Mercurial > hg > orthanc-stone
comparison OrthancStone/Sources/Oracle/GetOrthancWebViewerJpegCommand.cpp @ 1512:244ad1e4e76a
reorganization of folders
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Tue, 07 Jul 2020 16:21:02 +0200 |
parents | Framework/Oracle/GetOrthancWebViewerJpegCommand.cpp@30deba7bc8e2 |
children | 85e117739eca |
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1511:9dfeee74c1e6 | 1512:244ad1e4e76a |
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1 /** | |
2 * Stone of Orthanc | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
5 * Copyright (C) 2017-2020 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 <Images/Image.h> | |
27 #include <Images/ImageProcessing.h> | |
28 #include <Images/JpegReader.h> | |
29 #include <OrthancException.h> | |
30 #include <Toolbox.h> | |
31 | |
32 #ifdef _MSC_VER | |
33 // 'Json::Reader': Use CharReader and CharReaderBuilder instead | |
34 #pragma warning(disable:4996) | |
35 #endif | |
36 | |
37 #include <json/reader.h> | |
38 #include <json/value.h> | |
39 | |
40 namespace OrthancStone | |
41 { | |
42 GetOrthancWebViewerJpegCommand::GetOrthancWebViewerJpegCommand() : | |
43 frame_(0), | |
44 quality_(95), | |
45 timeout_(600), | |
46 expectedFormat_(Orthanc::PixelFormat_Grayscale8) | |
47 { | |
48 } | |
49 | |
50 | |
51 void GetOrthancWebViewerJpegCommand::SetQuality(unsigned int quality) | |
52 { | |
53 if (quality <= 0 || | |
54 quality > 100) | |
55 { | |
56 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
57 } | |
58 else | |
59 { | |
60 quality_ = quality; | |
61 } | |
62 } | |
63 | |
64 | |
65 std::string GetOrthancWebViewerJpegCommand::GetUri() const | |
66 { | |
67 return ("/web-viewer/instances/jpeg" + boost::lexical_cast<std::string>(quality_) + | |
68 "-" + instanceId_ + "_" + boost::lexical_cast<std::string>(frame_)); | |
69 } | |
70 | |
71 | |
72 void GetOrthancWebViewerJpegCommand::ProcessHttpAnswer(boost::weak_ptr<IObserver> receiver, | |
73 IMessageEmitter& emitter, | |
74 const std::string& answer) const | |
75 { | |
76 // This code comes from older "OrthancSlicesLoader::ParseSliceImageJpeg()" | |
77 | |
78 Json::Value encoded; | |
79 | |
80 { | |
81 Json::Reader reader; | |
82 if (!reader.parse(answer, encoded)) | |
83 { | |
84 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
85 } | |
86 } | |
87 | |
88 if (encoded.type() != Json::objectValue || | |
89 !encoded.isMember("Orthanc") || | |
90 encoded["Orthanc"].type() != Json::objectValue) | |
91 { | |
92 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
93 } | |
94 | |
95 const Json::Value& info = encoded["Orthanc"]; | |
96 if (!info.isMember("PixelData") || | |
97 !info.isMember("Stretched") || | |
98 !info.isMember("Compression") || | |
99 info["Compression"].type() != Json::stringValue || | |
100 info["PixelData"].type() != Json::stringValue || | |
101 info["Stretched"].type() != Json::booleanValue || | |
102 info["Compression"].asString() != "Jpeg") | |
103 { | |
104 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
105 } | |
106 | |
107 bool isSigned = false; | |
108 bool isStretched = info["Stretched"].asBool(); | |
109 | |
110 if (info.isMember("IsSigned")) | |
111 { | |
112 if (info["IsSigned"].type() != Json::booleanValue) | |
113 { | |
114 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
115 } | |
116 else | |
117 { | |
118 isSigned = info["IsSigned"].asBool(); | |
119 } | |
120 } | |
121 | |
122 std::unique_ptr<Orthanc::ImageAccessor> reader; | |
123 | |
124 { | |
125 std::string jpeg; | |
126 Orthanc::Toolbox::DecodeBase64(jpeg, info["PixelData"].asString()); | |
127 | |
128 reader.reset(new Orthanc::JpegReader); | |
129 dynamic_cast<Orthanc::JpegReader&>(*reader).ReadFromMemory(jpeg); | |
130 } | |
131 | |
132 if (reader->GetFormat() == Orthanc::PixelFormat_RGB24) // This is a color image | |
133 { | |
134 if (expectedFormat_ != Orthanc::PixelFormat_RGB24) | |
135 { | |
136 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
137 } | |
138 | |
139 if (isSigned || isStretched) | |
140 { | |
141 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
142 } | |
143 else | |
144 { | |
145 SuccessMessage message(*this, *reader); | |
146 emitter.EmitMessage(receiver, message); | |
147 return; | |
148 } | |
149 } | |
150 | |
151 if (reader->GetFormat() != Orthanc::PixelFormat_Grayscale8) | |
152 { | |
153 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
154 } | |
155 | |
156 if (!isStretched) | |
157 { | |
158 if (expectedFormat_ != reader->GetFormat()) | |
159 { | |
160 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
161 } | |
162 else | |
163 { | |
164 SuccessMessage message(*this, *reader); | |
165 emitter.EmitMessage(receiver, message); | |
166 return; | |
167 } | |
168 } | |
169 | |
170 int32_t stretchLow = 0; | |
171 int32_t stretchHigh = 0; | |
172 | |
173 if (!info.isMember("StretchLow") || | |
174 !info.isMember("StretchHigh") || | |
175 info["StretchLow"].type() != Json::intValue || | |
176 info["StretchHigh"].type() != Json::intValue) | |
177 { | |
178 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
179 } | |
180 | |
181 stretchLow = info["StretchLow"].asInt(); | |
182 stretchHigh = info["StretchHigh"].asInt(); | |
183 | |
184 if (stretchLow < -32768 || | |
185 stretchHigh > 65535 || | |
186 (stretchLow < 0 && stretchHigh > 32767)) | |
187 { | |
188 // This range cannot be represented with a uint16_t or an int16_t | |
189 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
190 } | |
191 | |
192 // Decode a grayscale JPEG 8bpp image coming from the Web viewer | |
193 std::unique_ptr<Orthanc::ImageAccessor> image | |
194 (new Orthanc::Image(expectedFormat_, reader->GetWidth(), reader->GetHeight(), false)); | |
195 | |
196 Orthanc::ImageProcessing::Convert(*image, *reader); | |
197 reader.reset(); | |
198 | |
199 float scaling = static_cast<float>(stretchHigh - stretchLow) / 255.0f; | |
200 | |
201 if (!LinearAlgebra::IsCloseToZero(scaling)) | |
202 { | |
203 float offset = static_cast<float>(stretchLow) / scaling; | |
204 Orthanc::ImageProcessing::ShiftScale(*image, offset, scaling, true); | |
205 } | |
206 | |
207 SuccessMessage message(*this, *image); | |
208 emitter.EmitMessage(receiver, message); | |
209 } | |
210 } |