/*
Copyright (c) 2004-2021, John Hurst
All rights reserved.

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modification, are permitted provided that the following conditions
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   notice, this list of conditions and the following disclaimer.
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   derived from this software without specific prior written permission.

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


#include <iostream>

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

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

//
std::ostream&
ASDCP::ATMOS::operator << (std::ostream& strm, const AtmosDescriptor& 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 << "      AtmosVersion: " << (unsigned) ADesc.AtmosVersion << std::endl;
  strm << "   MaxChannelCount: " << (unsigned) ADesc.MaxChannelCount << std::endl;
  strm << "    MaxObjectCount: " << (unsigned) ADesc.MaxObjectCount << std::endl;
  strm << "           AtmosID: " << UUID(ADesc.AtmosID).EncodeString(str_buf, 40) << std::endl;
  strm << "        FirstFrame: " << (unsigned) ADesc.FirstFrame << std::endl;
  return strm;
}

//
void
ASDCP::ATMOS::AtmosDescriptorDump(const AtmosDescriptor& ADesc, FILE* stream)
{
  char str_buf[40];
  char atmosID_buf[40];
  if ( stream == 0 )
    stream = stderr;

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

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


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

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

class ASDCP::ATMOS::MXFReader::h__Reader : public ASDCP::h__ASDCPReader
{
  MXF::PrivateDCDataDescriptor* m_EssenceDescriptor;
  MXF::DolbyAtmosSubDescriptor* m_EssenceSubDescriptor;

  KM_NO_COPY_CONSTRUCT(h__Reader);
  h__Reader();

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

  h__Reader(const Dictionary* d, const Kumu::IFileReaderFactory& fileReaderFactory) :
    ASDCP::h__ASDCPReader(d, fileReaderFactory),  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_Atmos_ADesc(ATMOS::AtmosDescriptor& ADesc);
};

ASDCP::Result_t
ASDCP::ATMOS::MXFReader::h__Reader::MD_to_DCData_DDesc(ASDCP::DCData::DCDataDescriptor& DDesc)
{
  ASDCP_TEST_NULL(m_EssenceDescriptor);
  MXF::PrivateDCDataDescriptor* DDescObj = m_EssenceDescriptor;
  DDesc.EditRate = DDescObj->SampleRate;
  if ( ! DDescObj->ContainerDuration.empty() )
    {
      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::ATMOS::MXFReader::h__Reader::MD_to_Atmos_ADesc(ATMOS::AtmosDescriptor& ADesc)
{
  ASDCP_TEST_NULL(m_EssenceSubDescriptor);
  Result_t result = MD_to_DCData_DDesc(ADesc);
  if( ASDCP_SUCCESS(result) )
  {
    MXF::DolbyAtmosSubDescriptor* ADescObj = m_EssenceSubDescriptor;
    ADesc.MaxChannelCount = ADescObj->MaxChannelCount;
    ADesc.MaxObjectCount = ADescObj->MaxObjectCount;
    ::memcpy(ADesc.AtmosID, ADescObj->AtmosID.Value(), UUIDlen);
    ADesc.AtmosVersion = ADescObj->AtmosVersion;
    ADesc.FirstFrame = ADescObj->FirstFrame;
  }
  return result;
}

//
//
ASDCP::Result_t
ASDCP::ATMOS::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(PrivateDCDataDescriptor), &iObj);

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

  if ( m_EssenceDescriptor == 0 )
    {
      DefaultLogSink().Error("DCDataDescriptor object not found in Atmos 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(DolbyAtmosSubDescriptor), &iObj);
	  m_EssenceSubDescriptor = static_cast<MXF::DolbyAtmosSubDescriptor*>(iObj);
	  
	  if ( iObj == 0 )
	    {
	      DefaultLogSink().Error("DolbyAtmosSubDescriptor object not found.\n");
	      return RESULT_FORMAT;
	    }
	}

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

  return result;
}

//
ASDCP::Result_t
ASDCP::ATMOS::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_PrivateDCDataEssence), Ctx, HMAC);
}


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

ASDCP::ATMOS::MXFReader::MXFReader(const Kumu::IFileReaderFactory& fileReaderFactory)
{
  m_Reader = new h__Reader(&AtmosSMPTEDict(), fileReaderFactory);
}


ASDCP::ATMOS::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::ATMOS::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::ATMOS::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::ATMOS::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::ATMOS::MXFReader::OpenRead(const std::string& filename) const
{
  return m_Reader->OpenRead(filename);
}

//
ASDCP::Result_t
ASDCP::ATMOS::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::ATMOS::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::ATMOS::MXFReader::FillAtmosDescriptor(AtmosDescriptor& 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::ATMOS::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::ATMOS::MXFReader::DumpHeaderMetadata(FILE* stream) const
{
  if ( m_Reader->m_File->IsOpen() )
    m_Reader->m_HeaderPart.Dump(stream);
}

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

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

  return RESULT_INIT;
}


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

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

  ASDCP_NO_COPY_CONSTRUCT(h__Writer);
  h__Writer();

 public:
  AtmosDescriptor 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 AtmosDescriptor& 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 Atmos_ADesc_to_MD(const AtmosDescriptor& ADesc);
};

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

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

//
ASDCP::Result_t
ASDCP::ATMOS::MXFWriter::h__Writer::Atmos_ADesc_to_MD(const AtmosDescriptor& ADesc)
{
  ASDCP_TEST_NULL(m_EssenceDescriptor);
  ASDCP_TEST_NULL(m_EssenceSubDescriptor);
  MXF::DolbyAtmosSubDescriptor * ADescObj = m_EssenceSubDescriptor;
  ADescObj->MaxChannelCount = ADesc.MaxChannelCount;
  ADescObj->MaxObjectCount = ADesc.MaxObjectCount;
  ADescObj->AtmosID.Set(ADesc.AtmosID);
  ADescObj->AtmosVersion = ADesc.AtmosVersion;
  ADescObj->FirstFrame = ADesc.FirstFrame;
  return RESULT_OK;
}

//
ASDCP::Result_t
ASDCP::ATMOS::MXFWriter::h__Writer::OpenWrite(const std::string& filename, ui32_t HeaderSize, const AtmosDescriptor& 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::PrivateDCDataDescriptor(m_Dict);
      m_EssenceSubDescriptor = new DolbyAtmosSubDescriptor(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, ATMOS_ESSENCE_CODING, SMPTE_UL_LENGTH);
      result = Atmos_ADesc_to_MD(m_ADesc);
  }

  return result;
}

//
ASDCP::Result_t
ASDCP::ATMOS::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_PrivateDCDataEssence), 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_PrivateDCDataWrappingFrame)),
			      defLabel, UL(m_EssenceUL), UL(m_Dict->ul(MDD_DataDataDef)),
			      m_DDesc.EditRate, TCFrameRate);
  }

  return result;
}

//
ASDCP::Result_t
ASDCP::ATMOS::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::ATMOS::MXFWriter::h__Writer::Finalize()
{
  if ( ! m_State.Test_RUNNING() )
    return RESULT_STATE;

  m_State.Goto_FINAL();

  return WriteASDCPFooter();
}



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

ASDCP::ATMOS::MXFWriter::MXFWriter()
{
}

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

// Warning: direct manipulation of MXF structures can interfere
// with the normal operation of the wrapper.  Caveat emptor!
//
ASDCP::MXF::OP1aHeader&
ASDCP::ATMOS::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::ATMOS::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::ATMOS::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::ATMOS::MXFWriter::OpenWrite(const std::string& filename, const WriterInfo& Info,
				       const AtmosDescriptor& ADesc, ui32_t HeaderSize)
{
  if ( Info.LabelSetType != LS_MXF_SMPTE )
  {
    DefaultLogSink().Error("Atmos support requires LS_MXF_SMPTE\n");
    return RESULT_FORMAT;
  }

  m_Writer = new h__Writer(&AtmosSMPTEDict());
  m_Writer->m_Info = Info;

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

  if ( ASDCP_SUCCESS(result) )
      result = m_Writer->SetSourceStream(ADesc, ATMOS_ESSENCE_CODING, ATMOS_PACKAGE_LABEL,
                                         ATMOS_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::ATMOS::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::ATMOS::MXFWriter::Finalize()
{
  if ( m_Writer.empty() )
    return RESULT_INIT;

  return m_Writer->Finalize();
}


//
// end AS_DCP_ATMOS.cpp
//