Mercurial > hg > orthanc
annotate OrthancFramework/Sources/DicomFormat/DicomIntegerPixelAccessor.cpp @ 5290:0035d4318594
fix build instructions
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 05 May 2023 09:03:04 +0200 |
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children | 48b8dae6dc77 |
rev | line source |
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0 | 1 /** |
62 | 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 * Copyright (C) 2017-2023 Osimis S.A., Belgium |
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6 * Copyright (C) 2021-2023 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
0 | 7 * |
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. |
136 | 12 * |
0 | 13 * This program is distributed in the hope that it will be useful, but |
14 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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16 * Lesser General Public License for more details. |
0 | 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/>. |
0 | 21 **/ |
22 | |
23 | |
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24 #include "../PrecompiledHeaders.h" |
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25 |
6 | 26 #ifndef NOMINMAX |
2 | 27 #define NOMINMAX |
6 | 28 #endif |
29 | |
627 | 30 #include "DicomIntegerPixelAccessor.h" |
31 | |
79 | 32 #include "../OrthancException.h" |
0 | 33 #include <boost/lexical_cast.hpp> |
2 | 34 #include <limits> |
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35 #include <cassert> |
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36 #include <stdio.h> |
0 | 37 |
62 | 38 namespace Orthanc |
0 | 39 { |
40 DicomIntegerPixelAccessor::DicomIntegerPixelAccessor(const DicomMap& values, | |
41 const void* pixelData, | |
42 size_t size) : | |
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43 information_(values), |
0 | 44 pixelData_(pixelData), |
45 size_(size) | |
46 { | |
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47 if (information_.GetBitsAllocated() > 32 || |
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48 information_.GetBitsStored() >= 32) |
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49 { |
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50 // Not available, as the accessor internally uses int32_t values |
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51 throw OrthancException(ErrorCode_NotImplemented); |
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52 } |
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53 |
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54 frame_ = 0; |
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55 frameOffset_ = information_.GetFrameSize(); |
0 | 56 |
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57 if (information_.GetNumberOfFrames() * frameOffset_ > size) |
0 | 58 { |
319 | 59 throw OrthancException(ErrorCode_BadFileFormat); |
0 | 60 } |
61 | |
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62 if (information_.IsSigned()) |
0 | 63 { |
537 | 64 // Pixels are signed |
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65 mask_ = (1 << (information_.GetBitsStored() - 1)) - 1; |
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66 signMask_ = (1 << (information_.GetBitsStored() - 1)); |
0 | 67 } |
68 else | |
69 { | |
537 | 70 // Pixels are unsigned |
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71 mask_ = (1 << information_.GetBitsStored()) - 1; |
0 | 72 signMask_ = 0; |
73 } | |
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74 |
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75 if (information_.IsPlanar()) |
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76 { |
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77 /** |
857 | 78 * Each color plane shall be sent contiguously. For RGB images, |
79 * this means the order of the pixel values sent is R1, R2, R3, | |
80 * ..., G1, G2, G3, ..., B1, B2, B3, etc. | |
81 **/ | |
860 | 82 rowOffset_ = information_.GetWidth() * information_.GetBytesPerValue(); |
857 | 83 } |
84 else | |
85 { | |
86 /** | |
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87 * The sample values for the first pixel are followed by the |
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88 * sample values for the second pixel, etc. For RGB images, this |
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89 * means the order of the pixel values sent shall be R1, G1, B1, |
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90 * R2, G2, B2, ..., etc. |
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91 **/ |
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92 if (information_.GetBitsStored() == 1) |
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93 { |
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94 if (information_.GetChannelCount() == 1 && |
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95 information_.GetBitsAllocated() == 1) |
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96 { |
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97 assert(information_.GetWidth() % 8 == 0); // Tested by DicomImageInformation |
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98 rowOffset_ = information_.GetWidth() / 8; |
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99 } |
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100 else |
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101 { |
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102 throw OrthancException(ErrorCode_IncompatibleImageFormat, |
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103 "Image not supported (multi-channel black-and-image image)"); |
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104 } |
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105 } |
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106 else |
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107 { |
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108 rowOffset_ = information_.GetWidth() * information_.GetBytesPerValue() * information_.GetChannelCount(); |
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109 } |
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110 } |
0 | 111 } |
112 | |
113 | |
114 void DicomIntegerPixelAccessor::GetExtremeValues(int32_t& min, | |
115 int32_t& max) const | |
116 { | |
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117 if (information_.GetHeight() == 0 || information_.GetWidth() == 0) |
0 | 118 { |
119 min = max = 0; | |
120 return; | |
121 } | |
122 | |
123 min = std::numeric_limits<int32_t>::max(); | |
124 max = std::numeric_limits<int32_t>::min(); | |
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125 |
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126 const unsigned int height = information_.GetHeight(); |
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127 const unsigned int width = information_.GetWidth(); |
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128 const unsigned int channels = information_.GetChannelCount(); |
0 | 129 |
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130 for (unsigned int y = 0; y < height; y++) |
0 | 131 { |
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132 for (unsigned int x = 0; x < width; x++) |
0 | 133 { |
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134 for (unsigned int c = 0; c < channels; c++) |
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135 { |
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136 int32_t v = GetValue(x, y, c); |
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137 if (v < min) |
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138 min = v; |
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139 if (v > max) |
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140 max = v; |
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141 } |
0 | 142 } |
143 } | |
144 } | |
145 | |
146 | |
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147 int32_t DicomIntegerPixelAccessor::GetValue(unsigned int x, |
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148 unsigned int y, |
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149 unsigned int channel) const |
0 | 150 { |
857 | 151 assert(x < information_.GetWidth() && |
152 y < information_.GetHeight() && | |
153 channel < information_.GetChannelCount()); | |
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154 |
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155 const uint8_t* pixel = (reinterpret_cast<const uint8_t*>(pixelData_) + |
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156 y * rowOffset_ + frame_ * frameOffset_); |
0 | 157 |
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158 if (information_.GetBitsStored() == 1) |
857 | 159 { |
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160 // New in Orthanc 1.10.0, notably for DICOM SEG |
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161 assert(information_.GetBitsAllocated() == 1 && |
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162 information_.GetChannelCount() == 1 && |
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163 !information_.IsPlanar()); |
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164 |
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165 uint8_t b = pixel[x / 8]; |
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166 |
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167 if (b & (1 << (x % 8))) |
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168 { |
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169 return 255; |
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170 } |
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171 else |
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172 { |
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173 return 0; |
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174 } |
857 | 175 } |
176 else | |
368
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177 { |
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178 // http://dicom.nema.org/medical/dicom/current/output/html/part03.html#sect_C.7.6.3.1.3 |
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179 if (information_.IsPlanar()) |
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180 { |
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181 /** |
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182 * Each color plane shall be sent contiguously. For RGB images, |
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183 * this means the order of the pixel values sent is R1, R2, R3, |
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184 * ..., G1, G2, G3, ..., B1, B2, B3, etc. |
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185 **/ |
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186 assert(frameOffset_ % information_.GetChannelCount() == 0); |
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187 pixel += channel * frameOffset_ / information_.GetChannelCount() + x * information_.GetBytesPerValue(); |
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188 } |
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189 else |
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190 { |
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191 /** |
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192 * The sample values for the first pixel are followed by the |
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193 * sample values for the second pixel, etc. For RGB images, this |
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194 * means the order of the pixel values sent shall be R1, G1, B1, |
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195 * R2, G2, B2, ..., etc. |
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196 **/ |
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197 pixel += channel * information_.GetBytesPerValue() + x * information_.GetChannelCount() * information_.GetBytesPerValue(); |
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198 } |
0 | 199 |
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200 uint32_t v; |
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201 v = pixel[0]; |
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202 if (information_.GetBytesPerValue() >= 2) |
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203 v = v + (static_cast<uint32_t>(pixel[1]) << 8); |
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204 if (information_.GetBytesPerValue() >= 3) |
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205 v = v + (static_cast<uint32_t>(pixel[2]) << 16); |
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206 if (information_.GetBytesPerValue() >= 4) |
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207 v = v + (static_cast<uint32_t>(pixel[3]) << 24); |
0 | 208 |
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209 v = v >> information_.GetShift(); |
0 | 210 |
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211 if (v & signMask_) |
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212 { |
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213 // Signed value |
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214 // http://en.wikipedia.org/wiki/Two%27s_complement#Subtraction_from_2N |
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215 return -static_cast<int32_t>(mask_) + static_cast<int32_t>(v & mask_) - 1; |
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216 } |
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217 else |
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218 { |
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219 // Unsigned value |
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220 return static_cast<int32_t>(v & mask_); |
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221 } |
464
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222 } |
0 | 223 } |
53
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224 |
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225 |
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226 void DicomIntegerPixelAccessor::SetCurrentFrame(unsigned int frame) |
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227 { |
853
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228 if (frame >= information_.GetNumberOfFrames()) |
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229 { |
62 | 230 throw OrthancException(ErrorCode_ParameterOutOfRange); |
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231 } |
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232 |
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233 frame_ = frame; |
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234 } |
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235 |
0 | 236 } |