--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Core/DicomParsing/IDicomTranscoder.cpp	Tue May 12 14:58:24 2020 +0200
@@ -0,0 +1,111 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2020 Osimis S.A., 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 "../PrecompiledHeaders.h"
+#include "IDicomTranscoder.h"
+
+#include "../OrthancException.h"
+
+#include <dcmtk/dcmdata/dcfilefo.h>
+
+namespace Orthanc
+{
+  IDicomTranscoder::TranscodedDicom::TranscodedDicom(bool hasSopInstanceUidChanged) :
+    external_(NULL),
+    hasSopInstanceUidChanged_(hasSopInstanceUidChanged)
+  {
+  }
+  
+
+  IDicomTranscoder::TranscodedDicom*
+  IDicomTranscoder::TranscodedDicom::CreateFromExternal(DcmFileFormat& dicom,
+                                                        bool hasSopInstanceUidChanged)
+  {
+    std::unique_ptr<TranscodedDicom> transcoded(new TranscodedDicom(hasSopInstanceUidChanged));
+    transcoded->external_ = &dicom;
+    return transcoded.release();
+  }        
+
+  
+  IDicomTranscoder::TranscodedDicom*
+  IDicomTranscoder::TranscodedDicom::CreateFromInternal(DcmFileFormat* dicom,
+                                                        bool hasSopInstanceUidChanged)
+  {
+    if (dicom == NULL)
+    {
+      throw OrthancException(ErrorCode_NullPointer);
+    }
+    else
+    {
+      std::unique_ptr<TranscodedDicom> transcoded(new TranscodedDicom(hasSopInstanceUidChanged));
+      transcoded->internal_.reset(dicom);
+      return transcoded.release();
+    }
+  }
+
+  
+  DcmFileFormat& IDicomTranscoder::TranscodedDicom::GetDicom() const
+  {
+    if (internal_.get() != NULL)
+    {
+      return *internal_.get();
+    }
+    else if (external_ != NULL)
+    {
+      return *external_;
+    }
+    else
+    {
+      // Probably results from a call to "ReleaseDicom()"
+      throw OrthancException(ErrorCode_BadSequenceOfCalls);
+    }
+  }
+
+
+  DcmFileFormat* IDicomTranscoder::TranscodedDicom::ReleaseDicom()
+  {
+    if (internal_.get() != NULL)
+    {
+      return internal_.release();
+    }
+    else if (external_ != NULL)
+    {
+      return new DcmFileFormat(*external_);  // Clone
+    }
+    else
+    {
+      // Probably results from a call to "ReleaseDicom()"
+      throw OrthancException(ErrorCode_BadSequenceOfCalls);      
+    }        
+  }
+}