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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 *
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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>
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41 #include <cassert>
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42 #include <boost/lexical_cast.hpp>
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43
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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 {
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109 #if ORTHANC_ENABLE_LOGGING == 1
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110 LOG(ERROR) << "Trying to write on a read-only image";
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111 #endif
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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 {
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137 #if ORTHANC_ENABLE_LOGGING == 1
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138 LOG(ERROR) << "Trying to write on a read-only image";
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139 #endif
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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));
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178
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179 if (GetBytesPerPixel() * width_ > pitch_)
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180 {
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181 throw OrthancException(ErrorCode_ParameterOutOfRange);
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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);
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198
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199 if (GetBytesPerPixel() * width_ > pitch_)
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200 {
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201 throw OrthancException(ErrorCode_ParameterOutOfRange);
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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
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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 }
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