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diff --git a/lib/libUPnP/Platinum/Source/Extras/PltRingBufferStream.h b/lib/libUPnP/Platinum/Source/Extras/PltRingBufferStream.h
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+++ b/lib/libUPnP/Platinum/Source/Extras/PltRingBufferStream.h
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+/*****************************************************************
+|
+|   Platinum - Ring buffer stream
+|
+| Copyright (c) 2004-2010, Plutinosoft, LLC.
+| All rights reserved.
+| http://www.plutinosoft.com
+|
+| 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 2
+| of the License, or (at your option) any later version.
+|
+| OEMs, ISVs, VARs and other distributors that combine and 
+| distribute commercially licensed software with Platinum software
+| and do not wish to distribute the source code for the commercially
+| licensed software under version 2, or (at your option) any later
+| version, of the GNU General Public License (the "GPL") must enter
+| into a commercial license agreement with Plutinosoft, LLC.
+| licensing@plutinosoft.com
+|  
+| 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; see the file LICENSE.txt. If not, write to
+| the Free Software Foundation, Inc., 
+| 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+| http://www.gnu.org/licenses/gpl-2.0.html
+|
+****************************************************************/
+
+#ifndef _PLT_RING_BUFFER_STREAM_H_
+#define _PLT_RING_BUFFER_STREAM_H_
+
+/*----------------------------------------------------------------------
+|   includes
++---------------------------------------------------------------------*/
+#include "Neptune.h"
+
+/*----------------------------------------------------------------------
+|   PLT_RingBufferStream class
++---------------------------------------------------------------------*/
+class PLT_RingBufferStream : public NPT_DelegatingInputStream,   
+                             public NPT_DelegatingOutputStream
+{
+public:
+    PLT_RingBufferStream(NPT_Size buffer_size = 4096, bool blocking = true);
+    PLT_RingBufferStream(NPT_RingBufferReference& buffer, bool blocking = true);
+    ~PLT_RingBufferStream() override;
+    
+    // methods
+    bool IsAborted() { return m_Aborted; }
+    
+    // NPT_InputStream methods
+    NPT_Result Read(void*     buffer, 
+                    NPT_Size  bytes_to_read, 
+                    NPT_Size* bytes_read = NULL) override;
+    NPT_Result GetSize(NPT_LargeSize& size) override  {
+        NPT_COMPILER_UNUSED(size);
+        return NPT_ERROR_NOT_SUPPORTED;
+    }
+    NPT_Result GetSpace(NPT_LargeSize& space) { 
+        NPT_AutoLock autoLock(m_Lock);
+        space = m_RingBuffer->GetSpace();
+        return NPT_SUCCESS;
+    }
+    NPT_Result GetAvailable(NPT_LargeSize& available) override { 
+        NPT_AutoLock autoLock(m_Lock);
+        available = m_RingBuffer->GetAvailable();
+        return NPT_SUCCESS;
+    }
+
+    // NPT_OutputStream methods
+    NPT_Result Write(const void* buffer, 
+                     NPT_Size    bytes_to_write, 
+                     NPT_Size*   bytes_written = NULL) override;
+    NPT_Result Flush() override;
+    NPT_Result SetEOS();
+    NPT_Result Abort();
+
+protected:
+    // NPT_DelegatingInputStream methods
+    NPT_Result InputSeek(NPT_Position offset) override {
+        NPT_COMPILER_UNUSED(offset);
+        return NPT_ERROR_NOT_SUPPORTED;
+    }
+    NPT_Result InputTell(NPT_Position& offset) override { 
+        NPT_AutoLock autoLock(m_Lock);
+        offset = m_TotalBytesRead; 
+        return NPT_SUCCESS;
+    }
+
+    // NPT_DelegatingOutputStream methods
+    NPT_Result OutputSeek(NPT_Position offset) override {
+        NPT_COMPILER_UNUSED(offset);
+        return NPT_ERROR_NOT_SUPPORTED;
+    }
+    NPT_Result OutputTell(NPT_Position& offset) override {
+        NPT_AutoLock autoLock(m_Lock);
+        offset = m_TotalBytesWritten; 
+        return NPT_SUCCESS;
+    }
+
+private:
+    NPT_RingBufferReference m_RingBuffer;
+    NPT_Offset              m_TotalBytesRead;
+    NPT_Offset              m_TotalBytesWritten;
+    NPT_Mutex               m_Lock;
+    bool                    m_Blocking;
+    bool                    m_Eos;
+    bool                    m_Aborted;
+};
+
+typedef NPT_Reference<PLT_RingBufferStream> PLT_RingBufferStreamReference;
+
+#endif // _PLT_RING_BUFFER_STREAM_H_