Mercurial > hg > orthanc

annotate Core/ImageFormats/ImageAccessor.cpp @ 983:80d4f1618b33 plugins

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Sample plugin to replace DCMTK by GDCM when decoding images
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 01 Jul 2014 12:01:58 +0200
parents 87791ebc1f50
children 6e7e5ed91c2d
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege,
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4 * 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 <glog/logging.h>
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42 #include <boost/lexical_cast.hpp>
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43
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44 namespace Orthanc
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45 {
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46 template <typename PixelType>
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47 static void ToMatlabStringInternal(ChunkedBuffer& target,
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48 const ImageAccessor& source)
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49 {
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50 target.AddChunk("double([ ");
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51
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52 for (unsigned int y = 0; y < source.GetHeight(); y++)
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53 {
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54 const PixelType* p = reinterpret_cast<const PixelType*>(source.GetConstRow(y));
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55
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56 std::string s;
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57 if (y > 0)
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58 {
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59 s = "; ";
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60 }
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61
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62 s.reserve(source.GetWidth() * 8);
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63
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64 for (unsigned int x = 0; x < source.GetWidth(); x++, p++)
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65 {
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66 s += boost::lexical_cast<std::string>(static_cast<int>(*p)) + " ";
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67 }
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68
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69 target.AddChunk(s);
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70 }
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71
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72 target.AddChunk("])");
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73 }
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74
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75
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76 static void RGB24ToMatlabString(ChunkedBuffer& target,
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77 const ImageAccessor& source)
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78 {
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79 assert(source.GetFormat() == PixelFormat_RGB24);
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80
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81 target.AddChunk("double(permute(reshape([ ");
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82
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83 for (unsigned int y = 0; y < source.GetHeight(); y++)
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84 {
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85 const uint8_t* p = reinterpret_cast<const uint8_t*>(source.GetConstRow(y));
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86
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87 std::string s;
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88 s.reserve(source.GetWidth() * 3 * 8);
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89
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90 for (unsigned int x = 0; x < 3 * source.GetWidth(); x++, p++)
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91 {
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92 s += boost::lexical_cast<std::string>(static_cast<int>(*p)) + " ";
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93 }
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94
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95 target.AddChunk(s);
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96 }
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97
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98 target.AddChunk("], [ 3 " + boost::lexical_cast<std::string>(source.GetHeight()) +
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99 " " + boost::lexical_cast<std::string>(source.GetWidth()) + " ]), [ 3 2 1 ]))");
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100 }
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101
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102
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103 void* ImageAccessor::GetBuffer() const
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104 {
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105 if (readOnly_)
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106 {
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107 LOG(ERROR) << "Trying to write on a read-only image";
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108 throw OrthancException(ErrorCode_ReadOnly);
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109 }
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110
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111 return buffer_;
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112 }
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113
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114
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115 const void* ImageAccessor::GetConstRow(unsigned int y) const
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116 {
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117 if (buffer_ != NULL)
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118 {
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119 return reinterpret_cast<const uint8_t*>(buffer_) + y * pitch_;
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120 }
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121 else
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122 {
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123 return NULL;
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124 }
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125 }
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126
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127
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128 void* ImageAccessor::GetRow(unsigned int y) const
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129 {
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130 if (readOnly_)
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131 {
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132 LOG(ERROR) << "Trying to write on a read-only image";
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133 throw OrthancException(ErrorCode_ReadOnly);
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134 }
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135
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136 if (buffer_ != NULL)
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137 {
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138 return reinterpret_cast<uint8_t*>(buffer_) + y * pitch_;
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139 }
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140 else
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141 {
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142 return NULL;
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143 }
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144 }
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145
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146
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147 void ImageAccessor::AssignEmpty(PixelFormat format)
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148 {
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149 readOnly_ = false;
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150 format_ = format;
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151 width_ = 0;
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152 height_ = 0;
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153 pitch_ = 0;
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154 buffer_ = NULL;
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155 }
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156
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157
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158 void ImageAccessor::AssignReadOnly(PixelFormat format,
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159 unsigned int width,
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160 unsigned int height,
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161 unsigned int pitch,
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162 const void *buffer)
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163 {
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164 readOnly_ = true;
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165 format_ = format;
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166 width_ = width;
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167 height_ = height;
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168 pitch_ = pitch;
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169 buffer_ = const_cast<void*>(buffer);
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170
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171 assert(GetBytesPerPixel() * width_ <= pitch_);
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172 }
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173
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174
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175 void ImageAccessor::AssignWritable(PixelFormat format,
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176 unsigned int width,
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177 unsigned int height,
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178 unsigned int pitch,
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179 void *buffer)
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180 {
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181 readOnly_ = false;
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182 format_ = format;
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183 width_ = width;
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184 height_ = height;
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185 pitch_ = pitch;
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186 buffer_ = buffer;
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187
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188 assert(GetBytesPerPixel() * width_ <= pitch_);
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189 }
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190
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191
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192 void ImageAccessor::ToMatlabString(std::string& target) const
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193 {
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194 ChunkedBuffer buffer;
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195
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196 switch (GetFormat())
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197 {
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198 case PixelFormat_Grayscale8:
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199 ToMatlabStringInternal<uint8_t>(buffer, *this);
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200 break;
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201
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202 case PixelFormat_Grayscale16:
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203 ToMatlabStringInternal<uint16_t>(buffer, *this);
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204 break;
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205
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206 case PixelFormat_SignedGrayscale16:
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207 ToMatlabStringInternal<int16_t>(buffer, *this);
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208 break;
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209
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210 case PixelFormat_RGB24:
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211 RGB24ToMatlabString(buffer, *this);
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212 break;
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213
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214 default:
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215 throw OrthancException(ErrorCode_NotImplemented);
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216 }
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217
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218 buffer.Flatten(target);
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219 }
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220
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221 }