cabacwriter.cpp

JVT-Z203_jsvm.rar

  ETRACE_N;

  return Err::m_nOK;
}


ErrVal CabacWriter::blockModes( MbDataAccess& rcMbDataAccess )
{
  for( B8x8Idx c8x8Idx; c8x8Idx.isLegal(); c8x8Idx++ )
  {
    RNOK( xWriteBlockMode( rcMbDataAccess.getConvertBlkMode( c8x8Idx.b8x8Index() ) ) )
  }
  return Err::m_nOK;
}

ErrVal CabacWriter::xWriteBlockMode( UInt uiBlockMode )
{
  UInt uiSymbol;

  if( ! m_pcSliceHeader->isBSlice() )
  {
    uiSymbol = (0 == uiBlockMode) ? 1 : 0;
    RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cBlockTypeCCModel.get( 0, 1 ) ) );
    if( !uiSymbol )
    {
      uiSymbol = (1 == uiBlockMode) ? 0 : 1;
      RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cBlockTypeCCModel.get( 0, 3 ) ) );
      if( uiSymbol )
      {
        uiSymbol = (2 == uiBlockMode) ? 1:0;
        RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cBlockTypeCCModel.get( 0, 4 ) ) );
      }
    }
  }
  else
  {
    uiSymbol = ( uiBlockMode ? 1 : 0 );
    RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cBlockTypeCCModel.get( 1, 0 ) ) );
    if( uiSymbol )
    {
      uiSymbol = (3 > uiBlockMode) ? 0 : 1;
      RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cBlockTypeCCModel.get( 1, 1 ) ) );
      if( uiSymbol )
      {
        uiSymbol = (7 > uiBlockMode) ? 0 : 1;
        RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cBlockTypeCCModel.get( 1, 2 ) ) );
        if( uiSymbol )
        {
          uiBlockMode -= 7;
          uiSymbol = ( uiBlockMode >> 2 ) & 1;
          RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cBlockTypeCCModel.get( 1, 3 ) ) );
          if( ! uiSymbol )
          {
            uiSymbol = ( uiBlockMode >> 1 ) & 1;
            RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cBlockTypeCCModel.get( 1, 3 ) ) );
          }
          uiSymbol = uiBlockMode & 1;
          RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cBlockTypeCCModel.get( 1, 3 ) ) );
          uiBlockMode += 7; // just for correct trace file
        }
        else
        {
          uiSymbol = (5 > uiBlockMode) ? 0 : 1;
          RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cBlockTypeCCModel.get( 1, 3 ) ) );
          uiSymbol = ( 1 == (1 & uiBlockMode) ) ? 0 : 1;
          RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cBlockTypeCCModel.get( 1, 3 ) ) );
        }
      }
      else
      {
        uiSymbol = (1 == uiBlockMode) ? 0 : 1;
        RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cBlockTypeCCModel.get( 1, 3 ) ) );
      }
    }
  }

  ETRACE_T( "BlockMode" );
  ETRACE_TY( "ae(v)" );
  ETRACE_CODE(uiBlockMode);
  ETRACE_N;

  return Err::m_nOK;
}



ErrVal CabacWriter::fieldFlag( MbDataAccess& rcMbDataAccess )
{
  UInt uiSymbol = rcMbDataAccess.getMbData().getFieldFlag() ? 1 : 0;

  RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cFieldFlagCCModel.get( 0, rcMbDataAccess.getCtxFieldFlag() ) ) );

  ETRACE_T( "FieldFlag:" );
  ETRACE_TY( "ae(v)" );
  ETRACE_CODE( rcMbDataAccess.getMbData().getFieldFlag() );
  ETRACE_N;

  return Err::m_nOK;
}
ErrVal CabacWriter::skipFlag( MbDataAccess& rcMbDataAccess, Bool bNotAllowed )
{
  ROTRS( m_pcSliceHeader->isIntraSlice(), Err::m_nOK );

  UInt uiSymbol = bNotAllowed ? 0 : rcMbDataAccess.isSkippedMb() ? 1 : 0;

  if( m_pcSliceHeader->isBSlice() )
  {
    RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 2, 7 + rcMbDataAccess.getCtxMbSkipped() ) ) );
  }
  else
  {
    RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 1, rcMbDataAccess.getCtxMbSkipped() ) ) );
  }
  rcMbDataAccess.getMbData().setSkipFlag(uiSymbol!=0);
  ROTRS( 0 == uiSymbol, Err::m_nOK );

  m_uiLastDQpNonZero = 0; // no DeltaQP for Skipped Macroblock
  ETRACE_T( "MbMode" );
  ETRACE_TY( "ae(v)" );
  ETRACE_CODE( 0 );
  ETRACE_N;

  return Err::m_nOK;
}


ErrVal CabacWriter::BLSkipFlag( MbDataAccess& rcMbDataAccess )
{
  UInt uiSymbol = rcMbDataAccess.getMbData().getBLSkipFlag() ? 1 : 0;
  UInt uiCtx    = rcMbDataAccess.getCtxBLSkipFlag();

  RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cBLSkipCCModel.get( 0, uiCtx ) ) );

  ETRACE_T( "BLSkipFlag" );
  ETRACE_TY( "ae(v)" );
  ETRACE_CODE( uiSymbol );
  ETRACE_N;

  return Err::m_nOK;
}


ErrVal CabacWriter::resPredFlag( MbDataAccess& rcMbDataAccess )
{
  UInt  uiSymbol = ( rcMbDataAccess.getMbData().getResidualPredFlag() ? 1 : 0 );
  UInt  uiCtx    = ( rcMbDataAccess.getMbData().getBLSkipFlag() ? 0 : 1 );

  RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cResPredFlagCCModel.get( 0, uiCtx ) ) );

  ETRACE_T( "ResidualPredFlag " );
  ETRACE_TY( "ae(v)" );
  ETRACE_CODE( uiSymbol );
  ETRACE_N;

  return Err::m_nOK;
}


ErrVal CabacWriter::mbMode( MbDataAccess& rcMbDataAccess )
{
  UInt uiMbMode     = rcMbDataAccess.getConvertMbType();
  ETRACE_DECLARE( UInt uiOrigMbMode = uiMbMode );

  if( m_pcSliceHeader->isIntraSlice() )
  {
    UInt uiSymbol;
    uiSymbol = ( 0 == uiMbMode) ? 0 : 1;
    RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 0, rcMbDataAccess.getCtxMbIntra4x4() ) ) );

    if( uiSymbol )
    {
      uiSymbol = ( 25 == uiMbMode) ? 1 : 0;
      RNOK( CabaEncoder::writeTerminatingBit( uiSymbol ) );

      if( ! uiSymbol )
      {
        uiSymbol = ( 13 > uiMbMode) ? 0 : 1;
        RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 0, 4 ) ) );
        uiMbMode -= 12* uiSymbol + 1;

        uiSymbol = ( 4 > uiMbMode) ? 0 : 1;
        RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 0, 5 ) ) );

        if( uiSymbol )
        {
          uiSymbol = ( 8 > uiMbMode) ? 0 : 1;
          RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 0, 6 ) ) );
        }

        uiSymbol = (uiMbMode>>1) & 1;
        RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 0, 7 ) ) );

        uiSymbol = uiMbMode & 1;
        RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 0, 8 ) ) );
      }
    }
  }
  else
  {
    UInt uiSymbol, uiIntra16x16Symbol = 0;

    if( ! m_pcSliceHeader->isBSlice() )
    {
      uiSymbol = ( 6 > uiMbMode) ? 0 : 1;
      RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 1, 4 ) ) );
      if( uiSymbol )
      {
        uiSymbol = ( 6 == uiMbMode) ? 0 : 1;
        RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 1, 7 ) ) );

        if( uiSymbol )
        {
          uiIntra16x16Symbol = uiMbMode - 6;
        }
      }
      else
      {
        uiSymbol = (uiMbMode>>1) & 1;
        RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 1, 5 ) ) );
        if( uiSymbol )
        {
          uiSymbol = 1-(uiMbMode&1);
          RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 1, 7 ) ) );
        }
        else
        {
          uiSymbol = 1-(uiMbMode&1);
          RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 1, 6 ) ) );
        }
      }
    }
    else
    {
      ROFRS( uiMbMode, Err::m_nERR );

      uiMbMode--;
      uiSymbol = ( uiMbMode ? 1 : 0 );
      RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 2, rcMbDataAccess.getCtxMbType() ) ) );
      if( uiSymbol )
      {
        uiSymbol = ( 3 > uiMbMode) ? 0 : 1;
        RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 2, 4 ) ) );
        if( uiSymbol )
        {
          uiSymbol = ( 11 > uiMbMode) ? 0 : 1;
          RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 2, 5 ) ) );
          if( uiSymbol )
          {
            if( ( uiSymbol = ( 22 == uiMbMode ) ) || 11 == uiMbMode )
            {
              RNOK( CabaEncoder::writeSymbol(        1, m_cMbTypeCCModel.get( 2, 6 ) ) );
              RNOK( CabaEncoder::writeSymbol(        1, m_cMbTypeCCModel.get( 2, 6 ) ) );
              RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 2, 6 ) ) );
            }
            else
            {
              if( uiMbMode < 23 )
              {
                uiMbMode -= 12;
              }
              else if( uiMbMode < 24 )
              {
                uiMbMode -= 13;
              }
              else
              {
                uiIntra16x16Symbol = uiMbMode - 23;
                uiMbMode = 11;
              }

              uiSymbol   = (uiMbMode>>3) & 1;
              RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 2, 6 ) ) );
              uiSymbol   = (uiMbMode>>2) & 1;
              RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 2, 6 ) ) );
              uiSymbol   = (uiMbMode>>1) & 1;
              RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 2, 6 ) ) );
              uiSymbol   = uiMbMode & 1;
              RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 2, 6 ) ) );
            }
          }
          else
          {
            uiMbMode -= 3;
            uiSymbol = (uiMbMode>>2) & 1;
            RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 2, 6 ) ) );
            uiSymbol = (uiMbMode>>1) & 1;
            RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 2, 6 ) ) );
            uiSymbol = uiMbMode & 1;
            RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 2, 6 ) ) );
          }
        }
        else
        {
          uiSymbol = uiMbMode >> 1;
          RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 2, 6 ) ) );
        }
      }
    }

    if( uiIntra16x16Symbol )
    {
      uiSymbol = ( 25 == uiIntra16x16Symbol) ? 1 : 0;
      RNOK( CabaEncoder::writeTerminatingBit( uiSymbol ) );

      if( ! uiSymbol )
      {
        uiSymbol = ( uiIntra16x16Symbol < 13 ? 0 : 1 );
        RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 1, 8 ) ) );
        uiIntra16x16Symbol -= ( 12 * uiSymbol + 1 );

        uiSymbol = ( 4 > uiIntra16x16Symbol) ? 0 : 1;
        RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 1, 9 ) ) );

        if( uiSymbol )
        {
          uiSymbol = ( 8 > uiIntra16x16Symbol) ? 0 : 1;
          RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 1, 9 ) ) );
        }

        uiSymbol = (uiIntra16x16Symbol>>1) & 1;
        RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 1, 10 ) ) );

        uiSymbol = uiIntra16x16Symbol & 1;
        RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMbTypeCCModel.get( 1, 10 ) ) );
      }
    }
  }

  ETRACE_T( "MbMode" );
  ETRACE_TY( "ae(v)" );
  ETRACE_CODE( uiOrigMbMode );
  ETRACE_N;

  return Err::m_nOK;
}





ErrVal CabacWriter::xWriteMvdComponent( Short sMvdComp, UInt uiAbsSum, UInt uiCtx )
{
  //--- set context ---
  UInt uiLocalCtx = uiCtx;
  if( uiAbsSum >= 3)
  {
    uiLocalCtx += ( uiAbsSum > 32) ? 3 : 2;
  }

  //--- first symbol: if non-zero ---
  UInt uiSymbol = ( 0 == sMvdComp) ? 0 : 1;
  RNOK( CabaEncoder::writeSymbol( uiSymbol, m_cMvdCCModel.get( 0, uiLocalCtx ) ) );
  ROTRS( 0 == uiSymbol, Err::m_nOK );

  //--- absolute value and sign
  UInt uiSign = 0;
  if( 0 > sMvdComp )
  {
    uiSign   = 1;
    sMvdComp = -sMvdComp;