Mercurial > hg > orthanc
annotate Core/DicomFormat/DicomIntegerPixelAccessor.cpp @ 107:3b45473c0a73
replace boost::locale with iconv for debian
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Thu, 04 Oct 2012 11:22:20 +0200 |
| parents | 6212bf978584 |
| children | fe180eae201d |
| rev | line source |
|---|---|
| 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 | |
| 79 | 27 #include "../OrthancException.h" |
| 0 | 28 #include <boost/lexical_cast.hpp> |
| 2 | 29 #include <limits> |
|
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30 #include <cassert> |
| 0 | 31 |
| 62 | 32 namespace Orthanc |
| 0 | 33 { |
| 77 | 34 static const DicomTag COLUMNS(0x0028, 0x0011); |
| 35 static const DicomTag ROWS(0x0028, 0x0010); | |
| 36 static const DicomTag SAMPLES_PER_PIXEL(0x0028, 0x0002); | |
| 37 static const DicomTag BITS_ALLOCATED(0x0028, 0x0100); | |
| 38 static const DicomTag BITS_STORED(0x0028, 0x0101); | |
| 39 static const DicomTag HIGH_BIT(0x0028, 0x0102); | |
| 40 static const DicomTag PIXEL_REPRESENTATION(0x0028, 0x0103); | |
| 41 | |
| 0 | 42 DicomIntegerPixelAccessor::DicomIntegerPixelAccessor(const DicomMap& values, |
| 43 const void* pixelData, | |
| 44 size_t size) : | |
| 45 pixelData_(pixelData), | |
| 46 size_(size) | |
| 47 { | |
| 48 unsigned int bitsAllocated; | |
| 49 unsigned int bitsStored; | |
| 50 unsigned int highBit; | |
| 51 unsigned int pixelRepresentation; | |
| 52 | |
| 53 try | |
| 54 { | |
| 77 | 55 width_ = boost::lexical_cast<unsigned int>(values.GetValue(COLUMNS).AsString()); |
| 56 height_ = boost::lexical_cast<unsigned int>(values.GetValue(ROWS).AsString()); | |
| 57 samplesPerPixel_ = boost::lexical_cast<unsigned int>(values.GetValue(SAMPLES_PER_PIXEL).AsString()); | |
| 58 bitsAllocated = boost::lexical_cast<unsigned int>(values.GetValue(BITS_ALLOCATED).AsString()); | |
| 59 bitsStored = boost::lexical_cast<unsigned int>(values.GetValue(BITS_STORED).AsString()); | |
| 60 highBit = boost::lexical_cast<unsigned int>(values.GetValue(HIGH_BIT).AsString()); | |
| 61 pixelRepresentation = boost::lexical_cast<unsigned int>(values.GetValue(PIXEL_REPRESENTATION).AsString()); | |
| 0 | 62 } |
| 63 catch (boost::bad_lexical_cast) | |
| 64 { | |
| 62 | 65 throw OrthancException(ErrorCode_NotImplemented); |
| 0 | 66 } |
| 67 | |
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68 frame_ = 0; |
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69 try |
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70 { |
| 80 | 71 numberOfFrames_ = boost::lexical_cast<unsigned int>(values.GetValue(DICOM_TAG_NUMBER_OF_FRAMES).AsString()); |
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72 } |
| 62 | 73 catch (OrthancException) |
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74 { |
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75 // If the tag "NumberOfFrames" is absent, assume there is a single frame |
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76 numberOfFrames_ = 1; |
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77 } |
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78 catch (boost::bad_lexical_cast) |
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79 { |
| 62 | 80 throw OrthancException(ErrorCode_NotImplemented); |
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81 } |
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82 |
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83 if ((bitsAllocated != 8 && bitsAllocated != 16 && |
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84 bitsAllocated != 24 && bitsAllocated != 32) || |
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85 numberOfFrames_ == 0) |
| 0 | 86 { |
| 62 | 87 throw OrthancException(ErrorCode_NotImplemented); |
| 0 | 88 } |
| 89 | |
| 90 if (bitsAllocated > 32 || | |
| 91 bitsStored >= 32) | |
| 92 { | |
| 93 // Not available, as the accessor internally uses int32_t values | |
| 62 | 94 throw OrthancException(ErrorCode_NotImplemented); |
| 0 | 95 } |
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96 |
| 0 | 97 if (samplesPerPixel_ != 1) |
| 98 { | |
| 62 | 99 throw OrthancException(ErrorCode_NotImplemented); |
| 0 | 100 } |
| 101 | |
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102 if (width_ * height_ * bitsAllocated / 8 * numberOfFrames_ != size) |
| 0 | 103 { |
| 62 | 104 throw OrthancException(ErrorCode_NotImplemented); |
| 0 | 105 } |
| 106 | |
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107 /*printf("%d %d %d %d %d %d %d %d\n", width_, height_, samplesPerPixel_, bitsAllocated, |
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108 bitsStored, highBit, pixelRepresentation, numberOfFrames_);*/ |
| 0 | 109 |
| 110 bytesPerPixel_ = bitsAllocated / 8; | |
| 111 shift_ = highBit + 1 - bitsStored; | |
| 112 | |
| 113 if (pixelRepresentation) | |
| 114 { | |
| 115 mask_ = (1 << (bitsStored - 1)) - 1; | |
| 116 signMask_ = (1 << (bitsStored - 1)); | |
| 117 } | |
| 118 else | |
| 119 { | |
| 120 mask_ = (1 << bitsStored) - 1; | |
| 121 signMask_ = 0; | |
| 122 } | |
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123 |
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124 rowOffset_ = width_ * bytesPerPixel_; |
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125 frameOffset_ = height_ * width_ * bytesPerPixel_; |
| 0 | 126 } |
| 127 | |
| 128 | |
| 129 void DicomIntegerPixelAccessor::GetExtremeValues(int32_t& min, | |
| 130 int32_t& max) const | |
| 131 { | |
| 132 if (height_ == 0 || width_ == 0) | |
| 133 { | |
| 134 min = max = 0; | |
| 135 return; | |
| 136 } | |
| 137 | |
| 138 min = std::numeric_limits<int32_t>::max(); | |
| 139 max = std::numeric_limits<int32_t>::min(); | |
| 140 | |
| 141 for (unsigned int y = 0; y < height_; y++) | |
| 142 { | |
| 143 for (unsigned int x = 0; x < width_; x++) | |
| 144 { | |
| 145 int32_t v = GetValue(x, y); | |
| 146 if (v < min) | |
| 147 min = v; | |
| 148 if (v > max) | |
| 149 max = v; | |
| 150 } | |
| 151 } | |
| 152 } | |
| 153 | |
| 154 | |
| 155 int32_t DicomIntegerPixelAccessor::GetValue(unsigned int x, unsigned int y) const | |
| 156 { | |
| 157 assert(x < width_ && y < height_); | |
| 158 | |
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159 const uint8_t* pixel = reinterpret_cast<const uint8_t*>(pixelData_) + |
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160 y * rowOffset_ + x * bytesPerPixel_ + frame_ * frameOffset_; |
| 0 | 161 |
| 162 int32_t v; | |
| 163 v = pixel[0]; | |
| 164 if (bytesPerPixel_ >= 2) | |
| 165 v = v + (static_cast<int32_t>(pixel[1]) << 8); | |
| 166 if (bytesPerPixel_ >= 3) | |
| 167 v = v + (static_cast<int32_t>(pixel[2]) << 16); | |
| 168 if (bytesPerPixel_ >= 4) | |
| 169 v = v + (static_cast<int32_t>(pixel[3]) << 24); | |
| 170 | |
| 171 v = (v >> shift_) & mask_; | |
| 172 | |
| 173 if (v & signMask_) | |
| 174 { | |
| 175 // Signed value: Not implemented yet | |
| 62 | 176 //throw OrthancException(ErrorCode_NotImplemented); |
| 0 | 177 v = 0; |
| 178 } | |
| 179 | |
| 180 return v; | |
| 181 } | |
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182 |
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183 |
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184 void DicomIntegerPixelAccessor::SetCurrentFrame(unsigned int frame) |
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185 { |
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186 if (frame >= numberOfFrames_) |
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187 { |
| 62 | 188 throw OrthancException(ErrorCode_ParameterOutOfRange); |
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189 } |
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190 |
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191 frame_ = frame; |
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192 } |
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193 |
| 0 | 194 } |