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/** \file     SEI.cpp
    \brief    helper functions for SEI handling
*/

#include "CommonDef.h"
#include "SEI.h"

#include "dtrace_next.h"

#if ENABLE_TRACING
void xTraceSEIHeader()
{
  DTRACE( g_trace_ctx, D_HEADER, "=========== SEI message ===========\n" );
}

void xTraceSEIMessageType( SEI::PayloadType payloadType )
{
  DTRACE( g_trace_ctx, D_HEADER, "=========== %s SEI message ===========\n", SEI::getSEIMessageString( payloadType ) );
}
#endif

SEIMessages getSeisByType(SEIMessages &seiList, SEI::PayloadType seiType)
{
  SEIMessages result;

  for (SEIMessages::iterator it=seiList.begin(); it!=seiList.end(); it++)
  {
    if ((*it)->payloadType() == seiType)
    {
      result.push_back(*it);
    }
  }
  return result;
}

SEIMessages extractSeisByType(SEIMessages &seiList, SEI::PayloadType seiType)
{
  SEIMessages result;

  SEIMessages::iterator it=seiList.begin();
  while ( it!=seiList.end() )
  {
    if ((*it)->payloadType() == seiType)
    {
      result.push_back(*it);
      it = seiList.erase(it);
    }
    else
    {
      it++;
    }
  }
  return result;
}


void deleteSEIs (SEIMessages &seiList)
{
  for (SEIMessages::iterator it=seiList.begin(); it!=seiList.end(); it++)
  {
    delete (*it);
  }
  seiList.clear();
}

void SEIBufferingPeriod::copyTo (SEIBufferingPeriod& target) const
{
  target.m_bpNalCpbParamsPresentFlag = m_bpNalCpbParamsPresentFlag;
  target.m_bpVclCpbParamsPresentFlag = m_bpVclCpbParamsPresentFlag;
  target.m_initialCpbRemovalDelayLength = m_initialCpbRemovalDelayLength;
  target.m_cpbRemovalDelayLength = m_cpbRemovalDelayLength;
  target.m_dpbOutputDelayLength = m_dpbOutputDelayLength;
  target.m_duCpbRemovalDelayIncrementLength = m_duCpbRemovalDelayIncrementLength;
  target.m_dpbOutputDelayDuLength = m_dpbOutputDelayDuLength;
  target.m_concatenationFlag = m_concatenationFlag;
  target.m_auCpbRemovalDelayDelta = m_auCpbRemovalDelayDelta;
  target.m_cpbRemovalDelayDeltasPresentFlag =  m_cpbRemovalDelayDeltasPresentFlag;
  target.m_numCpbRemovalDelayDeltas = m_numCpbRemovalDelayDeltas;
  target.m_bpMaxSubLayers = m_bpMaxSubLayers;
  ::memcpy(target.m_initialCpbRemovalDelay, m_initialCpbRemovalDelay, sizeof(m_initialCpbRemovalDelay));
  ::memcpy(target.m_initialCpbRemovalOffset, m_initialCpbRemovalOffset, sizeof(m_initialCpbRemovalOffset));
  ::memcpy(target.m_cpbRemovalDelayDelta, m_cpbRemovalDelayDelta, sizeof(m_cpbRemovalDelayDelta));
  target.m_bpCpbCnt = m_bpCpbCnt;
  target.m_bpDecodingUnitHrdParamsPresentFlag = m_bpDecodingUnitHrdParamsPresentFlag;
  target.m_decodingUnitCpbParamsInPicTimingSeiFlag = m_decodingUnitCpbParamsInPicTimingSeiFlag;
  target.m_sublayerInitialCpbRemovalDelayPresentFlag = m_sublayerInitialCpbRemovalDelayPresentFlag;
  target.m_concatenationFlag = m_concatenationFlag;
  target.m_maxInitialRemovalDelayForConcatenation = m_maxInitialRemovalDelayForConcatenation;
  target.m_altCpbParamsPresentFlag = m_altCpbParamsPresentFlag;
}

void SEIPictureTiming::copyTo (SEIPictureTiming& target) const
{
  ::memcpy(target.m_auCpbRemovalDelay, m_auCpbRemovalDelay, sizeof(m_auCpbRemovalDelay));
  ::memcpy(target.m_ptSubLayerDelaysPresentFlag, m_ptSubLayerDelaysPresentFlag, sizeof(m_ptSubLayerDelaysPresentFlag));
  ::memcpy(target.m_duCommonCpbRemovalDelayMinus1, m_duCommonCpbRemovalDelayMinus1, sizeof(m_duCommonCpbRemovalDelayMinus1));
  ::memcpy(target.m_cpbRemovalDelayDeltaEnabledFlag, m_cpbRemovalDelayDeltaEnabledFlag, sizeof(m_cpbRemovalDelayDeltaEnabledFlag));
  ::memcpy(target.m_cpbRemovalDelayDeltaIdx, m_cpbRemovalDelayDeltaIdx, sizeof(m_cpbRemovalDelayDeltaIdx));
  target.m_picDpbOutputDelay = m_picDpbOutputDelay;
  target.m_picDpbOutputDuDelay = m_picDpbOutputDuDelay;
  target.m_numDecodingUnitsMinus1 = m_numDecodingUnitsMinus1;
  target.m_duCommonCpbRemovalDelayFlag = m_duCommonCpbRemovalDelayFlag;

  target.m_numNalusInDuMinus1 = m_numNalusInDuMinus1;
  target.m_duCpbRemovalDelayMinus1 = m_duCpbRemovalDelayMinus1;
  target.m_cpbAltTimingInfoPresentFlag = m_cpbAltTimingInfoPresentFlag;
  target.m_cpbAltInitialCpbRemovalDelayDelta = m_cpbAltInitialCpbRemovalDelayDelta;
  target.m_cpbAltInitialCpbRemovalOffsetDelta = m_cpbAltInitialCpbRemovalOffsetDelta;
  target.m_cpbDelayOffset = m_cpbDelayOffset;
  target.m_dpbDelayOffset = m_dpbDelayOffset;
}

// Static member
const char *SEI::getSEIMessageString(SEI::PayloadType payloadType)
{
  switch (payloadType)
  {
    case SEI::BUFFERING_PERIOD:                     return "Buffering period";
    case SEI::PICTURE_TIMING:                       return "Picture timing";
#if HEVC_SEI
    case SEI::PAN_SCAN_RECT:                        return "Pan-scan rectangle";                   // not currently decoded
#endif
    case SEI::FILLER_PAYLOAD:                       return "Filler payload";                       // not currently decoded
    case SEI::USER_DATA_REGISTERED_ITU_T_T35:       return "User data registered";                 // not currently decoded
    case SEI::USER_DATA_UNREGISTERED:               return "User data unregistered";
    case SEI::FILM_GRAIN_CHARACTERISTICS:           return "Film grain characteristics";           // not currently decoded
    case SEI::FRAME_PACKING:                        return "Frame packing arrangement";
    case SEI::DECODING_UNIT_INFO:                   return "Decoding unit information";
#if HEVC_SEI
    case SEI::TEMPORAL_LEVEL0_INDEX:                return "Temporal sub-layer zero index";
#endif
    case SEI::DECODED_PICTURE_HASH:                 return "Decoded picture hash";
    case SEI::DEPENDENT_RAP_INDICATION:             return "Dependent RAP indication";
    case SEI::MASTERING_DISPLAY_COLOUR_VOLUME:      return "Mastering display colour volume";
#if U0033_ALTERNATIVE_TRANSFER_CHARACTERISTICS_SEI
    case SEI::ALTERNATIVE_TRANSFER_CHARACTERISTICS: return "Alternative transfer characteristics";
#endif
    case SEI::CONTENT_LIGHT_LEVEL_INFO:             return "Content light level information";
    case SEI::AMBIENT_VIEWING_ENVIRONMENT:          return "Ambient viewing environment";
    case SEI::CONTENT_COLOUR_VOLUME:                return "Content colour volume";
    case SEI::EQUIRECTANGULAR_PROJECTION:           return "Equirectangular projection";
    case SEI::SPHERE_ROTATION:                      return "Sphere rotation";
    case SEI::REGION_WISE_PACKING:                  return "Region wise packing information";
    case SEI::OMNI_VIEWPORT:                        return "Omni viewport";
    case SEI::GENERALIZED_CUBEMAP_PROJECTION:       return "Generalized cubemap projection";
    case SEI::SAMPLE_ASPECT_RATIO_INFO:             return "Sample aspect ratio information";
    case SEI::SUBPICTURE_LEVEL_INFO:                return "Subpicture level information";
    default:                                        return "Unknown";
  }
}
