{
    RNOK( m_pcMbSymbolWriteIf->finishSlice() );
  }

  return Err::m_nOK;
}


ErrVal MbCoder::encodeMotion( MbDataAccess& rcMbDataAccess,
                              MbDataAccess* pcMbDataAccessBase )
{
  ROT( rcMbDataAccess.getMbData().isIntra() );
  //===== base mode flag =====
  RNOK( m_pcMbSymbolWriteIf->BLSkipFlag( rcMbDataAccess ) );
  ROTRS( rcMbDataAccess.getMbData().getBLSkipFlag(), Err::m_nOK );

  //===== macroblock mode =====
  RNOK( m_pcMbSymbolWriteIf->mbMode( rcMbDataAccess ) );
  //===== BLOCK MODES =====
  if( rcMbDataAccess.getMbData().isInter8x8() )
  {
    RNOK( m_pcMbSymbolWriteIf->blockModes( rcMbDataAccess ) );
  }
  //===== MOTION INFORMATION =====
  MbMode eMbMode = rcMbDataAccess.getMbData().getMbMode();
  if( rcMbDataAccess.getSH().isInterB() )
  {
    RNOK( xWriteMotionPredFlags_FGS ( rcMbDataAccess, pcMbDataAccessBase, eMbMode, LIST_0 ) );
    RNOK( xWriteMotionPredFlags_FGS ( rcMbDataAccess, pcMbDataAccessBase, eMbMode, LIST_1 ) );
    RNOK( xWriteReferenceFrames     ( rcMbDataAccess,                     eMbMode, LIST_0 ) );
    RNOK( xWriteReferenceFrames     ( rcMbDataAccess,                     eMbMode, LIST_1 ) );
    RNOK( xWriteMotionVectors       ( rcMbDataAccess,                     eMbMode, LIST_0 ) );
    RNOK( xWriteMotionVectors       ( rcMbDataAccess,                     eMbMode, LIST_1 ) );
  }
  else
  {
    RNOK( xWriteMotionPredFlags_FGS ( rcMbDataAccess, pcMbDataAccessBase, eMbMode, LIST_0 ) );
    RNOK( xWriteReferenceFrames     ( rcMbDataAccess,                     eMbMode, LIST_0 ) );
    RNOK( xWriteMotionVectors       ( rcMbDataAccess,                     eMbMode, LIST_0 ) );
  }
  //===== residual prediction flag =====
  Bool bBaseCoeff = ( pcMbDataAccessBase->getMbData().getMbCbp() != 0 );
  RNOK( m_pcMbSymbolWriteIf->resPredFlag_FGS( rcMbDataAccess, bBaseCoeff ) );

  return Err::m_nOK;
}



ErrVal MbCoder::xWriteIntraPredModes( MbDataAccess& rcMbDataAccess )
{
  ROFRS( rcMbDataAccess.getMbData().isIntra(), Err::m_nOK );

  if( rcMbDataAccess.getMbData().isIntra4x4() )
  {
    if( rcMbDataAccess.getSH().getPPS().getTransform8x8ModeFlag() )
    {
      RNOK( m_pcMbSymbolWriteIf->transformSize8x8Flag( rcMbDataAccess ) );
    }

    if( rcMbDataAccess.getMbData().isTransformSize8x8() )
    {
      for( B8x8Idx cIdx; cIdx.isLegal(); cIdx++ )
      {
        RNOK( m_pcMbSymbolWriteIf->intraPredModeLuma( rcMbDataAccess, cIdx ) );
      }
    }
    else
    {
      for( S4x4Idx cIdx; cIdx.isLegal(); cIdx++ )
      {
        RNOK( m_pcMbSymbolWriteIf->intraPredModeLuma( rcMbDataAccess, cIdx ) );
      }
    }
  }

  if( rcMbDataAccess.getMbData().isIntra4x4() || rcMbDataAccess.getMbData().isIntra16x16() )
  {
    RNOK( m_pcMbSymbolWriteIf->intraPredModeChroma( rcMbDataAccess ) );
  }

  return Err::m_nOK;
}




ErrVal MbCoder::xWriteBlockMv( MbDataAccess& rcMbDataAccess, B8x8Idx c8x8Idx, ListIdx eLstIdx )
{
  BlkMode eBlkMode = rcMbDataAccess.getMbData().getBlkMode( c8x8Idx.b8x8Index() );

  ParIdx8x8 eParIdx = c8x8Idx.b8x8();
  switch( eBlkMode )
  {
    case BLK_8x8:
    {
      RNOK( m_pcMbSymbolWriteIf->mvd( rcMbDataAccess, eLstIdx, eParIdx ) );
      break;
    }
    case BLK_8x4:
    {
      RNOK( m_pcMbSymbolWriteIf->mvd( rcMbDataAccess, eLstIdx, eParIdx, SPART_8x4_0 ) );
      RNOK( m_pcMbSymbolWriteIf->mvd( rcMbDataAccess, eLstIdx, eParIdx, SPART_8x4_1 ) );
      break;
    }
    case BLK_4x8:
    {
      RNOK( m_pcMbSymbolWriteIf->mvd( rcMbDataAccess, eLstIdx, eParIdx, SPART_4x8_0 ) );
      RNOK( m_pcMbSymbolWriteIf->mvd( rcMbDataAccess, eLstIdx, eParIdx, SPART_4x8_1 ) );
      break;
    }
    case BLK_4x4:
    {
      RNOK( m_pcMbSymbolWriteIf->mvd( rcMbDataAccess, eLstIdx, eParIdx, SPART_4x4_0 ) );
      RNOK( m_pcMbSymbolWriteIf->mvd( rcMbDataAccess, eLstIdx, eParIdx, SPART_4x4_1 ) );
      RNOK( m_pcMbSymbolWriteIf->mvd( rcMbDataAccess, eLstIdx, eParIdx, SPART_4x4_2 ) );
      RNOK( m_pcMbSymbolWriteIf->mvd( rcMbDataAccess, eLstIdx, eParIdx, SPART_4x4_3 ) );
      break;
    }
    case BLK_SKIP:
    {
      break;
    }
    default:
    {
      AF();
      return Err::m_nERR;
    }
  }
  return Err::m_nOK;
}




ErrVal
MbCoder::xWriteMotionPredFlags_FGS( MbDataAccess&  rcMbDataAccess,
                                    MbDataAccess*  pcMbDataAccessBase, 
                                    MbMode         eMbMode,
                                    ListIdx        eLstIdx )
{
  AOT_DBG( rcMbDataAccess.getMbData().isIntra() );

  ROFRS  ( rcMbDataAccess.getSH().getAdaptivePredictionFlag (), Err::m_nOK );
  ROF    ( pcMbDataAccessBase );

  switch( eMbMode )
  {
  case MODE_SKIP:
    {
      break;
    }

  case MODE_16x16:
    {
      if( rcMbDataAccess     .getMbData().isBlockFwdBwd( B_8x8_0, eLstIdx) &&
          pcMbDataAccessBase->getMbData().isBlockFwdBwd( B_8x8_0, eLstIdx)   )
      {
        RNOK( m_pcMbSymbolWriteIf->motionPredFlag( rcMbDataAccess, eLstIdx ) );
      }
      break;
    }
    
  case MODE_16x8:
    {
      if( rcMbDataAccess     .getMbData().isBlockFwdBwd( B_8x8_0, eLstIdx) &&
          pcMbDataAccessBase->getMbData().isBlockFwdBwd( B_8x8_0, eLstIdx)   )
      {
        RNOK( m_pcMbSymbolWriteIf->motionPredFlag( rcMbDataAccess, eLstIdx, PART_16x8_0 ) );
      }

      if( rcMbDataAccess     .getMbData().isBlockFwdBwd( B_8x8_2, eLstIdx) &&
          pcMbDataAccessBase->getMbData().isBlockFwdBwd( B_8x8_2, eLstIdx)   )
      {
        RNOK( m_pcMbSymbolWriteIf->motionPredFlag( rcMbDataAccess, eLstIdx, PART_16x8_1 ) );
      }
      break;
    }
    
  case MODE_8x16:
    {
      if( rcMbDataAccess     .getMbData().isBlockFwdBwd( B_8x8_0, eLstIdx) &&
          pcMbDataAccessBase->getMbData().isBlockFwdBwd( B_8x8_0, eLstIdx)   )
      {
        RNOK( m_pcMbSymbolWriteIf->motionPredFlag( rcMbDataAccess, eLstIdx, PART_8x16_0 ) );
      }

      if( rcMbDataAccess     .getMbData().isBlockFwdBwd( B_8x8_1, eLstIdx) &&
          pcMbDataAccessBase->getMbData().isBlockFwdBwd( B_8x8_1, eLstIdx)   )
      {
        RNOK( m_pcMbSymbolWriteIf->motionPredFlag( rcMbDataAccess, eLstIdx, PART_8x16_1 ) );
      }
      break;
    }
    
  case MODE_8x8:
  case MODE_8x8ref0:
    {
      for( B8x8Idx c8x8Idx; c8x8Idx.isLegal(); c8x8Idx++ )
      {
        if( BLK_SKIP != rcMbDataAccess.getMbData().getBlkMode   ( c8x8Idx.b8x8Index() ) &&
            rcMbDataAccess            .getMbData().isBlockFwdBwd( c8x8Idx.b8x8Index(), eLstIdx) &&
            pcMbDataAccessBase       ->getMbData().isBlockFwdBwd( c8x8Idx.b8x8Index(), eLstIdx)   )
        {
          RNOK( m_pcMbSymbolWriteIf->motionPredFlag( rcMbDataAccess, eLstIdx, c8x8Idx.b8x8() ) );
        }
      }
      break;
    }
    
  default:
    {
      AF();
      return Err::m_nERR;
    }
  }

  return Err::m_nOK;
}


ErrVal
MbCoder::xWriteMotionPredFlags( MbDataAccess&  rcMbDataAccess,
                                MbMode         eMbMode,
                                ListIdx        eLstIdx )
{ 
  AOT_DBG( rcMbDataAccess.getMbData().isIntra() );

  ROFRS  ( rcMbDataAccess.getSH().getAdaptivePredictionFlag (), Err::m_nOK );

  switch( eMbMode )
  {
  case MODE_SKIP:
    {
      break;
    }

  case MODE_16x16:
    {
      if( rcMbDataAccess.getMbData().isBlockFwdBwd( B_8x8_0, eLstIdx) )
      {
        RNOK( m_pcMbSymbolWriteIf->motionPredFlag( rcMbDataAccess, eLstIdx ) );
      }
      break;
    }

  case MODE_16x8:
    {
      if( rcMbDataAccess.getMbData().isBlockFwdBwd( B_8x8_0, eLstIdx) )
      {
        RNOK( m_pcMbSymbolWriteIf->motionPredFlag( rcMbDataAccess, eLstIdx, PART_16x8_0 ) );
      }

      if( rcMbDataAccess.getMbData().isBlockFwdBwd( B_8x8_2, eLstIdx) )
      {
        RNOK( m_pcMbSymbolWriteIf->motionPredFlag( rcMbDataAccess, eLstIdx, PART_16x8_1 ) );
      }
      break;
    }

  case MODE_8x16:
    {
      if( rcMbDataAccess.getMbData().isBlockFwdBwd( B_8x8_0, eLstIdx) )
      {
        RNOK( m_pcMbSymbolWriteIf->motionPredFlag( rcMbDataAccess, eLstIdx, PART_8x16_0 ) );
      }

      if( rcMbDataAccess.getMbData().isBlockFwdBwd( B_8x8_1, eLstIdx) )
      {
        RNOK( m_pcMbSymbolWriteIf->motionPredFlag( rcMbDataAccess, eLstIdx, PART_8x16_1 ) );
      }
      break;
    }

  case MODE_8x8:
  case MODE_8x8ref0:
    {
      for( B8x8Idx c8x8Idx; c8x8Idx.isLegal(); c8x8Idx++ )
      {
        if( BLK_SKIP != rcMbDataAccess.getMbData().getBlkMode   ( c8x8Idx.b8x8Index() ) &&
           rcMbDataAccess             .getMbData().isBlockFwdBwd( c8x8Idx.b8x8Index(), eLstIdx) )
        {
          RNOK( m_pcMbSymbolWriteIf->motionPredFlag( rcMbDataAccess, eLstIdx, c8x8Idx.b8x8() ) );
        }
      }
      break;
    }

  default:
    {
      AF();
      return Err::m_nERR;
    }
  }

  return Err::m_nOK;
}


ErrVal
MbCoder::xWriteReferenceFrames( MbDataAccess& rcMbDataAccess,
                                MbMode        eMbMode,
                                ListIdx       eLstIdx )
{
  AOT_DBG( rcMbDataAccess.getMbData().isIntra() );

  if( 1 == rcMbDataAccess.getNumActiveRef( eLstIdx ) )
  {
    return Err::m_nOK;
  }

  Bool          bPred = rcMbDataAccess.getSH().getAdaptivePredictionFlag();
  MbMotionData& rcMot = rcMbDataAccess.getMbMotionData( eLstIdx );

  switch( eMbMode )
  {
  case MODE_SKIP:
    {
      break;
    }
    
  case MODE_16x16:
    {
      if( rcMbDataAccess.getMbData().isBlockFwdBwd( B_8x8_0, eLstIdx) && ( ! bPred || ! rcMot.getMotPredFlag() ) )
      {
        RNOK( m_pcMbSymbolWriteIf->refFrame( rcMbDataAccess, eLstIdx ) );
      }
      break;
    }
    
  case MODE_16x8:
    {
      if( rcMbDataAccess.getMbData().isBlockFwdBwd( B_8x8_0, eLstIdx) && ( ! bPred || ! rcMot.getMotPredFlag( PART_16x8_0 ) ) )
      {
        RNOK( m_pcMbSymbolWriteIf->refFrame( rcMbDataAccess, eLstIdx, PART_16x8_0 ) );
      }

      if( rcMbDataAccess.getMbData().isBlockFwdBwd( B_8x8_2, eLstIdx) && ( ! bPred || ! rcMot.getMotPredFlag( PART_16x8_1 ) ) )
      {
        RNOK( m_pcMbSymbolWriteIf->refFrame( rcMbDataAccess, eLstIdx, PART_16x8_1 ) );
      }
      break;
    }
    
  case MODE_8x16:
    {
      if( rcMbDataAccess.getMbData().isBlockFwdBwd( B_8x8_0, eLstIdx) && ( ! bPred || ! rcMot.getMotPredFlag( PART_8x16_0 ) ) )