annotate OrthancFramework/Sources/Images/ImageBuffer.cpp @ 5185:0ea402b4d901

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Sat, 25 Mar 2023 12:27:21 +0100
parents 43e613a7756b
children 48b8dae6dc77
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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) 2017-2023 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2023 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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7 *
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8 * This program is free software: you can redistribute it and/or
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9 * modify it under the terms of the GNU Lesser General Public License
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10 * as published by the Free Software Foundation, either version 3 of
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11 * the License, or (at your option) any later version.
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12 *
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13 * This program is distributed in the hope that it will be useful, but
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 * Lesser General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU Lesser General Public
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19 * License along with this program. If not, see
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20 * <http://www.gnu.org/licenses/>.
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21 **/
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22
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23
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24 #include "../PrecompiledHeaders.h"
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25 #include "ImageBuffer.h"
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26
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27 #include "../OrthancException.h"
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28
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29 #include <boost/lexical_cast.hpp>
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30 #include <stdio.h>
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31 #include <stdlib.h>
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32
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33 namespace Orthanc
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34 {
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35 void ImageBuffer::Allocate()
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36 {
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37 if (changed_)
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38 {
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39 Deallocate();
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40
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41 /*
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42 if (forceMinimalPitch_)
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43 {
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44 TODO: Align pitch and memory buffer to optimal size for SIMD.
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45 }
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46 */
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47
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48 pitch_ = GetBytesPerPixel() * width_;
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49 size_t size = pitch_ * height_;
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50
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51 if (size == 0)
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52 {
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53 buffer_ = NULL;
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54 }
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55 else
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56 {
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57 buffer_ = malloc(size);
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58 if (buffer_ == NULL)
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59 {
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60 throw OrthancException(ErrorCode_NotEnoughMemory,
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61 "Failed to allocate an image buffer of size " + boost::lexical_cast<std::string>(width_) + "x" + boost::lexical_cast<std::string>(height_));
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62 }
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63 }
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64
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65 changed_ = false;
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66 }
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67 }
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68
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69
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70 void ImageBuffer::Deallocate()
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71 {
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72 if (buffer_ != NULL)
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73 {
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74 free(buffer_);
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75 buffer_ = NULL;
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76 changed_ = true;
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77 }
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78 }
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79
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80
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81 ImageBuffer::ImageBuffer(PixelFormat format,
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82 unsigned int width,
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83 unsigned int height,
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84 bool forceMinimalPitch) :
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85 forceMinimalPitch_(forceMinimalPitch)
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86 {
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87 Initialize();
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88 SetWidth(width);
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89 SetHeight(height);
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90 SetFormat(format);
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91 }
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92
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93 ImageBuffer::ImageBuffer()
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94 {
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95 Initialize();
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96 }
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97
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98 ImageBuffer::~ImageBuffer()
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99 {
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100 Deallocate();
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101 }
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102
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103 PixelFormat ImageBuffer::GetFormat() const
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104 {
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105 return format_;
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106 }
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107
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108
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109 void ImageBuffer::Initialize()
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110 {
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111 changed_ = false;
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112 forceMinimalPitch_ = true;
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113 format_ = PixelFormat_Grayscale8;
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114 width_ = 0;
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115 height_ = 0;
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116 pitch_ = 0;
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117 buffer_ = NULL;
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118 }
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119
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120
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121 void ImageBuffer::SetFormat(PixelFormat format)
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122 {
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123 if (format != format_)
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124 {
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125 changed_ = true;
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126 format_ = format;
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127 }
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128 }
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129
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130 unsigned int ImageBuffer::GetWidth() const
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131 {
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132 return width_;
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133 }
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134
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135
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136 void ImageBuffer::SetWidth(unsigned int width)
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137 {
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138 if (width != width_)
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139 {
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140 changed_ = true;
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141 width_ = width;
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142 }
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143 }
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144
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145 unsigned int ImageBuffer::GetHeight() const
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146 {
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147 return height_;
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148 }
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149
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150
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151 void ImageBuffer::SetHeight(unsigned int height)
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152 {
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153 if (height != height_)
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154 {
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155 changed_ = true;
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156 height_ = height;
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157 }
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158 }
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159
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160 unsigned int ImageBuffer::GetBytesPerPixel() const
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161 {
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162 return ::Orthanc::GetBytesPerPixel(format_);
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163 }
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164
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165
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166 void ImageBuffer::GetReadOnlyAccessor(ImageAccessor& accessor)
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167 {
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168 Allocate();
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169 accessor.AssignReadOnly(format_, width_, height_, pitch_, buffer_);
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170 }
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171
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172
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173 void ImageBuffer::GetWriteableAccessor(ImageAccessor& accessor)
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174 {
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175 Allocate();
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176 accessor.AssignWritable(format_, width_, height_, pitch_, buffer_);
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177 }
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178
4300
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179 bool ImageBuffer::IsMinimalPitchForced() const
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180 {
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181 return forceMinimalPitch_;
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182 }
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183
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184
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185 void ImageBuffer::AcquireOwnership(ImageBuffer& other)
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186 {
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187 // Remove the content of the current image
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188 Deallocate();
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189
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190 // Force the allocation of the other image (if not already
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191 // allocated)
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192 other.Allocate();
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193
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194 // Transfer the content of the other image
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195 changed_ = false;
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196 forceMinimalPitch_ = other.forceMinimalPitch_;
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197 format_ = other.format_;
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198 width_ = other.width_;
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199 height_ = other.height_;
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200 pitch_ = other.pitch_;
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201 buffer_ = other.buffer_;
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202
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203 // Force the reinitialization of the other image
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204 other.Initialize();
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205 }
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206 }