--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Core/DicomParsing/MemoryBufferTranscoder.cpp	Wed May 20 16:42:44 2020 +0200
@@ -0,0 +1,109 @@
+/**
+ * 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 "MemoryBufferTranscoder.h"
+
+#include "../OrthancException.h"
+#include "FromDcmtkBridge.h"
+
+#if !defined(NDEBUG)  // For debugging
+#  include "ParsedDicomFile.h"
+#endif
+
+namespace Orthanc
+{
+  static void CheckTargetSyntax(const std::string& transcoded,
+                                const std::set<DicomTransferSyntax>& allowedSyntaxes)
+  {
+#if !defined(NDEBUG)
+    // Debug mode
+    ParsedDicomFile parsed(transcoded);
+
+    std::string s;
+    DicomTransferSyntax a, b;
+    if (!parsed.LookupTransferSyntax(s) ||
+        !FromDcmtkBridge::LookupOrthancTransferSyntax(a, parsed.GetDcmtkObject()) ||
+        !LookupTransferSyntax(b, s) ||
+        a != b ||
+        allowedSyntaxes.find(a) == allowedSyntaxes.end())
+    {
+      throw OrthancException(
+        ErrorCode_Plugin,
+        "DEBUG - The transcoding plugin has not written to one of the allowed transfer syntaxes");
+    }
+#endif
+  }
+    
+
+  bool MemoryBufferTranscoder::Transcode(DicomImage& target,
+                                         DicomImage& source,
+                                         const std::set<DicomTransferSyntax>& allowedSyntaxes,
+                                         bool allowNewSopInstanceUid)
+  {
+    target.Clear();
+    
+#if !defined(NDEBUG)
+    // Don't run this code in release mode, as it implies parsing the DICOM file
+    DicomTransferSyntax sourceSyntax;
+    if (!FromDcmtkBridge::LookupOrthancTransferSyntax(sourceSyntax, source.GetParsed()))
+    {
+      LOG(ERROR) << "Unsupport transfer syntax for transcoding";
+      return false;
+    }
+    
+    const std::string sourceSopInstanceUid = GetSopInstanceUid(source.GetParsed());
+#endif
+
+    std::string buffer;
+    if (TranscodeBuffer(buffer, source.GetBufferData(), source.GetBufferSize(),
+                        allowedSyntaxes, allowNewSopInstanceUid))
+    {
+      CheckTargetSyntax(buffer, allowedSyntaxes);  // For debug only
+
+      target.AcquireBuffer(buffer);
+      
+#if !defined(NDEBUG)
+      // Only run the sanity check in debug mode
+      CheckTranscoding(target, sourceSyntax, sourceSopInstanceUid,
+                       allowedSyntaxes, allowNewSopInstanceUid);
+#endif
+
+      return true;
+    }
+    else
+    {
+      return false;
+    }
+  }
+}