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comparison Resources/Orthanc/Core/Images/ImageBuffer.cpp @ 16:ff1e935768e7

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reorganization
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 09 Nov 2016 20:06:52 +0100
parents Framework/Orthanc/Core/Images/ImageBuffer.cpp@4b7e0244881f
children 7207a407bcd8
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15:da2cf3ace87a 16:ff1e935768e7
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 *
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 "ImageBuffer.h"
35
36 #include "../OrthancException.h"
37
38 #include <stdio.h>
39 #include <stdlib.h>
40
41 namespace Orthanc
42 {
43 void ImageBuffer::Allocate()
44 {
45 if (changed_)
46 {
47 Deallocate();
48
49 /*
50 if (forceMinimalPitch_)
51 {
52 TODO: Align pitch and memory buffer to optimal size for SIMD.
53 }
54 */
55
56 pitch_ = GetBytesPerPixel() * width_;
57 size_t size = pitch_ * height_;
58
59 if (size == 0)
60 {
61 buffer_ = NULL;
62 }
63 else
64 {
65 buffer_ = malloc(size);
66 if (buffer_ == NULL)
67 {
68 throw OrthancException(ErrorCode_NotEnoughMemory);
69 }
70 }
71
72 changed_ = false;
73 }
74 }
75
76
77 void ImageBuffer::Deallocate()
78 {
79 if (buffer_ != NULL)
80 {
81 free(buffer_);
82 buffer_ = NULL;
83 changed_ = true;
84 }
85 }
86
87
88 ImageBuffer::ImageBuffer(PixelFormat format,
89 unsigned int width,
90 unsigned int height,
91 bool forceMinimalPitch) :
92 forceMinimalPitch_(forceMinimalPitch)
93 {
94 Initialize();
95 SetWidth(width);
96 SetHeight(height);
97 SetFormat(format);
98 }
99
100
101 void ImageBuffer::Initialize()
102 {
103 changed_ = false;
104 forceMinimalPitch_ = true;
105 format_ = PixelFormat_Grayscale8;
106 width_ = 0;
107 height_ = 0;
108 pitch_ = 0;
109 buffer_ = NULL;
110 }
111
112
113 void ImageBuffer::SetFormat(PixelFormat format)
114 {
115 if (format != format_)
116 {
117 changed_ = true;
118 format_ = format;
119 }
120 }
121
122
123 void ImageBuffer::SetWidth(unsigned int width)
124 {
125 if (width != width_)
126 {
127 changed_ = true;
128 width_ = width;
129 }
130 }
131
132
133 void ImageBuffer::SetHeight(unsigned int height)
134 {
135 if (height != height_)
136 {
137 changed_ = true;
138 height_ = height;
139 }
140 }
141
142
143 ImageAccessor ImageBuffer::GetAccessor()
144 {
145 Allocate();
146
147 ImageAccessor accessor;
148 accessor.AssignWritable(format_, width_, height_, pitch_, buffer_);
149 return accessor;
150 }
151
152
153 ImageAccessor ImageBuffer::GetConstAccessor()
154 {
155 Allocate();
156
157 ImageAccessor accessor;
158 accessor.AssignReadOnly(format_, width_, height_, pitch_, buffer_);
159 return accessor;
160 }
161
162
163 void ImageBuffer::AcquireOwnership(ImageBuffer& other)
164 {
165 // Remove the content of the current image
166 Deallocate();
167
168 // Force the allocation of the other image (if not already
169 // allocated)
170 other.Allocate();
171
172 // Transfer the content of the other image
173 changed_ = false;
174 forceMinimalPitch_ = other.forceMinimalPitch_;
175 format_ = other.format_;
176 width_ = other.width_;
177 height_ = other.height_;
178 pitch_ = other.pitch_;
179 buffer_ = other.buffer_;
180
181 // Force the reinitialization of the other image
182 other.Initialize();
183 }
184 }