Mercurial > hg > orthanc-webviewer

comparison Orthanc/ImageFormats/ImageAccessor.cpp @ 0:02f7a0400a91

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initial commit
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 25 Feb 2015 13:45:35 +0100
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children 7a0af291cc90
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-1:000000000000 0:02f7a0400a91
1 /**
2 * Orthanc - A Lightweight, RESTful DICOM Store
3 * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, Belgium
5 *
6 * This program is free software: you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation, either version 3 of the
9 * License, or (at your option) any later version.
10 *
11 * In addition, as a special exception, the copyright holders of this
12 * program give permission to link the code of its release with the
13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
14 * that use the same license as the "OpenSSL" library), and distribute
15 * the linked executables. You must obey the GNU General Public License
16 * in all respects for all of the code used other than "OpenSSL". If you
17 * modify file(s) with this exception, you may extend this exception to
18 * your version of the file(s), but you are not obligated to do so. If
19 * you do not wish to do so, delete this exception statement from your
20 * version. If you delete this exception statement from all source files
21 * in the program, then also delete it here.
22 *
23 * This program is distributed in the hope that it will be useful, but
24 * WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
26 * General Public License for more details.
27 *
28 * You should have received a copy of the GNU General Public License
29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
30 **/
31
32
33 #include "../PrecompiledHeaders.h"
34 #include "ImageAccessor.h"
35
36 #include "../OrthancException.h"
37
38 #include <stdint.h>
39 #include <cassert>
40 #include <boost/lexical_cast.hpp>
41
42 namespace Orthanc
43 {
44 void* ImageAccessor::GetBuffer() const
45 {
46 if (readOnly_)
47 {
48 throw OrthancException(ErrorCode_ReadOnly);
49 }
50
51 return buffer_;
52 }
53
54
55 const void* ImageAccessor::GetConstRow(unsigned int y) const
56 {
57 if (buffer_ != NULL)
58 {
59 return reinterpret_cast<const uint8_t*>(buffer_) + y * pitch_;
60 }
61 else
62 {
63 return NULL;
64 }
65 }
66
67
68 void* ImageAccessor::GetRow(unsigned int y) const
69 {
70 if (readOnly_)
71 {
72 throw OrthancException(ErrorCode_ReadOnly);
73 }
74
75 if (buffer_ != NULL)
76 {
77 return reinterpret_cast<uint8_t*>(buffer_) + y * pitch_;
78 }
79 else
80 {
81 return NULL;
82 }
83 }
84
85
86 void ImageAccessor::AssignEmpty(PixelFormat format)
87 {
88 readOnly_ = false;
89 format_ = format;
90 width_ = 0;
91 height_ = 0;
92 pitch_ = 0;
93 buffer_ = NULL;
94 }
95
96
97 void ImageAccessor::AssignReadOnly(PixelFormat format,
98 unsigned int width,
99 unsigned int height,
100 unsigned int pitch,
101 const void *buffer)
102 {
103 readOnly_ = true;
104 format_ = format;
105 width_ = width;
106 height_ = height;
107 pitch_ = pitch;
108 buffer_ = const_cast<void*>(buffer);
109
110 assert(GetBytesPerPixel() * width_ <= pitch_);
111 }
112
113
114 void ImageAccessor::AssignWritable(PixelFormat format,
115 unsigned int width,
116 unsigned int height,
117 unsigned int pitch,
118 void *buffer)
119 {
120 readOnly_ = false;
121 format_ = format;
122 width_ = width;
123 height_ = height;
124 pitch_ = pitch;
125 buffer_ = buffer;
126
127 assert(GetBytesPerPixel() * width_ <= pitch_);
128 }
129 }