Mercurial > hg > orthanc
annotate Core/DicomFormat/DicomIntegerPixelAccessor.cpp @ 96:15f0886bf7fd Orthanc-0.2.1
Orthanc-0.2.1
author | Sebastien Jodogne <s.jodogne@gmail.com> |
---|---|
date | Fri, 28 Sep 2012 15:19:22 +0200 |
parents | 6212bf978584 |
children | 3b45473c0a73 |
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> |
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 | |
53
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
67 frame_ = 0; |
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
68 try |
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
69 { |
80 | 70 numberOfFrames_ = boost::lexical_cast<unsigned int>(values.GetValue(DICOM_TAG_NUMBER_OF_FRAMES).AsString()); |
53
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
71 } |
62 | 72 catch (OrthancException) |
53
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
73 { |
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
74 // If the tag "NumberOfFrames" is absent, assume there is a single frame |
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
75 numberOfFrames_ = 1; |
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
76 } |
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
77 catch (boost::bad_lexical_cast) |
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
78 { |
62 | 79 throw OrthancException(ErrorCode_NotImplemented); |
53
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
80 } |
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
81 |
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
82 if ((bitsAllocated != 8 && bitsAllocated != 16 && |
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
83 bitsAllocated != 24 && bitsAllocated != 32) || |
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
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 } |
53
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
95 |
0 | 96 if (samplesPerPixel_ != 1) |
97 { | |
62 | 98 throw OrthancException(ErrorCode_NotImplemented); |
0 | 99 } |
100 | |
53
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
101 if (width_ * height_ * bitsAllocated / 8 * numberOfFrames_ != size) |
0 | 102 { |
62 | 103 throw OrthancException(ErrorCode_NotImplemented); |
0 | 104 } |
105 | |
53
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
106 /*printf("%d %d %d %d %d %d %d %d\n", width_, height_, samplesPerPixel_, bitsAllocated, |
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
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 } | |
53
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
122 |
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
123 rowOffset_ = width_ * bytesPerPixel_; |
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
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 | |
53
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
158 const uint8_t* pixel = reinterpret_cast<const uint8_t*>(pixelData_) + |
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
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 } | |
53
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
181 |
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
182 |
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
183 void DicomIntegerPixelAccessor::SetCurrentFrame(unsigned int frame) |
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
184 { |
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
185 if (frame >= numberOfFrames_) |
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
186 { |
62 | 187 throw OrthancException(ErrorCode_ParameterOutOfRange); |
53
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
188 } |
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
189 |
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
190 frame_ = frame; |
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
191 } |
293038baf8f1
access to multi-frame images
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
50
diff
changeset
|
192 |
0 | 193 } |