Mercurial > hg > orthanc
annotate OrthancServer/DicomIntegerPixelAccessor.cpp @ 57:4bc019d2f969 orthanc-renaming
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Sun, 16 Sep 2012 09:22:48 +0200 |
| parents | PalanthirServer/DicomIntegerPixelAccessor.cpp@293038baf8f1 |
| children | a70bb32802ae |
| rev | line source |
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| 0 | 1 /** |
| 50 | 2 * Palanthir - A Lightweight, RESTful DICOM Store |
| 0 | 3 * Copyright (C) 2012 Medical Physics Department, CHU of Liege, |
| 4 * Belgium | |
| 5 * | |
| 6 * This program is free software: you can redistribute it and/or | |
| 7 * modify it under the terms of the GNU General Public License as | |
| 8 * published by the Free Software Foundation, either version 3 of the | |
| 9 * License, or (at your option) any later version. | |
| 10 * | |
| 11 * This program is distributed in the hope that it will be useful, but | |
| 12 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 * General Public License for more details. | |
| 15 * | |
| 16 * You should have received a copy of the GNU General Public License | |
| 17 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 18 **/ | |
| 19 | |
| 20 | |
| 21 #include "DicomIntegerPixelAccessor.h" | |
| 22 | |
| 6 | 23 #ifndef NOMINMAX |
| 2 | 24 #define NOMINMAX |
| 6 | 25 #endif |
| 26 | |
| 50 | 27 #include "../Core/PalanthirException.h" |
| 0 | 28 #include "FromDcmtkBridge.h" |
| 29 #include <boost/lexical_cast.hpp> | |
| 2 | 30 #include <limits> |
| 0 | 31 |
| 50 | 32 namespace Palanthir |
| 0 | 33 { |
| 34 DicomIntegerPixelAccessor::DicomIntegerPixelAccessor(const DicomMap& values, | |
| 35 const void* pixelData, | |
| 36 size_t size) : | |
| 37 pixelData_(pixelData), | |
| 38 size_(size) | |
| 39 { | |
| 40 unsigned int bitsAllocated; | |
| 41 unsigned int bitsStored; | |
| 42 unsigned int highBit; | |
| 43 unsigned int pixelRepresentation; | |
| 44 | |
| 45 try | |
| 46 { | |
| 47 width_ = boost::lexical_cast<unsigned int>(FromDcmtkBridge::GetValue(values, "Columns").AsString()); | |
| 48 height_ = boost::lexical_cast<unsigned int>(FromDcmtkBridge::GetValue(values, "Rows").AsString()); | |
| 49 samplesPerPixel_ = boost::lexical_cast<unsigned int>(FromDcmtkBridge::GetValue(values, "SamplesPerPixel").AsString()); | |
| 50 bitsAllocated = boost::lexical_cast<unsigned int>(FromDcmtkBridge::GetValue(values, "BitsAllocated").AsString()); | |
| 51 bitsStored = boost::lexical_cast<unsigned int>(FromDcmtkBridge::GetValue(values, "BitsStored").AsString()); | |
| 52 highBit = boost::lexical_cast<unsigned int>(FromDcmtkBridge::GetValue(values, "HighBit").AsString()); | |
| 53 pixelRepresentation = boost::lexical_cast<unsigned int>(FromDcmtkBridge::GetValue(values, "PixelRepresentation").AsString()); | |
| 54 } | |
| 55 catch (boost::bad_lexical_cast) | |
| 56 { | |
| 50 | 57 throw PalanthirException(ErrorCode_NotImplemented); |
| 0 | 58 } |
| 59 | |
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60 frame_ = 0; |
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61 try |
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62 { |
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63 numberOfFrames_ = boost::lexical_cast<unsigned int>(FromDcmtkBridge::GetValue(values, "NumberOfFrames").AsString()); |
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64 } |
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65 catch (PalanthirException) |
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66 { |
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67 // If the tag "NumberOfFrames" is absent, assume there is a single frame |
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68 numberOfFrames_ = 1; |
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69 } |
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70 catch (boost::bad_lexical_cast) |
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71 { |
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72 throw PalanthirException(ErrorCode_NotImplemented); |
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73 } |
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74 |
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75 if ((bitsAllocated != 8 && bitsAllocated != 16 && |
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76 bitsAllocated != 24 && bitsAllocated != 32) || |
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77 numberOfFrames_ == 0) |
| 0 | 78 { |
| 50 | 79 throw PalanthirException(ErrorCode_NotImplemented); |
| 0 | 80 } |
| 81 | |
| 82 if (bitsAllocated > 32 || | |
| 83 bitsStored >= 32) | |
| 84 { | |
| 85 // Not available, as the accessor internally uses int32_t values | |
| 50 | 86 throw PalanthirException(ErrorCode_NotImplemented); |
| 0 | 87 } |
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88 |
| 0 | 89 if (samplesPerPixel_ != 1) |
| 90 { | |
| 50 | 91 throw PalanthirException(ErrorCode_NotImplemented); |
| 0 | 92 } |
| 93 | |
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94 if (width_ * height_ * bitsAllocated / 8 * numberOfFrames_ != size) |
| 0 | 95 { |
| 50 | 96 throw PalanthirException(ErrorCode_NotImplemented); |
| 0 | 97 } |
| 98 | |
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99 /*printf("%d %d %d %d %d %d %d %d\n", width_, height_, samplesPerPixel_, bitsAllocated, |
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100 bitsStored, highBit, pixelRepresentation, numberOfFrames_);*/ |
| 0 | 101 |
| 102 bytesPerPixel_ = bitsAllocated / 8; | |
| 103 shift_ = highBit + 1 - bitsStored; | |
| 104 | |
| 105 if (pixelRepresentation) | |
| 106 { | |
| 107 mask_ = (1 << (bitsStored - 1)) - 1; | |
| 108 signMask_ = (1 << (bitsStored - 1)); | |
| 109 } | |
| 110 else | |
| 111 { | |
| 112 mask_ = (1 << bitsStored) - 1; | |
| 113 signMask_ = 0; | |
| 114 } | |
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115 |
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116 rowOffset_ = width_ * bytesPerPixel_; |
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117 frameOffset_ = height_ * width_ * bytesPerPixel_; |
| 0 | 118 } |
| 119 | |
| 120 | |
| 121 void DicomIntegerPixelAccessor::GetExtremeValues(int32_t& min, | |
| 122 int32_t& max) const | |
| 123 { | |
| 124 if (height_ == 0 || width_ == 0) | |
| 125 { | |
| 126 min = max = 0; | |
| 127 return; | |
| 128 } | |
| 129 | |
| 130 min = std::numeric_limits<int32_t>::max(); | |
| 131 max = std::numeric_limits<int32_t>::min(); | |
| 132 | |
| 133 for (unsigned int y = 0; y < height_; y++) | |
| 134 { | |
| 135 for (unsigned int x = 0; x < width_; x++) | |
| 136 { | |
| 137 int32_t v = GetValue(x, y); | |
| 138 if (v < min) | |
| 139 min = v; | |
| 140 if (v > max) | |
| 141 max = v; | |
| 142 } | |
| 143 } | |
| 144 } | |
| 145 | |
| 146 | |
| 147 int32_t DicomIntegerPixelAccessor::GetValue(unsigned int x, unsigned int y) const | |
| 148 { | |
| 149 assert(x < width_ && y < height_); | |
| 150 | |
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151 const uint8_t* pixel = reinterpret_cast<const uint8_t*>(pixelData_) + |
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152 y * rowOffset_ + x * bytesPerPixel_ + frame_ * frameOffset_; |
| 0 | 153 |
| 154 int32_t v; | |
| 155 v = pixel[0]; | |
| 156 if (bytesPerPixel_ >= 2) | |
| 157 v = v + (static_cast<int32_t>(pixel[1]) << 8); | |
| 158 if (bytesPerPixel_ >= 3) | |
| 159 v = v + (static_cast<int32_t>(pixel[2]) << 16); | |
| 160 if (bytesPerPixel_ >= 4) | |
| 161 v = v + (static_cast<int32_t>(pixel[3]) << 24); | |
| 162 | |
| 163 v = (v >> shift_) & mask_; | |
| 164 | |
| 165 if (v & signMask_) | |
| 166 { | |
| 167 // Signed value: Not implemented yet | |
| 50 | 168 //throw PalanthirException(ErrorCode_NotImplemented); |
| 0 | 169 v = 0; |
| 170 } | |
| 171 | |
| 172 return v; | |
| 173 } | |
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174 |
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175 |
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176 void DicomIntegerPixelAccessor::SetCurrentFrame(unsigned int frame) |
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177 { |
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178 if (frame >= numberOfFrames_) |
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179 { |
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180 throw PalanthirException(ErrorCode_ParameterOutOfRange); |
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181 } |
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182 |
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183 frame_ = frame; |
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184 } |
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185 |
| 0 | 186 } |