--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/Volumes/VolumeImageSimplePolicy.cpp	Fri Oct 14 15:34:11 2016 +0200
@@ -0,0 +1,118 @@
+/**
+ * Stone of Orthanc
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * In addition, as a special exception, the copyright holders of this
+ * program give permission to link the code of its release with the
+ * OpenSSL project's "OpenSSL" library (or with modified versions of it
+ * that use the same license as the "OpenSSL" library), and distribute
+ * the linked executables. You must obey the GNU General Public License
+ * in all respects for all of the code used other than "OpenSSL". If you
+ * modify file(s) with this exception, you may extend this exception to
+ * your version of the file(s), but you are not obligated to do so. If
+ * you do not wish to do so, delete this exception statement from your
+ * version. If you delete this exception statement from all source files
+ * in the program, then also delete it here.
+ * 
+ * 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#include "VolumeImageSimplePolicy.h"
+
+#include "../Orthanc/Core/Images/ImageProcessing.h"
+
+namespace OrthancStone
+{
+  void VolumeImageSimplePolicy::InitializeInternal(ImageBuffer3D& buffer,
+                                                   ISeriesLoader& loader)
+  {
+    boost::mutex::scoped_lock  lock(mutex_);
+
+    const size_t depth = loader.GetGeometry().GetSliceCount();
+    pendingSlices_.clear();
+
+    for (size_t i = 0; i < depth; i++)
+    {
+      pendingSlices_.insert(i);
+    }
+
+    doneSlices_.clear();
+    doneSlices_.resize(depth, false);
+  }
+
+
+  bool VolumeImageSimplePolicy::DownloadStepInternal(bool& complete,
+                                                     ImageBuffer3D& buffer,
+                                                     ISeriesLoader& loader)
+  {
+    size_t slice;
+
+    {
+      boost::mutex::scoped_lock  lock(mutex_);
+      
+      if (pendingSlices_.empty())
+      {
+        return true;
+      }
+      else
+      {
+        slice = *pendingSlices_.begin();
+        pendingSlices_.erase(slice);
+      }
+    }
+
+    std::auto_ptr<Orthanc::ImageAccessor> frame;
+
+    try
+    {
+      frame.reset(loader.DownloadFrame(slice));
+    }
+    catch (Orthanc::OrthancException&)
+    {
+      // The Orthanc server cannot decode this instance
+      return false;
+    }
+
+    if (frame.get() != NULL)
+    {
+      {
+        ImageBuffer3D::SliceWriter writer(buffer, VolumeProjection_Axial, slice);
+        Orthanc::ImageProcessing::Convert(writer.GetAccessor(), *frame);
+      }
+
+      {
+        boost::mutex::scoped_lock  lock(mutex_);
+
+        doneSlices_[slice] = true;
+
+        if (pendingSlices_.empty())
+        {
+          complete = true;
+          return true;
+        }
+      }
+    }
+      
+    return false;
+  }
+
+
+  bool VolumeImageSimplePolicy::IsFullQualityAxial(size_t slice)
+  {
+    boost::mutex::scoped_lock  lock(mutex_);
+    return doneSlices_[slice];
+  }
+}