Mercurial > hg > orthanc-stone
annotate Framework/Oracle/GetOrthancWebViewerJpegCommand.cpp @ 1110:b82b74d13830 broker
ParseDicomFileCommand
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Thu, 31 Oct 2019 15:05:46 +0100 |
parents | 17660df24c36 |
children | 87fbeb823375 |
rev | line source |
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746 | 1 /** |
2 * Stone of Orthanc | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
5 * Copyright (C) 2017-2019 Osimis S.A., Belgium | |
6 * | |
7 * This program is free software: you can redistribute it and/or | |
8 * modify it under the terms of the GNU Affero General Public License | |
9 * as published by the Free Software Foundation, either version 3 of | |
10 * the License, or (at your option) any later version. | |
11 * | |
12 * This program is distributed in the hope that it will be useful, but | |
13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 * Affero General Public License for more details. | |
16 * | |
17 * You should have received a copy of the GNU Affero General Public License | |
18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 **/ | |
20 | |
21 | |
22 #include "GetOrthancWebViewerJpegCommand.h" | |
23 | |
24 #include "../Toolbox/LinearAlgebra.h" | |
25 | |
26 #include <Core/Images/Image.h> | |
27 #include <Core/Images/ImageProcessing.h> | |
28 #include <Core/Images/JpegReader.h> | |
29 #include <Core/OrthancException.h> | |
30 #include <Core/Toolbox.h> | |
31 | |
32 #include <json/reader.h> | |
33 #include <json/value.h> | |
34 | |
35 namespace OrthancStone | |
36 { | |
37 GetOrthancWebViewerJpegCommand::SuccessMessage::SuccessMessage(const GetOrthancWebViewerJpegCommand& command, | |
38 Orthanc::ImageAccessor* image) : // Takes ownership | |
39 OriginMessage(command), | |
40 image_(image) | |
41 { | |
42 if (image == NULL) | |
43 { | |
44 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
45 } | |
46 } | |
47 | |
48 | |
49 GetOrthancWebViewerJpegCommand::GetOrthancWebViewerJpegCommand() : | |
50 frame_(0), | |
51 quality_(95), | |
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Made IsContextLost automatically set the flag by checking with the emscripten
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52 timeout_(600), |
746 | 53 expectedFormat_(Orthanc::PixelFormat_Grayscale8) |
54 { | |
55 } | |
56 | |
57 | |
58 void GetOrthancWebViewerJpegCommand::SetQuality(unsigned int quality) | |
59 { | |
60 if (quality <= 0 || | |
61 quality > 100) | |
62 { | |
63 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
64 } | |
65 else | |
66 { | |
67 quality_ = quality; | |
68 } | |
69 } | |
70 | |
71 | |
72 std::string GetOrthancWebViewerJpegCommand::GetUri() const | |
73 { | |
74 return ("/web-viewer/instances/jpeg" + boost::lexical_cast<std::string>(quality_) + | |
75 "-" + instanceId_ + "_" + boost::lexical_cast<std::string>(frame_)); | |
76 } | |
77 | |
78 | |
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79 IMessage* GetOrthancWebViewerJpegCommand::ProcessHttpAnswer(const std::string& answer) const |
746 | 80 { |
81 // This code comes from older "OrthancSlicesLoader::ParseSliceImageJpeg()" | |
82 | |
83 Json::Value encoded; | |
84 | |
85 { | |
86 Json::Reader reader; | |
87 if (!reader.parse(answer, encoded)) | |
88 { | |
89 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
90 } | |
91 } | |
92 | |
93 if (encoded.type() != Json::objectValue || | |
94 !encoded.isMember("Orthanc") || | |
95 encoded["Orthanc"].type() != Json::objectValue) | |
96 { | |
97 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
98 } | |
99 | |
100 const Json::Value& info = encoded["Orthanc"]; | |
101 if (!info.isMember("PixelData") || | |
102 !info.isMember("Stretched") || | |
103 !info.isMember("Compression") || | |
104 info["Compression"].type() != Json::stringValue || | |
105 info["PixelData"].type() != Json::stringValue || | |
106 info["Stretched"].type() != Json::booleanValue || | |
107 info["Compression"].asString() != "Jpeg") | |
108 { | |
109 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
110 } | |
111 | |
112 bool isSigned = false; | |
113 bool isStretched = info["Stretched"].asBool(); | |
114 | |
115 if (info.isMember("IsSigned")) | |
116 { | |
117 if (info["IsSigned"].type() != Json::booleanValue) | |
118 { | |
119 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
120 } | |
121 else | |
122 { | |
123 isSigned = info["IsSigned"].asBool(); | |
124 } | |
125 } | |
126 | |
127 std::auto_ptr<Orthanc::ImageAccessor> reader; | |
128 | |
129 { | |
130 std::string jpeg; | |
131 Orthanc::Toolbox::DecodeBase64(jpeg, info["PixelData"].asString()); | |
132 | |
133 reader.reset(new Orthanc::JpegReader); | |
134 dynamic_cast<Orthanc::JpegReader&>(*reader).ReadFromMemory(jpeg); | |
135 } | |
136 | |
137 if (reader->GetFormat() == Orthanc::PixelFormat_RGB24) // This is a color image | |
138 { | |
139 if (expectedFormat_ != Orthanc::PixelFormat_RGB24) | |
140 { | |
141 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
142 } | |
143 | |
144 if (isSigned || isStretched) | |
145 { | |
146 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
147 } | |
148 else | |
149 { | |
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17660df24c36
simplification of IOracleRunner
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1075
diff
changeset
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150 return new SuccessMessage(*this, reader.release()); |
746 | 151 } |
152 } | |
153 | |
154 if (reader->GetFormat() != Orthanc::PixelFormat_Grayscale8) | |
155 { | |
156 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
157 } | |
158 | |
159 if (!isStretched) | |
160 { | |
161 if (expectedFormat_ != reader->GetFormat()) | |
162 { | |
163 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
164 } | |
165 else | |
166 { | |
1098
17660df24c36
simplification of IOracleRunner
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1075
diff
changeset
|
167 return new SuccessMessage(*this, reader.release()); |
746 | 168 } |
169 } | |
170 | |
171 int32_t stretchLow = 0; | |
172 int32_t stretchHigh = 0; | |
173 | |
174 if (!info.isMember("StretchLow") || | |
175 !info.isMember("StretchHigh") || | |
176 info["StretchLow"].type() != Json::intValue || | |
177 info["StretchHigh"].type() != Json::intValue) | |
178 { | |
179 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
180 } | |
181 | |
182 stretchLow = info["StretchLow"].asInt(); | |
183 stretchHigh = info["StretchHigh"].asInt(); | |
184 | |
185 if (stretchLow < -32768 || | |
186 stretchHigh > 65535 || | |
187 (stretchLow < 0 && stretchHigh > 32767)) | |
188 { | |
189 // This range cannot be represented with a uint16_t or an int16_t | |
190 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
191 } | |
192 | |
193 // Decode a grayscale JPEG 8bpp image coming from the Web viewer | |
194 std::auto_ptr<Orthanc::ImageAccessor> image | |
195 (new Orthanc::Image(expectedFormat_, reader->GetWidth(), reader->GetHeight(), false)); | |
196 | |
197 Orthanc::ImageProcessing::Convert(*image, *reader); | |
198 reader.reset(); | |
199 | |
200 float scaling = static_cast<float>(stretchHigh - stretchLow) / 255.0f; | |
201 | |
202 if (!LinearAlgebra::IsCloseToZero(scaling)) | |
203 { | |
204 float offset = static_cast<float>(stretchLow) / scaling; | |
205 Orthanc::ImageProcessing::ShiftScale(*image, offset, scaling, true); | |
206 } | |
1098
17660df24c36
simplification of IOracleRunner
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1075
diff
changeset
|
207 |
17660df24c36
simplification of IOracleRunner
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1075
diff
changeset
|
208 return new SuccessMessage(*this, image.release()); |
746 | 209 } |
210 } |