Mercurial > hg > orthanc-stone
annotate OrthancStone/Sources/Oracle/GetOrthancWebViewerJpegCommand.cpp @ 1598:8563ea5d8ae4
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Mon, 26 Oct 2020 20:49:28 +0100 |
| parents | 4fb8fdf03314 |
| children | ef2f56c0311c |
| 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 | |
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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 |
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33 #ifdef _MSC_VER |
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34 // 'Json::Reader': Use CharReader and CharReaderBuilder instead |
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35 #pragma warning(disable:4996) |
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36 #endif |
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37 |
| 746 | 38 #include <json/reader.h> |
| 39 #include <json/value.h> | |
| 40 | |
| 41 namespace OrthancStone | |
| 42 { | |
| 43 GetOrthancWebViewerJpegCommand::GetOrthancWebViewerJpegCommand() : | |
| 44 frame_(0), | |
| 45 quality_(95), | |
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46 timeout_(600), |
| 746 | 47 expectedFormat_(Orthanc::PixelFormat_Grayscale8) |
| 48 { | |
| 49 } | |
| 50 | |
| 51 | |
| 52 void GetOrthancWebViewerJpegCommand::SetQuality(unsigned int quality) | |
| 53 { | |
| 1571 | 54 if (quality == 0 || |
| 746 | 55 quality > 100) |
| 56 { | |
| 57 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 58 } | |
| 59 else | |
| 60 { | |
| 61 quality_ = quality; | |
| 62 } | |
| 63 } | |
| 64 | |
| 65 | |
| 66 std::string GetOrthancWebViewerJpegCommand::GetUri() const | |
| 67 { | |
| 68 return ("/web-viewer/instances/jpeg" + boost::lexical_cast<std::string>(quality_) + | |
| 69 "-" + instanceId_ + "_" + boost::lexical_cast<std::string>(frame_)); | |
| 70 } | |
| 71 | |
| 72 | |
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73 void GetOrthancWebViewerJpegCommand::ProcessHttpAnswer(boost::weak_ptr<IObserver> receiver, |
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74 IMessageEmitter& emitter, |
| 746 | 75 const std::string& answer) const |
| 76 { | |
| 77 // This code comes from older "OrthancSlicesLoader::ParseSliceImageJpeg()" | |
| 78 | |
| 79 Json::Value encoded; | |
| 80 | |
| 81 { | |
| 82 Json::Reader reader; | |
| 83 if (!reader.parse(answer, encoded)) | |
| 84 { | |
| 85 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 86 } | |
| 87 } | |
| 88 | |
| 89 if (encoded.type() != Json::objectValue || | |
| 90 !encoded.isMember("Orthanc") || | |
| 91 encoded["Orthanc"].type() != Json::objectValue) | |
| 92 { | |
| 93 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 94 } | |
| 95 | |
| 96 const Json::Value& info = encoded["Orthanc"]; | |
| 97 if (!info.isMember("PixelData") || | |
| 98 !info.isMember("Stretched") || | |
| 99 !info.isMember("Compression") || | |
| 100 info["Compression"].type() != Json::stringValue || | |
| 101 info["PixelData"].type() != Json::stringValue || | |
| 102 info["Stretched"].type() != Json::booleanValue || | |
| 103 info["Compression"].asString() != "Jpeg") | |
| 104 { | |
| 105 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 106 } | |
| 107 | |
| 108 bool isSigned = false; | |
| 109 bool isStretched = info["Stretched"].asBool(); | |
| 110 | |
| 111 if (info.isMember("IsSigned")) | |
| 112 { | |
| 113 if (info["IsSigned"].type() != Json::booleanValue) | |
| 114 { | |
| 115 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 116 } | |
| 117 else | |
| 118 { | |
| 119 isSigned = info["IsSigned"].asBool(); | |
| 120 } | |
| 121 } | |
| 122 | |
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123 std::unique_ptr<Orthanc::ImageAccessor> reader; |
| 746 | 124 |
| 125 { | |
| 126 std::string jpeg; | |
| 127 Orthanc::Toolbox::DecodeBase64(jpeg, info["PixelData"].asString()); | |
| 128 | |
| 129 reader.reset(new Orthanc::JpegReader); | |
| 130 dynamic_cast<Orthanc::JpegReader&>(*reader).ReadFromMemory(jpeg); | |
| 131 } | |
| 132 | |
| 133 if (reader->GetFormat() == Orthanc::PixelFormat_RGB24) // This is a color image | |
| 134 { | |
| 135 if (expectedFormat_ != Orthanc::PixelFormat_RGB24) | |
| 136 { | |
| 137 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 138 } | |
| 139 | |
| 140 if (isSigned || isStretched) | |
| 141 { | |
| 142 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 143 } | |
| 144 else | |
| 145 { | |
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146 SuccessMessage message(*this, *reader); |
| 746 | 147 emitter.EmitMessage(receiver, message); |
| 148 return; | |
| 149 } | |
| 150 } | |
| 151 | |
| 152 if (reader->GetFormat() != Orthanc::PixelFormat_Grayscale8) | |
| 153 { | |
| 154 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 155 } | |
| 156 | |
| 157 if (!isStretched) | |
| 158 { | |
| 159 if (expectedFormat_ != reader->GetFormat()) | |
| 160 { | |
| 161 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 162 } | |
| 163 else | |
| 164 { | |
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165 SuccessMessage message(*this, *reader); |
| 746 | 166 emitter.EmitMessage(receiver, message); |
| 167 return; | |
| 168 } | |
| 169 } | |
| 170 | |
| 171 int32_t stretchLow = 0; | |
| 172 int32_t stretchHigh = 0; | |
| 173 | |
| 174 if (!info.isMember("StretchLow") || | |
| 175 !info.isMember("StretchHigh") || | |
| 176 info["StretchLow"].type() != Json::intValue || | |
| 177 info["StretchHigh"].type() != Json::intValue) | |
| 178 { | |
| 179 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 180 } | |
| 181 | |
| 182 stretchLow = info["StretchLow"].asInt(); | |
| 183 stretchHigh = info["StretchHigh"].asInt(); | |
| 184 | |
| 185 if (stretchLow < -32768 || | |
| 186 stretchHigh > 65535 || | |
| 187 (stretchLow < 0 && stretchHigh > 32767)) | |
| 188 { | |
| 189 // This range cannot be represented with a uint16_t or an int16_t | |
| 190 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 191 } | |
| 192 | |
| 193 // Decode a grayscale JPEG 8bpp image coming from the Web viewer | |
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194 std::unique_ptr<Orthanc::ImageAccessor> image |
| 746 | 195 (new Orthanc::Image(expectedFormat_, reader->GetWidth(), reader->GetHeight(), false)); |
| 196 | |
| 197 Orthanc::ImageProcessing::Convert(*image, *reader); | |
| 198 reader.reset(); | |
| 199 | |
| 200 float scaling = static_cast<float>(stretchHigh - stretchLow) / 255.0f; | |
| 201 | |
| 202 if (!LinearAlgebra::IsCloseToZero(scaling)) | |
| 203 { | |
| 204 float offset = static_cast<float>(stretchLow) / scaling; | |
| 205 Orthanc::ImageProcessing::ShiftScale(*image, offset, scaling, true); | |
| 206 } | |
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207 |
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208 SuccessMessage message(*this, *image); |
| 746 | 209 emitter.EmitMessage(receiver, message); |
| 210 } | |
| 211 } |