path: root/src/h__02_Writer.cpp

/*
Copyright (c) 2011-2021, Robert Scheler, Heiko Sparenberg Fraunhofer IIS,
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    h__02_Writer.cpp
  \version $Id$
  \brief   MXF file writer base class
*/

#include "AS_02_internal.h"

using namespace ASDCP;
using namespace ASDCP::MXF;

static const ui32_t CBRIndexEntriesPerSegment = 5000;


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

AS_02::MXF::AS02IndexWriterVBR::AS02IndexWriterVBR(const ASDCP::Dictionary* d) :
  Partition(d), m_CurrentSegment(0), m_Dict(d), m_Lookup(0)
{
  BodySID = 0;
  IndexSID = 129;
  MinorVersion = 3;
}

AS_02::MXF::AS02IndexWriterVBR::~AS02IndexWriterVBR() {}

//
Result_t
AS_02::MXF::AS02IndexWriterVBR::WriteToFile(Kumu::FileWriter& Writer)
{
  assert(m_Dict);
  ASDCP::FrameBuffer index_body_buffer;
  ui32_t index_body_size = (ui32_t)m_PacketList->m_List.size() * MaxIndexSegmentSize; // segment-count * max-segment-size
  Result_t result = index_body_buffer.Capacity(index_body_size); 
  ui64_t start_position = 0;

  if ( m_CurrentSegment != 0 )
    {
      m_CurrentSegment->IndexDuration = m_CurrentSegment->IndexEntryArray.size();
      start_position = m_CurrentSegment->IndexStartPosition + m_CurrentSegment->IndexDuration;
      m_CurrentSegment = 0;
    }

  std::list<InterchangeObject*>::iterator pl_i = m_PacketList->m_List.begin();
  for ( ; pl_i != m_PacketList->m_List.end() && KM_SUCCESS(result); pl_i++ )
    {
      InterchangeObject* object = *pl_i;
      object->m_Lookup = m_Lookup;

      ASDCP::FrameBuffer WriteWrapper;
      WriteWrapper.SetData(index_body_buffer.Data() + index_body_buffer.Size(),
			   index_body_buffer.Capacity() - index_body_buffer.Size());
      result = object->WriteToBuffer(WriteWrapper);
      index_body_buffer.Size(index_body_buffer.Size() + WriteWrapper.Size());
      delete *pl_i;
      *pl_i = 0;
    }

  m_PacketList->m_List.clear();

  if ( KM_SUCCESS(result) )
    {
      IndexByteCount = index_body_buffer.Size();
      UL body_ul(m_Dict->ul(MDD_ClosedCompleteBodyPartition));
      result = Partition::WriteToFile(Writer, body_ul);
    }

  if ( KM_SUCCESS(result) )
    {
      ui32_t write_count = 0;
      result = Writer.Write(index_body_buffer.RoData(), index_body_buffer.Size(), &write_count);
      assert(write_count == index_body_buffer.Size());
    }

  if ( KM_SUCCESS(result) )
    {
      m_CurrentSegment = new IndexTableSegment(m_Dict);
      assert(m_CurrentSegment);
      AddChildObject(m_CurrentSegment);
      m_CurrentSegment->DeltaEntryArray.push_back(IndexTableSegment::DeltaEntry());
      m_CurrentSegment->IndexEditRate = m_EditRate;
      m_CurrentSegment->IndexStartPosition = start_position;
    }

  return result;
}

//
void
AS_02::MXF::AS02IndexWriterVBR::Dump(FILE* stream)
{
  if ( stream == 0 )
    stream = stderr;

  Partition::Dump(stream);

  std::list<InterchangeObject*>::iterator i = m_PacketList->m_List.begin();
  for ( ; i != m_PacketList->m_List.end(); ++i )
    {
      (*i)->Dump(stream);
    }
}

//
ui32_t
AS_02::MXF::AS02IndexWriterVBR::GetDuration() const
{
  ui32_t duration = 0;
  std::list<InterchangeObject*>::const_iterator i;

  for ( i = m_PacketList->m_List.begin(); i != m_PacketList->m_List.end(); ++i )
    {
      IndexTableSegment* segment = dynamic_cast<IndexTableSegment*>(*i);
      if ( segment != 0 )
	{
	  duration += (ui32_t)segment->IndexEntryArray.size();
	}
    }

  return duration;
}

//
void
AS_02::MXF::AS02IndexWriterVBR::PushIndexEntry(const IndexTableSegment::IndexEntry& Entry)
{
  // do we have an available segment?
  if ( m_CurrentSegment == 0 )
    { // no, set up a new segment
      m_CurrentSegment = new IndexTableSegment(m_Dict);
      assert(m_CurrentSegment);
      AddChildObject(m_CurrentSegment);
      m_CurrentSegment->DeltaEntryArray.push_back(IndexTableSegment::DeltaEntry());
      m_CurrentSegment->IndexEditRate = m_EditRate;
      m_CurrentSegment->IndexStartPosition = 0;
    } else if (m_CurrentSegment->IndexEntryArray.size() >= CBRIndexEntriesPerSegment) { // no, this one is full, start another
      m_CurrentSegment->IndexDuration = m_CurrentSegment->IndexEntryArray.size();
      ui64_t StartPosition = m_CurrentSegment->IndexStartPosition + m_CurrentSegment->IndexDuration;

      m_CurrentSegment = new IndexTableSegment(m_Dict);
      assert(m_CurrentSegment);
      AddChildObject(m_CurrentSegment);
      m_CurrentSegment->DeltaEntryArray.push_back(IndexTableSegment::DeltaEntry());
      m_CurrentSegment->IndexEditRate = m_EditRate;
      m_CurrentSegment->IndexStartPosition = StartPosition;
  }

  m_CurrentSegment->IndexEntryArray.push_back(Entry);
}

void
AS_02::MXF::AS02IndexWriterVBR::SetEditRate(const ASDCP::Rational& edit_rate)
{
  m_EditRate = edit_rate;
}

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

//
AS_02::h__AS02WriterFrame::h__AS02WriterFrame(const ASDCP::Dictionary *d) :
  h__AS02Writer<AS_02::MXF::AS02IndexWriterVBR>(d), m_IndexStrategy(AS_02::IS_FOLLOW) {}

AS_02::h__AS02WriterFrame::~h__AS02WriterFrame() {}

//
Result_t
AS_02::h__AS02WriterFrame::WriteEKLVPacket(const ASDCP::FrameBuffer& FrameBuf,const byte_t* EssenceUL,
					   const ui32_t& MinEssenceElementBerLength,
					   AESEncContext* Ctx, HMACContext* HMAC)
{
  ui64_t this_stream_offset = m_StreamOffset; // m_StreamOffset will be changed by the call to Write_EKLV_Packet

  Result_t result = Write_EKLV_Packet(m_File, *m_Dict, m_HeaderPart, m_Info, m_CtFrameBuf, m_FramesWritten,
				      m_StreamOffset, FrameBuf, EssenceUL, MinEssenceElementBerLength, Ctx, HMAC);

  if ( KM_SUCCESS(result) )
    {  
      IndexTableSegment::IndexEntry Entry;
      Entry.StreamOffset = this_stream_offset;
      m_IndexWriter.PushIndexEntry(Entry);
    }

  if ( m_FramesWritten > 1 && ( ( m_FramesWritten + 1 ) % m_PartitionSpace ) == 0 )
    {
      assert(m_IndexWriter.GetDuration() > 0);
      FlushIndexPartition();

      UL body_ul(m_Dict->ul(MDD_ClosedCompleteBodyPartition));
      Partition body_part(m_Dict);
      body_part.MajorVersion = m_HeaderPart.MajorVersion;
      body_part.MinorVersion = m_HeaderPart.MinorVersion;
      body_part.BodySID = 1;
      body_part.OperationalPattern = m_HeaderPart.OperationalPattern;
      body_part.EssenceContainers = m_HeaderPart.EssenceContainers;
      body_part.ThisPartition = m_File.TellPosition();

      body_part.BodyOffset = m_StreamOffset;
      result = body_part.WriteToFile(m_File, body_ul);
      m_RIP.PairArray.push_back(RIP::PartitionPair(1, body_part.ThisPartition));
    }

  return result;
}


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


AS_02::MXF::AS02IndexWriterCBR::AS02IndexWriterCBR(const ASDCP::Dictionary *d) :
  Partition(d), m_CurrentSegment(0), m_Dict(d), m_Lookup(0), m_Duration(0), m_SampleSize(0)
{
  BodySID = 0;
  IndexSID = 129;
  MinorVersion = 3;
}

AS_02::MXF::AS02IndexWriterCBR::~AS02IndexWriterCBR() {}

//
Result_t
AS_02::MXF::AS02IndexWriterCBR::WriteToFile(Kumu::FileWriter& Writer)
{
  assert(m_Dict);
  ASDCP::FrameBuffer index_body_buffer;
  ui32_t   index_body_size = MaxIndexSegmentSize; // segment-count * max-segment-size
  Result_t result = index_body_buffer.Capacity(index_body_size); 

  m_CurrentSegment = new IndexTableSegment(m_Dict);
  assert(m_CurrentSegment);
  m_CurrentSegment->m_Lookup = m_Lookup;
  m_CurrentSegment->IndexEditRate = m_EditRate;
  m_CurrentSegment->IndexStartPosition = 0;
  m_CurrentSegment->IndexDuration = m_Duration;
  m_CurrentSegment->EditUnitByteCount = m_SampleSize;
  AddChildObject(m_CurrentSegment);

  ASDCP::FrameBuffer WriteWrapper;
  WriteWrapper.SetData(index_body_buffer.Data() + index_body_buffer.Size(),
		       index_body_buffer.Capacity() - index_body_buffer.Size());

  result = m_CurrentSegment->WriteToBuffer(WriteWrapper);
  index_body_buffer.Size(index_body_buffer.Size() + WriteWrapper.Size());
  delete m_CurrentSegment;
  m_CurrentSegment = 0;
  m_PacketList->m_List.clear();

  if ( KM_SUCCESS(result) )
    {
      IndexByteCount = index_body_buffer.Size();
      UL body_ul(m_Dict->ul(MDD_ClosedCompleteBodyPartition));
      result = Partition::WriteToFile(Writer, body_ul);
    }

  if ( KM_SUCCESS(result) )
    {
      ui32_t write_count = 0;
      result = Writer.Write(index_body_buffer.RoData(), index_body_buffer.Size(), &write_count);
      assert(write_count == index_body_buffer.Size());
    }

  return result;
}

//
ui32_t
AS_02::MXF::AS02IndexWriterCBR::GetDuration() const
{
  return m_Duration;
}

//
void
AS_02::MXF::AS02IndexWriterCBR::SetEditRate(const ASDCP::Rational& edit_rate, const ui32_t& sample_size)
{
  m_EditRate = edit_rate;
  m_SampleSize = sample_size;
}


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