--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/Loaders/SeriesFramesLoader.h	Mon Dec 09 13:58:37 2019 +0100
@@ -0,0 +1,176 @@
+/**
+ * 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/>.
+ **/
+
+
+#pragma once
+
+#if !defined(ORTHANC_ENABLE_DCMTK)
+#  error The macro ORTHANC_ENABLE_DCMTK must be defined
+#endif
+
+#include "OracleScheduler.h"
+#include "DicomSource.h"
+#include "SeriesOrderedFrames.h"
+#include "ILoaderFactory.h"
+
+namespace OrthancStone
+{  
+  class SeriesFramesLoader : 
+    public ObserverBase<SeriesFramesLoader>,
+    public IObservable
+  {
+  private:
+    class Payload;
+
+    ILoadersContext&                           context_;
+    SeriesOrderedFrames                      frames_;
+    std::string                              dicomDirPath_;
+    boost::shared_ptr<LoadedDicomResources>  dicomDir_;
+
+    SeriesFramesLoader(ILoadersContext& context,
+                       LoadedDicomResources& instances,
+                       const std::string& dicomDirPath,
+                       boost::shared_ptr<LoadedDicomResources> dicomDir);
+
+    void EmitMessage(const Payload& payload,
+                     const Orthanc::ImageAccessor& image);
+
+#if ORTHANC_ENABLE_DCMTK == 1
+    void HandleDicom(const Payload& payload,
+                     Orthanc::ParsedDicomFile& dicom);
+#endif
+    
+    void HandleDicomWebRendered(const Payload& payload,
+                                const std::string& body,
+                                const std::map<std::string, std::string>& headers);
+
+#if ORTHANC_ENABLE_DCMTK == 1
+    void Handle(const ParseDicomSuccessMessage& message);
+#endif
+
+    void Handle(const GetOrthancImageCommand::SuccessMessage& message);
+
+    void Handle(const GetOrthancWebViewerJpegCommand::SuccessMessage& message);
+
+    void Handle(const OrthancRestApiCommand::SuccessMessage& message);
+
+    void Handle(const HttpCommand::SuccessMessage& message);
+
+    void GetPreviewWindowing(float& center,
+                             float& width,
+                             size_t index) const;
+
+  public:
+    class FrameLoadedMessage : public OriginMessage<SeriesFramesLoader>
+    {
+      ORTHANC_STONE_MESSAGE(__FILE__, __LINE__);
+
+    private:
+      size_t                          frameIndex_;
+      unsigned int                    quality_;
+      const Orthanc::ImageAccessor&   image_;
+      const Orthanc::DicomMap&        instance_;
+      const DicomInstanceParameters&  parameters_;
+      Orthanc::IDynamicObject*        userPayload_; // Ownership is maintained by the caller
+
+    public:
+      FrameLoadedMessage(const SeriesFramesLoader& loader,
+                         size_t frameIndex,
+                         unsigned int quality,
+                         const Orthanc::ImageAccessor& image,
+                         const Orthanc::DicomMap& instance,
+                         const DicomInstanceParameters&  parameters,
+                         Orthanc::IDynamicObject* userPayload) :
+        OriginMessage(loader),
+        frameIndex_(frameIndex),
+        quality_(quality),
+        image_(image),
+        instance_(instance),
+        parameters_(parameters),
+        userPayload_(userPayload)
+      {
+      }
+
+      size_t GetFrameIndex() const
+      {
+        return frameIndex_;
+      }
+
+      unsigned int GetQuality() const
+      {
+        return quality_;
+      }
+
+      const Orthanc::ImageAccessor& GetImage() const
+      {
+        return image_;
+      }
+
+      const Orthanc::DicomMap& GetInstance() const
+      {
+        return instance_;
+      }
+
+      const DicomInstanceParameters& GetInstanceParameters() const
+      {
+        return parameters_;
+      }
+
+      bool HasUserPayload() const
+      {
+        return userPayload_ != NULL;
+      }
+
+      Orthanc::IDynamicObject& GetUserPayload() const;
+    };
+
+
+    class Factory : public ILoaderFactory
+    {
+    private:
+      LoadedDicomResources&                    instances_;
+      std::string                              dicomDirPath_;
+      boost::shared_ptr<LoadedDicomResources>  dicomDir_;
+
+    public:
+      // No "const" because "LoadedDicomResources::GetResource()" will call "Flatten()"
+      Factory(LoadedDicomResources& instances) :
+      instances_(instances)
+      {
+      }
+
+      void SetDicomDir(const std::string& dicomDirPath,
+                       boost::shared_ptr<LoadedDicomResources> dicomDir);
+
+      virtual boost::shared_ptr<IObserver> Create(ILoadersContext::ILock& context);
+    };
+
+    const SeriesOrderedFrames& GetOrderedFrames() const
+    {
+      return frames_;
+    }
+
+    void ScheduleLoadFrame(int priority,
+                           const DicomSource& source,
+                           size_t index,
+                           unsigned int quality,
+                           Orthanc::IDynamicObject* userPayload /* transfer ownership */);
+  };
+}