annotate Framework/Oracle/GetOrthancWebViewerJpegCommand.cpp @ 1303:83af7e562b45 broker

IGeometryProvider interface for deprecated loaders (required for AB testing in older app)
author Benjamin Golinvaux <bgo@osimis.io>
date Wed, 04 Mar 2020 09:44:09 +0100
parents 7ec8fea061b9
children c38c89684d83
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium
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6 *
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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 Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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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 * Affero 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 Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #include "GetOrthancWebViewerJpegCommand.h"
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23
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24 #include "../Toolbox/LinearAlgebra.h"
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25
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26 #include <Core/Images/Image.h>
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27 #include <Core/Images/ImageProcessing.h>
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28 #include <Core/Images/JpegReader.h>
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29 #include <Core/OrthancException.h>
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30 #include <Core/Toolbox.h>
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31
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32 #include <json/reader.h>
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33 #include <json/value.h>
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34
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35 namespace OrthancStone
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36 {
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37 GetOrthancWebViewerJpegCommand::GetOrthancWebViewerJpegCommand() :
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38 frame_(0),
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39 quality_(95),
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40 timeout_(600),
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41 expectedFormat_(Orthanc::PixelFormat_Grayscale8)
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42 {
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43 }
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45
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46 void GetOrthancWebViewerJpegCommand::SetQuality(unsigned int quality)
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47 {
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48 if (quality <= 0 ||
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49 quality > 100)
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50 {
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51 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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52 }
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53 else
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54 {
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55 quality_ = quality;
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56 }
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57 }
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58
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59
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60 std::string GetOrthancWebViewerJpegCommand::GetUri() const
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61 {
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62 return ("/web-viewer/instances/jpeg" + boost::lexical_cast<std::string>(quality_) +
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63 "-" + instanceId_ + "_" + boost::lexical_cast<std::string>(frame_));
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64 }
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65
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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) const
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70 {
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71 // This code comes from older "OrthancSlicesLoader::ParseSliceImageJpeg()"
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72
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73 Json::Value encoded;
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74
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75 {
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76 Json::Reader reader;
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77 if (!reader.parse(answer, encoded))
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78 {
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79 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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80 }
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81 }
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82
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83 if (encoded.type() != Json::objectValue ||
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84 !encoded.isMember("Orthanc") ||
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85 encoded["Orthanc"].type() != Json::objectValue)
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86 {
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87 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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88 }
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89
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90 const Json::Value& info = encoded["Orthanc"];
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91 if (!info.isMember("PixelData") ||
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92 !info.isMember("Stretched") ||
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93 !info.isMember("Compression") ||
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94 info["Compression"].type() != Json::stringValue ||
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95 info["PixelData"].type() != Json::stringValue ||
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96 info["Stretched"].type() != Json::booleanValue ||
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97 info["Compression"].asString() != "Jpeg")
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98 {
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99 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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100 }
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101
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102 bool isSigned = false;
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103 bool isStretched = info["Stretched"].asBool();
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104
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105 if (info.isMember("IsSigned"))
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106 {
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107 if (info["IsSigned"].type() != Json::booleanValue)
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108 {
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109 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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110 }
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111 else
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112 {
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113 isSigned = info["IsSigned"].asBool();
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114 }
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115 }
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116
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117 std::auto_ptr<Orthanc::ImageAccessor> reader;
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118
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119 {
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120 std::string jpeg;
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121 Orthanc::Toolbox::DecodeBase64(jpeg, info["PixelData"].asString());
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122
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123 reader.reset(new Orthanc::JpegReader);
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124 dynamic_cast<Orthanc::JpegReader&>(*reader).ReadFromMemory(jpeg);
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125 }
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126
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127 if (reader->GetFormat() == Orthanc::PixelFormat_RGB24) // This is a color image
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128 {
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129 if (expectedFormat_ != Orthanc::PixelFormat_RGB24)
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130 {
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131 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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132 }
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133
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134 if (isSigned || isStretched)
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135 {
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136 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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137 }
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138 else
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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;
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143 }
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144 }
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145
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146 if (reader->GetFormat() != Orthanc::PixelFormat_Grayscale8)
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147 {
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148 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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149 }
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150
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151 if (!isStretched)
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152 {
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153 if (expectedFormat_ != reader->GetFormat())
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154 {
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155 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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156 }
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157 else
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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;
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162 }
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163 }
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164
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165 int32_t stretchLow = 0;
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166 int32_t stretchHigh = 0;
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167
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168 if (!info.isMember("StretchLow") ||
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169 !info.isMember("StretchHigh") ||
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170 info["StretchLow"].type() != Json::intValue ||
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171 info["StretchHigh"].type() != Json::intValue)
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172 {
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173 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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174 }
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175
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176 stretchLow = info["StretchLow"].asInt();
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177 stretchHigh = info["StretchHigh"].asInt();
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178
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179 if (stretchLow < -32768 ||
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180 stretchHigh > 65535 ||
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181 (stretchLow < 0 && stretchHigh > 32767))
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182 {
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183 // This range cannot be represented with a uint16_t or an int16_t
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184 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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185 }
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186
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187 // Decode a grayscale JPEG 8bpp image coming from the Web viewer
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188 std::auto_ptr<Orthanc::ImageAccessor> image
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189 (new Orthanc::Image(expectedFormat_, reader->GetWidth(), reader->GetHeight(), false));
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190
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191 Orthanc::ImageProcessing::Convert(*image, *reader);
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192 reader.reset();
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193
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194 float scaling = static_cast<float>(stretchHigh - stretchLow) / 255.0f;
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195
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196 if (!LinearAlgebra::IsCloseToZero(scaling))
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197 {
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198 float offset = static_cast<float>(stretchLow) / scaling;
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199 Orthanc::ImageProcessing::ShiftScale(*image, offset, scaling, true);
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200 }
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201
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202 SuccessMessage message(*this, *image);
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203 emitter.EmitMessage(receiver, message);
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204 }
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205 }