/*
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/*! \file    AS_DCP_ATMOS.cpp
    \version $Id: AS_DCP_ATMOS.cpp,v 1.4 2014/01/02 23:29:22 jhurst Exp $
    \brief   AS-DCP library, Dolby Atmos essence reader and writer implementation
*/


#include <iostream>

#include <asdcp/AS_DCP.h>
#include "AS_DCP_DCData_internal.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;
}


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


class ASDCP::ATMOS::MXFReader::h__Reader : public ASDCP::DCData::h__Reader
{
  MXF::DolbyAtmosSubDescriptor* m_EssenceSubDescriptor;

  ASDCP_NO_COPY_CONSTRUCT(h__Reader);
  h__Reader();

 public:
  AtmosDescriptor m_ADesc;

  h__Reader(const Dictionary& d) : DCData::h__Reader(d),  m_EssenceSubDescriptor(NULL),
                                   m_ADesc() {}
  virtual ~h__Reader() {}
  Result_t    OpenRead(const std::string&);
  Result_t    MD_to_Atmos_ADesc(ATMOS::AtmosDescriptor& ADesc);
};

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 = DCData::h__Reader::OpenRead(filename);

  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::ATMOS::MXFReader::MXFReader()
{
  m_Reader = new h__Reader(DefaultSMPTEDict());
}


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 DCData::h__Writer
{
  MXF::DolbyAtmosSubDescriptor* m_EssenceSubDescriptor;

  ASDCP_NO_COPY_CONSTRUCT(h__Writer);
  h__Writer();

 public:
  AtmosDescriptor m_ADesc;

  h__Writer(const Dictionary& d) : DCData::h__Writer(d),
      m_EssenceSubDescriptor(NULL), m_ADesc() {}

  virtual ~h__Writer(){}

  Result_t OpenWrite(const std::string&, ui32_t HeaderSize, const AtmosDescriptor& ADesc);
  Result_t Atmos_ADesc_to_MD(const AtmosDescriptor& ADesc);
};

//
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)
{

  m_EssenceSubDescriptor = new DolbyAtmosSubDescriptor(m_Dict);
  DCData::SubDescriptorList_t subDescriptors;
  subDescriptors.push_back(m_EssenceSubDescriptor);
  Result_t result = DCData::h__Writer::OpenWrite(filename, HeaderSize, subDescriptors);
  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::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(DefaultSMPTEDict());
  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
//
