Mercurial > hg > orthanc
annotate Core/Images/ImageAccessor.cpp @ 2145:39f4207727db
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 09 Nov 2016 17:09:29 +0100 |
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1 /** |
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2 * Orthanc - A Lightweight, RESTful DICOM Store |
1900 | 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 * |
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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 "../Logging.h" |
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37 #include "../OrthancException.h" |
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38 #include "../ChunkedBuffer.h" |
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39 |
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40 #include <stdint.h> |
860 | 41 #include <cassert> |
1397 | 42 #include <boost/lexical_cast.hpp> |
43 | |
44 | |
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45 |
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46 namespace Orthanc |
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47 { |
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48 template <typename PixelType> |
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49 static void ToMatlabStringInternal(ChunkedBuffer& target, |
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50 const ImageAccessor& source) |
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51 { |
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52 target.AddChunk("double([ "); |
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53 |
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54 for (unsigned int y = 0; y < source.GetHeight(); y++) |
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55 { |
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56 const PixelType* p = reinterpret_cast<const PixelType*>(source.GetConstRow(y)); |
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57 |
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58 std::string s; |
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59 if (y > 0) |
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60 { |
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61 s = "; "; |
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62 } |
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63 |
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64 s.reserve(source.GetWidth() * 8); |
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65 |
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66 for (unsigned int x = 0; x < source.GetWidth(); x++, p++) |
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67 { |
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68 s += boost::lexical_cast<std::string>(static_cast<double>(*p)) + " "; |
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69 } |
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70 |
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71 target.AddChunk(s); |
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72 } |
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73 |
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74 target.AddChunk("])"); |
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75 } |
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76 |
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77 |
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78 static void RGB24ToMatlabString(ChunkedBuffer& target, |
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79 const ImageAccessor& source) |
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80 { |
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81 assert(source.GetFormat() == PixelFormat_RGB24); |
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82 |
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83 target.AddChunk("double(permute(reshape([ "); |
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84 |
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85 for (unsigned int y = 0; y < source.GetHeight(); y++) |
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86 { |
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87 const uint8_t* p = reinterpret_cast<const uint8_t*>(source.GetConstRow(y)); |
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88 |
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89 std::string s; |
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90 s.reserve(source.GetWidth() * 3 * 8); |
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91 |
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92 for (unsigned int x = 0; x < 3 * source.GetWidth(); x++, p++) |
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93 { |
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94 s += boost::lexical_cast<std::string>(static_cast<int>(*p)) + " "; |
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95 } |
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96 |
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97 target.AddChunk(s); |
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98 } |
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99 |
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100 target.AddChunk("], [ 3 " + boost::lexical_cast<std::string>(source.GetHeight()) + |
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101 " " + boost::lexical_cast<std::string>(source.GetWidth()) + " ]), [ 3 2 1 ]))"); |
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102 } |
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103 |
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104 |
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105 void* ImageAccessor::GetBuffer() const |
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106 { |
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107 if (readOnly_) |
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108 { |
1491 | 109 #if ORTHANC_ENABLE_LOGGING == 1 |
861 | 110 LOG(ERROR) << "Trying to write on a read-only image"; |
1491 | 111 #endif |
112 | |
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113 throw OrthancException(ErrorCode_ReadOnly); |
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114 } |
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115 |
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116 return buffer_; |
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117 } |
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118 |
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119 |
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120 const void* ImageAccessor::GetConstRow(unsigned int y) const |
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121 { |
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122 if (buffer_ != NULL) |
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123 { |
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124 return buffer_ + y * pitch_; |
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125 } |
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126 else |
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127 { |
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128 return NULL; |
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129 } |
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130 } |
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131 |
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132 |
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133 void* ImageAccessor::GetRow(unsigned int y) const |
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134 { |
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135 if (readOnly_) |
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136 { |
1491 | 137 #if ORTHANC_ENABLE_LOGGING == 1 |
861 | 138 LOG(ERROR) << "Trying to write on a read-only image"; |
1491 | 139 #endif |
140 | |
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141 throw OrthancException(ErrorCode_ReadOnly); |
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142 } |
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143 |
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144 if (buffer_ != NULL) |
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145 { |
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146 return buffer_ + y * pitch_; |
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147 } |
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148 else |
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149 { |
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150 return NULL; |
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151 } |
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152 } |
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153 |
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154 |
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155 void ImageAccessor::AssignEmpty(PixelFormat format) |
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156 { |
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157 readOnly_ = false; |
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158 format_ = format; |
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159 width_ = 0; |
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160 height_ = 0; |
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161 pitch_ = 0; |
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162 buffer_ = NULL; |
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163 } |
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164 |
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165 |
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166 void ImageAccessor::AssignReadOnly(PixelFormat format, |
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167 unsigned int width, |
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168 unsigned int height, |
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169 unsigned int pitch, |
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170 const void *buffer) |
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171 { |
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172 readOnly_ = true; |
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173 format_ = format; |
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174 width_ = width; |
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175 height_ = height; |
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176 pitch_ = pitch; |
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177 buffer_ = reinterpret_cast<uint8_t*>(const_cast<void*>(buffer)); |
860 | 178 |
1916 | 179 if (GetBytesPerPixel() * width_ > pitch_) |
180 { | |
181 throw OrthancException(ErrorCode_ParameterOutOfRange); | |
182 } | |
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183 } |
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184 |
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185 |
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186 void ImageAccessor::AssignWritable(PixelFormat format, |
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187 unsigned int width, |
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188 unsigned int height, |
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189 unsigned int pitch, |
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190 void *buffer) |
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191 { |
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192 readOnly_ = false; |
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193 format_ = format; |
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194 width_ = width; |
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195 height_ = height; |
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196 pitch_ = pitch; |
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197 buffer_ = reinterpret_cast<uint8_t*>(buffer); |
860 | 198 |
1916 | 199 if (GetBytesPerPixel() * width_ > pitch_) |
200 { | |
201 throw OrthancException(ErrorCode_ParameterOutOfRange); | |
202 } | |
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203 } |
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204 |
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205 |
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206 void ImageAccessor::ToMatlabString(std::string& target) const |
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207 { |
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208 ChunkedBuffer buffer; |
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209 |
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210 switch (GetFormat()) |
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211 { |
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212 case PixelFormat_Grayscale8: |
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213 ToMatlabStringInternal<uint8_t>(buffer, *this); |
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214 break; |
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215 |
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216 case PixelFormat_Grayscale16: |
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217 ToMatlabStringInternal<uint16_t>(buffer, *this); |
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218 break; |
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219 |
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220 case PixelFormat_SignedGrayscale16: |
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221 ToMatlabStringInternal<int16_t>(buffer, *this); |
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222 break; |
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223 |
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224 case PixelFormat_Float32: |
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225 ToMatlabStringInternal<float>(buffer, *this); |
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226 break; |
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227 |
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228 case PixelFormat_RGB24: |
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229 RGB24ToMatlabString(buffer, *this); |
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230 break; |
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231 |
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232 default: |
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233 throw OrthancException(ErrorCode_NotImplemented); |
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234 } |
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235 |
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236 buffer.Flatten(target); |
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237 } |
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238 |
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239 |
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240 |
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241 ImageAccessor ImageAccessor::GetRegion(unsigned int x, |
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242 unsigned int y, |
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243 unsigned int width, |
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244 unsigned int height) const |
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245 { |
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246 if (x + width > width_ || |
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247 y + height > height_) |
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248 { |
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249 throw OrthancException(ErrorCode_ParameterOutOfRange); |
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250 } |
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251 |
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252 ImageAccessor result; |
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253 |
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254 if (width == 0 || |
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255 height == 0) |
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256 { |
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257 result.AssignWritable(format_, 0, 0, 0, NULL); |
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258 } |
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259 else |
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260 { |
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261 uint8_t* p = (buffer_ + |
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262 y * pitch_ + |
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263 x * GetBytesPerPixel()); |
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264 |
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265 if (readOnly_) |
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266 { |
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267 result.AssignReadOnly(format_, width, height, pitch_, p); |
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268 } |
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269 else |
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270 { |
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271 result.AssignWritable(format_, width, height, pitch_, p); |
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272 } |
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273 } |
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274 |
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275 return result; |
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276 } |
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277 |
2103
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278 |
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279 void ImageAccessor::SetFormat(PixelFormat format) |
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280 { |
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281 if (readOnly_) |
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282 { |
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283 #if ORTHANC_ENABLE_LOGGING == 1 |
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284 LOG(ERROR) << "Trying to modify the format of a read-only image"; |
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285 #endif |
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286 throw OrthancException(ErrorCode_ReadOnly); |
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287 } |
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288 |
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289 if (::Orthanc::GetBytesPerPixel(format) != ::Orthanc::GetBytesPerPixel(format_)) |
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290 { |
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291 throw OrthancException(ErrorCode_IncompatibleImageFormat); |
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292 } |
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293 |
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294 format_ = format; |
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295 } |
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296 } |