGImage::data (int c) const
152 DCP_ASSERT (c >= 0 && c < 3);
153 return _opj_image->comps[c].data;
156 /** @return Size of the image in pixels */
158 OpenJPEGImage::size () const
160 /* XXX: this may not be right; x0 and y0 can presumably be non-zero */
161 return dcp::Size (_opj_image->x1, _opj_image->y1);
165 OpenJPEGImage::precision (int component) const
167 return _opj_image->comps[component].prec;
171 OpenJPEGImage::factor (int component) const
173 return _opj_image->comps[component].factor;
177 OpenJPEGImage::srgb () const
179 return _opj_image->color_space == OPJ_CLRSPC_SRGB;