1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
/*
Copyright (C) 2012-2015 Carl Hetherington <cth@carlh.net>
This file is part of libdcp.
libdcp is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
libdcp is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with libdcp. If not, see <http://www.gnu.org/licenses/>.
In addition, as a special exception, the copyright holders give
permission to link the code of portions of this program with the
OpenSSL library under certain conditions as described in each
individual source file, and distribute linked combinations
including the two.
You must obey the GNU General Public License in all respects
for all of the code used other than OpenSSL. If you modify
file(s) with this exception, you may extend this exception to your
version of the file(s), but you are not obligated to do so. If you
do not wish to do so, delete this exception statement from your
version. If you delete this exception statement from all source
files in the program, then also delete it here.
*/
/** @file src/openjpeg_image.cc
* @brief OpenJPEGImage class.
*/
#include "openjpeg_image.h"
#include "dcp_assert.h"
#include <openjpeg.h>
#include <stdexcept>
using namespace dcp;
#ifdef LIBDCP_OPENJPEG1
#define OPJ_CLRSPC_SRGB CLRSPC_SRGB
#endif
/** Construct an OpenJPEGImage, taking ownership of the opj_image_t */
OpenJPEGImage::OpenJPEGImage (opj_image_t* image)
: _opj_image (image)
{
DCP_ASSERT (_opj_image->numcomps == 3);
}
/** Construct a new OpenJPEGImage with undefined contents.
* @param size Size for the frame in pixels.
*/
OpenJPEGImage::OpenJPEGImage (Size size)
{
opj_image_cmptparm_t cmptparm[3];
for (int i = 0; i < 3; ++i) {
cmptparm[i].dx = 1;
cmptparm[i].dy = 1;
cmptparm[i].w = size.width;
cmptparm[i].h = size.height;
cmptparm[i].x0 = 0;
cmptparm[i].y0 = 0;
cmptparm[i].prec = 12;
cmptparm[i].bpp = 12;
cmptparm[i].sgnd = 0;
}
/* XXX: is this _SRGB right? */
_opj_image = opj_image_create (3, &cmptparm[0], OPJ_CLRSPC_SRGB);
if (_opj_image == 0) {
throw std::runtime_error ("could not create libopenjpeg image");
}
_opj_image->x0 = 0;
_opj_image->y0 = 0;
_opj_image->x1 = size.width;
_opj_image->y1 = size.height;
}
/** OpenJPEGImage destructor */
OpenJPEGImage::~OpenJPEGImage ()
{
opj_image_destroy (_opj_image);
}
/** @param c Component index (0, 1 or 2)
* @return Pointer to the data for component c.
*/
int *
OpenJPEGImage::data (int c) const
{
DCP_ASSERT (c >= 0 && c < 3);
return _opj_image->comps[c].data;
}
/** @return Size of the image in pixels */
dcp::Size
OpenJPEGImage::size () const
{
/* XXX: this may not be right; x0 and y0 can presumably be non-zero */
return dcp::Size (_opj_image->x1, _opj_image->y1);
}
int
OpenJPEGImage::precision (int component) const
{
return _opj_image->comps[component].prec;
}
bool
OpenJPEGImage::srgb () const
{
return _opj_image->color_space == OPJ_CLRSPC_SRGB;
}
|
