Mercurial > hg > orthanc
annotate OrthancServer/DicomIntegerPixelAccessor.cpp @ 77:b8dfde8d64e8
new dicom tags
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
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| date | Thu, 20 Sep 2012 13:41:18 +0200 |
| parents | a70bb32802ae |
| children |
| rev | line source |
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| 0 | 1 /** |
| 62 | 2 * Orthanc - 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 | |
| 62 | 27 #include "../Core/OrthancException.h" |
| 0 | 28 #include <boost/lexical_cast.hpp> |
| 2 | 29 #include <limits> |
| 0 | 30 |
| 62 | 31 namespace Orthanc |
| 0 | 32 { |
| 77 | 33 static const DicomTag COLUMNS(0x0028, 0x0011); |
| 34 static const DicomTag ROWS(0x0028, 0x0010); | |
| 35 static const DicomTag SAMPLES_PER_PIXEL(0x0028, 0x0002); | |
| 36 static const DicomTag BITS_ALLOCATED(0x0028, 0x0100); | |
| 37 static const DicomTag BITS_STORED(0x0028, 0x0101); | |
| 38 static const DicomTag HIGH_BIT(0x0028, 0x0102); | |
| 39 static const DicomTag PIXEL_REPRESENTATION(0x0028, 0x0103); | |
| 40 | |
| 0 | 41 DicomIntegerPixelAccessor::DicomIntegerPixelAccessor(const DicomMap& values, |
| 42 const void* pixelData, | |
| 43 size_t size) : | |
| 44 pixelData_(pixelData), | |
| 45 size_(size) | |
| 46 { | |
| 47 unsigned int bitsAllocated; | |
| 48 unsigned int bitsStored; | |
| 49 unsigned int highBit; | |
| 50 unsigned int pixelRepresentation; | |
| 51 | |
| 52 try | |
| 53 { | |
| 77 | 54 width_ = boost::lexical_cast<unsigned int>(values.GetValue(COLUMNS).AsString()); |
| 55 height_ = boost::lexical_cast<unsigned int>(values.GetValue(ROWS).AsString()); | |
| 56 samplesPerPixel_ = boost::lexical_cast<unsigned int>(values.GetValue(SAMPLES_PER_PIXEL).AsString()); | |
| 57 bitsAllocated = boost::lexical_cast<unsigned int>(values.GetValue(BITS_ALLOCATED).AsString()); | |
| 58 bitsStored = boost::lexical_cast<unsigned int>(values.GetValue(BITS_STORED).AsString()); | |
| 59 highBit = boost::lexical_cast<unsigned int>(values.GetValue(HIGH_BIT).AsString()); | |
| 60 pixelRepresentation = boost::lexical_cast<unsigned int>(values.GetValue(PIXEL_REPRESENTATION).AsString()); | |
| 0 | 61 } |
| 62 catch (boost::bad_lexical_cast) | |
| 63 { | |
| 62 | 64 throw OrthancException(ErrorCode_NotImplemented); |
| 0 | 65 } |
| 66 | |
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67 frame_ = 0; |
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68 try |
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69 { |
| 77 | 70 numberOfFrames_ = boost::lexical_cast<unsigned int>(values.GetValue(DicomTag::NUMBER_OF_FRAMES).AsString()); |
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71 } |
| 62 | 72 catch (OrthancException) |
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73 { |
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74 // If the tag "NumberOfFrames" is absent, assume there is a single frame |
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75 numberOfFrames_ = 1; |
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76 } |
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77 catch (boost::bad_lexical_cast) |
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78 { |
| 62 | 79 throw OrthancException(ErrorCode_NotImplemented); |
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80 } |
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81 |
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82 if ((bitsAllocated != 8 && bitsAllocated != 16 && |
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83 bitsAllocated != 24 && bitsAllocated != 32) || |
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84 numberOfFrames_ == 0) |
| 0 | 85 { |
| 62 | 86 throw OrthancException(ErrorCode_NotImplemented); |
| 0 | 87 } |
| 88 | |
| 89 if (bitsAllocated > 32 || | |
| 90 bitsStored >= 32) | |
| 91 { | |
| 92 // Not available, as the accessor internally uses int32_t values | |
| 62 | 93 throw OrthancException(ErrorCode_NotImplemented); |
| 0 | 94 } |
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95 |
| 0 | 96 if (samplesPerPixel_ != 1) |
| 97 { | |
| 62 | 98 throw OrthancException(ErrorCode_NotImplemented); |
| 0 | 99 } |
| 100 | |
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101 if (width_ * height_ * bitsAllocated / 8 * numberOfFrames_ != size) |
| 0 | 102 { |
| 62 | 103 throw OrthancException(ErrorCode_NotImplemented); |
| 0 | 104 } |
| 105 | |
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106 /*printf("%d %d %d %d %d %d %d %d\n", width_, height_, samplesPerPixel_, bitsAllocated, |
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107 bitsStored, highBit, pixelRepresentation, numberOfFrames_);*/ |
| 0 | 108 |
| 109 bytesPerPixel_ = bitsAllocated / 8; | |
| 110 shift_ = highBit + 1 - bitsStored; | |
| 111 | |
| 112 if (pixelRepresentation) | |
| 113 { | |
| 114 mask_ = (1 << (bitsStored - 1)) - 1; | |
| 115 signMask_ = (1 << (bitsStored - 1)); | |
| 116 } | |
| 117 else | |
| 118 { | |
| 119 mask_ = (1 << bitsStored) - 1; | |
| 120 signMask_ = 0; | |
| 121 } | |
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122 |
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123 rowOffset_ = width_ * bytesPerPixel_; |
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124 frameOffset_ = height_ * width_ * bytesPerPixel_; |
| 0 | 125 } |
| 126 | |
| 127 | |
| 128 void DicomIntegerPixelAccessor::GetExtremeValues(int32_t& min, | |
| 129 int32_t& max) const | |
| 130 { | |
| 131 if (height_ == 0 || width_ == 0) | |
| 132 { | |
| 133 min = max = 0; | |
| 134 return; | |
| 135 } | |
| 136 | |
| 137 min = std::numeric_limits<int32_t>::max(); | |
| 138 max = std::numeric_limits<int32_t>::min(); | |
| 139 | |
| 140 for (unsigned int y = 0; y < height_; y++) | |
| 141 { | |
| 142 for (unsigned int x = 0; x < width_; x++) | |
| 143 { | |
| 144 int32_t v = GetValue(x, y); | |
| 145 if (v < min) | |
| 146 min = v; | |
| 147 if (v > max) | |
| 148 max = v; | |
| 149 } | |
| 150 } | |
| 151 } | |
| 152 | |
| 153 | |
| 154 int32_t DicomIntegerPixelAccessor::GetValue(unsigned int x, unsigned int y) const | |
| 155 { | |
| 156 assert(x < width_ && y < height_); | |
| 157 | |
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158 const uint8_t* pixel = reinterpret_cast<const uint8_t*>(pixelData_) + |
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159 y * rowOffset_ + x * bytesPerPixel_ + frame_ * frameOffset_; |
| 0 | 160 |
| 161 int32_t v; | |
| 162 v = pixel[0]; | |
| 163 if (bytesPerPixel_ >= 2) | |
| 164 v = v + (static_cast<int32_t>(pixel[1]) << 8); | |
| 165 if (bytesPerPixel_ >= 3) | |
| 166 v = v + (static_cast<int32_t>(pixel[2]) << 16); | |
| 167 if (bytesPerPixel_ >= 4) | |
| 168 v = v + (static_cast<int32_t>(pixel[3]) << 24); | |
| 169 | |
| 170 v = (v >> shift_) & mask_; | |
| 171 | |
| 172 if (v & signMask_) | |
| 173 { | |
| 174 // Signed value: Not implemented yet | |
| 62 | 175 //throw OrthancException(ErrorCode_NotImplemented); |
| 0 | 176 v = 0; |
| 177 } | |
| 178 | |
| 179 return v; | |
| 180 } | |
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181 |
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182 |
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183 void DicomIntegerPixelAccessor::SetCurrentFrame(unsigned int frame) |
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184 { |
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185 if (frame >= numberOfFrames_) |
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186 { |
| 62 | 187 throw OrthancException(ErrorCode_ParameterOutOfRange); |
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188 } |
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189 |
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190 frame_ = frame; |
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191 } |
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192 |
| 0 | 193 } |