/* The copyright in this software is being made available under the BSD
 * License, included below. This software may be subject to other third party
 * and contributor rights, including patent rights, and no such rights are
 * granted under this license.  
 *
 * Copyright (c) 2010-2012, ITU/ISO/IEC
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  * Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *  * Neither the name of the ITU/ISO/IEC nor the names of its contributors may
 *    be used to endorse or promote products derived from this software without
 *    specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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 */

/** \file     TDecEntropy.cpp
    \brief    entropy decoder class
*/

#include "TDecEntropy.h"

//! \ingroup TLibDecoder
//! \{

Void TDecEntropy::setEntropyDecoder         ( TDecEntropyIf* p )
{
  m_pcEntropyDecoderIf = p;
}

#include "TLibCommon/TComAdaptiveLoopFilter.h"
#include "TLibCommon/TComSampleAdaptiveOffset.h"

Void TDecEntropy::decodeSkipFlag( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth )
{
  m_pcEntropyDecoderIf->parseSkipFlag( pcCU, uiAbsPartIdx, uiDepth );
}

/** decode merge flag
 * \param pcSubCU
 * \param uiAbsPartIdx 
 * \param uiDepth
 * \param uiPUIdx 
 * \returns Void
 */
Void TDecEntropy::decodeMergeFlag( TComDataCU* pcSubCU, UInt uiAbsPartIdx, UInt uiDepth, UInt uiPUIdx )
{ 
  // at least one merge candidate exists
  m_pcEntropyDecoderIf->parseMergeFlag( pcSubCU, uiAbsPartIdx, uiDepth, uiPUIdx );
}

#if LGE_ILLUCOMP_B0045
Void TDecEntropy::decodeICFlag( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth )
{
  pcCU->setICFlagSubParts( false , uiAbsPartIdx, 0, uiDepth );

  if (pcCU->isIntra(uiAbsPartIdx) || (pcCU->getSlice()->getViewId() == 0) 
#if !LGE_ILLUCOMP_DEPTH_C0046
      || pcCU->getSlice()->getSPS()->isDepth()
#endif
      )
  {
    return;
  }

  if(!pcCU->getSlice()->getApplyIC())
    return;

#if LGE_ILLUCOMP_DEPTH_C0046
  if(pcCU->isICFlagRequired(uiAbsPartIdx, uiDepth)) //This modification is not needed after integrating JCT3V-C0137
#else
  if(pcCU->isICFlagRequired(uiAbsPartIdx))
#endif
    m_pcEntropyDecoderIf->parseICFlag( pcCU, uiAbsPartIdx, uiDepth );
}
#endif
/** decode merge index
 * \param pcCU
 * \param uiPartIdx 
 * \param uiAbsPartIdx 
 * \param puhInterDirNeighbours pointer to list of inter direction from the casual neighbours
 * \param pcMvFieldNeighbours pointer to list of motion vector field from the casual neighbours
 * \param uiDepth
 * \returns Void
 */
Void TDecEntropy::decodeMergeIndex( TComDataCU* pcCU, UInt uiPartIdx, UInt uiAbsPartIdx, PartSize eCUMode, UChar* puhInterDirNeighbours, TComMvField* pcMvFieldNeighbours, UInt uiDepth )
{
  UInt uiMergeIndex = 0;
  m_pcEntropyDecoderIf->parseMergeIndex( pcCU, uiMergeIndex, uiAbsPartIdx, uiDepth );
  pcCU->setMergeIndexSubParts( uiMergeIndex, uiAbsPartIdx, uiPartIdx, uiDepth );
}

#if QC_ARP_D0177
Void TDecEntropy::decodeARPW( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth, TComDataCU* pcSubCU, UInt uiPUIdx )
{
  if( pcCU->getSlice()->getViewId() == 0 || pcCU->getSlice()->getIsDepth() == true || !pcCU->getSlice()->getARPStepNum() )
    return;
  assert( !pcCU->isIntra( uiAbsPartIdx ) );
  Bool bResPredAvailable = !pcCU->getSlice()->getARPStepNum() ? false: ((pcCU->getPartitionSize(uiAbsPartIdx)==SIZE_2Nx2N || pcCU->isSkipped(uiAbsPartIdx)) ? true: false);
  if(!bResPredAvailable)
    pcCU->setARPWSubParts( 0 , uiAbsPartIdx, uiDepth );  
  else
    m_pcEntropyDecoderIf->parseARPW( pcCU , uiAbsPartIdx , uiDepth );
}
#endif
Void TDecEntropy::decodeSplitFlag   ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth )
{
  m_pcEntropyDecoderIf->parseSplitFlag( pcCU, uiAbsPartIdx, uiDepth );
}

Void TDecEntropy::decodePredMode( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth )
{
  m_pcEntropyDecoderIf->parsePredMode( pcCU, uiAbsPartIdx, uiDepth );
  
#if RWTH_SDC_DLT_B0036
  // if B-Slice, code SDC flag later
  if( !pcCU->getSlice()->isInterB() && pcCU->isIntra(uiAbsPartIdx) && pcCU->getSlice()->getSPS()->isDepth() )
  {
    // decode SDC flag
    decodeSDCFlag(pcCU, uiAbsPartIdx, uiDepth);
  }
#endif
}

Void TDecEntropy::decodePartSize( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth )
{
#if RWTH_SDC_DLT_B0036
  if( !pcCU->getSlice()->isInterB() && pcCU->isIntra(uiAbsPartIdx) && pcCU->getSDCFlag(uiAbsPartIdx)  )
  {
    pcCU->setPartSizeSubParts( SIZE_2Nx2N, uiAbsPartIdx, uiDepth );
    pcCU->setSizeSubParts( g_uiMaxCUWidth>>uiDepth, g_uiMaxCUHeight>>uiDepth, uiAbsPartIdx, uiDepth );
    return;
  }
#endif
  
  m_pcEntropyDecoderIf->parsePartSize( pcCU, uiAbsPartIdx, uiDepth );
  
#if RWTH_SDC_DLT_B0036
  if( pcCU->getSlice()->isInterB() && pcCU->getSlice()->getSPS()->isDepth() && pcCU->isIntra(uiAbsPartIdx) )
  {
    // decode SDC flag
    decodeSDCFlag(pcCU, uiAbsPartIdx, uiDepth);
    
    if( pcCU->getSDCFlag(uiAbsPartIdx) )
    {
      // part size is also known for SDC intra
      pcCU->setPartSizeSubParts( SIZE_2Nx2N, uiAbsPartIdx, uiDepth );
      pcCU->setSizeSubParts( g_uiMaxCUWidth>>uiDepth, g_uiMaxCUHeight>>uiDepth, uiAbsPartIdx, uiDepth );
    }
  }
#endif
}

Void TDecEntropy::decodePredInfo    ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth, TComDataCU* pcSubCU )
{
#if RWTH_SDC_DLT_B0036
  if( pcCU->getSDCFlag(uiAbsPartIdx) )
  {
    decodeSDCPredMode(pcCU, uiAbsPartIdx, uiDepth);
    return;
  }
#endif
  
  PartSize eMode = pcCU->getPartitionSize( uiAbsPartIdx );
  
  if( pcCU->isIntra( uiAbsPartIdx ) )                                 // If it is Intra mode, encode intra prediction mode.
  {
    if( eMode == SIZE_NxN )                                         // if it is NxN size, encode 4 intra directions.
    {
      UInt uiPartOffset = ( pcCU->getPic()->getNumPartInCU() >> ( pcCU->getDepth(uiAbsPartIdx) << 1 ) ) >> 2;
      // if it is NxN size, this size might be the smallest partition size.                                                         // if it is NxN size, this size might be the smallest partition size.
      decodeIntraDirModeLuma( pcCU, uiAbsPartIdx,                  uiDepth+1 );
      decodeIntraDirModeLuma( pcCU, uiAbsPartIdx + uiPartOffset,   uiDepth+1 );
      decodeIntraDirModeLuma( pcCU, uiAbsPartIdx + uiPartOffset*2, uiDepth+1 );
      decodeIntraDirModeLuma( pcCU, uiAbsPartIdx + uiPartOffset*3, uiDepth+1 );
      decodeIntraDirModeChroma( pcCU, uiAbsPartIdx, uiDepth );
    }
    else                                                                // if it is not NxN size, encode 1 intra directions
    {
      decodeIntraDirModeLuma  ( pcCU, uiAbsPartIdx, uiDepth );
      decodeIntraDirModeChroma( pcCU, uiAbsPartIdx, uiDepth );
    }
  }
  else                                                                // if it is Inter mode, encode motion vector and reference index
  {
    decodePUWise( pcCU, uiAbsPartIdx, uiDepth, pcSubCU );
#if QC_ARP_D0177
    if( pcCU->getSlice()->getSPS()->getUseAdvRP() )
    {
      decodeARPW( pcCU , uiAbsPartIdx , uiDepth, pcSubCU, 0  );
    }
#endif
  }
}

/** Parse I_PCM information. 
 * \param pcCU  pointer to CUpointer to CU
 * \param uiAbsPartIdx CU index
 * \param uiDepth CU depth
 * \returns Void
 */
Void TDecEntropy::decodeIPCMInfo( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth )
{
  if(!pcCU->getSlice()->getSPS()->getUsePCM()
    || pcCU->getWidth(uiAbsPartIdx) > (1<<pcCU->getSlice()->getSPS()->getPCMLog2MaxSize())
    || pcCU->getWidth(uiAbsPartIdx) < (1<<pcCU->getSlice()->getSPS()->getPCMLog2MinSize()) )
  {
    return;
  }
  
#if RWTH_SDC_DLT_B0036
  if( pcCU->getSDCFlag(uiAbsPartIdx) )
  {
    return;
  }
#endif
  
  m_pcEntropyDecoderIf->parseIPCMInfo( pcCU, uiAbsPartIdx, uiDepth );
}

Void TDecEntropy::decodeIntraDirModeLuma  ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth )
{
  m_pcEntropyDecoderIf->parseIntraDirLumaAng( pcCU, uiAbsPartIdx, uiDepth );
}

Void TDecEntropy::decodeIntraDirModeChroma( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth )
{
  m_pcEntropyDecoderIf->parseIntraDirChroma( pcCU, uiAbsPartIdx, uiDepth );
}

/** decode motion information for every PU block.
 * \param pcCU
 * \param uiAbsPartIdx 
 * \param uiDepth
 * \param pcSubCU
 * \returns Void
 */
Void TDecEntropy::decodePUWise( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth, TComDataCU* pcSubCU )
{
  PartSize ePartSize = pcCU->getPartitionSize( uiAbsPartIdx );
  UInt uiNumPU = ( ePartSize == SIZE_2Nx2N ? 1 : ( ePartSize == SIZE_NxN ? 4 : 2 ) );
  UInt uiPUOffset = ( g_auiPUOffset[UInt( ePartSize )] << ( ( pcCU->getSlice()->getSPS()->getMaxCUDepth() - uiDepth ) << 1 ) ) >> 4;

#if CU_BASED_MRG_CAND_LIST
#if H3D_IVMP
  TComMvField cMvFieldNeighbours[MRG_MAX_NUM_CANDS_MEM << 1]; // double length for mv of both lists
  UChar uhInterDirNeighbours[MRG_MAX_NUM_CANDS_MEM];
  for ( UInt ui = 0; ui < MRG_MAX_NUM_CANDS_MEM; ui++ )
#else
  TComMvField cMvFieldNeighbours[MRG_MAX_NUM_CANDS << 1]; // double length for mv of both lists
  UChar uhInterDirNeighbours[MRG_MAX_NUM_CANDS];
  for ( UInt ui = 0; ui < MRG_MAX_NUM_CANDS; ui++ )
#endif
  {
    uhInterDirNeighbours[ui] = 0;
  }
  Int numValidMergeCand = 0;
  bool isMerged = false;
#endif

  pcSubCU->copyInterPredInfoFrom( pcCU, uiAbsPartIdx, REF_PIC_LIST_0 );
  pcSubCU->copyInterPredInfoFrom( pcCU, uiAbsPartIdx, REF_PIC_LIST_1 );
  for ( UInt uiPartIdx = 0, uiSubPartIdx = uiAbsPartIdx; uiPartIdx < uiNumPU; uiPartIdx++, uiSubPartIdx += uiPUOffset )
  {
#if !CU_BASED_MRG_CAND_LIST
#if H3D_IVMP
    TComMvField cMvFieldNeighbours[MRG_MAX_NUM_CANDS_MEM << 1]; // double length for mv of both lists
    UChar uhInterDirNeighbours[MRG_MAX_NUM_CANDS_MEM];
    Int numValidMergeCand = 0;
    for( UInt ui = 0; ui < MRG_MAX_NUM_CANDS_MEM; ++ui )
#else
    TComMvField cMvFieldNeighbours[MRG_MAX_NUM_CANDS << 1]; // double length for mv of both lists
    UChar uhInterDirNeighbours[MRG_MAX_NUM_CANDS];
    Int numValidMergeCand = 0;
    for( UInt ui = 0; ui < MRG_MAX_NUM_CANDS; ++ui )
#endif
    {
      uhInterDirNeighbours[ui] = 0;
    }
#endif
    decodeMergeFlag( pcCU, uiSubPartIdx, uiDepth, uiPartIdx );
    if ( pcCU->getMergeFlag( uiSubPartIdx ) )
    {
      decodeMergeIndex( pcCU, uiPartIdx, uiSubPartIdx, ePartSize, uhInterDirNeighbours, cMvFieldNeighbours, uiDepth );
#if CU_BASED_MRG_CAND_LIST
      UInt uiMergeIndex = pcCU->getMergeIndex(uiSubPartIdx);
      if ( pcCU->getSlice()->getPPS()->getLog2ParallelMergeLevelMinus2() && ePartSize != SIZE_2Nx2N && pcSubCU->getWidth( 0 ) <= 8 ) 
      {
        pcSubCU->setPartSizeSubParts( SIZE_2Nx2N, 0, uiDepth );
        if ( !isMerged )
        {
          pcSubCU->getInterMergeCandidates( 0, 0, uiDepth, cMvFieldNeighbours, uhInterDirNeighbours, numValidMergeCand );
          isMerged = true;
        }
        pcSubCU->setPartSizeSubParts( ePartSize, 0, uiDepth );
      }
      else
      {
        uiMergeIndex = pcCU->getMergeIndex(uiSubPartIdx);
        pcSubCU->getInterMergeCandidates( uiSubPartIdx-uiAbsPartIdx, uiPartIdx, uiDepth, cMvFieldNeighbours, uhInterDirNeighbours, numValidMergeCand, uiMergeIndex );
      }
#else
      UInt uiMergeIndex = pcCU->getMergeIndex(uiSubPartIdx);
#if MERL_VSP_C0152
      Int iVSPIndexTrue[3] = {-1, -1, -1};
      pcSubCU->getInterMergeCandidates( uiSubPartIdx-uiAbsPartIdx, uiPartIdx, uiDepth, cMvFieldNeighbours, uhInterDirNeighbours, numValidMergeCand, iVSPIndexTrue, uiMergeIndex );

#if HHI_MPI
      if(pcCU->getTextureModeDepth( uiSubPartIdx ) == uiDepth)//MPI is used
      {
        TComDataCU *pcTextureCU = pcCU->getSlice()->getTexturePic()->getCU( pcCU->getAddr() );
        UInt uiCurrPartNumb = pcCU->getPic()->getNumPartInCU() >> (uiDepth << 1);
        for( UInt ui = 0; ui < uiCurrPartNumb; ui++ )
        {
          Int vspIdx = pcTextureCU->getVSPIndex( uiAbsPartIdx + ui);
          pcCU->setVSPIndex( uiAbsPartIdx + ui, vspIdx);
        }
      }
      else // MPI not used
#endif
      {
        Int iVSPIdx = 0;
        Int numVspIdx;
        numVspIdx = 3;
        for (Int i = 0; i < numVspIdx; i++)
        {
          if (iVSPIndexTrue[i] == uiMergeIndex)
            {
              iVSPIdx = i+1;
              break;
            }
        }
        pcCU->setVSPIndexSubParts( iVSPIdx, uiSubPartIdx, uiPartIdx, uiDepth );  //Initialize the VSP, may change later in get InterMergeCandidates()
      }

#else
      pcSubCU->getInterMergeCandidates( uiSubPartIdx-uiAbsPartIdx, uiPartIdx, uiDepth, cMvFieldNeighbours, uhInterDirNeighbours, numValidMergeCand, uiMergeIndex );
#endif
#endif
      pcCU->setInterDirSubParts( uhInterDirNeighbours[uiMergeIndex], uiSubPartIdx, uiPartIdx, uiDepth );

      TComMv cTmpMv( 0, 0 );
      for ( UInt uiRefListIdx = 0; uiRefListIdx < 2; uiRefListIdx++ )
      {        
        if ( pcCU->getSlice()->getNumRefIdx( RefPicList( uiRefListIdx ) ) > 0 )
        {
          pcCU->setMVPIdxSubParts( 0, RefPicList( uiRefListIdx ), uiSubPartIdx, uiPartIdx, uiDepth);
          pcCU->setMVPNumSubParts( 0, RefPicList( uiRefListIdx ), uiSubPartIdx, uiPartIdx, uiDepth);
          pcCU->getCUMvField( RefPicList( uiRefListIdx ) )->setAllMvd( cTmpMv, ePartSize, uiSubPartIdx, uiDepth, uiPartIdx );
          pcCU->getCUMvField( RefPicList( uiRefListIdx ) )->setAllMvField( cMvFieldNeighbours[ 2*uiMergeIndex + uiRefListIdx ], ePartSize, uiSubPartIdx, uiDepth, uiPartIdx );

        }
      }
    }
    else
    {
      decodeInterDirPU( pcCU, uiSubPartIdx, uiDepth, uiPartIdx );
      for ( UInt uiRefListIdx = 0; uiRefListIdx < 2; uiRefListIdx++ )
      {        
        if ( pcCU->getSlice()->getNumRefIdx( RefPicList( uiRefListIdx ) ) > 0 )
        {
          decodeRefFrmIdxPU( pcCU,    uiSubPartIdx,              uiDepth, uiPartIdx, RefPicList( uiRefListIdx ) );
          decodeMvdPU      ( pcCU,    uiSubPartIdx,              uiDepth, uiPartIdx, RefPicList( uiRefListIdx ) );
          decodeMVPIdxPU   ( pcSubCU, uiSubPartIdx-uiAbsPartIdx, uiDepth, uiPartIdx, RefPicList( uiRefListIdx ) );
        }
      }
    }
  }
  return;
}

/** decode inter direction for a PU block
 * \param pcCU
 * \param uiAbsPartIdx 
 * \param uiDepth
 * \param uiPartIdx 
 * \returns Void
 */
Void TDecEntropy::decodeInterDirPU( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth, UInt uiPartIdx )
{
  UInt uiInterDir;

  if ( pcCU->getSlice()->isInterP() )
  {
    uiInterDir = 1;
  }
  else
  {
    m_pcEntropyDecoderIf->parseInterDir( pcCU, uiInterDir, uiAbsPartIdx, uiDepth );
  }

  pcCU->setInterDirSubParts( uiInterDir, uiAbsPartIdx, uiPartIdx, uiDepth );
}

Void TDecEntropy::decodeRefFrmIdxPU( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth, UInt uiPartIdx, RefPicList eRefList )
{
  if(pcCU->getSlice()->getNumRefIdx(REF_PIC_LIST_C) > 0 && pcCU->getInterDir( uiAbsPartIdx ) != 3)
  {
    if(eRefList == REF_PIC_LIST_1)
    {
      return;
    }

    Int iRefFrmIdx = 0;
    Int iRefFrmIdxTemp;
    UInt uiInterDir;
    RefPicList eRefListTemp;

    PartSize ePartSize = pcCU->getPartitionSize( uiAbsPartIdx );

    if ( pcCU->getSlice()->getNumRefIdx ( REF_PIC_LIST_C ) > 1 )
    {
      m_pcEntropyDecoderIf->parseRefFrmIdx( pcCU, iRefFrmIdx, uiAbsPartIdx, uiDepth, REF_PIC_LIST_C );
    }
    else
    {
      iRefFrmIdx=0;
    }
    uiInterDir = pcCU->getSlice()->getListIdFromIdxOfLC(iRefFrmIdx) + 1;
    iRefFrmIdxTemp = pcCU->getSlice()->getRefIdxFromIdxOfLC(iRefFrmIdx);
    eRefListTemp = (RefPicList)pcCU->getSlice()->getListIdFromIdxOfLC(iRefFrmIdx);

    pcCU->getCUMvField( eRefListTemp )->setAllRefIdx( iRefFrmIdxTemp, ePartSize, uiAbsPartIdx, uiDepth, uiPartIdx );

    pcCU->setInterDirSubParts( uiInterDir, uiAbsPartIdx, uiPartIdx, uiDepth );
  }
  else
  {
    Int iRefFrmIdx = 0;
    Int iParseRefFrmIdx = pcCU->getInterDir( uiAbsPartIdx ) & ( 1 << eRefList );

    if ( pcCU->getSlice()->getNumRefIdx( eRefList ) > 1 && iParseRefFrmIdx )
    {
      m_pcEntropyDecoderIf->parseRefFrmIdx( pcCU, iRefFrmIdx, uiAbsPartIdx, uiDepth, eRefList );
    }
    else if ( !iParseRefFrmIdx )
    {
      iRefFrmIdx = NOT_VALID;
    }
    else
    {
      iRefFrmIdx = 0;
    }

    PartSize ePartSize = pcCU->getPartitionSize( uiAbsPartIdx );
    pcCU->getCUMvField( eRefList )->setAllRefIdx( iRefFrmIdx, ePartSize, uiAbsPartIdx, uiDepth, uiPartIdx );
  }
}

/** decode motion vector difference for a PU block
 * \param pcCU
 * \param uiAbsPartIdx 
 * \param uiDepth
 * \param uiPartIdx
 * \param eRefList 
 * \returns Void
 */
Void TDecEntropy::decodeMvdPU( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth, UInt uiPartIdx, RefPicList eRefList )
{
  if ( pcCU->getInterDir( uiAbsPartIdx ) & ( 1 << eRefList ) )
  {
    m_pcEntropyDecoderIf->parseMvd( pcCU, uiAbsPartIdx, uiPartIdx, uiDepth, eRefList );
  }
}

Void TDecEntropy::decodeMVPIdxPU( TComDataCU* pcSubCU, UInt uiPartAddr, UInt uiDepth, UInt uiPartIdx, RefPicList eRefList )
{
  Int iMVPIdx = -1;

  TComMv cZeroMv( 0, 0 );
  TComMv cMv     = cZeroMv;
  Int    iRefIdx = -1;

  TComCUMvField* pcSubCUMvField = pcSubCU->getCUMvField( eRefList );
  AMVPInfo* pAMVPInfo = pcSubCUMvField->getAMVPInfo();

  iRefIdx = pcSubCUMvField->getRefIdx(uiPartAddr);
  cMv = cZeroMv;

  if ( (pcSubCU->getInterDir(uiPartAddr) & ( 1 << eRefList )) && (pcSubCU->getAMVPMode(uiPartAddr) == AM_EXPL) )
  {
#if H3D_IVMP
    const Int iNumAMVPCands = AMVP_MAX_NUM_CANDS + ( pcSubCU->getSlice()->getSPS()->getMultiviewMvPredMode() ? 1 : 0 );
    m_pcEntropyDecoderIf->parseMVPIdx( iMVPIdx, iNumAMVPCands );
#else
    m_pcEntropyDecoderIf->parseMVPIdx( iMVPIdx );
#endif
  }
#if H3D_IVMP
  pcSubCU->fillMvpCand(uiPartIdx, uiPartAddr, eRefList, iRefIdx, pAMVPInfo, iMVPIdx);
#else
  pcSubCU->fillMvpCand(uiPartIdx, uiPartAddr, eRefList, iRefIdx, pAMVPInfo);
#endif
  pcSubCU->setMVPNumSubParts(pAMVPInfo->iN, eRefList, uiPartAddr, uiPartIdx, uiDepth);
  pcSubCU->setMVPIdxSubParts( iMVPIdx, eRefList, uiPartAddr, uiPartIdx, uiDepth );
  if ( iRefIdx >= 0 )
  {
    m_pcPrediction->getMvPredAMVP( pcSubCU, uiPartIdx, uiPartAddr, eRefList, iRefIdx, cMv);
    cMv += pcSubCUMvField->getMvd( uiPartAddr );
  }

  PartSize ePartSize = pcSubCU->getPartitionSize( uiPartAddr );
  pcSubCU->getCUMvField( eRefList )->setAllMv(cMv, ePartSize, uiPartAddr, 0, uiPartIdx);
}

Void TDecEntropy::xDecodeTransform( TComDataCU* pcCU, UInt offsetLuma, UInt offsetChroma, UInt uiAbsPartIdx, UInt absTUPartIdx, UInt uiDepth, UInt width, UInt height, UInt uiTrIdx, UInt uiInnerQuadIdx, UInt& uiYCbfFront3, UInt& uiUCbfFront3, UInt& uiVCbfFront3, Bool& bCodeDQP )
{
  UInt uiSubdiv;
  const UInt uiLog2TrafoSize = g_aucConvertToBit[pcCU->getSlice()->getSPS()->getMaxCUWidth()]+2 - uiDepth;

  if(uiTrIdx==0)
  {
    m_bakAbsPartIdxCU = uiAbsPartIdx;
  }
  if( uiLog2TrafoSize == 2 )
  {
    UInt partNum = pcCU->getPic()->getNumPartInCU() >> ( ( uiDepth - 1 ) << 1 );
    if( ( uiAbsPartIdx % partNum ) == 0 )
    {
      m_uiBakAbsPartIdx   = uiAbsPartIdx;
      m_uiBakChromaOffset = offsetChroma;
    }
  }
  if( pcCU->getPredictionMode(uiAbsPartIdx) == MODE_INTRA && pcCU->getPartitionSize(uiAbsPartIdx) == SIZE_NxN && uiDepth == pcCU->getDepth(uiAbsPartIdx) )
  {
    uiSubdiv = 1;
  }
  else if( (pcCU->getSlice()->getSPS()->getQuadtreeTUMaxDepthInter() == 1) && (pcCU->getPredictionMode(uiAbsPartIdx) == MODE_INTER) && ( pcCU->getPartitionSize(uiAbsPartIdx) != SIZE_2Nx2N ) && (uiDepth == pcCU->getDepth(uiAbsPartIdx)) )
  {
    uiSubdiv = (uiLog2TrafoSize > pcCU->getQuadtreeTULog2MinSizeInCU(uiAbsPartIdx));
  }
  else if( uiLog2TrafoSize > pcCU->getSlice()->getSPS()->getQuadtreeTULog2MaxSize() )
  {
    uiSubdiv = 1;
  }
  else if( uiLog2TrafoSize == pcCU->getSlice()->getSPS()->getQuadtreeTULog2MinSize() )
  {
    uiSubdiv = 0;
  }
  else if( uiLog2TrafoSize == pcCU->getQuadtreeTULog2MinSizeInCU(uiAbsPartIdx) )
  {
    uiSubdiv = 0;
  }
  else
  {
    assert( uiLog2TrafoSize > pcCU->getQuadtreeTULog2MinSizeInCU(uiAbsPartIdx) );
    m_pcEntropyDecoderIf->parseTransformSubdivFlag( uiSubdiv, uiDepth );
  }
  
  const UInt uiTrDepth = uiDepth - pcCU->getDepth( uiAbsPartIdx );
  
  if( uiLog2TrafoSize <= pcCU->getSlice()->getSPS()->getQuadtreeTULog2MaxSize() )
  {
    const Bool bFirstCbfOfCU = uiLog2TrafoSize == pcCU->getSlice()->getSPS()->getQuadtreeTULog2MaxSize() || uiTrDepth == 0;
    if( bFirstCbfOfCU )
    {
      pcCU->setCbfSubParts( 0, TEXT_CHROMA_U, uiAbsPartIdx, uiDepth );
      pcCU->setCbfSubParts( 0, TEXT_CHROMA_V, uiAbsPartIdx, uiDepth );
    }
    if( bFirstCbfOfCU || uiLog2TrafoSize > 2 )
    {
      if( bFirstCbfOfCU || pcCU->getCbf( uiAbsPartIdx, TEXT_CHROMA_U, uiTrDepth - 1 ) )
      {
        if ( uiInnerQuadIdx == 3 && uiUCbfFront3 == 0 && uiLog2TrafoSize < pcCU->getSlice()->getSPS()->getQuadtreeTULog2MaxSize() )
        {
          uiUCbfFront3++;
          pcCU->setCbfSubParts( 1 << uiTrDepth, TEXT_CHROMA_U, uiAbsPartIdx, uiDepth );
          //printf( " \nsave bits, U Cbf");
        }
        else
        {
          m_pcEntropyDecoderIf->parseQtCbf( pcCU, uiAbsPartIdx, TEXT_CHROMA_U, uiTrDepth, uiDepth );
          uiUCbfFront3 += pcCU->getCbf( uiAbsPartIdx, TEXT_CHROMA_U, uiTrDepth );
        }
      }
      if( bFirstCbfOfCU || pcCU->getCbf( uiAbsPartIdx, TEXT_CHROMA_V, uiTrDepth - 1 ) )
      {
        if ( uiInnerQuadIdx == 3 && uiVCbfFront3 == 0 && uiLog2TrafoSize < pcCU->getSlice()->getSPS()->getQuadtreeTULog2MaxSize() )
        {
          uiVCbfFront3++;
          pcCU->setCbfSubParts( 1 << uiTrDepth, TEXT_CHROMA_V, uiAbsPartIdx, uiDepth );
          //printf( " \nsave bits, V Cbf");
        }
        else
        {
          m_pcEntropyDecoderIf->parseQtCbf( pcCU, uiAbsPartIdx, TEXT_CHROMA_V, uiTrDepth, uiDepth );
          uiVCbfFront3 += pcCU->getCbf( uiAbsPartIdx, TEXT_CHROMA_V, uiTrDepth );
        }
      }
    }
    else
    {
      pcCU->setCbfSubParts( pcCU->getCbf( uiAbsPartIdx, TEXT_CHROMA_U, uiTrDepth - 1 ) << uiTrDepth, TEXT_CHROMA_U, uiAbsPartIdx, uiDepth );
      pcCU->setCbfSubParts( pcCU->getCbf( uiAbsPartIdx, TEXT_CHROMA_V, uiTrDepth - 1 ) << uiTrDepth, TEXT_CHROMA_V, uiAbsPartIdx, uiDepth );
      if ( uiLog2TrafoSize == 2 )
      {
        uiUCbfFront3 += pcCU->getCbf( uiAbsPartIdx, TEXT_CHROMA_U, uiTrDepth );
        uiVCbfFront3 += pcCU->getCbf( uiAbsPartIdx, TEXT_CHROMA_V, uiTrDepth );
      }
    }
  }
  
  if( uiSubdiv )
  {
    UInt size;
    width  >>= 1;
    height >>= 1;
    size = width*height;
    uiTrIdx++;
    ++uiDepth;
    const UInt uiQPartNum = pcCU->getPic()->getNumPartInCU() >> (uiDepth << 1);
    const UInt uiStartAbsPartIdx = uiAbsPartIdx;
    UInt uiLumaTrMode, uiChromaTrMode;
    pcCU->convertTransIdx( uiStartAbsPartIdx, uiTrDepth+1, uiLumaTrMode, uiChromaTrMode );
    UInt uiYCbf = 0;
    UInt uiUCbf = 0;
    UInt uiVCbf = 0;
    
    UInt uiCurrentCbfY = 0;
    UInt uiCurrentCbfU = 0;
    UInt uiCurrentCbfV = 0;
    
    for( Int i = 0; i < 4; i++ )
    {
      UInt nsAddr = 0;
      nsAddr = pcCU->getNSAbsPartIdx( uiLog2TrafoSize-1, uiAbsPartIdx, absTUPartIdx, i, uiTrDepth+1 );
      xDecodeTransform( pcCU, offsetLuma, offsetChroma, uiAbsPartIdx, nsAddr, uiDepth, width, height, uiTrIdx, i, uiCurrentCbfY, uiCurrentCbfU, uiCurrentCbfV, bCodeDQP );
      uiYCbf |= pcCU->getCbf( uiAbsPartIdx, TEXT_LUMA, uiLumaTrMode );
      uiUCbf |= pcCU->getCbf( uiAbsPartIdx, TEXT_CHROMA_U, uiChromaTrMode );
      uiVCbf |= pcCU->getCbf( uiAbsPartIdx, TEXT_CHROMA_V, uiChromaTrMode );
      uiAbsPartIdx += uiQPartNum;
      offsetLuma += size;  offsetChroma += (size>>2);
    }
    
    uiYCbfFront3 += uiCurrentCbfY;
    uiUCbfFront3 += uiCurrentCbfU;
    uiVCbfFront3 += uiCurrentCbfV;
    
    pcCU->convertTransIdx( uiStartAbsPartIdx, uiTrDepth, uiLumaTrMode, uiChromaTrMode );
    for( UInt ui = 0; ui < 4 * uiQPartNum; ++ui )
    {
      pcCU->getCbf( TEXT_LUMA     )[uiStartAbsPartIdx + ui] |= uiYCbf << uiLumaTrMode;
      pcCU->getCbf( TEXT_CHROMA_U )[uiStartAbsPartIdx + ui] |= uiUCbf << uiChromaTrMode;
      pcCU->getCbf( TEXT_CHROMA_V )[uiStartAbsPartIdx + ui] |= uiVCbf << uiChromaTrMode;
    }
  }
  else
  {
    assert( uiDepth >= pcCU->getDepth( uiAbsPartIdx ) );
    pcCU->setTrIdxSubParts( uiTrDepth, uiAbsPartIdx, uiDepth );
    
    {
      DTRACE_CABAC_VL( g_nSymbolCounter++ );
      DTRACE_CABAC_T( "\tTrIdx: abspart=" );
      DTRACE_CABAC_V( uiAbsPartIdx );
      DTRACE_CABAC_T( "\tdepth=" );
      DTRACE_CABAC_V( uiDepth );
      DTRACE_CABAC_T( "\ttrdepth=" );
      DTRACE_CABAC_V( uiTrDepth );
      DTRACE_CABAC_T( "\n" );
    }
    
    UInt uiLumaTrMode, uiChromaTrMode;
    pcCU->convertTransIdx( uiAbsPartIdx, uiTrDepth, uiLumaTrMode, uiChromaTrMode );
    if(pcCU->getPredictionMode( uiAbsPartIdx ) == MODE_INTER && pcCU->useNonSquarePU( uiAbsPartIdx ) )
    {
      pcCU->setNSQTIdxSubParts( uiLog2TrafoSize, uiAbsPartIdx, absTUPartIdx, uiLumaTrMode );
    }
    pcCU->setCbfSubParts ( 0, TEXT_LUMA, uiAbsPartIdx, uiDepth );
    if( pcCU->getPredictionMode(uiAbsPartIdx) != MODE_INTRA && uiDepth == pcCU->getDepth( uiAbsPartIdx ) && !pcCU->getCbf( uiAbsPartIdx, TEXT_CHROMA_U, 0 ) && !pcCU->getCbf( uiAbsPartIdx, TEXT_CHROMA_V, 0 ) )
    {
      pcCU->setCbfSubParts( 1 << uiLumaTrMode, TEXT_LUMA, uiAbsPartIdx, uiDepth );
    }
    else
    {
      const UInt uiLog2CUSize = g_aucConvertToBit[pcCU->getSlice()->getSPS()->getMaxCUWidth()] + 2 - pcCU->getDepth( uiAbsPartIdx );
      if ( pcCU->getPredictionMode( uiAbsPartIdx ) != MODE_INTRA && uiInnerQuadIdx == 3 && uiYCbfFront3 == 0 && uiUCbfFront3 == 0 && uiVCbfFront3 == 0
          && ( uiLog2CUSize <= pcCU->getSlice()->getSPS()->getQuadtreeTULog2MaxSize() + 1 || uiLog2TrafoSize < pcCU->getSlice()->getSPS()->getQuadtreeTULog2MaxSize() ) )
      {
        pcCU->setCbfSubParts( 1 << uiLumaTrMode, TEXT_LUMA, uiAbsPartIdx, uiDepth );
        //printf( " \nsave bits, Y Cbf");
        uiYCbfFront3++;    
      }
      else
      {
        m_pcEntropyDecoderIf->parseQtCbf( pcCU, uiAbsPartIdx, TEXT_LUMA, uiLumaTrMode, uiDepth );
        uiYCbfFront3 += pcCU->getCbf( uiAbsPartIdx, TEXT_LUMA, uiLumaTrMode );
      }
    }
    // transform_unit begin
    UInt cbfY = pcCU->getCbf( uiAbsPartIdx, TEXT_LUMA    , uiTrIdx );
    UInt cbfU = pcCU->getCbf( uiAbsPartIdx, TEXT_CHROMA_U, uiTrIdx );
    UInt cbfV = pcCU->getCbf( uiAbsPartIdx, TEXT_CHROMA_V, uiTrIdx );
    if( uiLog2TrafoSize == 2 )
    {
      UInt partNum = pcCU->getPic()->getNumPartInCU() >> ( ( uiDepth - 1 ) << 1 );
      if( ( uiAbsPartIdx % partNum ) == (partNum - 1) )
      {
        cbfU = pcCU->getCbf( m_uiBakAbsPartIdx, TEXT_CHROMA_U, uiTrIdx );
        cbfV = pcCU->getCbf( m_uiBakAbsPartIdx, TEXT_CHROMA_V, uiTrIdx );
      }
    }
    if ( cbfY || cbfU || cbfV )
    {
      // dQP: only for LCU
      if ( pcCU->getSlice()->getPPS()->getUseDQP() )
      {
        if ( bCodeDQP )
        {
          decodeQP( pcCU, m_bakAbsPartIdxCU);
          bCodeDQP = false;
        }
      }
    }
    if( cbfY )
    {
      Int trWidth = width;
      Int trHeight = height;
      pcCU->getNSQTSize( uiTrIdx, uiAbsPartIdx, trWidth, trHeight );
      m_pcEntropyDecoderIf->parseCoeffNxN( pcCU, (pcCU->getCoeffY()+offsetLuma), uiAbsPartIdx, trWidth, trHeight, uiDepth, TEXT_LUMA );
    }
    if( uiLog2TrafoSize > 2 )
    {
      Int trWidth = width >> 1;
      Int trHeight = height >> 1;
      pcCU->getNSQTSize( uiTrIdx, uiAbsPartIdx, trWidth, trHeight );
      if( cbfU )
      {
        m_pcEntropyDecoderIf->parseCoeffNxN( pcCU, (pcCU->getCoeffCb()+offsetChroma), uiAbsPartIdx, trWidth, trHeight, uiDepth, TEXT_CHROMA_U );
      }
      if( cbfV )
      {
        m_pcEntropyDecoderIf->parseCoeffNxN( pcCU, (pcCU->getCoeffCr()+offsetChroma), uiAbsPartIdx, trWidth, trHeight, uiDepth, TEXT_CHROMA_V );
      }
    }
    else
    {
      UInt partNum = pcCU->getPic()->getNumPartInCU() >> ( ( uiDepth - 1 ) << 1 );
      if( ( uiAbsPartIdx % partNum ) == (partNum - 1) )
      {
        Int trWidth = width;
        Int trHeight = height;
        pcCU->getNSQTSize( uiTrIdx - 1, uiAbsPartIdx, trWidth, trHeight );
        if( cbfU )
        {
          m_pcEntropyDecoderIf->parseCoeffNxN( pcCU, (pcCU->getCoeffCb()+m_uiBakChromaOffset), m_uiBakAbsPartIdx, trWidth, trHeight, uiDepth, TEXT_CHROMA_U );
        }
        if( cbfV )
        {
          m_pcEntropyDecoderIf->parseCoeffNxN( pcCU, (pcCU->getCoeffCr()+m_uiBakChromaOffset), m_uiBakAbsPartIdx, trWidth, trHeight, uiDepth, TEXT_CHROMA_V );
        }
      }
    }
    // transform_unit end
  }
}


Void TDecEntropy::decodeQP          ( TComDataCU* pcCU, UInt uiAbsPartIdx )
{
  if ( pcCU->getSlice()->getPPS()->getUseDQP() )
  {
    m_pcEntropyDecoderIf->parseDeltaQP( pcCU, uiAbsPartIdx, pcCU->getDepth( uiAbsPartIdx ) );
  }
}


/** decode coefficients
 * \param pcCU
 * \param uiAbsPartIdx 
 * \param uiDepth
 * \param uiWidth
 * \param uiHeight 
 * \returns Void
 */
Void TDecEntropy::decodeCoeff( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth, UInt uiWidth, UInt uiHeight, Bool& bCodeDQP )
{
  UInt uiMinCoeffSize = pcCU->getPic()->getMinCUWidth()*pcCU->getPic()->getMinCUHeight();
  UInt uiLumaOffset   = uiMinCoeffSize*uiAbsPartIdx;
  UInt uiChromaOffset = uiLumaOffset>>2;
  UInt temp  = 0;
  UInt temp1 = 0;
  UInt temp2 = 0;
  
#if RWTH_SDC_DLT_B0036
  if( pcCU->getSDCAvailable(uiAbsPartIdx) && pcCU->getSDCFlag( uiAbsPartIdx ) )
  {
    assert( pcCU->getPartitionSize(uiAbsPartIdx) == SIZE_2Nx2N );
    assert( pcCU->getTransformIdx(uiAbsPartIdx) == 0 );
    assert( pcCU->getCbf(uiAbsPartIdx, TEXT_LUMA) == 1 );
    assert( pcCU->getCbf(uiAbsPartIdx, TEXT_CHROMA_U) == 1 );
    assert( pcCU->getCbf(uiAbsPartIdx, TEXT_CHROMA_V) == 1 );
    
    decodeSDCResidualData(pcCU, uiAbsPartIdx, uiDepth);
    return;
  }
#endif
  
  if( pcCU->isIntra(uiAbsPartIdx) )
  {
  }
  else
  {
    UInt uiQtRootCbf = 1;
#if HHI_MPI
    if( !(pcCU->getMergeFlag( uiAbsPartIdx ) && pcCU->getPartitionSize(uiAbsPartIdx) == SIZE_2Nx2N &&
          ( pcCU->getTextureModeDepth( uiAbsPartIdx ) == -1 || uiDepth == pcCU->getTextureModeDepth( uiAbsPartIdx ) ) ) )
#else
    if( !( pcCU->getPartitionSize( uiAbsPartIdx) == SIZE_2Nx2N && pcCU->getMergeFlag( uiAbsPartIdx ) ) )
#endif
    {
      m_pcEntropyDecoderIf->parseQtRootCbf( pcCU, uiAbsPartIdx, uiDepth, uiQtRootCbf );
    }
    if ( !uiQtRootCbf )
    {
      pcCU->setCbfSubParts( 0, 0, 0, uiAbsPartIdx, uiDepth );
      pcCU->setTrIdxSubParts( 0 , uiAbsPartIdx, uiDepth );
      pcCU->setNSQTIdxSubParts( uiAbsPartIdx, uiDepth );
      return;
    }
    
  }

#if FIX_MPI_B0065
  if( pcCU->getPredictionMode(uiAbsPartIdx) == MODE_INTER && pcCU->getMergeFlag( uiAbsPartIdx ) && pcCU->getMergeIndex( uiAbsPartIdx ) == 0 && pcCU->getPartitionSize(uiAbsPartIdx) == SIZE_2Nx2N &&  pcCU->getTextureModeDepth( uiAbsPartIdx ) != -1  )
  {
    TComDataCU *pcTextureCU = pcCU->getSlice()->getTexturePic()->getCU( pcCU->getAddr() );
    if( uiDepth == pcTextureCU->getDepth(uiAbsPartIdx))
    {
      PartSize partSize = pcTextureCU->getPartitionSize(uiAbsPartIdx);
      pcCU->setPartSizeSubParts( partSize, uiAbsPartIdx, uiDepth );
    }
    else
    {
      pcCU->setPartSizeSubParts( SIZE_NxN, uiAbsPartIdx, uiDepth );
    }
  }
#endif

  xDecodeTransform( pcCU, uiLumaOffset, uiChromaOffset, uiAbsPartIdx, uiAbsPartIdx, uiDepth, uiWidth, uiHeight, 0, 0, temp, temp1, temp2, bCodeDQP );

#if FIX_MPI_B0065
  if( pcCU->getPredictionMode(uiAbsPartIdx) == MODE_INTER && pcCU->getMergeFlag( uiAbsPartIdx ) && pcCU->getMergeIndex( uiAbsPartIdx ) == 0 && pcCU->getPartitionSize(uiAbsPartIdx) != SIZE_2Nx2N &&  pcCU->getTextureModeDepth( uiAbsPartIdx ) != -1 )
  {
    pcCU->setPartSizeSubParts( SIZE_2Nx2N, uiAbsPartIdx, uiDepth );  
  }
#endif
}

#if RWTH_SDC_DLT_B0036
Void TDecEntropy::decodeSDCPredMode( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth )
{
  assert( pcCU->getSlice()->getSPS()->isDepth() );
  assert( pcCU->getPartitionSize(uiAbsPartIdx) == SIZE_2Nx2N );
  
  m_pcEntropyDecoderIf->parseSDCPredMode(pcCU, uiAbsPartIdx, uiDepth );
}

Void TDecEntropy::decodeSDCFlag( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth )
{
  assert( pcCU->getSlice()->getSPS()->isDepth() );
  
  m_pcEntropyDecoderIf->parseSDCFlag(pcCU, uiAbsPartIdx, uiDepth );
}

Void TDecEntropy::decodeSDCResidualData( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth )
{
  assert( pcCU->getSlice()->getSPS()->isDepth() );
  assert( pcCU->getSDCFlag(uiAbsPartIdx) );
  
  // number of segments depends on prediction mode for INTRA
  UInt uiNumSegments = 2;
  UInt uiLumaPredMode = pcCU->getLumaIntraDir( uiAbsPartIdx );
  if( pcCU->getPredictionMode(uiAbsPartIdx) == MODE_INTRA && (uiLumaPredMode == DC_IDX || uiLumaPredMode == PLANAR_IDX) )
    uiNumSegments = 1;
  
  // decode residual data for each segment
  for( UInt uiSeg = 0; uiSeg < uiNumSegments; uiSeg++ )
    m_pcEntropyDecoderIf->parseSDCResidualData(pcCU, uiAbsPartIdx, uiDepth, uiSeg);
}
#endif

//! \}