Mercurial > hg > orthanc
annotate PalanthirServer/DicomIntegerPixelAccessor.cpp @ 45:33d67e1ab173
r
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 05 Sep 2012 13:24:59 +0200 |
| parents | PalantirServer/DicomIntegerPixelAccessor.cpp@96e57b863dd9 |
| children | a15e90e5d6fc |
| rev | line source |
|---|---|
| 0 | 1 /** |
| 2 * Palantir - A Lightweight, RESTful DICOM Store | |
| 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 | |
| 0 | 27 #include "../Core/PalantirException.h" |
| 28 #include "FromDcmtkBridge.h" | |
| 29 #include <boost/lexical_cast.hpp> | |
| 2 | 30 #include <limits> |
| 0 | 31 |
| 32 namespace Palantir | |
| 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 { | |
| 57 throw PalantirException(ErrorCode_NotImplemented); | |
| 58 } | |
| 59 | |
| 60 if (bitsAllocated != 8 && bitsAllocated != 16 && | |
| 61 bitsAllocated != 24 && bitsAllocated != 32) | |
| 62 { | |
| 63 throw PalantirException(ErrorCode_NotImplemented); | |
| 64 } | |
| 65 | |
| 66 if (bitsAllocated > 32 || | |
| 67 bitsStored >= 32) | |
| 68 { | |
| 69 // Not available, as the accessor internally uses int32_t values | |
| 70 throw PalantirException(ErrorCode_NotImplemented); | |
| 71 } | |
| 72 | |
| 73 if (samplesPerPixel_ != 1) | |
| 74 { | |
| 75 throw PalantirException(ErrorCode_NotImplemented); | |
| 76 } | |
| 77 | |
| 78 if (width_ * height_ * bitsAllocated / 8 != size) | |
| 79 { | |
| 80 throw PalantirException(ErrorCode_NotImplemented); | |
| 81 } | |
| 82 | |
|
34
96e57b863dd9
option to disallow remote access
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
6
diff
changeset
|
83 /*printf("%d %d %d %d %d %d %d\n", width_, height_, samplesPerPixel_, bitsAllocated, |
|
96e57b863dd9
option to disallow remote access
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
6
diff
changeset
|
84 bitsStored, highBit, pixelRepresentation);*/ |
| 0 | 85 |
| 86 bytesPerPixel_ = bitsAllocated / 8; | |
| 87 shift_ = highBit + 1 - bitsStored; | |
| 88 | |
| 89 if (pixelRepresentation) | |
| 90 { | |
| 91 mask_ = (1 << (bitsStored - 1)) - 1; | |
| 92 signMask_ = (1 << (bitsStored - 1)); | |
| 93 } | |
| 94 else | |
| 95 { | |
| 96 mask_ = (1 << bitsStored) - 1; | |
| 97 signMask_ = 0; | |
| 98 } | |
| 99 } | |
| 100 | |
| 101 | |
| 102 void DicomIntegerPixelAccessor::GetExtremeValues(int32_t& min, | |
| 103 int32_t& max) const | |
| 104 { | |
| 105 if (height_ == 0 || width_ == 0) | |
| 106 { | |
| 107 min = max = 0; | |
| 108 return; | |
| 109 } | |
| 110 | |
| 111 min = std::numeric_limits<int32_t>::max(); | |
| 112 max = std::numeric_limits<int32_t>::min(); | |
| 113 | |
| 114 for (unsigned int y = 0; y < height_; y++) | |
| 115 { | |
| 116 for (unsigned int x = 0; x < width_; x++) | |
| 117 { | |
| 118 int32_t v = GetValue(x, y); | |
| 119 if (v < min) | |
| 120 min = v; | |
| 121 if (v > max) | |
| 122 max = v; | |
| 123 } | |
| 124 } | |
| 125 } | |
| 126 | |
| 127 | |
| 128 int32_t DicomIntegerPixelAccessor::GetValue(unsigned int x, unsigned int y) const | |
| 129 { | |
| 130 assert(x < width_ && y < height_); | |
| 131 | |
| 132 const uint8_t* pixel = reinterpret_cast<const uint8_t*>(pixelData_) + (y * width_ + x) * bytesPerPixel_; | |
| 133 | |
| 134 int32_t v; | |
| 135 v = pixel[0]; | |
| 136 if (bytesPerPixel_ >= 2) | |
| 137 v = v + (static_cast<int32_t>(pixel[1]) << 8); | |
| 138 if (bytesPerPixel_ >= 3) | |
| 139 v = v + (static_cast<int32_t>(pixel[2]) << 16); | |
| 140 if (bytesPerPixel_ >= 4) | |
| 141 v = v + (static_cast<int32_t>(pixel[3]) << 24); | |
| 142 | |
| 143 v = (v >> shift_) & mask_; | |
| 144 | |
| 145 if (v & signMask_) | |
| 146 { | |
| 147 // Signed value: Not implemented yet | |
| 148 //throw PalantirException(ErrorCode_NotImplemented); | |
| 149 v = 0; | |
| 150 } | |
| 151 | |
| 152 return v; | |
| 153 } | |
| 154 } |