Mercurial > hg > orthanc-stone
annotate Framework/Oracle/GetOrthancWebViewerJpegCommand.cpp @ 1134:87fbeb823375 broker
allocating messages from oracle commands on the stack
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 06 Nov 2019 15:16:45 +0100 |
| parents | 17660df24c36 |
| children | a0a33e5ea5bb |
| 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 | |
| 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::GetOrthancWebViewerJpegCommand() : | |
| 38 frame_(0), | |
| 39 quality_(95), | |
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40 timeout_(600), |
| 746 | 41 expectedFormat_(Orthanc::PixelFormat_Grayscale8) |
| 42 { | |
| 43 } | |
| 44 | |
| 45 | |
| 46 void GetOrthancWebViewerJpegCommand::SetQuality(unsigned int quality) | |
| 47 { | |
| 48 if (quality <= 0 || | |
| 49 quality > 100) | |
| 50 { | |
| 51 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 52 } | |
| 53 else | |
| 54 { | |
| 55 quality_ = quality; | |
| 56 } | |
| 57 } | |
| 58 | |
| 59 | |
| 60 std::string GetOrthancWebViewerJpegCommand::GetUri() const | |
| 61 { | |
| 62 return ("/web-viewer/instances/jpeg" + boost::lexical_cast<std::string>(quality_) + | |
| 63 "-" + instanceId_ + "_" + boost::lexical_cast<std::string>(frame_)); | |
| 64 } | |
| 65 | |
| 66 | |
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67 void GetOrthancWebViewerJpegCommand::ProcessHttpAnswer(boost::weak_ptr<IObserver> receiver, |
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68 IMessageEmitter& emitter, |
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69 const std::string& answer) |
| 746 | 70 { |
| 71 // This code comes from older "OrthancSlicesLoader::ParseSliceImageJpeg()" | |
| 72 | |
| 73 Json::Value encoded; | |
| 74 | |
| 75 { | |
| 76 Json::Reader reader; | |
| 77 if (!reader.parse(answer, encoded)) | |
| 78 { | |
| 79 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 80 } | |
| 81 } | |
| 82 | |
| 83 if (encoded.type() != Json::objectValue || | |
| 84 !encoded.isMember("Orthanc") || | |
| 85 encoded["Orthanc"].type() != Json::objectValue) | |
| 86 { | |
| 87 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 88 } | |
| 89 | |
| 90 const Json::Value& info = encoded["Orthanc"]; | |
| 91 if (!info.isMember("PixelData") || | |
| 92 !info.isMember("Stretched") || | |
| 93 !info.isMember("Compression") || | |
| 94 info["Compression"].type() != Json::stringValue || | |
| 95 info["PixelData"].type() != Json::stringValue || | |
| 96 info["Stretched"].type() != Json::booleanValue || | |
| 97 info["Compression"].asString() != "Jpeg") | |
| 98 { | |
| 99 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 100 } | |
| 101 | |
| 102 bool isSigned = false; | |
| 103 bool isStretched = info["Stretched"].asBool(); | |
| 104 | |
| 105 if (info.isMember("IsSigned")) | |
| 106 { | |
| 107 if (info["IsSigned"].type() != Json::booleanValue) | |
| 108 { | |
| 109 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 110 } | |
| 111 else | |
| 112 { | |
| 113 isSigned = info["IsSigned"].asBool(); | |
| 114 } | |
| 115 } | |
| 116 | |
| 117 std::auto_ptr<Orthanc::ImageAccessor> reader; | |
| 118 | |
| 119 { | |
| 120 std::string jpeg; | |
| 121 Orthanc::Toolbox::DecodeBase64(jpeg, info["PixelData"].asString()); | |
| 122 | |
| 123 reader.reset(new Orthanc::JpegReader); | |
| 124 dynamic_cast<Orthanc::JpegReader&>(*reader).ReadFromMemory(jpeg); | |
| 125 } | |
| 126 | |
| 127 if (reader->GetFormat() == Orthanc::PixelFormat_RGB24) // This is a color image | |
| 128 { | |
| 129 if (expectedFormat_ != Orthanc::PixelFormat_RGB24) | |
| 130 { | |
| 131 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 132 } | |
| 133 | |
| 134 if (isSigned || isStretched) | |
| 135 { | |
| 136 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 137 } | |
| 138 else | |
| 139 { | |
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140 SuccessMessage message(*this, *reader); |
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141 emitter.EmitMessage(receiver, message); |
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142 return; |
| 746 | 143 } |
| 144 } | |
| 145 | |
| 146 if (reader->GetFormat() != Orthanc::PixelFormat_Grayscale8) | |
| 147 { | |
| 148 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 149 } | |
| 150 | |
| 151 if (!isStretched) | |
| 152 { | |
| 153 if (expectedFormat_ != reader->GetFormat()) | |
| 154 { | |
| 155 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 156 } | |
| 157 else | |
| 158 { | |
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159 SuccessMessage message(*this, *reader); |
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160 emitter.EmitMessage(receiver, message); |
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161 return; |
| 746 | 162 } |
| 163 } | |
| 164 | |
| 165 int32_t stretchLow = 0; | |
| 166 int32_t stretchHigh = 0; | |
| 167 | |
| 168 if (!info.isMember("StretchLow") || | |
| 169 !info.isMember("StretchHigh") || | |
| 170 info["StretchLow"].type() != Json::intValue || | |
| 171 info["StretchHigh"].type() != Json::intValue) | |
| 172 { | |
| 173 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 174 } | |
| 175 | |
| 176 stretchLow = info["StretchLow"].asInt(); | |
| 177 stretchHigh = info["StretchHigh"].asInt(); | |
| 178 | |
| 179 if (stretchLow < -32768 || | |
| 180 stretchHigh > 65535 || | |
| 181 (stretchLow < 0 && stretchHigh > 32767)) | |
| 182 { | |
| 183 // This range cannot be represented with a uint16_t or an int16_t | |
| 184 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 185 } | |
| 186 | |
| 187 // Decode a grayscale JPEG 8bpp image coming from the Web viewer | |
| 188 std::auto_ptr<Orthanc::ImageAccessor> image | |
| 189 (new Orthanc::Image(expectedFormat_, reader->GetWidth(), reader->GetHeight(), false)); | |
| 190 | |
| 191 Orthanc::ImageProcessing::Convert(*image, *reader); | |
| 192 reader.reset(); | |
| 193 | |
| 194 float scaling = static_cast<float>(stretchHigh - stretchLow) / 255.0f; | |
| 195 | |
| 196 if (!LinearAlgebra::IsCloseToZero(scaling)) | |
| 197 { | |
| 198 float offset = static_cast<float>(stretchLow) / scaling; | |
| 199 Orthanc::ImageProcessing::ShiftScale(*image, offset, scaling, true); | |
| 200 } | |
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201 |
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202 SuccessMessage message(*this, *image); |
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203 emitter.EmitMessage(receiver, message); |
| 746 | 204 } |
| 205 } |