Mercurial > hg > orthanc

comparison OrthancFramework/Sources/Images/ImageBuffer.cpp @ 4044:d25f4c0fa160 framework

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
splitting code into OrthancFramework and OrthancServer
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 10 Jun 2020 20:30:34 +0200
parents Core/Images/ImageBuffer.cpp@94f4a18a79cc
children bf7b9edf6b81
comparison
equal deleted inserted replaced
4043:6c6239aec462 4044:d25f4c0fa160
1 /**
2 * Orthanc - A Lightweight, RESTful DICOM Store
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, Belgium
5 * Copyright (C) 2017-2020 Osimis S.A., Belgium
6 *
7 * This program is free software: you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation, either version 3 of the
10 * License, or (at your option) any later version.
11 *
12 * In addition, as a special exception, the copyright holders of this
13 * program give permission to link the code of its release with the
14 * OpenSSL project's "OpenSSL" library (or with modified versions of it
15 * that use the same license as the "OpenSSL" library), and distribute
16 * the linked executables. You must obey the GNU General Public License
17 * in all respects for all of the code used other than "OpenSSL". If you
18 * modify file(s) with this exception, you may extend this exception to
19 * your version of the file(s), but you are not obligated to do so. If
20 * you do not wish to do so, delete this exception statement from your
21 * version. If you delete this exception statement from all source files
22 * in the program, then also delete it here.
23 *
24 * This program is distributed in the hope that it will be useful, but
25 * WITHOUT ANY WARRANTY; without even the implied warranty of
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
27 * General Public License for more details.
28 *
29 * You should have received a copy of the GNU General Public License
30 * along with this program. If not, see <http://www.gnu.org/licenses/>.
31 **/
32
33
34 #include "../PrecompiledHeaders.h"
35 #include "ImageBuffer.h"
36
37 #include "../OrthancException.h"
38
39 #include <stdio.h>
40 #include <stdlib.h>
41
42 namespace Orthanc
43 {
44 void ImageBuffer::Allocate()
45 {
46 if (changed_)
47 {
48 Deallocate();
49
50 /*
51 if (forceMinimalPitch_)
52 {
53 TODO: Align pitch and memory buffer to optimal size for SIMD.
54 }
55 */
56
57 pitch_ = GetBytesPerPixel() * width_;
58 size_t size = pitch_ * height_;
59
60 if (size == 0)
61 {
62 buffer_ = NULL;
63 }
64 else
65 {
66 buffer_ = malloc(size);
67 if (buffer_ == NULL)
68 {
69 throw OrthancException(ErrorCode_NotEnoughMemory,
70 "Failed to allocate an image buffer of size " + boost::lexical_cast<std::string>(width_) + "x" + boost::lexical_cast<std::string>(height_));
71 }
72 }
73
74 changed_ = false;
75 }
76 }
77
78
79 void ImageBuffer::Deallocate()
80 {
81 if (buffer_ != NULL)
82 {
83 free(buffer_);
84 buffer_ = NULL;
85 changed_ = true;
86 }
87 }
88
89
90 ImageBuffer::ImageBuffer(PixelFormat format,
91 unsigned int width,
92 unsigned int height,
93 bool forceMinimalPitch) :
94 forceMinimalPitch_(forceMinimalPitch)
95 {
96 Initialize();
97 SetWidth(width);
98 SetHeight(height);
99 SetFormat(format);
100 }
101
102
103 void ImageBuffer::Initialize()
104 {
105 changed_ = false;
106 forceMinimalPitch_ = true;
107 format_ = PixelFormat_Grayscale8;
108 width_ = 0;
109 height_ = 0;
110 pitch_ = 0;
111 buffer_ = NULL;
112 }
113
114
115 void ImageBuffer::SetFormat(PixelFormat format)
116 {
117 if (format != format_)
118 {
119 changed_ = true;
120 format_ = format;
121 }
122 }
123
124
125 void ImageBuffer::SetWidth(unsigned int width)
126 {
127 if (width != width_)
128 {
129 changed_ = true;
130 width_ = width;
131 }
132 }
133
134
135 void ImageBuffer::SetHeight(unsigned int height)
136 {
137 if (height != height_)
138 {
139 changed_ = true;
140 height_ = height;
141 }
142 }
143
144
145 void ImageBuffer::GetReadOnlyAccessor(ImageAccessor& accessor)
146 {
147 Allocate();
148 accessor.AssignReadOnly(format_, width_, height_, pitch_, buffer_);
149 }
150
151
152 void ImageBuffer::GetWriteableAccessor(ImageAccessor& accessor)
153 {
154 Allocate();
155 accessor.AssignWritable(format_, width_, height_, pitch_, buffer_);
156 }
157
158
159 void ImageBuffer::AcquireOwnership(ImageBuffer& other)
160 {
161 // Remove the content of the current image
162 Deallocate();
163
164 // Force the allocation of the other image (if not already
165 // allocated)
166 other.Allocate();
167
168 // Transfer the content of the other image
169 changed_ = false;
170 forceMinimalPitch_ = other.forceMinimalPitch_;
171 format_ = other.format_;
172 width_ = other.width_;
173 height_ = other.height_;
174 pitch_ = other.pitch_;
175 buffer_ = other.buffer_;
176
177 // Force the reinitialization of the other image
178 other.Initialize();
179 }
180 }