Mercurial > hg > orthanc-stone
annotate Framework/Oracle/GetOrthancWebViewerJpegCommand.cpp @ 976:3abc47e051c8
Added tag toa2019083101 for changeset e75fd08d6c75
| author | Benjamin Golinvaux <bgo@osimis.io> |
|---|---|
| date | Sat, 31 Aug 2019 13:50:11 +0200 |
| parents | a7351ad54960 |
| children | 81b29bc7c3d4 2d8ab34c8c91 |
| 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::SuccessMessage::SuccessMessage(const GetOrthancWebViewerJpegCommand& command, | |
| 38 Orthanc::ImageAccessor* image) : // Takes ownership | |
| 39 OriginMessage(command), | |
| 40 image_(image) | |
| 41 { | |
| 42 if (image == NULL) | |
| 43 { | |
| 44 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 45 } | |
| 46 } | |
| 47 | |
| 48 | |
| 49 GetOrthancWebViewerJpegCommand::GetOrthancWebViewerJpegCommand() : | |
| 50 frame_(0), | |
| 51 quality_(95), | |
|
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changeset
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52 timeout_(600), |
| 746 | 53 expectedFormat_(Orthanc::PixelFormat_Grayscale8) |
| 54 { | |
| 55 } | |
| 56 | |
| 57 | |
| 58 void GetOrthancWebViewerJpegCommand::SetQuality(unsigned int quality) | |
| 59 { | |
| 60 if (quality <= 0 || | |
| 61 quality > 100) | |
| 62 { | |
| 63 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 64 } | |
| 65 else | |
| 66 { | |
| 67 quality_ = quality; | |
| 68 } | |
| 69 } | |
| 70 | |
| 71 | |
| 72 std::string GetOrthancWebViewerJpegCommand::GetUri() const | |
| 73 { | |
| 74 return ("/web-viewer/instances/jpeg" + boost::lexical_cast<std::string>(quality_) + | |
| 75 "-" + instanceId_ + "_" + boost::lexical_cast<std::string>(frame_)); | |
| 76 } | |
| 77 | |
| 78 | |
| 79 void GetOrthancWebViewerJpegCommand::ProcessHttpAnswer(IMessageEmitter& emitter, | |
| 80 const IObserver& receiver, | |
| 81 const std::string& answer) const | |
| 82 { | |
| 83 // This code comes from older "OrthancSlicesLoader::ParseSliceImageJpeg()" | |
| 84 | |
| 85 Json::Value encoded; | |
| 86 | |
| 87 { | |
| 88 Json::Reader reader; | |
| 89 if (!reader.parse(answer, encoded)) | |
| 90 { | |
| 91 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 92 } | |
| 93 } | |
| 94 | |
| 95 if (encoded.type() != Json::objectValue || | |
| 96 !encoded.isMember("Orthanc") || | |
| 97 encoded["Orthanc"].type() != Json::objectValue) | |
| 98 { | |
| 99 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 100 } | |
| 101 | |
| 102 const Json::Value& info = encoded["Orthanc"]; | |
| 103 if (!info.isMember("PixelData") || | |
| 104 !info.isMember("Stretched") || | |
| 105 !info.isMember("Compression") || | |
| 106 info["Compression"].type() != Json::stringValue || | |
| 107 info["PixelData"].type() != Json::stringValue || | |
| 108 info["Stretched"].type() != Json::booleanValue || | |
| 109 info["Compression"].asString() != "Jpeg") | |
| 110 { | |
| 111 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 112 } | |
| 113 | |
| 114 bool isSigned = false; | |
| 115 bool isStretched = info["Stretched"].asBool(); | |
| 116 | |
| 117 if (info.isMember("IsSigned")) | |
| 118 { | |
| 119 if (info["IsSigned"].type() != Json::booleanValue) | |
| 120 { | |
| 121 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 122 } | |
| 123 else | |
| 124 { | |
| 125 isSigned = info["IsSigned"].asBool(); | |
| 126 } | |
| 127 } | |
| 128 | |
| 129 std::auto_ptr<Orthanc::ImageAccessor> reader; | |
| 130 | |
| 131 { | |
| 132 std::string jpeg; | |
| 133 Orthanc::Toolbox::DecodeBase64(jpeg, info["PixelData"].asString()); | |
| 134 | |
| 135 reader.reset(new Orthanc::JpegReader); | |
| 136 dynamic_cast<Orthanc::JpegReader&>(*reader).ReadFromMemory(jpeg); | |
| 137 } | |
| 138 | |
| 139 if (reader->GetFormat() == Orthanc::PixelFormat_RGB24) // This is a color image | |
| 140 { | |
| 141 if (expectedFormat_ != Orthanc::PixelFormat_RGB24) | |
| 142 { | |
| 143 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 144 } | |
| 145 | |
| 146 if (isSigned || isStretched) | |
| 147 { | |
| 148 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 149 } | |
| 150 else | |
| 151 { | |
| 152 SuccessMessage message(*this, reader.release()); | |
| 153 emitter.EmitMessage(receiver, message); | |
| 154 return; | |
| 155 } | |
| 156 } | |
| 157 | |
| 158 if (reader->GetFormat() != Orthanc::PixelFormat_Grayscale8) | |
| 159 { | |
| 160 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 161 } | |
| 162 | |
| 163 if (!isStretched) | |
| 164 { | |
| 165 if (expectedFormat_ != reader->GetFormat()) | |
| 166 { | |
| 167 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 168 } | |
| 169 else | |
| 170 { | |
| 171 SuccessMessage message(*this, reader.release()); | |
| 172 emitter.EmitMessage(receiver, message); | |
| 173 return; | |
| 174 } | |
| 175 } | |
| 176 | |
| 177 int32_t stretchLow = 0; | |
| 178 int32_t stretchHigh = 0; | |
| 179 | |
| 180 if (!info.isMember("StretchLow") || | |
| 181 !info.isMember("StretchHigh") || | |
| 182 info["StretchLow"].type() != Json::intValue || | |
| 183 info["StretchHigh"].type() != Json::intValue) | |
| 184 { | |
| 185 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 186 } | |
| 187 | |
| 188 stretchLow = info["StretchLow"].asInt(); | |
| 189 stretchHigh = info["StretchHigh"].asInt(); | |
| 190 | |
| 191 if (stretchLow < -32768 || | |
| 192 stretchHigh > 65535 || | |
| 193 (stretchLow < 0 && stretchHigh > 32767)) | |
| 194 { | |
| 195 // This range cannot be represented with a uint16_t or an int16_t | |
| 196 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
| 197 } | |
| 198 | |
| 199 // Decode a grayscale JPEG 8bpp image coming from the Web viewer | |
| 200 std::auto_ptr<Orthanc::ImageAccessor> image | |
| 201 (new Orthanc::Image(expectedFormat_, reader->GetWidth(), reader->GetHeight(), false)); | |
| 202 | |
| 203 Orthanc::ImageProcessing::Convert(*image, *reader); | |
| 204 reader.reset(); | |
| 205 | |
| 206 float scaling = static_cast<float>(stretchHigh - stretchLow) / 255.0f; | |
| 207 | |
| 208 if (!LinearAlgebra::IsCloseToZero(scaling)) | |
| 209 { | |
| 210 float offset = static_cast<float>(stretchLow) / scaling; | |
| 211 Orthanc::ImageProcessing::ShiftScale(*image, offset, scaling, true); | |
| 212 } | |
| 213 | |
| 214 SuccessMessage message(*this, image.release()); | |
| 215 emitter.EmitMessage(receiver, message); | |
| 216 } | |
| 217 } |