/*
Copyright (c) 2004-2016, John Hurst
All rights reserved.

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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,
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*/
/*! \file    AS_DCP_IAB.cpp
    \version $Id$
    \brief   AS-DCP library, IAB essence reader and writer implementation
*/


#include <iostream>

#include "AS_DCP.h"
#include "AS_DCP_internal.h"

namespace ASDCP
{
namespace IAB
{
  static std::string IAB_PACKAGE_LABEL = "File Package: SMPTE-GC frame wrapping of IAB data";
  static std::string IAB_DEF_LABEL = "IAB Data Track";
  static byte_t IAB_ESSENCE_CODING[SMPTE_UL_LENGTH] = { 0x06, 0x0e, 0x2b, 0x34, 0x04, 0x01, 0x01, 0x05,
                                                          0x0e, 0x09, 0x06, 0x04, 0x00, 0x00, 0x00, 0x00 };
} // namespace IAB
} // namespace ASDCP

//
std::ostream&
ASDCP::IAB::operator << (std::ostream& strm, const IABDescriptor& ADesc)
{
  char str_buf[40];
  strm << "        EditRate: " << ADesc.EditRate.Numerator << "/" << ADesc.EditRate.Denominator << std::endl;
  strm << " ContainerDuration: " << (unsigned) ADesc.ContainerDuration << std::endl;
  strm << " DataEssenceCoding: " << UL(ADesc.DataEssenceCoding).EncodeString(str_buf, 40) << std::endl;
  strm << "      ImmersiveAudioVersion: " << (unsigned) ADesc.ImmersiveAudioVersion << std::endl;
  strm << "   MaxChannelCount: " << (unsigned) ADesc.MaxChannelCount << std::endl;
  strm << "    MaxObjectCount: " << (unsigned) ADesc.MaxObjectCount << std::endl;
  strm << "           ImmersiveAudioID: " << UUID(ADesc.ImmersiveAudioID).EncodeString(str_buf, 40) << std::endl;
  strm << "        FirstFrame: " << (unsigned) ADesc.FirstFrame << std::endl;
  return strm;
}

//
void
ASDCP::IAB::IADataEssenceSubDescriptorDump(const IABDescriptor& ADesc, FILE* stream)
{
  char str_buf[40];
  char ImmersiveAudioID_buf[40];
  if ( stream == 0 )
    stream = stderr;

  fprintf(stream, "\
          EditRate: %d/%d\n\
   ContainerDuration: %u\n\
   DataEssenceCoding: %s\n\
        ImmersiveAudioVersion: %u\n\
     MaxChannelCount: %u\n\
      MaxObjectCount: %u\n\
             ImmersiveAudioID: %s\n\
           FirsFrame: %u\n",
          ADesc.EditRate.Numerator, ADesc.EditRate.Denominator,
          ADesc.ContainerDuration,
          UL(ADesc.DataEssenceCoding).EncodeString(str_buf, 40),
          ADesc.ImmersiveAudioVersion,
          ADesc.MaxChannelCount,
          ADesc.MaxObjectCount,
          UUID(ADesc.ImmersiveAudioID).EncodeString(ImmersiveAudioID_buf, 40),
          ADesc.FirstFrame);
}

//
bool
ASDCP::IAB::IsIAB(const std::string& filename)
{
    // TODO
    // For now use an IAB extension
    bool result = ( 0 == (std::string("atmos").compare(Kumu::PathGetExtension(filename))) );
    return result;
}


//------------------------------------------------------------------------------------------

typedef std::list<MXF::InterchangeObject*> SubDescriptorList_t;

class ASDCP::IAB::MXFReader::h__Reader : public ASDCP::h__ASDCPReader
{
  MXF::IADataEssenceDescriptor* m_EssenceDescriptor;
  MXF::IADataEssenceSubDescriptor* m_EssenceSubDescriptor;

  KM_NO_COPY_CONSTRUCT(h__Reader);
  h__Reader();

 public:
  ASDCP::DCData::DCDataDescriptor m_DDesc;
  IABDescriptor m_ADesc;

  h__Reader(const Dictionary& d) :
    ASDCP::h__ASDCPReader(d),  m_EssenceDescriptor(0), m_EssenceSubDescriptor(0) {}
  virtual ~h__Reader() {}
  Result_t    OpenRead(const std::string&);
  Result_t    ReadFrame(ui32_t, FrameBuffer&, AESDecContext*, HMACContext*);
  Result_t    MD_to_DCData_DDesc(ASDCP::DCData::DCDataDescriptor& DDesc);
  Result_t    MD_to_IAB_ADesc(IAB::IABDescriptor& ADesc);
};

ASDCP::Result_t
ASDCP::IAB::MXFReader::h__Reader::MD_to_DCData_DDesc(ASDCP::DCData::DCDataDescriptor& DDesc)
{
  ASDCP_TEST_NULL(m_EssenceDescriptor);
  MXF::IADataEssenceDescriptor* DDescObj = m_EssenceDescriptor;
  DDesc.EditRate = DDescObj->SampleRate;
  assert(DDescObj->ContainerDuration <= 0xFFFFFFFFL);
  DDesc.ContainerDuration = static_cast<ui32_t>(DDescObj->ContainerDuration);
  memcpy(DDesc.DataEssenceCoding, DDescObj->DataEssenceCoding.Value(), SMPTE_UL_LENGTH);
  return RESULT_OK;
}

ASDCP::Result_t
ASDCP::IAB::MXFReader::h__Reader::MD_to_IAB_ADesc(IAB::IABDescriptor& ADesc)
{
  ASDCP_TEST_NULL(m_EssenceSubDescriptor);
  Result_t result = MD_to_DCData_DDesc(ADesc);
  if( ASDCP_SUCCESS(result) )
  {
    MXF::IADataEssenceSubDescriptor* ADescObj = m_EssenceSubDescriptor;
    ADesc.MaxChannelCount = ADescObj->MaxChannelCount;
    ADesc.MaxObjectCount = ADescObj->MaxObjectCount;
    ::memcpy(ADesc.ImmersiveAudioID, ADescObj->ImmersiveAudioID.Value(), UUIDlen);
    ADesc.ImmersiveAudioVersion = ADescObj->ImmersiveAudioVersion;
    ADesc.FirstFrame = ADescObj->FirstFrame;
  }
  return result;
}

//
//
ASDCP::Result_t
ASDCP::IAB::MXFReader::h__Reader::OpenRead(const std::string& filename)
{
  Result_t result = OpenMXFRead(filename);
  m_EssenceDescriptor = 0;

  if ( KM_SUCCESS(result) )
    {
      InterchangeObject* iObj = 0;
      result = m_HeaderPart.GetMDObjectByType(OBJ_TYPE_ARGS(IADataEssenceDescriptor), &iObj);

      if ( KM_SUCCESS(result) )
	{
	  m_EssenceDescriptor = static_cast<MXF::IADataEssenceDescriptor*>(iObj);
	}
    }

  if ( m_EssenceDescriptor == 0 )
    {
      DefaultLogSink().Error("DCDataDescriptor object not found in IAB file.\n");
      result = RESULT_FORMAT;
    }

  if ( KM_SUCCESS(result) )
    {
      result = MD_to_DCData_DDesc(m_DDesc);
    }

  // check for sample/frame rate sanity
  if ( ASDCP_SUCCESS(result)
       && m_DDesc.EditRate != EditRate_24
       && m_DDesc.EditRate != EditRate_25
       && m_DDesc.EditRate != EditRate_30
       && m_DDesc.EditRate != EditRate_48
       && m_DDesc.EditRate != EditRate_50
       && m_DDesc.EditRate != EditRate_60
       && m_DDesc.EditRate != EditRate_96
       && m_DDesc.EditRate != EditRate_100
       && m_DDesc.EditRate != EditRate_120
       && m_DDesc.EditRate != EditRate_192
       && m_DDesc.EditRate != EditRate_200
       && m_DDesc.EditRate != EditRate_240 )
  {
    DefaultLogSink().Error("DC Data file EditRate is not a supported value: %d/%d\n", // lu
                           m_DDesc.EditRate.Numerator, m_DDesc.EditRate.Denominator);

    return RESULT_FORMAT;
  }

  if( ASDCP_SUCCESS(result) )
    {
      
      if (NULL == m_EssenceSubDescriptor)
	{
	  InterchangeObject* iObj = NULL;
	  result = m_HeaderPart.GetMDObjectByType(OBJ_TYPE_ARGS(IADataEssenceSubDescriptor), &iObj);
	  m_EssenceSubDescriptor = static_cast<MXF::IADataEssenceSubDescriptor*>(iObj);
	  
	  if ( iObj == 0 )
	    {
	      DefaultLogSink().Error("IADataEssenceSubDescriptor object not found.\n");
	      return RESULT_FORMAT;
	    }
	}

      if ( ASDCP_SUCCESS(result) )
	{
	  result = MD_to_IAB_ADesc(m_ADesc);
	}
    }

  return result;
}

//
ASDCP::Result_t
ASDCP::IAB::MXFReader::h__Reader::ReadFrame(ui32_t FrameNum, FrameBuffer& FrameBuf,
					      AESDecContext* Ctx, HMACContext* HMAC)
{
  if ( ! m_File.IsOpen() )
    return RESULT_INIT;

  assert(m_Dict);
  return ReadEKLVFrame(FrameNum, FrameBuf, m_Dict->ul(MDD_IADataElement), Ctx, HMAC);
}


//------------------------------------------------------------------------------------------

ASDCP::IAB::MXFReader::MXFReader()
{
  m_Reader = new h__Reader(IABSMPTEDict());
}


ASDCP::IAB::MXFReader::~MXFReader()
{
  if ( m_Reader && m_Reader->m_File.IsOpen() )
    m_Reader->Close();
}

// Warning: direct manipulation of MXF structures can interfere
// with the normal operation of the wrapper.  Caveat emptor!
//
ASDCP::MXF::OP1aHeader&
ASDCP::IAB::MXFReader::OP1aHeader()
{
  if ( m_Reader.empty() )
  {
    assert(g_OP1aHeader);
    return *g_OP1aHeader;
  }

  return m_Reader->m_HeaderPart;
}

// Warning: direct manipulation of MXF structures can interfere
// with the normal operation of the wrapper.  Caveat emptor!
//
ASDCP::MXF::OPAtomIndexFooter&
ASDCP::IAB::MXFReader::OPAtomIndexFooter()
{
  if ( m_Reader.empty() )
  {
    assert(g_OPAtomIndexFooter);
    return *g_OPAtomIndexFooter;
  }

  return m_Reader->m_IndexAccess;
}

// Warning: direct manipulation of MXF structures can interfere
// with the normal operation of the wrapper.  Caveat emptor!
//
ASDCP::MXF::RIP&
ASDCP::IAB::MXFReader::RIP()
{
  if ( m_Reader.empty() )
    {
      assert(g_RIP);
      return *g_RIP;
    }

  return m_Reader->m_RIP;
}

// Open the file for reading. The file must exist. Returns error if the
// operation cannot be completed.
ASDCP::Result_t
ASDCP::IAB::MXFReader::OpenRead(const std::string& filename) const
{
  return m_Reader->OpenRead(filename);
}

//
ASDCP::Result_t
ASDCP::IAB::MXFReader::ReadFrame(ui32_t FrameNum, DCData::FrameBuffer& FrameBuf,
                                    AESDecContext* Ctx, HMACContext* HMAC) const
{
  if ( m_Reader && m_Reader->m_File.IsOpen() )
    return m_Reader->ReadFrame(FrameNum, FrameBuf, Ctx, HMAC);

  return RESULT_INIT;
}

ASDCP::Result_t
ASDCP::IAB::MXFReader::LocateFrame(ui32_t FrameNum, Kumu::fpos_t& streamOffset, i8_t& temporalOffset, i8_t& keyFrameOffset) const
{
    return m_Reader->LocateFrame(FrameNum, streamOffset, temporalOffset, keyFrameOffset);
}


// Fill the struct with the values from the file's header.
// Returns RESULT_INIT if the file is not open.
ASDCP::Result_t
ASDCP::IAB::MXFReader::FillIABDescriptor(IABDescriptor& ADesc) const
{
  if ( m_Reader && m_Reader->m_File.IsOpen() )
  {
    ADesc = m_Reader->m_ADesc;
    return RESULT_OK;
  }

  return RESULT_INIT;
}


// Fill the struct with the values from the file's header.
// Returns RESULT_INIT if the file is not open.
ASDCP::Result_t
ASDCP::IAB::MXFReader::FillWriterInfo(WriterInfo& Info) const
{
  if ( m_Reader && m_Reader->m_File.IsOpen() )
  {
    Info = m_Reader->m_Info;
    return RESULT_OK;
  }

  return RESULT_INIT;
}

//
void
ASDCP::IAB::MXFReader::DumpHeaderMetadata(FILE* stream) const
{
  if ( m_Reader->m_File.IsOpen() )
    m_Reader->m_HeaderPart.Dump(stream);
}

//
void
ASDCP::IAB::MXFReader::DumpIndex(FILE* stream) const
{
  if ( m_Reader->m_File.IsOpen() )
    m_Reader->m_IndexAccess.Dump(stream);
}

//
ASDCP::Result_t
ASDCP::IAB::MXFReader::Close() const
{
  if ( m_Reader && m_Reader->m_File.IsOpen() )
    {
      m_Reader->Close();
      return RESULT_OK;
    }

  return RESULT_INIT;
}


//------------------------------------------------------------------------------------------

//
class ASDCP::IAB::MXFWriter::h__Writer : public ASDCP::h__ASDCPWriter
{
  ASDCP::DCData::DCDataDescriptor m_DDesc;
  byte_t  m_EssenceUL[SMPTE_UL_LENGTH];
  MXF::IADataEssenceSubDescriptor* m_EssenceSubDescriptor;

  ASDCP_NO_COPY_CONSTRUCT(h__Writer);
  h__Writer();

 public:
  IABDescriptor m_ADesc;

  h__Writer(const Dictionary& d) : ASDCP::h__ASDCPWriter(d),
				   m_EssenceSubDescriptor(0), m_ADesc() {
    memset(m_EssenceUL, 0, SMPTE_UL_LENGTH);
  }

  virtual ~h__Writer(){}

  Result_t OpenWrite(const std::string&, ui32_t HeaderSize, const IABDescriptor& ADesc);
  Result_t SetSourceStream(const DCData::DCDataDescriptor&, const byte_t*, const std::string&, const std::string&);
  Result_t WriteFrame(const FrameBuffer&, AESEncContext* = 0, HMACContext* = 0);
  Result_t Finalize();
  Result_t DCData_DDesc_to_MD(ASDCP::DCData::DCDataDescriptor& DDesc);
  Result_t IAB_ADesc_to_MD(const IABDescriptor& ADesc);
};

//
ASDCP::Result_t
ASDCP::IAB::MXFWriter::h__Writer::DCData_DDesc_to_MD(ASDCP::DCData::DCDataDescriptor& DDesc)
{
  ASDCP_TEST_NULL(m_EssenceDescriptor);
  MXF::IADataEssenceDescriptor* DDescObj = static_cast<MXF::IADataEssenceDescriptor *>(m_EssenceDescriptor);

  DDescObj->SampleRate = DDesc.EditRate;
  DDescObj->ContainerDuration = DDesc.ContainerDuration;
  DDescObj->DataEssenceCoding.Set(DDesc.DataEssenceCoding);  
  return RESULT_OK;
}

//
ASDCP::Result_t
ASDCP::IAB::MXFWriter::h__Writer::IAB_ADesc_to_MD(const IABDescriptor& ADesc)
{
  ASDCP_TEST_NULL(m_EssenceDescriptor);
  ASDCP_TEST_NULL(m_EssenceSubDescriptor);
  MXF::IADataEssenceSubDescriptor * ADescObj = m_EssenceSubDescriptor;
  ADescObj->MaxChannelCount = ADesc.MaxChannelCount;
  ADescObj->MaxObjectCount = ADesc.MaxObjectCount;
  ADescObj->ImmersiveAudioID.Set(ADesc.ImmersiveAudioID);
  ADescObj->ImmersiveAudioVersion = ADesc.ImmersiveAudioVersion;
  ADescObj->FirstFrame = ADesc.FirstFrame;
  return RESULT_OK;
}

//
ASDCP::Result_t
ASDCP::IAB::MXFWriter::h__Writer::OpenWrite(const std::string& filename, ui32_t HeaderSize, const IABDescriptor& ADesc)
{
  if ( ! m_State.Test_BEGIN() )
    return RESULT_STATE;

  Result_t result = m_File.OpenWrite(filename);

  if ( ASDCP_SUCCESS(result) )
    {
      m_HeaderSize = HeaderSize;
      m_EssenceDescriptor = new MXF::IADataEssenceDescriptor(m_Dict);
      m_EssenceSubDescriptor = new IADataEssenceSubDescriptor(m_Dict);
      SubDescriptorList_t subDescriptors;
      subDescriptors.push_back(m_EssenceSubDescriptor);

      SubDescriptorList_t::const_iterator sDObj;
      SubDescriptorList_t::const_iterator lastDescriptor = subDescriptors.end();
      for (sDObj = subDescriptors.begin(); sDObj != lastDescriptor; ++sDObj)
      {
          m_EssenceSubDescriptorList.push_back(*sDObj);
          GenRandomValue((*sDObj)->InstanceUID);
          m_EssenceDescriptor->SubDescriptors.push_back((*sDObj)->InstanceUID);
      }
      result = m_State.Goto_INIT();
    }

  if ( ASDCP_FAILURE(result) )
    delete m_EssenceSubDescriptor;

  if ( ASDCP_SUCCESS(result) )
  {
      m_ADesc = ADesc;
      memcpy(m_ADesc.DataEssenceCoding, IAB_ESSENCE_CODING, SMPTE_UL_LENGTH);
      result = IAB_ADesc_to_MD(m_ADesc);
  }

  return result;
}

//
ASDCP::Result_t
ASDCP::IAB::MXFWriter::h__Writer::SetSourceStream(ASDCP::DCData::DCDataDescriptor const& DDesc,
						    const byte_t * essenceCoding,
						    const std::string& packageLabel,
						    const std::string& defLabel)
{
  if ( ! m_State.Test_INIT() )
    return RESULT_STATE;

  if ( DDesc.EditRate != EditRate_24
       && DDesc.EditRate != EditRate_25
       && DDesc.EditRate != EditRate_30
       && DDesc.EditRate != EditRate_48
       && DDesc.EditRate != EditRate_50
       && DDesc.EditRate != EditRate_60
       && DDesc.EditRate != EditRate_96
       && DDesc.EditRate != EditRate_100
       && DDesc.EditRate != EditRate_120
       && DDesc.EditRate != EditRate_192
       && DDesc.EditRate != EditRate_200
       && DDesc.EditRate != EditRate_240 )
  {
    DefaultLogSink().Error("DCDataDescriptor.EditRate is not a supported value: %d/%d\n",
                           DDesc.EditRate.Numerator, DDesc.EditRate.Denominator);
    return RESULT_RAW_FORMAT;
  }

  assert(m_Dict);
  m_DDesc = DDesc;
  if (NULL != essenceCoding)
      memcpy(m_DDesc.DataEssenceCoding, essenceCoding, SMPTE_UL_LENGTH);
  Result_t result = DCData_DDesc_to_MD(m_DDesc);

  if ( ASDCP_SUCCESS(result) )
  {
    memcpy(m_EssenceUL, m_Dict->ul(MDD_IADataElement), SMPTE_UL_LENGTH);
    m_EssenceUL[SMPTE_UL_LENGTH-1] = 1; // first (and only) essence container
    result = m_State.Goto_READY();
  }

  if ( ASDCP_SUCCESS(result) )
  {
    ui32_t TCFrameRate = m_DDesc.EditRate.Numerator;

    result = WriteASDCPHeader(packageLabel, UL(m_Dict->ul(MDD_MXF_GC_IAData_Frame_Wrapped)),
			      defLabel, UL(m_EssenceUL), UL(m_Dict->ul(MDD_DataDataDef)),
			      m_DDesc.EditRate, TCFrameRate);
  }

  return result;
}

//
ASDCP::Result_t
ASDCP::IAB::MXFWriter::h__Writer::WriteFrame(const FrameBuffer& FrameBuf,
					       ASDCP::AESEncContext* Ctx, ASDCP::HMACContext* HMAC)
{
  Result_t result = RESULT_OK;

  if ( m_State.Test_READY() )
    result = m_State.Goto_RUNNING(); // first time through

  ui64_t StreamOffset = m_StreamOffset;

  if ( ASDCP_SUCCESS(result) )
    result = WriteEKLVPacket(FrameBuf, m_EssenceUL, MXF_BER_LENGTH, Ctx, HMAC);

  if ( ASDCP_SUCCESS(result) )
  {
    IndexTableSegment::IndexEntry Entry;
    Entry.StreamOffset = StreamOffset;
    m_FooterPart.PushIndexEntry(Entry);
    m_FramesWritten++;
  }
  return result;
}

// Closes the MXF file, writing the index and other closing information.
//
ASDCP::Result_t
ASDCP::IAB::MXFWriter::h__Writer::Finalize()
{
  if ( ! m_State.Test_RUNNING() )
    return RESULT_STATE;

  m_State.Goto_FINAL();

  return WriteASDCPFooter();
}



//------------------------------------------------------------------------------------------

ASDCP::IAB::MXFWriter::MXFWriter()
{
}

ASDCP::IAB::MXFWriter::~MXFWriter()
{
}

// Warning: direct manipulation of MXF structures can interfere
// with the normal operation of the wrapper.  Caveat emptor!
//
ASDCP::MXF::OP1aHeader&
ASDCP::IAB::MXFWriter::OP1aHeader()
{
  if ( m_Writer.empty() )
  {
    assert(g_OP1aHeader);
    return *g_OP1aHeader;
    }

  return m_Writer->m_HeaderPart;
}

// Warning: direct manipulation of MXF structures can interfere
// with the normal operation of the wrapper.  Caveat emptor!
//
ASDCP::MXF::OPAtomIndexFooter&
ASDCP::IAB::MXFWriter::OPAtomIndexFooter()
{
  if ( m_Writer.empty() )
  {
    assert(g_OPAtomIndexFooter);
    return *g_OPAtomIndexFooter;
  }

  return m_Writer->m_FooterPart;
}

// Warning: direct manipulation of MXF structures can interfere
// with the normal operation of the wrapper.  Caveat emptor!
//
ASDCP::MXF::RIP&
ASDCP::IAB::MXFWriter::RIP()
{
  if ( m_Writer.empty() )
    {
      assert(g_RIP);
      return *g_RIP;
    }

  return m_Writer->m_RIP;
}

// Open the file for writing. The file must not exist. Returns error if
// the operation cannot be completed.
ASDCP::Result_t
ASDCP::IAB::MXFWriter::OpenWrite(const std::string& filename, const WriterInfo& Info,
				       const IABDescriptor& ADesc, ui32_t HeaderSize)
{
  if ( Info.LabelSetType != LS_MXF_SMPTE )
  {
    DefaultLogSink().Error("IAB support requires LS_MXF_SMPTE\n");
    return RESULT_FORMAT;
  }

  m_Writer = new h__Writer(IABSMPTEDict());
  m_Writer->m_Info = Info;

  Result_t result = m_Writer->OpenWrite(filename, HeaderSize, ADesc);

  if ( ASDCP_SUCCESS(result) )
      result = m_Writer->SetSourceStream(ADesc, IAB_ESSENCE_CODING, IAB_PACKAGE_LABEL,
                                         IAB_DEF_LABEL);
  
  if ( ASDCP_FAILURE(result) )
    m_Writer.release();

  return result;
}

// Writes a frame of essence to the MXF file. If the optional AESEncContext
// argument is present, the essence is encrypted prior to writing.
// Fails if the file is not open, is finalized, or an operating system
// error occurs.
ASDCP::Result_t
ASDCP::IAB::MXFWriter::WriteFrame(const DCData::FrameBuffer& FrameBuf, AESEncContext* Ctx, HMACContext* HMAC)
{
  if ( m_Writer.empty() )
    return RESULT_INIT;

  return m_Writer->WriteFrame(FrameBuf, Ctx, HMAC);
}

// Closes the MXF file, writing the index and other closing information.
ASDCP::Result_t
ASDCP::IAB::MXFWriter::Finalize()
{
  if ( m_Writer.empty() )
    return RESULT_INIT;

  return m_Writer->Finalize();
}


//
// end AS_DCP_IAB.cpp
//