--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/Loaders/LoaderCache.cpp	Wed Jul 24 14:27:06 2019 +0200
@@ -0,0 +1,217 @@
+/**
+ * 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 "LoaderCache.h"
+
+#include "OrthancSeriesVolumeProgressiveLoader.h"
+#include "OrthancMultiframeVolumeLoader.h"
+#include "DicomStructureSetLoader.h"
+
+#include "../Messages/LockingEmitter.h"
+#include "../Volumes/DicomVolumeImage.h"
+#include "../Volumes/DicomVolumeImageMPRSlicer.h"
+
+#include <Core/OrthancException.h>
+#include <Core/Toolbox.h>
+
+namespace OrthancStone
+{
+#if ORTHANC_ENABLE_WASM == 1
+  LoaderCache::LoaderCache(IOracle& oracle)
+    : oracle_(oracle)
+  {
+
+  }
+#else
+  LoaderCache::LoaderCache(IOracle& oracle, LockingEmitter& lockingEmitter)
+    : oracle_(oracle)
+    , lockingEmitter_(lockingEmitter)
+  {
+  }
+#endif
+
+  boost::shared_ptr<OrthancStone::OrthancSeriesVolumeProgressiveLoader> 
+    LoaderCache::GetSeriesVolumeProgressiveLoader(std::string seriesUuid)
+  {
+    try
+    {
+      // normalize keys a little
+      seriesUuid = Orthanc::Toolbox::StripSpaces(seriesUuid);
+      Orthanc::Toolbox::ToLowerCase(seriesUuid);
+
+      // find in cache
+      if (seriesVolumeProgressiveLoaders_.find(seriesUuid) == seriesVolumeProgressiveLoaders_.end())
+      {
+        boost::shared_ptr<DicomVolumeImage> volumeImage(new DicomVolumeImage);
+        boost::shared_ptr<OrthancSeriesVolumeProgressiveLoader> loader;
+
+        {
+#if ORTHANC_ENABLE_WASM == 1
+          loader.reset(new OrthancSeriesVolumeProgressiveLoader(volumeImage, GetParent()->GetOracleRef(), GetParent()->GetOracleRef()));
+#else
+          LockingEmitter::WriterLock lock(lockingEmitter_);
+          loader.reset(new OrthancSeriesVolumeProgressiveLoader(volumeImage, oracle_, lock.GetOracleObservable()));
+#endif
+          loader->LoadSeries(seriesUuid);
+        }
+        seriesVolumeProgressiveLoaders_[seriesUuid] = loader;
+      }
+      return seriesVolumeProgressiveLoaders_[seriesUuid];
+    }
+    catch (const Orthanc::OrthancException& e)
+    {
+      if (e.HasDetails())
+      {
+        LOG(ERROR) << "OrthancException in LoaderCache: " << e.What() << " Details: " << e.GetDetails();
+      }
+      else
+      {
+        LOG(ERROR) << "OrthancException in LoaderCache: " << e.What();
+      }
+      throw;
+    }
+    catch (const std::exception& e)
+    {
+      LOG(ERROR) << "std::exception in LoaderCache: " << e.what();
+      throw;
+    }
+    catch (...)
+    {
+      LOG(ERROR) << "Unknown exception in LoaderCache";
+      throw;
+    }
+  }
+
+  boost::shared_ptr<DicomVolumeImageMPRSlicer> LoaderCache::GetMultiframeDicomVolumeImageMPRSlicer(std::string instanceUuid)
+  {
+    try
+    {
+      // normalize keys a little
+      instanceUuid = Orthanc::Toolbox::StripSpaces(instanceUuid);
+      Orthanc::Toolbox::ToLowerCase(instanceUuid);
+
+      // find in cache
+      if (dicomVolumeImageMPRSlicers_.find(instanceUuid) == dicomVolumeImageMPRSlicers_.end())
+      {
+        boost::shared_ptr<DicomVolumeImage> volumeImage(new DicomVolumeImage);
+        boost::shared_ptr<OrthancMultiframeVolumeLoader> loader;
+
+        {
+#if ORTHANC_ENABLE_WASM == 1
+          loader.reset(new OrthancMultiframeVolumeLoader(volumeImage, GetParent()->GetOracleRef(), GetParent()->GetOracleRef()));
+#else
+          LockingEmitter::WriterLock lock(lockingEmitter_);
+          loader.reset(new OrthancMultiframeVolumeLoader(volumeImage, oracle_, lock.GetOracleObservable()));
+#endif
+          loader->LoadInstance(instanceUuid);
+        }
+        multiframeVolumeLoaders_[instanceUuid] = loader;
+        boost::shared_ptr<DicomVolumeImageMPRSlicer> mprSlicer(new DicomVolumeImageMPRSlicer(volumeImage));
+        dicomVolumeImageMPRSlicers_[instanceUuid] = mprSlicer;
+      }
+      return dicomVolumeImageMPRSlicers_[instanceUuid];
+    }
+    catch (const Orthanc::OrthancException& e)
+    {
+      if (e.HasDetails())
+      {
+        LOG(ERROR) << "OrthancException in LoaderCache: " << e.What() << " Details: " << e.GetDetails();
+      }
+      else
+      {
+        LOG(ERROR) << "OrthancException in LoaderCache: " << e.What();
+      }
+      throw;
+    }
+    catch (const std::exception& e)
+    {
+      LOG(ERROR) << "std::exception in LoaderCache: " << e.what();
+      throw;
+    }
+    catch (...)
+    {
+      LOG(ERROR) << "Unknown exception in LoaderCache";
+      throw;
+    }
+  }
+  
+  boost::shared_ptr<DicomStructureSetLoader> LoaderCache::GetDicomStructureSetLoader(std::string instanceUuid)
+  {
+    try
+    {
+      // normalize keys a little
+      instanceUuid = Orthanc::Toolbox::StripSpaces(instanceUuid);
+      Orthanc::Toolbox::ToLowerCase(instanceUuid);
+
+      // find in cache
+      if (dicomStructureSetLoaders_.find(instanceUuid) == dicomStructureSetLoaders_.end())
+      {
+        boost::shared_ptr<DicomStructureSetLoader> loader;
+
+        {
+#if ORTHANC_ENABLE_WASM == 1
+          loader.reset(new DicomStructureSetLoader(volumeImage, GetParent()->GetOracleRef(), GetParent()->GetOracleRef()));
+#else
+          LockingEmitter::WriterLock lock(lockingEmitter_);
+          loader.reset(new DicomStructureSetLoader(oracle_, lock.GetOracleObservable()));
+#endif
+          loader->LoadInstance(instanceUuid);
+        }
+        dicomStructureSetLoaders_[instanceUuid] = loader;
+      }
+      return dicomStructureSetLoaders_[instanceUuid];
+    }
+    catch (const Orthanc::OrthancException& e)
+    {
+      if (e.HasDetails())
+      {
+        LOG(ERROR) << "OrthancException in LoaderCache: " << e.What() << " Details: " << e.GetDetails();
+      }
+      else
+      {
+        LOG(ERROR) << "OrthancException in LoaderCache: " << e.What();
+      }
+      throw;
+    }
+    catch (const std::exception& e)
+    {
+      LOG(ERROR) << "std::exception in LoaderCache: " << e.what();
+      throw;
+    }
+    catch (...)
+    {
+      LOG(ERROR) << "Unknown exception in LoaderCache";
+      throw;
+    }
+  }
+
+
+  void LoaderCache::ClearCache()
+  {
+#if ORTHANC_ENABLE_WASM != 1
+    LockingEmitter::WriterLock lock(lockingEmitter_);
+#endif
+    seriesVolumeProgressiveLoaders_.clear();
+    multiframeVolumeLoaders_.clear();
+    dicomVolumeImageMPRSlicers_.clear();
+    dicomStructureSetLoaders_.clear();
+  }
+
+}