Mercurial > hg > orthanc

annotate Core/ImageFormats/ImageAccessor.cpp @ 1461:d659b6a4e736 Orthanc-0.9.1

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 02 Jul 2015 16:50:33 +0200
parents 704de8c30ff5
children f967bdf8534e
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU General Public License as
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8 * published by the Free Software Foundation, either version 3 of the
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9 * License, or (at your option) any later version.
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10 *
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11 * In addition, as a special exception, the copyright holders of this
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12 * program give permission to link the code of its release with the
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13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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14 * that use the same license as the "OpenSSL" library), and distribute
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15 * the linked executables. You must obey the GNU General Public License
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16 * in all respects for all of the code used other than "OpenSSL". If you
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17 * modify file(s) with this exception, you may extend this exception to
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18 * your version of the file(s), but you are not obligated to do so. If
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19 * you do not wish to do so, delete this exception statement from your
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20 * version. If you delete this exception statement from all source files
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21 * in the program, then also delete it here.
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22 *
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23 * This program is distributed in the hope that it will be useful, but
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24 * WITHOUT ANY WARRANTY; without even the implied warranty of
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25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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26 * General Public License for more details.
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27 *
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28 * You should have received a copy of the GNU General Public License
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29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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30 **/
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31
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32
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33 #include "../PrecompiledHeaders.h"
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34 #include "ImageAccessor.h"
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35
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36 #include "../OrthancException.h"
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37 #include "../ChunkedBuffer.h"
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38
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39 #include <stdint.h>
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40 #include <cassert>
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41 #include <boost/lexical_cast.hpp>
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42
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43 #if HAVE_GOOGLE_LOG == 1
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44 #include <glog/logging.h>
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45 #endif
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46
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47
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48 namespace Orthanc
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49 {
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50 template <typename PixelType>
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51 static void ToMatlabStringInternal(ChunkedBuffer& target,
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52 const ImageAccessor& source)
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53 {
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54 target.AddChunk("double([ ");
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55
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56 for (unsigned int y = 0; y < source.GetHeight(); y++)
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57 {
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58 const PixelType* p = reinterpret_cast<const PixelType*>(source.GetConstRow(y));
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59
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60 std::string s;
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61 if (y > 0)
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62 {
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63 s = "; ";
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64 }
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65
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66 s.reserve(source.GetWidth() * 8);
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67
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68 for (unsigned int x = 0; x < source.GetWidth(); x++, p++)
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69 {
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70 s += boost::lexical_cast<std::string>(static_cast<int>(*p)) + " ";
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71 }
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72
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73 target.AddChunk(s);
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74 }
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75
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76 target.AddChunk("])");
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77 }
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78
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79
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80 static void RGB24ToMatlabString(ChunkedBuffer& target,
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81 const ImageAccessor& source)
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82 {
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83 assert(source.GetFormat() == PixelFormat_RGB24);
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84
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85 target.AddChunk("double(permute(reshape([ ");
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86
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87 for (unsigned int y = 0; y < source.GetHeight(); y++)
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88 {
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89 const uint8_t* p = reinterpret_cast<const uint8_t*>(source.GetConstRow(y));
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90
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91 std::string s;
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92 s.reserve(source.GetWidth() * 3 * 8);
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93
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94 for (unsigned int x = 0; x < 3 * source.GetWidth(); x++, p++)
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95 {
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96 s += boost::lexical_cast<std::string>(static_cast<int>(*p)) + " ";
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97 }
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98
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99 target.AddChunk(s);
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100 }
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101
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102 target.AddChunk("], [ 3 " + boost::lexical_cast<std::string>(source.GetHeight()) +
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103 " " + boost::lexical_cast<std::string>(source.GetWidth()) + " ]), [ 3 2 1 ]))");
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104 }
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105
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106
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107 void* ImageAccessor::GetBuffer() const
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108 {
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109 if (readOnly_)
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110 {
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111 #if HAVE_GOOGLE_LOG == 1
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112 LOG(ERROR) << "Trying to write on a read-only image";
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113 #endif
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114
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115 throw OrthancException(ErrorCode_ReadOnly);
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116 }
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117
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118 return buffer_;
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119 }
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120
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121
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122 const void* ImageAccessor::GetConstRow(unsigned int y) const
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123 {
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124 if (buffer_ != NULL)
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125 {
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126 return reinterpret_cast<const uint8_t*>(buffer_) + y * pitch_;
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127 }
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128 else
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129 {
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130 return NULL;
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131 }
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132 }
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133
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134
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135 void* ImageAccessor::GetRow(unsigned int y) const
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136 {
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137 if (readOnly_)
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138 {
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139 #if HAVE_GOOGLE_LOG == 1
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140 LOG(ERROR) << "Trying to write on a read-only image";
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141 #endif
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142
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143 throw OrthancException(ErrorCode_ReadOnly);
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144 }
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145
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146 if (buffer_ != NULL)
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147 {
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148 return reinterpret_cast<uint8_t*>(buffer_) + y * pitch_;
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149 }
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150 else
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151 {
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152 return NULL;
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153 }
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154 }
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155
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156
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157 void ImageAccessor::AssignEmpty(PixelFormat format)
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158 {
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159 readOnly_ = false;
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160 format_ = format;
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161 width_ = 0;
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162 height_ = 0;
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163 pitch_ = 0;
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164 buffer_ = NULL;
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165 }
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166
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167
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168 void ImageAccessor::AssignReadOnly(PixelFormat format,
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169 unsigned int width,
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170 unsigned int height,
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171 unsigned int pitch,
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172 const void *buffer)
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173 {
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174 readOnly_ = true;
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175 format_ = format;
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176 width_ = width;
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177 height_ = height;
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178 pitch_ = pitch;
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179 buffer_ = const_cast<void*>(buffer);
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180
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181 assert(GetBytesPerPixel() * width_ <= pitch_);
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182 }
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183
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184
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185 void ImageAccessor::AssignWritable(PixelFormat format,
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186 unsigned int width,
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187 unsigned int height,
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188 unsigned int pitch,
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189 void *buffer)
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190 {
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191 readOnly_ = false;
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192 format_ = format;
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193 width_ = width;
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194 height_ = height;
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195 pitch_ = pitch;
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196 buffer_ = buffer;
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197
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198 assert(GetBytesPerPixel() * width_ <= pitch_);
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199 }
874
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200
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201
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202 void ImageAccessor::ToMatlabString(std::string& target) const
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203 {
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204 ChunkedBuffer buffer;
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205
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206 switch (GetFormat())
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207 {
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208 case PixelFormat_Grayscale8:
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209 ToMatlabStringInternal<uint8_t>(buffer, *this);
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210 break;
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211
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212 case PixelFormat_Grayscale16:
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213 ToMatlabStringInternal<uint16_t>(buffer, *this);
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214 break;
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215
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216 case PixelFormat_SignedGrayscale16:
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217 ToMatlabStringInternal<int16_t>(buffer, *this);
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218 break;
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219
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220 case PixelFormat_RGB24:
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221 RGB24ToMatlabString(buffer, *this);
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222 break;
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223
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224 default:
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225 throw OrthancException(ErrorCode_NotImplemented);
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226 }
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227
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228 buffer.Flatten(target);
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229 }
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230
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231 }