--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Core/Images/PngWriter.h	Fri Sep 04 16:36:18 2015 +0200
@@ -0,0 +1,92 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2015 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/>.
+ **/
+
+
+#pragma once
+
+#include "ImageAccessor.h"
+
+#include <boost/shared_ptr.hpp>
+#include <string>
+
+namespace Orthanc
+{
+  class PngWriter
+  {
+  private:
+    struct PImpl;
+    boost::shared_ptr<PImpl> pimpl_;
+
+    void Compress(unsigned int width,
+                  unsigned int height,
+                  unsigned int pitch,
+                  PixelFormat format);
+
+    void Prepare(unsigned int width,
+                 unsigned int height,
+                 unsigned int pitch,
+                 PixelFormat format,
+                 const void* buffer);
+
+  public:
+    PngWriter();
+
+    ~PngWriter();
+
+    void WriteToFile(const char* filename,
+                     unsigned int width,
+                     unsigned int height,
+                     unsigned int pitch,
+                     PixelFormat format,
+                     const void* buffer);
+
+    void WriteToMemory(std::string& png,
+                       unsigned int width,
+                       unsigned int height,
+                       unsigned int pitch,
+                       PixelFormat format,
+                       const void* buffer);
+
+    void WriteToFile(const char* filename,
+                     const ImageAccessor& accessor)
+    {
+      WriteToFile(filename, accessor.GetWidth(), accessor.GetHeight(),
+                  accessor.GetPitch(), accessor.GetFormat(), accessor.GetConstBuffer());
+    }
+
+    void WriteToMemory(std::string& png,
+                       const ImageAccessor& accessor)
+    {
+      WriteToMemory(png, accessor.GetWidth(), accessor.GetHeight(),
+                    accessor.GetPitch(), accessor.GetFormat(), accessor.GetConstBuffer());
+    }
+  };
+}