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comparison Resources/Orthanc/Core/Images/ImageBuffer.cpp @ 200:03afbee0cc7b

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integration of Orthanc core into Stone
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 23 Mar 2018 11:04:03 +0100
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199:dabe9982fca3 200:03afbee0cc7b
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) 2017-2018 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 }
71 }
72
73 changed_ = false;
74 }
75 }
76
77
78 void ImageBuffer::Deallocate()
79 {
80 if (buffer_ != NULL)
81 {
82 free(buffer_);
83 buffer_ = NULL;
84 changed_ = true;
85 }
86 }
87
88
89 ImageBuffer::ImageBuffer(PixelFormat format,
90 unsigned int width,
91 unsigned int height,
92 bool forceMinimalPitch) :
93 forceMinimalPitch_(forceMinimalPitch)
94 {
95 Initialize();
96 SetWidth(width);
97 SetHeight(height);
98 SetFormat(format);
99 }
100
101
102 void ImageBuffer::Initialize()
103 {
104 changed_ = false;
105 forceMinimalPitch_ = true;
106 format_ = PixelFormat_Grayscale8;
107 width_ = 0;
108 height_ = 0;
109 pitch_ = 0;
110 buffer_ = NULL;
111 }
112
113
114 void ImageBuffer::SetFormat(PixelFormat format)
115 {
116 if (format != format_)
117 {
118 changed_ = true;
119 format_ = format;
120 }
121 }
122
123
124 void ImageBuffer::SetWidth(unsigned int width)
125 {
126 if (width != width_)
127 {
128 changed_ = true;
129 width_ = width;
130 }
131 }
132
133
134 void ImageBuffer::SetHeight(unsigned int height)
135 {
136 if (height != height_)
137 {
138 changed_ = true;
139 height_ = height;
140 }
141 }
142
143
144 ImageAccessor ImageBuffer::GetAccessor()
145 {
146 Allocate();
147
148 ImageAccessor accessor;
149 accessor.AssignWritable(format_, width_, height_, pitch_, buffer_);
150 return accessor;
151 }
152
153
154 ImageAccessor ImageBuffer::GetConstAccessor()
155 {
156 Allocate();
157
158 ImageAccessor accessor;
159 accessor.AssignReadOnly(format_, width_, height_, pitch_, buffer_);
160 return accessor;
161 }
162
163
164 void ImageBuffer::AcquireOwnership(ImageBuffer& other)
165 {
166 // Remove the content of the current image
167 Deallocate();
168
169 // Force the allocation of the other image (if not already
170 // allocated)
171 other.Allocate();
172
173 // Transfer the content of the other image
174 changed_ = false;
175 forceMinimalPitch_ = other.forceMinimalPitch_;
176 format_ = other.format_;
177 width_ = other.width_;
178 height_ = other.height_;
179 pitch_ = other.pitch_;
180 buffer_ = other.buffer_;
181
182 // Force the reinitialization of the other image
183 other.Initialize();
184 }
185 }