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diff --git a/src/FSKSyncChannel_Mixer.h b/src/FSKSyncChannel_Mixer.h
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+/*
+Copyright (c) 2013-2013, John Hurst
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+1. Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+3. The name of the author may not be used to endorse or promote products
+   derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+/*! \file    FSKSyncChannel_Mixer.h
+    \version $Id$
+    \brief   Read WAV files(s), multiplex multiple PCM frame buffers including FSK Sync into one
+*/
+
+#ifndef _FSKSyncChannel_MIXER_H_
+#define _FSKSyncChannel_MIXER_H_
+
+#include <AS_DCP.h>
+#include <KM_error.h>
+#include <PCMDataProviders.h>
+#include <vector>
+
+namespace ASDCP
+{
+
+  //
+  class FSKSyncChannelMixer
+  {
+    typedef std::pair<ui32_t, PCMDataProviderInterface*> InputBus;
+    typedef std::vector<InputBus> OutputList;
+    typedef std::vector<PCMDataProviderInterface*> SourceList;
+
+    SourceList m_inputs;
+    OutputList m_outputs;
+    byte_t m_trackUUID[ASDCP::UUIDlen];
+
+    Result_t OpenRead(const std::string& file, const Rational& PictureRate);
+    Result_t MixInSilenceChannels();
+    Result_t MixInFSKSyncChannel();
+    void clear();
+
+    // functor for deleting
+    struct delete_input
+    {
+        void operator()(PCMDataProviderInterface* i)
+        {
+            delete i;
+        }
+    };
+
+    ASDCP_NO_COPY_CONSTRUCT(FSKSyncChannelMixer);
+
+    protected:
+      PCM::AudioDescriptor m_ADesc;
+      ui32_t m_ChannelCount;
+      ui32_t m_FramesRead;
+
+    public:
+      FSKSyncChannelMixer(const byte_t * trackUUID);
+      virtual ~FSKSyncChannelMixer();
+
+      const ui32_t& ChannelCount() const { return m_ChannelCount; }
+
+      Result_t OpenRead(ui32_t argc, const char** argv, const Rational& PictureRate);
+      Result_t OpenRead(const Kumu::PathList_t& argv, const Rational& PictureRate);
+      Result_t AppendSilenceChannels(const ui32_t& channel_count);
+      Result_t FillAudioDescriptor(PCM::AudioDescriptor& ADesc) const;
+      Result_t Reset();
+      Result_t ReadFrame(PCM::FrameBuffer& OutFB);
+    };
+} // namespace ASDCP
+
+#endif // _FSKSyncChannel_MIXER_H_
+
+//
+// end FSKSyncChannel_Mixer.h
+//