Mercurial > hg > orthanc-stone
annotate OrthancStone/Sources/Oracle/GetOrthancWebViewerJpegCommand.cpp @ 1739:9ac2a65d4172
upgrade to year 2021
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 06 Jan 2021 17:50:00 +0100 |
| parents | ef2f56c0311c |
| children | 3889ae96d2e9 |
| 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 | |
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5 * Copyright (C) 2017-2021 Osimis S.A., Belgium |
| 746 | 6 * |
| 7 * This program is free software: you can redistribute it and/or | |
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8 * modify it under the terms of the GNU Lesser General Public License |
| 746 | 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 | |
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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15 * Lesser General Public License for more details. |
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16 * |
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17 * You should have received a copy of the GNU Lesser General Public |
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18 * License along with this program. If not, see |
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19 * <http://www.gnu.org/licenses/>. |
| 746 | 20 **/ |
| 21 | |
| 22 | |
| 23 #include "GetOrthancWebViewerJpegCommand.h" | |
| 24 | |
| 25 #include "../Toolbox/LinearAlgebra.h" | |
| 26 | |
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27 #include <Images/Image.h> |
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28 #include <Images/ImageProcessing.h> |
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29 #include <Images/JpegReader.h> |
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30 #include <OrthancException.h> |
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31 #include <Toolbox.h> |
| 746 | 32 |
| 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 { | |
| 1571 | 48 if (quality == 0 || |
| 746 | 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, |
| 746 | 69 const std::string& answer) const |
| 70 { | |
| 71 // This code comes from older "OrthancSlicesLoader::ParseSliceImageJpeg()" | |
| 72 | |
| 73 Json::Value encoded; | |
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74 if (!Orthanc::Toolbox::ReadJson(encoded, answer)) |
| 746 | 75 { |
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76 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); |
| 746 | 77 } |
| 78 | |
| 79 if (encoded.type() != Json::objectValue || | |
| 80 !encoded.isMember("Orthanc") || | |
| 81 encoded["Orthanc"].type() != Json::objectValue) | |
| 82 { | |
| 83 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 84 } | |
| 85 | |
| 86 const Json::Value& info = encoded["Orthanc"]; | |
| 87 if (!info.isMember("PixelData") || | |
| 88 !info.isMember("Stretched") || | |
| 89 !info.isMember("Compression") || | |
| 90 info["Compression"].type() != Json::stringValue || | |
| 91 info["PixelData"].type() != Json::stringValue || | |
| 92 info["Stretched"].type() != Json::booleanValue || | |
| 93 info["Compression"].asString() != "Jpeg") | |
| 94 { | |
| 95 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 96 } | |
| 97 | |
| 98 bool isSigned = false; | |
| 99 bool isStretched = info["Stretched"].asBool(); | |
| 100 | |
| 101 if (info.isMember("IsSigned")) | |
| 102 { | |
| 103 if (info["IsSigned"].type() != Json::booleanValue) | |
| 104 { | |
| 105 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 106 } | |
| 107 else | |
| 108 { | |
| 109 isSigned = info["IsSigned"].asBool(); | |
| 110 } | |
| 111 } | |
| 112 | |
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113 std::unique_ptr<Orthanc::ImageAccessor> reader; |
| 746 | 114 |
| 115 { | |
| 116 std::string jpeg; | |
| 117 Orthanc::Toolbox::DecodeBase64(jpeg, info["PixelData"].asString()); | |
| 118 | |
| 119 reader.reset(new Orthanc::JpegReader); | |
| 120 dynamic_cast<Orthanc::JpegReader&>(*reader).ReadFromMemory(jpeg); | |
| 121 } | |
| 122 | |
| 123 if (reader->GetFormat() == Orthanc::PixelFormat_RGB24) // This is a color image | |
| 124 { | |
| 125 if (expectedFormat_ != Orthanc::PixelFormat_RGB24) | |
| 126 { | |
| 127 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 128 } | |
| 129 | |
| 130 if (isSigned || isStretched) | |
| 131 { | |
| 132 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 133 } | |
| 134 else | |
| 135 { | |
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136 SuccessMessage message(*this, *reader); |
| 746 | 137 emitter.EmitMessage(receiver, message); |
| 138 return; | |
| 139 } | |
| 140 } | |
| 141 | |
| 142 if (reader->GetFormat() != Orthanc::PixelFormat_Grayscale8) | |
| 143 { | |
| 144 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 145 } | |
| 146 | |
| 147 if (!isStretched) | |
| 148 { | |
| 149 if (expectedFormat_ != reader->GetFormat()) | |
| 150 { | |
| 151 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 152 } | |
| 153 else | |
| 154 { | |
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155 SuccessMessage message(*this, *reader); |
| 746 | 156 emitter.EmitMessage(receiver, message); |
| 157 return; | |
| 158 } | |
| 159 } | |
| 160 | |
| 161 int32_t stretchLow = 0; | |
| 162 int32_t stretchHigh = 0; | |
| 163 | |
| 164 if (!info.isMember("StretchLow") || | |
| 165 !info.isMember("StretchHigh") || | |
| 166 info["StretchLow"].type() != Json::intValue || | |
| 167 info["StretchHigh"].type() != Json::intValue) | |
| 168 { | |
| 169 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 170 } | |
| 171 | |
| 172 stretchLow = info["StretchLow"].asInt(); | |
| 173 stretchHigh = info["StretchHigh"].asInt(); | |
| 174 | |
| 175 if (stretchLow < -32768 || | |
| 176 stretchHigh > 65535 || | |
| 177 (stretchLow < 0 && stretchHigh > 32767)) | |
| 178 { | |
| 179 // This range cannot be represented with a uint16_t or an int16_t | |
| 180 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 181 } | |
| 182 | |
| 183 // Decode a grayscale JPEG 8bpp image coming from the Web viewer | |
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184 std::unique_ptr<Orthanc::ImageAccessor> image |
| 746 | 185 (new Orthanc::Image(expectedFormat_, reader->GetWidth(), reader->GetHeight(), false)); |
| 186 | |
| 187 Orthanc::ImageProcessing::Convert(*image, *reader); | |
| 188 reader.reset(); | |
| 189 | |
| 190 float scaling = static_cast<float>(stretchHigh - stretchLow) / 255.0f; | |
| 191 | |
| 192 if (!LinearAlgebra::IsCloseToZero(scaling)) | |
| 193 { | |
| 194 float offset = static_cast<float>(stretchLow) / scaling; | |
| 195 Orthanc::ImageProcessing::ShiftScale(*image, offset, scaling, true); | |
| 196 } | |
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197 |
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198 SuccessMessage message(*this, *image); |
| 746 | 199 emitter.EmitMessage(receiver, message); |
| 200 } | |
| 201 } |