Mercurial > hg > orthanc
annotate PalanthirServer/DicomIntegerPixelAccessor.cpp @ 48:0a04c70747d9
renaming
author | Sebastien Jodogne <s.jodogne@gmail.com> |
---|---|
date | Wed, 05 Sep 2012 15:36:45 +0200 |
parents | 33d67e1ab173 |
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 } |