Mercurial > hg > orthanc
annotate Core/ImageFormats/ImageBuffer.cpp @ 1104:354dfbd1898b Orthanc-0.8.2
Orthanc-0.8.2
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Thu, 07 Aug 2014 13:23:24 +0200 |
parents | 3c0d0836f704 |
children | 6e7e5ed91c2d |
rev | line source |
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801 | 1 /** |
2 * Orthanc - A Lightweight, RESTful DICOM Store | |
3 * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege, | |
4 * 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 | |
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33 #include "../PrecompiledHeaders.h" |
801 | 34 #include "ImageBuffer.h" |
35 | |
863 | 36 #include "../OrthancException.h" |
37 | |
860 | 38 #include <stdio.h> |
863 | 39 #include <stdlib.h> |
860 | 40 |
801 | 41 namespace Orthanc |
42 { | |
43 void ImageBuffer::Allocate() | |
44 { | |
45 if (changed_) | |
46 { | |
863 | 47 Deallocate(); |
48 | |
844 | 49 /* |
50 if (forceMinimalPitch_) | |
51 { | |
52 TODO: Align pitch and memory buffer to optimal size for SIMD. | |
53 } | |
54 */ | |
55 | |
801 | 56 pitch_ = GetBytesPerPixel() * width_; |
863 | 57 size_t size = pitch_ * height_; |
801 | 58 |
863 | 59 if (size == 0) |
801 | 60 { |
863 | 61 buffer_ = NULL; |
801 | 62 } |
63 else | |
64 { | |
863 | 65 buffer_ = malloc(size); |
66 if (buffer_ == NULL) | |
67 { | |
68 throw OrthancException(ErrorCode_NotEnoughMemory); | |
69 } | |
801 | 70 } |
71 | |
72 changed_ = false; | |
73 } | |
74 } | |
75 | |
76 | |
863 | 77 void ImageBuffer::Deallocate() |
78 { | |
79 if (buffer_ != NULL) | |
80 { | |
81 free(buffer_); | |
82 buffer_ = NULL; | |
83 changed_ = true; | |
84 } | |
85 } | |
86 | |
87 | |
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88 ImageBuffer::ImageBuffer(unsigned int width, |
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89 unsigned int height, |
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90 PixelFormat format) |
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91 { |
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92 Initialize(); |
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93 SetWidth(width); |
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94 SetHeight(height); |
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95 SetFormat(format); |
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96 } |
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97 |
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98 |
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99 void ImageBuffer::Initialize() |
801 | 100 { |
101 changed_ = false; | |
844 | 102 forceMinimalPitch_ = true; |
801 | 103 format_ = PixelFormat_Grayscale8; |
104 width_ = 0; | |
105 height_ = 0; | |
106 pitch_ = 0; | |
107 buffer_ = NULL; | |
108 } | |
109 | |
110 | |
111 void ImageBuffer::SetFormat(PixelFormat format) | |
112 { | |
863 | 113 if (format != format_) |
114 { | |
115 changed_ = true; | |
116 format_ = format; | |
117 } | |
801 | 118 } |
119 | |
120 | |
121 void ImageBuffer::SetWidth(unsigned int width) | |
122 { | |
863 | 123 if (width != width_) |
124 { | |
125 changed_ = true; | |
126 width_ = width; | |
127 } | |
801 | 128 } |
129 | |
130 | |
131 void ImageBuffer::SetHeight(unsigned int height) | |
132 { | |
863 | 133 if (height != height_) |
134 { | |
135 changed_ = true; | |
136 height_ = height; | |
137 } | |
801 | 138 } |
139 | |
140 | |
141 ImageAccessor ImageBuffer::GetAccessor() | |
142 { | |
143 Allocate(); | |
144 | |
145 ImageAccessor accessor; | |
146 accessor.AssignWritable(format_, width_, height_, pitch_, buffer_); | |
147 return accessor; | |
148 } | |
149 | |
150 | |
151 ImageAccessor ImageBuffer::GetConstAccessor() | |
152 { | |
153 Allocate(); | |
154 | |
155 ImageAccessor accessor; | |
156 accessor.AssignReadOnly(format_, width_, height_, pitch_, buffer_); | |
157 return accessor; | |
158 } | |
844 | 159 |
160 | |
161 void ImageBuffer::SetMinimalPitchForced(bool force) | |
162 { | |
863 | 163 if (force != forceMinimalPitch_) |
164 { | |
165 changed_ = true; | |
166 forceMinimalPitch_ = force; | |
167 } | |
168 } | |
169 | |
170 | |
171 void ImageBuffer::AcquireOwnership(ImageBuffer& other) | |
172 { | |
173 // Remove the content of the current image | |
174 Deallocate(); | |
175 | |
176 // Force the allocation of the other image (if not already | |
177 // allocated) | |
178 other.Allocate(); | |
179 | |
180 // Transfer the content of the other image | |
181 changed_ = false; | |
182 forceMinimalPitch_ = other.forceMinimalPitch_; | |
183 format_ = other.format_; | |
184 width_ = other.width_; | |
185 height_ = other.height_; | |
186 pitch_ = other.pitch_; | |
187 buffer_ = other.buffer_; | |
188 | |
189 // Force the reinitialization of the other image | |
190 other.Initialize(); | |
844 | 191 } |
801 | 192 } |