Mercurial > hg > orthanc-wsi
comparison Framework/Inputs/DicomPyramidInstance.cpp @ 0:4a7a53257c7d
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Sat, 22 Oct 2016 21:48:33 +0200 |
parents | |
children | 7a88c614be04 |
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-1:000000000000 | 0:4a7a53257c7d |
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1 /** | |
2 * Orthanc - A Lightweight, RESTful DICOM Store | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
5 * | |
6 * This program is free software: you can redistribute it and/or | |
7 * modify it under the terms of the GNU Affero General Public License | |
8 * as published by the Free Software Foundation, either version 3 of | |
9 * the 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 * Affero General Public License for more details. | |
15 * | |
16 * You should have received a copy of the GNU Affero General Public License | |
17 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 **/ | |
19 | |
20 | |
21 #include "DicomPyramidInstance.h" | |
22 | |
23 #include "../Orthanc/Core/Logging.h" | |
24 #include "../Orthanc/Core/OrthancException.h" | |
25 #include "../Orthanc/Core/Toolbox.h" | |
26 #include "../DicomToolbox.h" | |
27 | |
28 #include <cassert> | |
29 | |
30 namespace OrthancWSI | |
31 { | |
32 static ImageCompression DetectImageCompression(const Json::Value& header) | |
33 { | |
34 std::string s = Orthanc::Toolbox::StripSpaces | |
35 (DicomToolbox::GetMandatoryStringTag(header, "TransferSyntaxUID")); | |
36 | |
37 if (s == "1.2.840.10008.1.2" || | |
38 s == "1.2.840.10008.1.2.1") | |
39 { | |
40 return ImageCompression_None; | |
41 } | |
42 else if (s == "1.2.840.10008.1.2.4.50") | |
43 { | |
44 return ImageCompression_Jpeg; | |
45 } | |
46 else if (s == "1.2.840.10008.1.2.4.90" || | |
47 s == "1.2.840.10008.1.2.4.91") | |
48 { | |
49 return ImageCompression_Jpeg2000; | |
50 } | |
51 else | |
52 { | |
53 LOG(ERROR) << "Unsupported transfer syntax: " << s; | |
54 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
55 } | |
56 } | |
57 | |
58 | |
59 static Orthanc::PixelFormat DetectPixelFormat(const Json::Value& dicom) | |
60 { | |
61 std::string photometric = Orthanc::Toolbox::StripSpaces | |
62 (DicomToolbox::GetMandatoryStringTag(dicom, "PhotometricInterpretation")); | |
63 | |
64 if (photometric == "PALETTE") | |
65 { | |
66 LOG(ERROR) << "Unsupported photometric interpretation: " << photometric; | |
67 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
68 } | |
69 | |
70 unsigned int bitsStored = DicomToolbox::GetUnsignedIntegerTag(dicom, "BitsStored"); | |
71 unsigned int samplesPerPixel = DicomToolbox::GetUnsignedIntegerTag(dicom, "SamplesPerPixel"); | |
72 bool isSigned = (DicomToolbox::GetUnsignedIntegerTag(dicom, "PixelRepresentation") != 0); | |
73 | |
74 if (bitsStored == 8 && | |
75 samplesPerPixel == 1 && | |
76 !isSigned) | |
77 { | |
78 return Orthanc::PixelFormat_Grayscale8; | |
79 } | |
80 else if (bitsStored == 8 && | |
81 samplesPerPixel == 3 && | |
82 !isSigned) | |
83 { | |
84 return Orthanc::PixelFormat_RGB24; | |
85 } | |
86 else | |
87 { | |
88 LOG(ERROR) << "Unsupported pixel format"; | |
89 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
90 } | |
91 } | |
92 | |
93 | |
94 DicomPyramidInstance::DicomPyramidInstance(IOrthancConnection& orthanc, | |
95 const std::string& instanceId) : | |
96 instanceId_(instanceId) | |
97 { | |
98 Json::Value dicom, header; | |
99 IOrthancConnection::RestApiGet(dicom, orthanc, "/instances/" + instanceId + "/tags?simplify"); | |
100 IOrthancConnection::RestApiGet(header, orthanc, "/instances/" + instanceId + "/header?simplify"); | |
101 | |
102 if (DicomToolbox::GetMandatoryStringTag(dicom, "SOPClassUID") != "1.2.840.10008.5.1.4.1.1.77.1.6" || | |
103 DicomToolbox::GetMandatoryStringTag(dicom, "Modality") != "SM") | |
104 { | |
105 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
106 } | |
107 | |
108 compression_ = DetectImageCompression(header); | |
109 format_ = DetectPixelFormat(dicom); | |
110 tileWidth_ = DicomToolbox::GetUnsignedIntegerTag(dicom, "Columns"); | |
111 tileHeight_ = DicomToolbox::GetUnsignedIntegerTag(dicom, "Rows"); | |
112 totalWidth_ = DicomToolbox::GetUnsignedIntegerTag(dicom, "TotalPixelMatrixColumns"); | |
113 totalHeight_ = DicomToolbox::GetUnsignedIntegerTag(dicom, "TotalPixelMatrixRows"); | |
114 | |
115 const Json::Value& frames = DicomToolbox::GetSequenceTag(dicom, "PerFrameFunctionalGroupsSequence"); | |
116 | |
117 if (frames.size() != DicomToolbox::GetUnsignedIntegerTag(dicom, "NumberOfFrames")) | |
118 { | |
119 LOG(ERROR) << "Mismatch between the number of frames in instance: " << instanceId; | |
120 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
121 } | |
122 | |
123 frames_.resize(frames.size()); | |
124 | |
125 for (Json::Value::ArrayIndex i = 0; i < frames.size(); i++) | |
126 { | |
127 const Json::Value& frame = DicomToolbox::GetSequenceTag(frames[i], "PlanePositionSlideSequence"); | |
128 if (frame.size() != 1) | |
129 { | |
130 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
131 } | |
132 | |
133 // "-1", because coordinates are shifted by 1 in DICOM | |
134 int xx = DicomToolbox::GetIntegerTag(frame[0], "ColumnPositionInTotalImagePixelMatrix") - 1; | |
135 int yy = DicomToolbox::GetIntegerTag(frame[0], "RowPositionInTotalImagePixelMatrix") - 1; | |
136 | |
137 unsigned int x = static_cast<unsigned int>(xx); | |
138 unsigned int y = static_cast<unsigned int>(yy); | |
139 | |
140 if (xx < 0 || | |
141 yy < 0 || | |
142 x % tileWidth_ != 0 || | |
143 y % tileHeight_ != 0 || | |
144 x >= totalWidth_ || | |
145 y >= totalHeight_) | |
146 { | |
147 LOG(ERROR) << "Frame " << i << " with unexpected tile location (" | |
148 << x << "," << y << ") in instance: " << instanceId; | |
149 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
150 } | |
151 | |
152 frames_[i].first = x / tileWidth_; | |
153 frames_[i].second = y / tileHeight_; | |
154 } | |
155 } | |
156 | |
157 | |
158 unsigned int DicomPyramidInstance::GetFrameLocationX(size_t frame) const | |
159 { | |
160 assert(frame < frames_.size()); | |
161 return frames_[frame].first; | |
162 } | |
163 | |
164 | |
165 unsigned int DicomPyramidInstance::GetFrameLocationY(size_t frame) const | |
166 { | |
167 assert(frame < frames_.size()); | |
168 return frames_[frame].second; | |
169 } | |
170 } |