--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/Oracle/GetOrthancImageCommand.cpp	Wed May 22 12:48:57 2019 +0200
@@ -0,0 +1,153 @@
+/**
+ * Stone of Orthanc
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2019 Osimis S.A., Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Affero General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#include "GetOrthancImageCommand.h"
+
+#include <Core/Images/JpegReader.h>
+#include <Core/Images/PamReader.h>
+#include <Core/Images/PngReader.h>
+#include <Core/OrthancException.h>
+#include <Core/Toolbox.h>
+
+namespace OrthancStone
+{
+  GetOrthancImageCommand::SuccessMessage::SuccessMessage(const GetOrthancImageCommand& command,
+                                                         Orthanc::ImageAccessor* image,   // Takes ownership
+                                                         Orthanc::MimeType mime) :
+    OriginMessage(command),
+    image_(image),
+    mime_(mime)
+  {
+    if (image == NULL)
+    {
+      throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
+    }
+  }
+
+
+  GetOrthancImageCommand::GetOrthancImageCommand() :
+    uri_("/"),
+    timeout_(10),
+    hasExpectedFormat_(false)
+  {
+  }
+
+
+  void GetOrthancImageCommand::SetExpectedPixelFormat(Orthanc::PixelFormat format)
+  {
+    hasExpectedFormat_ = true;
+    expectedFormat_ = format;
+  }
+
+
+  void GetOrthancImageCommand::SetInstanceUri(const std::string& instance,
+                                              Orthanc::PixelFormat pixelFormat)
+  {
+    uri_ = "/instances/" + instance;
+          
+    switch (pixelFormat)
+    {
+      case Orthanc::PixelFormat_RGB24:
+        uri_ += "/preview";
+        break;
+      
+      case Orthanc::PixelFormat_Grayscale16:
+        uri_ += "/image-uint16";
+        break;
+      
+      case Orthanc::PixelFormat_SignedGrayscale16:
+        uri_ += "/image-int16";
+        break;
+      
+      default:
+        throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
+    }
+  }
+
+  void GetOrthancImageCommand::ProcessHttpAnswer(IMessageEmitter& emitter,
+                                                 const IObserver& receiver,
+                                                 const std::string& answer,
+                                                 const HttpHeaders& answerHeaders) const
+  {
+    Orthanc::MimeType contentType = Orthanc::MimeType_Binary;
+
+    for (HttpHeaders::const_iterator it = answerHeaders.begin(); 
+         it != answerHeaders.end(); ++it)
+    {
+      std::string s;
+      Orthanc::Toolbox::ToLowerCase(s, it->first);
+
+      if (s == "content-type")
+      {
+        contentType = Orthanc::StringToMimeType(it->second);
+        break;
+      }
+    }
+
+    std::auto_ptr<Orthanc::ImageAccessor> image;
+
+    switch (contentType)
+    {
+      case Orthanc::MimeType_Png:
+      {
+        image.reset(new Orthanc::PngReader);
+        dynamic_cast<Orthanc::PngReader&>(*image).ReadFromMemory(answer);
+        break;
+      }
+
+      case Orthanc::MimeType_Pam:
+      {
+        image.reset(new Orthanc::PamReader);
+        dynamic_cast<Orthanc::PamReader&>(*image).ReadFromMemory(answer);
+        break;
+      }
+
+      case Orthanc::MimeType_Jpeg:
+      {
+        image.reset(new Orthanc::JpegReader);
+        dynamic_cast<Orthanc::JpegReader&>(*image).ReadFromMemory(answer);
+        break;
+      }
+
+      default:
+        throw Orthanc::OrthancException(Orthanc::ErrorCode_NetworkProtocol,
+                                        "Unsupported HTTP Content-Type for an image: " + 
+                                        std::string(Orthanc::EnumerationToString(contentType)));
+    }
+
+    if (hasExpectedFormat_)
+    {
+      if (expectedFormat_ == Orthanc::PixelFormat_SignedGrayscale16 &&
+          image->GetFormat() == Orthanc::PixelFormat_Grayscale16)
+      {
+        image->SetFormat(Orthanc::PixelFormat_SignedGrayscale16);
+      }
+
+      if (expectedFormat_ != image->GetFormat())
+      {
+        throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat);
+      }
+    }
+
+    SuccessMessage message(*this, image.release(), contentType);
+    emitter.EmitMessage(receiver, message);
+  }
+}