Mercurial > hg > orthanc-stone
annotate Resources/Orthanc/Core/Images/ImageBuffer.cpp @ 202:e7f90aba3c97
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Mon, 26 Mar 2018 18:10:34 +0200 |
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rev | line source |
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1 /** |
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2 * Orthanc - A Lightweight, RESTful DICOM Store |
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
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4 * Department, University Hospital of Liege, Belgium |
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5 * Copyright (C) 2017-2018 Osimis S.A., Belgium |
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6 * |
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7 * This program is free software: you can redistribute it and/or |
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8 * modify it under the terms of the GNU General Public License as |
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9 * published by the Free Software Foundation, either version 3 of the |
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10 * License, or (at your option) any later version. |
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11 * |
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12 * In addition, as a special exception, the copyright holders of this |
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13 * program give permission to link the code of its release with the |
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14 * OpenSSL project's "OpenSSL" library (or with modified versions of it |
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15 * that use the same license as the "OpenSSL" library), and distribute |
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16 * the linked executables. You must obey the GNU General Public License |
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17 * in all respects for all of the code used other than "OpenSSL". If you |
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18 * modify file(s) with this exception, you may extend this exception to |
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19 * your version of the file(s), but you are not obligated to do so. If |
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20 * you do not wish to do so, delete this exception statement from your |
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21 * version. If you delete this exception statement from all source files |
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22 * in the program, then also delete it here. |
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23 * |
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24 * This program is distributed in the hope that it will be useful, but |
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25 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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27 * General Public License for more details. |
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28 * |
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29 * You should have received a copy of the GNU General Public License |
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30 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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31 **/ |
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32 |
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33 |
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34 #include "../PrecompiledHeaders.h" |
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35 #include "ImageBuffer.h" |
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36 |
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37 #include "../OrthancException.h" |
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38 |
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39 #include <stdio.h> |
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40 #include <stdlib.h> |
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41 |
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42 namespace Orthanc |
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43 { |
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44 void ImageBuffer::Allocate() |
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45 { |
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46 if (changed_) |
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47 { |
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48 Deallocate(); |
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49 |
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50 /* |
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51 if (forceMinimalPitch_) |
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52 { |
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53 TODO: Align pitch and memory buffer to optimal size for SIMD. |
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54 } |
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55 */ |
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56 |
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57 pitch_ = GetBytesPerPixel() * width_; |
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58 size_t size = pitch_ * height_; |
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59 |
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60 if (size == 0) |
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61 { |
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62 buffer_ = NULL; |
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63 } |
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64 else |
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65 { |
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66 buffer_ = malloc(size); |
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67 if (buffer_ == NULL) |
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68 { |
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69 throw OrthancException(ErrorCode_NotEnoughMemory); |
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70 } |
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71 } |
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72 |
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73 changed_ = false; |
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74 } |
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75 } |
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76 |
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77 |
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78 void ImageBuffer::Deallocate() |
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79 { |
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80 if (buffer_ != NULL) |
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81 { |
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82 free(buffer_); |
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83 buffer_ = NULL; |
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84 changed_ = true; |
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85 } |
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86 } |
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87 |
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88 |
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89 ImageBuffer::ImageBuffer(PixelFormat format, |
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90 unsigned int width, |
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91 unsigned int height, |
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92 bool forceMinimalPitch) : |
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93 forceMinimalPitch_(forceMinimalPitch) |
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94 { |
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95 Initialize(); |
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96 SetWidth(width); |
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97 SetHeight(height); |
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98 SetFormat(format); |
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99 } |
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100 |
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101 |
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102 void ImageBuffer::Initialize() |
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103 { |
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104 changed_ = false; |
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105 forceMinimalPitch_ = true; |
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106 format_ = PixelFormat_Grayscale8; |
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107 width_ = 0; |
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108 height_ = 0; |
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109 pitch_ = 0; |
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110 buffer_ = NULL; |
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111 } |
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112 |
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113 |
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114 void ImageBuffer::SetFormat(PixelFormat format) |
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115 { |
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116 if (format != format_) |
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117 { |
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118 changed_ = true; |
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119 format_ = format; |
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120 } |
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121 } |
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122 |
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123 |
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124 void ImageBuffer::SetWidth(unsigned int width) |
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125 { |
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126 if (width != width_) |
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127 { |
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128 changed_ = true; |
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129 width_ = width; |
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130 } |
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131 } |
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132 |
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133 |
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134 void ImageBuffer::SetHeight(unsigned int height) |
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135 { |
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136 if (height != height_) |
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137 { |
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138 changed_ = true; |
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139 height_ = height; |
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140 } |
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141 } |
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142 |
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143 |
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144 ImageAccessor ImageBuffer::GetAccessor() |
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145 { |
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146 Allocate(); |
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147 |
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148 ImageAccessor accessor; |
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149 accessor.AssignWritable(format_, width_, height_, pitch_, buffer_); |
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150 return accessor; |
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151 } |
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152 |
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153 |
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154 ImageAccessor ImageBuffer::GetConstAccessor() |
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155 { |
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156 Allocate(); |
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157 |
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158 ImageAccessor accessor; |
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159 accessor.AssignReadOnly(format_, width_, height_, pitch_, buffer_); |
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160 return accessor; |
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161 } |
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162 |
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163 |
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164 void ImageBuffer::AcquireOwnership(ImageBuffer& other) |
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165 { |
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166 // Remove the content of the current image |
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167 Deallocate(); |
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168 |
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169 // Force the allocation of the other image (if not already |
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170 // allocated) |
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171 other.Allocate(); |
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172 |
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173 // Transfer the content of the other image |
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174 changed_ = false; |
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175 forceMinimalPitch_ = other.forceMinimalPitch_; |
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176 format_ = other.format_; |
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177 width_ = other.width_; |
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178 height_ = other.height_; |
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179 pitch_ = other.pitch_; |
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180 buffer_ = other.buffer_; |
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181 |
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182 // Force the reinitialization of the other image |
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183 other.Initialize(); |
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184 } |
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185 } |