Mercurial > hg > orthanc-stone
annotate OrthancStone/Sources/Oracle/GetOrthancWebViewerJpegCommand.cpp @ 1596:4fb8fdf03314
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Mon, 26 Oct 2020 17:51:42 +0100 |
| parents | 85e117739eca |
| children | 8563ea5d8ae4 |
| rev | line source |
|---|---|
| 746 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium |
| 746 | 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. | |
|
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16 * |
| 746 | 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 | |
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26 #include <Images/Image.h> |
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27 #include <Images/ImageProcessing.h> |
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28 #include <Images/JpegReader.h> |
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29 #include <OrthancException.h> |
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30 #include <Toolbox.h> |
| 746 | 31 |
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32 #ifdef _MSC_VER |
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33 // 'Json::Reader': Use CharReader and CharReaderBuilder instead |
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34 #pragma warning(disable:4996) |
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35 #endif |
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36 |
| 746 | 37 #include <json/reader.h> |
| 38 #include <json/value.h> | |
| 39 | |
| 40 namespace OrthancStone | |
| 41 { | |
| 42 GetOrthancWebViewerJpegCommand::GetOrthancWebViewerJpegCommand() : | |
| 43 frame_(0), | |
| 44 quality_(95), | |
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45 timeout_(600), |
| 746 | 46 expectedFormat_(Orthanc::PixelFormat_Grayscale8) |
| 47 { | |
| 48 } | |
| 49 | |
| 50 | |
| 51 void GetOrthancWebViewerJpegCommand::SetQuality(unsigned int quality) | |
| 52 { | |
| 1571 | 53 if (quality == 0 || |
| 746 | 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 | |
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72 void GetOrthancWebViewerJpegCommand::ProcessHttpAnswer(boost::weak_ptr<IObserver> receiver, |
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73 IMessageEmitter& emitter, |
| 746 | 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 | |
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122 std::unique_ptr<Orthanc::ImageAccessor> reader; |
| 746 | 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 { | |
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145 SuccessMessage message(*this, *reader); |
| 746 | 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 { | |
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164 SuccessMessage message(*this, *reader); |
| 746 | 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 | |
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193 std::unique_ptr<Orthanc::ImageAccessor> image |
| 746 | 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 } | |
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206 |
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207 SuccessMessage message(*this, *image); |
| 746 | 208 emitter.EmitMessage(receiver, message); |
| 209 } | |
| 210 } |