Mercurial > hg > orthanc-stone
annotate OrthancStone/Sources/Oracle/GetOrthancWebViewerJpegCommand.cpp @ 2089:63d77859edee dicom-sr
cont
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Tue, 07 Nov 2023 19:30:44 +0100 |
| parents | 07964689cb0b |
| children | c23eef785569 |
| 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) 2017-2023 Osimis S.A., Belgium |
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6 * Copyright (C) 2021-2023 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
| 746 | 7 * |
| 8 * This program is free software: you can redistribute it and/or | |
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9 * modify it under the terms of the GNU Lesser General Public License |
| 746 | 10 * as published by the Free Software Foundation, either version 3 of |
| 11 * the License, or (at your option) any later version. | |
| 12 * | |
| 13 * This program is distributed in the hope that it will be useful, but | |
| 14 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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16 * Lesser General Public License for more details. |
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17 * |
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18 * You should have received a copy of the GNU Lesser General Public |
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19 * License along with this program. If not, see |
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20 * <http://www.gnu.org/licenses/>. |
| 746 | 21 **/ |
| 22 | |
| 23 | |
| 24 #include "GetOrthancWebViewerJpegCommand.h" | |
| 25 | |
| 26 #include "../Toolbox/LinearAlgebra.h" | |
| 27 | |
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28 #include <Images/Image.h> |
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29 #include <Images/ImageProcessing.h> |
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30 #include <Images/JpegReader.h> |
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31 #include <OrthancException.h> |
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32 #include <Toolbox.h> |
| 746 | 33 |
| 34 #include <json/value.h> | |
| 35 | |
| 36 namespace OrthancStone | |
| 37 { | |
| 38 GetOrthancWebViewerJpegCommand::GetOrthancWebViewerJpegCommand() : | |
| 39 frame_(0), | |
| 40 quality_(95), | |
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41 timeout_(600), |
| 746 | 42 expectedFormat_(Orthanc::PixelFormat_Grayscale8) |
| 43 { | |
| 44 } | |
| 45 | |
| 46 | |
| 47 void GetOrthancWebViewerJpegCommand::SetQuality(unsigned int quality) | |
| 48 { | |
| 1571 | 49 if (quality == 0 || |
| 746 | 50 quality > 100) |
| 51 { | |
| 52 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 53 } | |
| 54 else | |
| 55 { | |
| 56 quality_ = quality; | |
| 57 } | |
| 58 } | |
| 59 | |
| 60 | |
| 61 std::string GetOrthancWebViewerJpegCommand::GetUri() const | |
| 62 { | |
| 63 return ("/web-viewer/instances/jpeg" + boost::lexical_cast<std::string>(quality_) + | |
| 64 "-" + instanceId_ + "_" + boost::lexical_cast<std::string>(frame_)); | |
| 65 } | |
| 66 | |
| 67 | |
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68 void GetOrthancWebViewerJpegCommand::ProcessHttpAnswer(boost::weak_ptr<IObserver> receiver, |
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69 IMessageEmitter& emitter, |
| 746 | 70 const std::string& answer) const |
| 71 { | |
| 72 // This code comes from older "OrthancSlicesLoader::ParseSliceImageJpeg()" | |
| 73 | |
| 74 Json::Value encoded; | |
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75 if (!Orthanc::Toolbox::ReadJson(encoded, answer)) |
| 746 | 76 { |
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77 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); |
| 746 | 78 } |
| 79 | |
| 80 if (encoded.type() != Json::objectValue || | |
| 81 !encoded.isMember("Orthanc") || | |
| 82 encoded["Orthanc"].type() != Json::objectValue) | |
| 83 { | |
| 84 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 85 } | |
| 86 | |
| 87 const Json::Value& info = encoded["Orthanc"]; | |
| 88 if (!info.isMember("PixelData") || | |
| 89 !info.isMember("Stretched") || | |
| 90 !info.isMember("Compression") || | |
| 91 info["Compression"].type() != Json::stringValue || | |
| 92 info["PixelData"].type() != Json::stringValue || | |
| 93 info["Stretched"].type() != Json::booleanValue || | |
| 94 info["Compression"].asString() != "Jpeg") | |
| 95 { | |
| 96 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 97 } | |
| 98 | |
| 99 bool isSigned = false; | |
| 100 bool isStretched = info["Stretched"].asBool(); | |
| 101 | |
| 102 if (info.isMember("IsSigned")) | |
| 103 { | |
| 104 if (info["IsSigned"].type() != Json::booleanValue) | |
| 105 { | |
| 106 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 107 } | |
| 108 else | |
| 109 { | |
| 110 isSigned = info["IsSigned"].asBool(); | |
| 111 } | |
| 112 } | |
| 113 | |
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114 std::unique_ptr<Orthanc::ImageAccessor> reader; |
| 746 | 115 |
| 116 { | |
| 117 std::string jpeg; | |
| 118 Orthanc::Toolbox::DecodeBase64(jpeg, info["PixelData"].asString()); | |
| 119 | |
| 120 reader.reset(new Orthanc::JpegReader); | |
| 121 dynamic_cast<Orthanc::JpegReader&>(*reader).ReadFromMemory(jpeg); | |
| 122 } | |
| 123 | |
| 124 if (reader->GetFormat() == Orthanc::PixelFormat_RGB24) // This is a color image | |
| 125 { | |
| 126 if (expectedFormat_ != Orthanc::PixelFormat_RGB24) | |
| 127 { | |
| 128 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 129 } | |
| 130 | |
| 131 if (isSigned || isStretched) | |
| 132 { | |
| 133 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 134 } | |
| 135 else | |
| 136 { | |
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137 SuccessMessage message(*this, *reader); |
| 746 | 138 emitter.EmitMessage(receiver, message); |
| 139 return; | |
| 140 } | |
| 141 } | |
| 142 | |
| 143 if (reader->GetFormat() != Orthanc::PixelFormat_Grayscale8) | |
| 144 { | |
| 145 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 146 } | |
| 147 | |
| 148 if (!isStretched) | |
| 149 { | |
| 150 if (expectedFormat_ != reader->GetFormat()) | |
| 151 { | |
| 152 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 153 } | |
| 154 else | |
| 155 { | |
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156 SuccessMessage message(*this, *reader); |
| 746 | 157 emitter.EmitMessage(receiver, message); |
| 158 return; | |
| 159 } | |
| 160 } | |
| 161 | |
| 162 int32_t stretchLow = 0; | |
| 163 int32_t stretchHigh = 0; | |
| 164 | |
| 165 if (!info.isMember("StretchLow") || | |
| 166 !info.isMember("StretchHigh") || | |
| 167 info["StretchLow"].type() != Json::intValue || | |
| 168 info["StretchHigh"].type() != Json::intValue) | |
| 169 { | |
| 170 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 171 } | |
| 172 | |
| 173 stretchLow = info["StretchLow"].asInt(); | |
| 174 stretchHigh = info["StretchHigh"].asInt(); | |
| 175 | |
| 176 if (stretchLow < -32768 || | |
| 177 stretchHigh > 65535 || | |
| 178 (stretchLow < 0 && stretchHigh > 32767)) | |
| 179 { | |
| 180 // This range cannot be represented with a uint16_t or an int16_t | |
| 181 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 182 } | |
| 183 | |
| 184 // Decode a grayscale JPEG 8bpp image coming from the Web viewer | |
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185 std::unique_ptr<Orthanc::ImageAccessor> image |
| 746 | 186 (new Orthanc::Image(expectedFormat_, reader->GetWidth(), reader->GetHeight(), false)); |
| 187 | |
| 188 Orthanc::ImageProcessing::Convert(*image, *reader); | |
| 189 reader.reset(); | |
| 190 | |
| 191 float scaling = static_cast<float>(stretchHigh - stretchLow) / 255.0f; | |
| 192 | |
| 193 if (!LinearAlgebra::IsCloseToZero(scaling)) | |
| 194 { | |
| 195 float offset = static_cast<float>(stretchLow) / scaling; | |
| 196 Orthanc::ImageProcessing::ShiftScale(*image, offset, scaling, true); | |
| 197 } | |
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198 |
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199 SuccessMessage message(*this, *image); |
| 746 | 200 emitter.EmitMessage(receiver, message); |
| 201 } | |
| 202 } |