/* 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.
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 * Copyright (c) 2010-2011, 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.
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 *    this list of conditions and the following disclaimer in the documentation
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 *    be used to endorse or promote products derived from this software without
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 */



/** \file     TComPattern.cpp
    \brief    neighbouring pixel access classes
*/

#include "TComPic.h"
#include "TComPattern.h"
#include "TComDataCU.h"

// ====================================================================================================================
// Tables
// ====================================================================================================================

const UChar g_aaucAvailableBlkMask[16][8] =
{
  // 4x4 block neighbor availability      // MB neighbor availability
  {0x0,0x0,0x0,0x0,  0x0,0x8,0x0,0x08  }, // L, A, AL, AR   <== WTF (blkIdx < 8)
  {0x1,0x0,0x0,0x0,  0x1,0x8,0x0,0x08  }, //    A, AL, AR
  {0xA,0xE,0xE,0x6,  0x0,0x8,0x0,0x08  }, // L,    AL, AR
  {0xB,0xE,0xE,0x6,  0x1,0x8,0x0,0x08  }, //       AL, AR
  
  {0x4,0x0,0x0,0x0,  0x0,0x8,0x0,0x08  }, // L, A,     AR
  {0x5,0x0,0x0,0x0,  0x1,0x8,0x0,0x08  }, //    A,     AR
  {0xE,0xE,0xE,0x6,  0x0,0x8,0x0,0x08  }, // L,        AR
  {0xF,0xE,0xE,0x6,  0x1,0x8,0x0,0x08  }, //           AR
  
  {0x0,0x0,0x0,0x8,  0x0,0x8,0x0,0x08  }, // L, A, AL       <== WTF (blkIdx < 8 || blkIdx >= 8)
  {0x1,0x0,0x0,0x8,  0x1,0x8,0x0,0x08  }, //    A, AL
  {0xA,0xE,0xE,0xE,  0x0,0x8,0x0,0x08  }, // L,    AL
  {0xB,0xE,0xE,0xE,  0x1,0x8,0x0,0x08  }, //       AL
  
  {0x4,0x0,0x0,0x8,  0x0,0x8,0x0,0x08  }, // L, A,
  {0x5,0x0,0x0,0x8,  0x1,0x8,0x0,0x08  }, //    A,
  {0xE,0xE,0xE,0xE,  0x0,0x8,0x0,0x08  }, // L,
  {0xF,0xE,0xE,0xE,  0x1,0x8,0x0,0x08  }  //
};

// ====================================================================================================================
// Public member functions (TComPatternParam)
// ====================================================================================================================

/** \param  piTexture     pixel data
 \param  iRoiWidth     pattern width
 \param  iRoiHeight    pattern height
 \param  iStride       buffer stride
 \param  iOffsetLeft   neighbour offset (left)
 \param  iOffsetRight  neighbour offset (right)
 \param  iOffsetAbove  neighbour offset (above)
 \param  iOffsetBottom neighbour offset (bottom)
 */
Void TComPatternParam::setPatternParamPel ( Pel* piTexture,
                                           Int iRoiWidth,
                                           Int iRoiHeight,
                                           Int iStride,
                                           Int iOffsetLeft,
                                           Int iOffsetRight,
                                           Int iOffsetAbove,
                                           Int iOffsetBottom )
{
  m_piPatternOrigin = piTexture;
  m_iROIWidth       = iRoiWidth;
  m_iROIHeight      = iRoiHeight;
  m_iPatternStride  = iStride;
  m_iOffsetLeft     = iOffsetLeft;
  m_iOffsetAbove    = iOffsetAbove;
  m_iOffsetRight    = iOffsetRight;
  m_iOffsetBottom   = iOffsetBottom;
}

/**
 \param  pcCU          CU data structure
 \param  iComp         component index (0=Y, 1=Cb, 2=Cr)
 \param  iRoiWidth     pattern width
 \param  iRoiHeight    pattern height
 \param  iStride       buffer stride
 \param  iOffsetLeft   neighbour offset (left)
 \param  iOffsetRight  neighbour offset (right)
 \param  iOffsetAbove  neighbour offset (above)
 \param  iOffsetBottom neighbour offset (bottom)
 \param  uiPartDepth   CU depth
 \param  uiAbsPartIdx  part index
 */
Void TComPatternParam::setPatternParamCU( TComDataCU* pcCU,
                                         UChar       iComp,
                                         UChar       iRoiWidth,
                                         UChar       iRoiHeight,
                                         Int         iOffsetLeft,
                                         Int         iOffsetRight,
                                         Int         iOffsetAbove,
                                         Int         iOffsetBottom,
                                         UInt        uiPartDepth,
                                         UInt        uiAbsPartIdx
#if DEPTH_MAP_GENERATION
                                        ,Bool        bPrdDepthMap
#endif
                                         )
{
  m_iOffsetLeft   = iOffsetLeft;
  m_iOffsetRight  = iOffsetRight;
  m_iOffsetAbove  = iOffsetAbove;
  m_iOffsetBottom = iOffsetBottom;
  
  m_iROIWidth     = iRoiWidth;
  m_iROIHeight    = iRoiHeight;
  
  UInt uiAbsZorderIdx = pcCU->getZorderIdxInCU() + uiAbsPartIdx;
  
#if DEPTH_MAP_GENERATION
  TComPicYuv* pcPic = ( bPrdDepthMap ? pcCU->getPic()->getPredDepthMap() : pcCU->getPic()->getPicYuvRec() );
#else
  TComPicYuv* pcPic = pcCU->getPic()->getPicYuvRec();
#endif
  if ( iComp == 0 )
  {
#if DEPTH_MAP_GENERATION
    m_iPatternStride  = ( bPrdDepthMap ? pcCU->getPic()->getPredDepthMap()->getStride() : pcCU->getPic()->getStride() );
#else
    m_iPatternStride  = pcCU->getPic()->getStride();
#endif
    m_piPatternOrigin = pcPic->getLumaAddr(pcCU->getAddr(), uiAbsZorderIdx) - m_iOffsetAbove * m_iPatternStride - m_iOffsetLeft;
  }
  else
  {
#if DEPTH_MAP_GENERATION
    m_iPatternStride  = ( bPrdDepthMap ? pcCU->getPic()->getPredDepthMap()->getCStride() : pcCU->getPic()->getCStride() );
#else
    m_iPatternStride = pcCU->getPic()->getCStride();
#endif
    if ( iComp == 1 )
      m_piPatternOrigin = pcPic->getCbAddr(pcCU->getAddr(), uiAbsZorderIdx) - m_iOffsetAbove * m_iPatternStride - m_iOffsetLeft;
    else
      m_piPatternOrigin = pcPic->getCrAddr(pcCU->getAddr(), uiAbsZorderIdx) - m_iOffsetAbove * m_iPatternStride - m_iOffsetLeft;
  }
}

// ====================================================================================================================
// Public member functions (TComPattern)
// ====================================================================================================================

Void TComPattern::initPattern ( Pel* piY,
                               Pel* piCb,
                               Pel* piCr,
                               Int iRoiWidth,
                               Int iRoiHeight,
                               Int iStride,
                               Int iOffsetLeft,
                               Int iOffsetRight,
                               Int iOffsetAbove,
                               Int iOffsetBottom )
{
  m_cPatternY. setPatternParamPel( piY,  iRoiWidth,      iRoiHeight,      iStride,      iOffsetLeft,      iOffsetRight,      iOffsetAbove,      iOffsetBottom );
  m_cPatternCb.setPatternParamPel( piCb, iRoiWidth >> 1, iRoiHeight >> 1, iStride >> 1, iOffsetLeft >> 1, iOffsetRight >> 1, iOffsetAbove >> 1, iOffsetBottom >> 1 );
  m_cPatternCr.setPatternParamPel( piCr, iRoiWidth >> 1, iRoiHeight >> 1, iStride >> 1, iOffsetLeft >> 1, iOffsetRight >> 1, iOffsetAbove >> 1, iOffsetBottom >> 1 );
  
  return;
}

Void TComPattern::initPattern( TComDataCU* pcCU, UInt uiPartDepth, UInt uiAbsPartIdx
#if DEPTH_MAP_GENERATION
                             , Bool bPrdDepthMap 
#endif
                             )
{
  Int   uiOffsetLeft  = 0;
  Int   uiOffsetRight = 0;
  Int   uiOffsetAbove = 0;
  
  TComPic* pcPic         = pcCU->getPic();
  UChar uiWidth          = pcCU->getWidth (0)>>uiPartDepth;
  UChar uiHeight         = pcCU->getHeight(0)>>uiPartDepth;
  
  UInt  uiAbsZorderIdx   = pcCU->getZorderIdxInCU() + uiAbsPartIdx;
  UInt  uiCurrPicPelX    = pcCU->getCUPelX() + g_auiRasterToPelX[ g_auiZscanToRaster[uiAbsZorderIdx] ];
  UInt  uiCurrPicPelY    = pcCU->getCUPelY() + g_auiRasterToPelY[ g_auiZscanToRaster[uiAbsZorderIdx] ];
  
  if( uiCurrPicPelX != 0 )
    uiOffsetLeft = 1;
  if( uiCurrPicPelY != 0 )
  {
    UInt uiNumPartInWidth = ( uiWidth/pcPic->getMinCUWidth() );
    uiOffsetAbove = 1;
    
    if( uiCurrPicPelX + uiWidth < pcCU->getSlice()->getSPS()->getWidth() )
    {
      if( ( g_auiZscanToRaster[uiAbsZorderIdx] + uiNumPartInWidth ) % pcPic->getNumPartInWidth() ) // Not CU boundary
      {
        if( g_auiRasterToZscan[ (Int)g_auiZscanToRaster[uiAbsZorderIdx] - (Int)pcPic->getNumPartInWidth() + (Int)uiNumPartInWidth ] < uiAbsZorderIdx )
          uiOffsetRight = 1;
      }
      else // if it is CU boundary
      {
        if( g_auiZscanToRaster[uiAbsZorderIdx] < pcPic->getNumPartInWidth() && (uiCurrPicPelX+uiWidth) < pcPic->getPicYuvRec()->getWidth() ) // first line
        {
          uiOffsetRight = 1;
        }
      }
    }
  }
  
#if LM_CHROMA 
  m_bLeftAvailable = uiCurrPicPelX > 0 ? true : false;
  m_bAboveAvailable = uiCurrPicPelY > 0 ? true : false;
#endif

#if DEPTH_MAP_GENERATION
  m_cPatternY .setPatternParamCU( pcCU, 0, uiWidth,      uiHeight,      uiOffsetLeft, uiOffsetRight, uiOffsetAbove, 0, uiPartDepth, uiAbsPartIdx, bPrdDepthMap );
  m_cPatternCb.setPatternParamCU( pcCU, 1, uiWidth >> 1, uiHeight >> 1, uiOffsetLeft, uiOffsetRight, uiOffsetAbove, 0, uiPartDepth, uiAbsPartIdx, bPrdDepthMap );
  m_cPatternCr.setPatternParamCU( pcCU, 2, uiWidth >> 1, uiHeight >> 1, uiOffsetLeft, uiOffsetRight, uiOffsetAbove, 0, uiPartDepth, uiAbsPartIdx, bPrdDepthMap );
#else
  m_cPatternY .setPatternParamCU( pcCU, 0, uiWidth,      uiHeight,      uiOffsetLeft, uiOffsetRight, uiOffsetAbove, 0, uiPartDepth, uiAbsPartIdx );
  m_cPatternCb.setPatternParamCU( pcCU, 1, uiWidth >> 1, uiHeight >> 1, uiOffsetLeft, uiOffsetRight, uiOffsetAbove, 0, uiPartDepth, uiAbsPartIdx );
  m_cPatternCr.setPatternParamCU( pcCU, 2, uiWidth >> 1, uiHeight >> 1, uiOffsetLeft, uiOffsetRight, uiOffsetAbove, 0, uiPartDepth, uiAbsPartIdx );
#endif
}

Void TComPattern::initAdiPattern( TComDataCU* pcCU, UInt uiZorderIdxInPart, UInt uiPartDepth, Int* piAdiBuf, Int iOrgBufStride, Int iOrgBufHeight, Bool& bAbove, Bool& bLeft
#if DEPTH_MAP_GENERATION
                                , Bool bPrdDepthMap, UInt uiSubSampExpX, UInt uiSubSampExpY
#endif
                                )
{
  Pel*  piRoiOrigin;
  Int*  piAdiTemp;
  UInt  uiCuWidth   = pcCU->getWidth(0) >> uiPartDepth;
  UInt  uiCuHeight  = pcCU->getHeight(0)>> uiPartDepth;
  UInt  uiCuWidth2  = uiCuWidth<<1;
  UInt  uiCuHeight2 = uiCuHeight<<1;
  UInt  uiWidth;
  UInt  uiHeight;

#if DEPTH_MAP_GENERATION
  Int   iPicStride = ( bPrdDepthMap ? pcCU->getPic()->getPredDepthMap()->getStride() : pcCU->getPic()->getStride() );
#else
  Int   iPicStride = pcCU->getPic()->getStride();
#endif

  Int   iCuAddr;
#if REFERENCE_SAMPLE_PADDING
  Int   iUnitSize = 0;
  Int   iNumUnitsInCu = 0;
  Int   iTotalUnits = 0;
  Bool* bNeighborFlags;
  Int   iNumIntraNeighbor = 0;
#else  // REFERENCE_SAMPLE_PADDING
  Pel*  piRoiTemp;
  Bool  bAboveFlag      = false;
  Bool  bAboveRightFlag = false;
  Bool  bLeftFlag       = false;
  Bool  bBelowLeftFlag  = false;
  Bool  bAboveLeftFlag  = false;
#endif // REFERENCE_SAMPLE_PADDING
  
  iCuAddr = pcCU->getAddr();
  
  UInt uiPartIdxLT, uiPartIdxRT, uiPartIdxLB, uiPartDum;
  
  pcCU->deriveLeftRightTopIdxAdi( uiPartIdxLT, uiPartIdxRT, uiZorderIdxInPart, uiPartDepth );
  pcCU->deriveLeftBottomIdxAdi  ( uiPartIdxLB,              uiZorderIdxInPart, uiPartDepth );
  
#if CONSTRAINED_INTRA_PRED
  if ( pcCU->getSlice()->getPPS()->getConstrainedIntraPred() )
  {
#if REFERENCE_SAMPLE_PADDING
    iUnitSize      = g_uiMaxCUWidth >> g_uiMaxCUDepth;
    iNumUnitsInCu  = uiCuWidth / iUnitSize;
    iTotalUnits    = (iNumUnitsInCu << 2) + 1;
    bNeighborFlags = new Bool[iTotalUnits];

    bNeighborFlags[iNumUnitsInCu*2] = isAboveLeftAvailableForCIP( pcCU, uiPartIdxLT );
    iNumIntraNeighbor  += (Int)(bNeighborFlags[iNumUnitsInCu*2]);
    iNumIntraNeighbor  += isAboveAvailableForCIP     ( pcCU, uiPartIdxLT, uiPartIdxRT, bNeighborFlags+(iNumUnitsInCu*2)+1 );
    iNumIntraNeighbor  += isAboveRightAvailableForCIP( pcCU, uiPartIdxLT, uiPartIdxRT, bNeighborFlags+(iNumUnitsInCu*3)+1 );
    iNumIntraNeighbor  += isLeftAvailableForCIP      ( pcCU, uiPartIdxLT, uiPartIdxLB, bNeighborFlags+(iNumUnitsInCu*2)-1 );
    iNumIntraNeighbor  += isBelowLeftAvailableForCIP ( pcCU, uiPartIdxLT, uiPartIdxLB, bNeighborFlags+ iNumUnitsInCu   -1 );
#else // REFERENCE_SAMPLE_PADDING
    bAboveFlag      = isAboveAvailableForCIP     ( pcCU, uiPartIdxLT, uiPartIdxRT );
    bAboveRightFlag = isAboveRightAvailableForCIP( pcCU, uiPartIdxLT, uiPartIdxRT );
    bLeftFlag       = isLeftAvailableForCIP      ( pcCU, uiPartIdxLT, uiPartIdxLB );
    bBelowLeftFlag  = isBelowLeftAvailableForCIP ( pcCU, uiPartIdxLT, uiPartIdxLB );
    bAboveLeftFlag  = isAboveLeftAvailableForCIP ( pcCU, uiPartIdxLT );
#endif // REFERENCE_SAMPLE_PADDING
  }
  else
  {
#if REFERENCE_SAMPLE_PADDING
    iUnitSize     = uiCuWidth;
    iNumUnitsInCu = 1;
    iTotalUnits   = 5;
    bNeighborFlags = new Bool[iTotalUnits];

    ::memset(bNeighborFlags, false, sizeof(Bool)*iTotalUnits);
    if( pcCU->getPUAbove        ( uiPartDum,             uiPartIdxLT,    true, false ) ) { bNeighborFlags[3] = true; iNumIntraNeighbor++; }
    if( pcCU->getPUAboveRightAdi( uiPartDum, uiCuWidth,  uiPartIdxRT, 1, true, false ) ) { bNeighborFlags[4] = true; iNumIntraNeighbor++; }
    if( pcCU->getPULeft         ( uiPartDum,             uiPartIdxLT,    true, false ) ) { bNeighborFlags[1] = true; iNumIntraNeighbor++; }
    if( pcCU->getPUBelowLeftAdi ( uiPartDum, uiCuHeight, uiPartIdxLB, 1, true, false ) ) { bNeighborFlags[0] = true; iNumIntraNeighbor++; }
    if( pcCU->getPUAboveLeft    ( uiPartDum,             uiPartIdxLT,    true, false ) ) { bNeighborFlags[2] = true; iNumIntraNeighbor++; }
#if MN_DC_PRED_FILTER
    m_bAboveFlagForDCFilt = bNeighborFlags[3];
    m_bLeftFlagForDCFilt  = bNeighborFlags[1];
#endif
#else // REFERENCE_SAMPLE_PADDING
    if( pcCU->getPUAbove        ( uiPartDum,             uiPartIdxLT,    true, false ) ) bAboveFlag      = true;
    if( pcCU->getPUAboveRightAdi( uiPartDum, uiCuWidth,  uiPartIdxRT, 1, true, false ) ) bAboveRightFlag = true;
    if( pcCU->getPULeft         ( uiPartDum,             uiPartIdxLT,    true, false ) ) bLeftFlag       = true;
    if( pcCU->getPUBelowLeftAdi ( uiPartDum, uiCuHeight, uiPartIdxLB, 1, true, false ) ) bBelowLeftFlag  = true;
    if( pcCU->getPUAboveLeft    ( uiPartDum,             uiPartIdxLT,    true, false ) ) bAboveLeftFlag  = true;
#if MN_DC_PRED_FILTER
    m_bAboveFlagForDCFilt = bAboveFlag;
    m_bLeftFlagForDCFilt  = bLeftFlag;
#endif
#endif // REFERENCE_SAMPLE_PADDING
  }
#else //CONSTRAINED_INTRA_PRED
#if REFERENCE_SAMPLE_PADDING
  iUnitSize     = uiCuWidth;
  iNumUnitsInCu = 1;
  iTotalUnits   = 5;
  bNeighborFlags = new Bool[iTotalUnits];

  ::memset(bNeighborFlags, false, sizeof(Bool)*iTotalUnits);
  if( pcCU->getPUAbove        ( uiPartDum,             uiPartIdxLT, true, false ) ) { bNeighborFlags[3] = true; iNumIntraNeighbor++; }
  if( pcCU->getPUAboveRightAdi( uiPartDum, uiCuWidth,  uiPartIdxRT, true, false ) ) { bNeighborFlags[4] = true; iNumIntraNeighbor++; }
  if( pcCU->getPULeft         ( uiPartDum,             uiPartIdxLT, true, false ) ) { bNeighborFlags[1] = true; iNumIntraNeighbor++; }
  if( pcCU->getPUBelowLeftAdi ( uiPartDum, uiCuHeight, uiPartIdxLB, true, false ) ) { bNeighborFlags[0] = true; iNumIntraNeighbor++; }
  if( pcCU->getPUAboveLeft    ( uiPartDum,             uiPartIdxLT, true, false ) ) { bNeighborFlags[2] = true; iNumIntraNeighbor++; }
#if MN_DC_PRED_FILTER
  m_bAboveFlagForDCFilt = bNeighborFlags[3];
  m_bLeftFlagForDCFilt  = bNeighborFlags[1];
#endif
#else // REFERENCE_SAMPLE_PADDING
  if( pcCU->getPUAbove        ( uiPartDum,             uiPartIdxLT, true, false ) ) bAboveFlag      = true;
  if( pcCU->getPUAboveRightAdi( uiPartDum, uiCuWidth,  uiPartIdxRT, true, false ) ) bAboveRightFlag = true;
  if( pcCU->getPULeft         ( uiPartDum,             uiPartIdxLT, true, false ) ) bLeftFlag       = true;
  if( pcCU->getPUBelowLeftAdi ( uiPartDum, uiCuHeight, uiPartIdxLB, true, false ) ) bBelowLeftFlag  = true;
  if( pcCU->getPUAboveLeft    ( uiPartDum,             uiPartIdxLT, true, false ) ) bAboveLeftFlag  = true;
#if MN_DC_PRED_FILTER
  m_bAboveFlagForDCFilt = bAboveFlag;
  m_bLeftFlagForDCFilt  = bLeftFlag;
#endif
#endif // REFERENCE_SAMPLE_PADDING
#endif //CONSTRAINED_INTRA_PRED

#if MN_DC_PRED_FILTER
  m_bDCPredFilterFlag = (m_bAboveFlagForDCFilt && m_bLeftFlagForDCFilt) ? true : false;
#endif
  
#if REFERENCE_SAMPLE_PADDING
  bAbove = true;
  bLeft  = true;
#else // REFERENCE_SAMPLE_PADDING
  bAbove = bAboveFlag;
  bLeft  = bLeftFlag;

  Int iDCValue = ( 1<<( g_uiBitDepth + g_uiBitIncrement - 1) );
#endif // REFERENCE_SAMPLE_PADDING
  
#if DEPTH_MAP_GENERATION
  if ( bPrdDepthMap )
  {
    uiWidth  = ( uiCuWidth2  >> uiSubSampExpX ) + 1;
    uiHeight = ( uiCuHeight2 >> uiSubSampExpY ) + 1;
  }
  else
  {
  uiWidth=uiCuWidth2+1;
  uiHeight=uiCuHeight2+1;
  }
#else
  uiWidth=uiCuWidth2+1;
  uiHeight=uiCuHeight2+1;
#endif
  
  if (((uiWidth<<2)>iOrgBufStride)||((uiHeight<<2)>iOrgBufHeight))
    return;
  
  piRoiOrigin = pcCU->getPic()->getPicYuvRec()->getLumaAddr(pcCU->getAddr(), pcCU->getZorderIdxInCU()+uiZorderIdxInPart);
  piAdiTemp   = piAdiBuf;

#if DEPTH_MAP_GENERATION
  if( bPrdDepthMap )
  {
    piRoiOrigin = pcCU->getPic()->getPredDepthMap()->getLumaAddr( pcCU->getAddr(), pcCU->getZorderIdxInCU() + uiZorderIdxInPart );
#if REFERENCE_SAMPLE_PADDING
#else
    iDCValue    = PDM_UNDEFINED_DEPTH;
#endif
  }
#endif


#if REFERENCE_SAMPLE_PADDING
#if DEPTH_MAP_GENERATION
  if ( bPrdDepthMap )
    fillReferenceSamples ( pcCU, piRoiOrigin, piAdiTemp, bNeighborFlags, iNumIntraNeighbor, iUnitSize >> uiSubSampExpX, iNumUnitsInCu, iTotalUnits, uiCuWidth >> uiSubSampExpX, uiCuHeight >> uiSubSampExpY, uiWidth, uiHeight, iPicStride, bPrdDepthMap );
  else
  fillReferenceSamples ( pcCU, piRoiOrigin, piAdiTemp, bNeighborFlags, iNumIntraNeighbor, iUnitSize, iNumUnitsInCu, iTotalUnits, uiCuWidth, uiCuHeight, uiWidth, uiHeight, iPicStride, bPrdDepthMap );
#else
  fillReferenceSamples ( pcCU, piRoiOrigin, piAdiTemp, bNeighborFlags, iNumIntraNeighbor, iUnitSize, iNumUnitsInCu, iTotalUnits, uiCuWidth, uiCuHeight, uiWidth, uiHeight, iPicStride );
#endif
  delete [] bNeighborFlags;
  bNeighborFlags = NULL;
#else // REFERENCE_SAMPLE_PADDING
  //BB: fill border with DC value - needed if( bAboveFlag=false || bLeftFlag=false )
  for (i=0;i<uiWidth;i++)
    piAdiTemp[i]=iDCValue;
  for (i=0;i<uiHeight;i++) //BB: can start from 1?
    piAdiTemp[i*uiWidth]=iDCValue;
  
  piRoiTemp=piRoiOrigin; //BB: not needed?
  
  if (bAboveFlag)
  {
    // BB: fill top border with rec. samples
    piRoiTemp=piRoiOrigin-iPicStride;
    for (i=0;i<uiCuWidth;i++)
      piAdiTemp[1+i]=piRoiTemp[i];
    // BB: fill top right border with rec. samples
    if (bAboveRightFlag)
    {
      piRoiTemp=piRoiOrigin-iPicStride+uiCuWidth;
      for (i=0;i<uiCuWidth;i++)
        piAdiTemp[1+uiCuWidth+i]=piRoiTemp[i];
    }
    // BB: fill top right border with last sample from top
    else
    {
      for (i=0;i<uiCuWidth;i++)
        piAdiTemp[1+uiCuWidth+i]=piAdiTemp[uiCuWidth];
    }
  }
  
  if (bAboveLeftFlag)
  {
    piRoiTemp=piRoiOrigin-iPicStride-1;
    piAdiTemp[0]=piRoiTemp[0];
  }

  if (bLeftFlag)
  {
    // BB: fill left border with rec. samples
    piRoiTemp=piRoiOrigin-1;
    for (i=0;i<uiCuHeight;i++)
    {
      piAdiTemp[(1+i)*uiWidth]=piRoiTemp[0];
      piRoiTemp+=iPicStride;
    }
    // BB: fill below left border with rec. samples
    if (bBelowLeftFlag)
    {
      for (i=0;i<uiCuHeight;i++)
      {
        piAdiTemp[(1+uiCuHeight+i)*uiWidth]=piRoiTemp[0];
        piRoiTemp+=iPicStride;
      }
    }
    // BB: fill below left border with last sample from left
    else
    {
      for (i=0;i<uiCuHeight;i++)
        piAdiTemp[(1+uiCuHeight+i)*uiWidth]=piAdiTemp[(uiCuHeight)*uiWidth];
    }
  }
#endif // REFERENCE_SAMPLE_PADDING
  
#if QC_MDIS
  // generate filtered intra prediction samples
  Int iBufSize = uiCuHeight2 + uiCuWidth2 + 1;  // left and left above border + above and above right border + top left corner = length of 3. filter buffer
  Int   i;

  UInt uiWH = uiWidth * uiHeight;               // number of elements in one buffer

  Int* piFilteredBuf1 = piAdiBuf + uiWH;        // 1. filter buffer
  Int* piFilteredBuf2 = piFilteredBuf1 + uiWH;  // 2. filter buffer
  Int* piFilterBuf = piFilteredBuf2 + uiWH;     // buffer for 2. filtering (sequential)
  Int* piFilterBufN = piFilterBuf + iBufSize;   // buffer for 1. filtering (sequential)

  Int l = 0;
  // left border from bottom to top
  for (i = 0; i < uiCuHeight2; i++)
    piFilterBuf[l++] = piAdiTemp[uiWidth * (uiCuHeight2 - i)];
  // top left corner
  piFilterBuf[l++] = piAdiTemp[0];
  // above border from left to right
  for (i=0; i < uiCuWidth2; i++)
    piFilterBuf[l++] = piAdiTemp[1 + i];

  // 1. filtering with [1 2 1]
  piFilterBufN[0] = piFilterBuf[0];
  piFilterBufN[iBufSize - 1] = piFilterBuf[iBufSize - 1];
  for (i = 1; i < iBufSize - 1; i++)
    piFilterBufN[i] = (piFilterBuf[i - 1] + 2 * piFilterBuf[i]+piFilterBuf[i + 1] + 2) >> 2;

  // fill 1. filter buffer with filtered values
  l=0;
  for (i = 0; i < uiCuHeight2; i++)
    piFilteredBuf1[uiWidth * (uiCuHeight2 - i)] = piFilterBufN[l++];
  piFilteredBuf1[0] = piFilterBufN[l++];
  for (i = 0; i < uiCuWidth2; i++)
    piFilteredBuf1[1 + i] = piFilterBufN[l++];

#if !MN_MDIS_SIMPLIFICATION
  // 2. filtering with [1 2 1]
  piFilterBuf[0] = piFilterBufN[0];                   
  piFilterBuf[iBufSize - 1] = piFilterBufN[iBufSize - 1];
  for (i = 1; i < iBufSize - 1; i++)
    piFilterBuf[i] = (piFilterBufN[i - 1] + 2 * piFilterBufN[i] + piFilterBufN[i + 1] + 2) >> 2;

  // fill 2. filter buffer with filtered values
  l=0;
  for (i = 0; i < uiCuHeight2; i++)
    piFilteredBuf2[uiWidth * (uiCuHeight2 - i)] = piFilterBuf[l++];
  piFilteredBuf2[0] = piFilterBuf[l++];
  for (i = 0; i < uiCuWidth2; i++)
    piFilteredBuf2[1 + i] = piFilterBuf[l++];
#endif
#endif //QC_MDIS
  
}

Void TComPattern::initAdiPatternChroma( TComDataCU* pcCU, UInt uiZorderIdxInPart, UInt uiPartDepth, Int* piAdiBuf, Int iOrgBufStride, Int iOrgBufHeight, Bool& bAbove, Bool& bLeft )
{
  Pel*  piRoiOrigin;
  Int*  piAdiTemp;
  UInt  uiCuWidth  = pcCU->getWidth (0) >> uiPartDepth;
  UInt  uiCuHeight = pcCU->getHeight(0) >> uiPartDepth;
  UInt  uiWidth;
  UInt  uiHeight;
  Int   iPicStride = pcCU->getPic()->getCStride();
  Int   iCuAddr;
#if REFERENCE_SAMPLE_PADDING
  Int   iUnitSize = 0;
  Int   iNumUnitsInCu = 0;
  Int   iTotalUnits = 0;
  Bool* bNeighborFlags;
  Int   iNumIntraNeighbor = 0;
#else // REFERENCE_SAMPLE_PADDING
  Pel*  piRoiTemp;
  Int   i;
  Bool  bAboveFlag=false;
  Bool  bAboveRightFlag=false;
  Bool  bLeftFlag=false;
  Bool  bBelowLeftFlag=false;
  Bool  bAboveLeftFlag    = false;
#endif // REFERENCE_SAMPLE_PADDING
  
  iCuAddr = pcCU->getAddr();
  
  UInt uiPartIdxLT, uiPartIdxRT, uiPartIdxLB,uiPartDum;
  
  pcCU->deriveLeftRightTopIdxAdi( uiPartIdxLT, uiPartIdxRT, uiZorderIdxInPart, uiPartDepth );
  pcCU->deriveLeftBottomIdxAdi  ( uiPartIdxLB,              uiZorderIdxInPart, uiPartDepth );
  
#if CONSTRAINED_INTRA_PRED
  if ( pcCU->getSlice()->getPPS()->getConstrainedIntraPred() )
  {
#if REFERENCE_SAMPLE_PADDING
    iUnitSize      = (g_uiMaxCUWidth >> g_uiMaxCUDepth) >> 1; // for chroma
    iNumUnitsInCu  = (uiCuWidth / iUnitSize) >> 1;            // for chroma
    iTotalUnits    = (iNumUnitsInCu << 2) + 1;
    bNeighborFlags = new Bool[iTotalUnits];

    bNeighborFlags[iNumUnitsInCu*2] = isAboveLeftAvailableForCIP( pcCU, uiPartIdxLT );
    iNumIntraNeighbor  += (Int)(bNeighborFlags[iNumUnitsInCu*2]);
    iNumIntraNeighbor  += isAboveAvailableForCIP     ( pcCU, uiPartIdxLT, uiPartIdxRT, bNeighborFlags+(iNumUnitsInCu*2)+1 );
    iNumIntraNeighbor  += isAboveRightAvailableForCIP( pcCU, uiPartIdxLT, uiPartIdxRT, bNeighborFlags+(iNumUnitsInCu*3)+1 );
    iNumIntraNeighbor  += isLeftAvailableForCIP      ( pcCU, uiPartIdxLT, uiPartIdxLB, bNeighborFlags+(iNumUnitsInCu*2)-1 );
    iNumIntraNeighbor  += isBelowLeftAvailableForCIP ( pcCU, uiPartIdxLT, uiPartIdxLB, bNeighborFlags+ iNumUnitsInCu   -1 );
#else // REFERENCE_SAMPLE_PADDING
    bAboveFlag      = isAboveAvailableForCIP     ( pcCU, uiPartIdxLT, uiPartIdxRT );
    bAboveRightFlag = isAboveRightAvailableForCIP( pcCU, uiPartIdxLT, uiPartIdxRT );
    bLeftFlag       = isLeftAvailableForCIP      ( pcCU, uiPartIdxLT, uiPartIdxLB );
    bBelowLeftFlag  = isBelowLeftAvailableForCIP ( pcCU, uiPartIdxLT, uiPartIdxLB );
    bAboveLeftFlag  = isAboveLeftAvailableForCIP ( pcCU, uiPartIdxLT );
#endif // REFERENCE_SAMPLE_PADDING
  }
  else
  {
#if REFERENCE_SAMPLE_PADDING
    iUnitSize     = uiCuWidth >> 1;
    iNumUnitsInCu = 1;
    iTotalUnits   = 5;
    bNeighborFlags = new Bool[iTotalUnits];

    ::memset(bNeighborFlags, false, sizeof(Bool)*iTotalUnits);
    if( pcCU->getPUAbove        ( uiPartDum,             uiPartIdxLT,    true, false ) ) { bNeighborFlags[3] = true; iNumIntraNeighbor++; }
    if( pcCU->getPUAboveRightAdi( uiPartDum, uiCuWidth,  uiPartIdxRT, 1, true, false ) ) { bNeighborFlags[4] = true; iNumIntraNeighbor++; }
    if( pcCU->getPULeft         ( uiPartDum,             uiPartIdxLT,    true, false ) ) { bNeighborFlags[1] = true; iNumIntraNeighbor++; }
    if( pcCU->getPUBelowLeftAdi ( uiPartDum, uiCuHeight, uiPartIdxLB, 1, true, false ) ) { bNeighborFlags[0] = true; iNumIntraNeighbor++; }
    if( pcCU->getPUAboveLeft    ( uiPartDum,             uiPartIdxLT,    true, false ) ) { bNeighborFlags[2] = true; iNumIntraNeighbor++; }
#else // REFERENCE_SAMPLE_PADDING
    if( pcCU->getPUAbove        ( uiPartDum,             uiPartIdxLT,    true, false ) ) bAboveFlag      = true;
    if( pcCU->getPUAboveRightAdi( uiPartDum, uiCuWidth,  uiPartIdxRT, 1, true, false ) ) bAboveRightFlag = true;
    if( pcCU->getPULeft         ( uiPartDum,             uiPartIdxLT,    true, false ) ) bLeftFlag       = true;
    if( pcCU->getPUBelowLeftAdi ( uiPartDum, uiCuHeight, uiPartIdxLB, 1, true, false ) ) bBelowLeftFlag  = true;
    if( pcCU->getPUAboveLeft    ( uiPartDum,             uiPartIdxLT,    true, false ) ) bAboveLeftFlag  = true;
#endif // REFERENCE_SAMPLE_PADDING
  }
#else //CONSTRAINED_INTRA_PRED
#if REFERENCE_SAMPLE_PADDING
  iUnitSize     = uiCuWidth >> 1;
  iNumUnitsInCu = 1;
  iTotalUnits   = 5;
  bNeighborFlags = new Bool[iTotalUnits];

  ::memset(bNeighborFlags, false, sizeof(Bool)*iTotalUnits);
  if( pcCU->getPUAbove        ( uiPartDum,             uiPartIdxLT, true, false ) ) { bNeighborFlags[3] = true; iNumIntraNeighbor++; }
  if( pcCU->getPUAboveRightAdi( uiPartDum, uiCuWidth,  uiPartIdxRT, true, false ) ) { bNeighborFlags[4] = true; iNumIntraNeighbor++; }
  if( pcCU->getPULeft         ( uiPartDum,             uiPartIdxLT, true, false ) ) { bNeighborFlags[1] = true; iNumIntraNeighbor++; }
  if( pcCU->getPUBelowLeftAdi ( uiPartDum, uiCuHeight, uiPartIdxLB, true, false ) ) { bNeighborFlags[0] = true; iNumIntraNeighbor++; }
  if( pcCU->getPUAboveLeft    ( uiPartDum,             uiPartIdxLT, true, false ) ) { bNeighborFlags[2] = true; iNumIntraNeighbor++; }
#else // REFERENCE_SAMPLE_PADDING
  if( pcCU->getPUAbove        ( uiPartDum,             uiPartIdxLT, true, false ) ) bAboveFlag      = true;
  if( pcCU->getPUAboveRightAdi( uiPartDum, uiCuWidth,  uiPartIdxRT, true, false ) ) bAboveRightFlag = true;
  if( pcCU->getPULeft         ( uiPartDum,             uiPartIdxLT, true, false ) ) bLeftFlag       = true;
  if( pcCU->getPUBelowLeftAdi ( uiPartDum, uiCuHeight, uiPartIdxLB, true, false ) ) bBelowLeftFlag  = true;
  if( pcCU->getPUAboveLeft    ( uiPartDum,             uiPartIdxLT, true, false ) ) bAboveLeftFlag  = true;
#endif // REFERENCE_SAMPLE_PADDING
#endif //CONSTRAINED_INTRA_PRED
  
#if REFERENCE_SAMPLE_PADDING
  bAbove = true;
  bLeft  = true;
#else // REFERENCE_SAMPLE_PADDING
  bAbove = bAboveFlag;
  bLeft  = bLeftFlag;

  Int iDCValue = ( 1<<( g_uiBitDepth + g_uiBitIncrement - 1) );
#endif // REFERENCE_SAMPLE_PADDING
  
  uiCuWidth=uiCuWidth>>1;  // for chroma
  uiCuHeight=uiCuHeight>>1;  // for chroma
  
  uiWidth=uiCuWidth*2+1;
  uiHeight=uiCuHeight*2+1;
  
  if ((4*uiWidth>iOrgBufStride)||(4*uiHeight>iOrgBufHeight))
    return;
  
  // get Cb pattern
  piRoiOrigin = pcCU->getPic()->getPicYuvRec()->getCbAddr(pcCU->getAddr(), pcCU->getZorderIdxInCU()+uiZorderIdxInPart);
  piAdiTemp   = piAdiBuf;

#if REFERENCE_SAMPLE_PADDING
#if DEPTH_MAP_GENERATION
  fillReferenceSamples ( pcCU, piRoiOrigin, piAdiTemp, bNeighborFlags, iNumIntraNeighbor, iUnitSize, iNumUnitsInCu, iTotalUnits, uiCuWidth, uiCuHeight, uiWidth, uiHeight, iPicStride, false );
#else
  fillReferenceSamples ( pcCU, piRoiOrigin, piAdiTemp, bNeighborFlags, iNumIntraNeighbor, iUnitSize, iNumUnitsInCu, iTotalUnits, uiCuWidth, uiCuHeight, uiWidth, uiHeight, iPicStride );
#endif
#else // REFERENCE_SAMPLE_PADDING
  for (i=0;i<uiWidth;i++)
    piAdiTemp[i]=iDCValue;
  for (i=0;i<uiHeight;i++)
    piAdiTemp[i*uiWidth]=iDCValue;
  
  piRoiTemp=piRoiOrigin;
  
  if (bAboveFlag)
  {
    piRoiTemp=piRoiOrigin-iPicStride;
    for (i=0;i<uiCuWidth;i++)
      piAdiTemp[1+i]=piRoiTemp[i];
    if (bAboveRightFlag)
    {
      piRoiTemp=piRoiOrigin-iPicStride+uiCuWidth;
      for (i=0;i<uiCuWidth;i++)
        piAdiTemp[1+uiCuWidth+i]=piRoiTemp[i];
    }
    else
    {
      for (i=0;i<uiCuWidth;i++)
        piAdiTemp[1+uiCuWidth+i]=piAdiTemp[uiCuWidth];
    }
  }
  
  if (bAboveLeftFlag)
  {
    piRoiTemp=piRoiOrigin-iPicStride-1;
    piAdiTemp[0]=piRoiTemp[0];
  }

  if (bLeftFlag)
  {
    piRoiTemp=piRoiOrigin-1;
    for (i=0;i<uiCuHeight;i++)
    {
      piAdiTemp[(1+i)*uiWidth]=piRoiTemp[0];
      piRoiTemp+=iPicStride;
    }
    if (bBelowLeftFlag)
    {
      for (i=0;i<uiCuHeight;i++)
      {
        piAdiTemp[(1+uiCuHeight+i)*uiWidth]=piRoiTemp[0];
        piRoiTemp+=iPicStride;
      }
    }
    else
    {
      for (i=0;i<uiCuHeight;i++)
        piAdiTemp[(1+uiCuHeight+i)*uiWidth]=piAdiTemp[(uiCuHeight)*uiWidth];
    }
  }
#endif // REFERENCE_SAMPLE_PADDING
  
  // get Cr pattern
  piRoiOrigin = pcCU->getPic()->getPicYuvRec()->getCrAddr(pcCU->getAddr(), pcCU->getZorderIdxInCU()+uiZorderIdxInPart);
  piAdiTemp   = piAdiBuf+uiWidth*uiHeight;
  
#if REFERENCE_SAMPLE_PADDING
#if DEPTH_MAP_GENERATION
  fillReferenceSamples ( pcCU, piRoiOrigin, piAdiTemp, bNeighborFlags, iNumIntraNeighbor, iUnitSize, iNumUnitsInCu, iTotalUnits, uiCuWidth, uiCuHeight, uiWidth, uiHeight, iPicStride, false );
#else
  fillReferenceSamples ( pcCU, piRoiOrigin, piAdiTemp, bNeighborFlags, iNumIntraNeighbor, iUnitSize, iNumUnitsInCu, iTotalUnits, uiCuWidth, uiCuHeight, uiWidth, uiHeight, iPicStride );
#endif
  delete [] bNeighborFlags;
  bNeighborFlags = NULL;
#else // REFERENCE_SAMPLE_PADDING
  for (i=0;i<uiWidth;i++)
    piAdiTemp[i]=iDCValue;
  for (i=0;i<uiHeight;i++)
    piAdiTemp[i*uiWidth]=iDCValue;
  
  piRoiTemp=piRoiOrigin;
  
  if (bAboveFlag)
  {
    piRoiTemp=piRoiOrigin-iPicStride;
    for (i=0;i<uiCuWidth;i++)
      piAdiTemp[1+i]=piRoiTemp[i];
    if (bAboveRightFlag)
    {
      piRoiTemp=piRoiOrigin-iPicStride+uiCuWidth;
      for (i=0;i<uiCuWidth;i++)
        piAdiTemp[1+uiCuWidth+i]=piRoiTemp[i];
    }
    else
    {
      for (i=0;i<uiCuWidth;i++)
        piAdiTemp[1+uiCuWidth+i]=piAdiTemp[uiCuWidth];
    }
  }

  if (bAboveLeftFlag)
  {
    piRoiTemp=piRoiOrigin-iPicStride-1;
    piAdiTemp[0]=piRoiTemp[0];
  }

  if (bLeftFlag)
  {
    piRoiTemp=piRoiOrigin-1;
    for (i=0;i<uiCuHeight;i++)
    {
      piAdiTemp[(1+i)*uiWidth]=piRoiTemp[0];
      piRoiTemp+=iPicStride;
    }
    if (bBelowLeftFlag)
    {
      for (i=0;i<uiCuHeight;i++)
      {
        piAdiTemp[(1+uiCuHeight+i)*uiWidth]=piRoiTemp[0];
        piRoiTemp+=iPicStride;
      }
    }
    else
    {
      for (i=0;i<uiCuHeight;i++)
        piAdiTemp[(1+uiCuHeight+i)*uiWidth]=piAdiTemp[(uiCuHeight)*uiWidth];
    }
  }
#endif // REFERENCE_SAMPLE_PADDING
}

#if REFERENCE_SAMPLE_PADDING
Void TComPattern::fillReferenceSamples( TComDataCU* pcCU, Pel* piRoiOrigin, Int* piAdiTemp, Bool* bNeighborFlags, Int iNumIntraNeighbor, Int iUnitSize, Int iNumUnitsInCu, Int iTotalUnits, UInt uiCuWidth, UInt uiCuHeight, UInt uiWidth, UInt uiHeight, Int iPicStride
#if DEPTH_MAP_GENERATION
                                        , Bool bPrdDepthMap 
#endif
                                        )
{
  Pel* piRoiTemp;
  Int  i, j;
#if DEPTH_MAP_GENERATION
  Int  iDCValue = ( bPrdDepthMap ? PDM_UNDEFINED_DEPTH : ( 1<<( g_uiBitDepth + g_uiBitIncrement - 1) ) );
#else
  Int  iDCValue = ( 1<<( g_uiBitDepth + g_uiBitIncrement - 1) );
#endif
  
  if (iNumIntraNeighbor == 0)
  {
    // Fill border with DC value
    for (i=0; i<uiWidth; i++)
      piAdiTemp[i] = iDCValue;
    for (i=1; i<uiHeight; i++)
      piAdiTemp[i*uiWidth] = iDCValue;
  }
  else if (iNumIntraNeighbor == iTotalUnits)
  {
    // Fill top-left border with rec. samples
    piRoiTemp = piRoiOrigin - iPicStride - 1;
    piAdiTemp[0] = piRoiTemp[0];

    // Fill left border with rec. samples
    piRoiTemp = piRoiOrigin - 1;
    for (i=0; i<uiCuHeight; i++)
    {
      piAdiTemp[(1+i)*uiWidth] = piRoiTemp[0];
      piRoiTemp += iPicStride;
    }

    // Fill below left border with rec. samples
    for (i=0; i<uiCuHeight; i++)
    {
      piAdiTemp[(1+uiCuHeight+i)*uiWidth] = piRoiTemp[0];
      piRoiTemp += iPicStride;
    }

    // Fill top border with rec. samples
    piRoiTemp = piRoiOrigin - iPicStride;
    for (i=0; i<uiCuWidth; i++)
      piAdiTemp[1+i] = piRoiTemp[i];

    // Fill top right border with rec. samples
    piRoiTemp = piRoiOrigin - iPicStride + uiCuWidth;
    for (i=0; i<uiCuWidth; i++)
      piAdiTemp[1+uiCuWidth+i] = piRoiTemp[i];
  }
  else // reference samples are partially available
  {
    Int  iNumUnits2 = iNumUnitsInCu<<1;
    Int  iTotalSamples = iTotalUnits*iUnitSize;
    Pel  *piAdiLine = new Pel[iTotalSamples];
    Pel  *piAdiLineTemp; 
    Bool *pbNeighborFlags;
    Int  iPrev, iNext, iCurr;
    Pel  piRef = 0;

    // Initialize
    for (i=0; i<iTotalSamples; i++)
      piAdiLine[i] = iDCValue;

    // Fill top-left sample
    piRoiTemp = piRoiOrigin - iPicStride - 1;
    piAdiLineTemp = piAdiLine + (iNumUnits2*iUnitSize);
    pbNeighborFlags = bNeighborFlags + iNumUnits2;
    if (*pbNeighborFlags)
    {
      piAdiLineTemp[0] = piRoiTemp[0];
      for (i=1; i<iUnitSize; i++)
        piAdiLineTemp[i] = piAdiLineTemp[0];
    }

    // Fill left & below-left samples
    piRoiTemp += iPicStride;
    piAdiLineTemp--;
    pbNeighborFlags--;
    for (j=0; j<iNumUnits2; j++)
    {
      if (*pbNeighborFlags)
      {
        for (i=0; i<iUnitSize; i++)
          piAdiLineTemp[-i] = piRoiTemp[i*iPicStride];
      }
      piRoiTemp += iUnitSize*iPicStride;
      piAdiLineTemp -= iUnitSize;
      pbNeighborFlags--;
    }

    // Fill above & above-right samples
    piRoiTemp = piRoiOrigin - iPicStride;
    piAdiLineTemp = piAdiLine + ((iNumUnits2+1)*iUnitSize);
    pbNeighborFlags = bNeighborFlags + iNumUnits2 + 1;
    for (j=0; j<iNumUnits2; j++)
    {
      if (*pbNeighborFlags)
      {
        for (i=0; i<iUnitSize; i++)
          piAdiLineTemp[i] = piRoiTemp[i];
      }
      piRoiTemp += iUnitSize;
      piAdiLineTemp += iUnitSize;
      pbNeighborFlags++;
    }

    // Pad reference samples when necessary
    iPrev = -1;
    iCurr = 0;
    iNext = 1;
    piAdiLineTemp = piAdiLine;
    while (iCurr < iTotalUnits)
    {
      if (bNeighborFlags[iCurr])
      {
        // Move on to next block if current unit is available
        piAdiLineTemp += iUnitSize;
        iPrev++;
        iCurr++;
        iNext++;
      }
      else
      {
        // Interpolate from nearest samples if current unit is not available
        
        while (iNext < iTotalUnits && !bNeighborFlags[iNext])
          iNext++;

        if (iPrev >= 0 && iNext < iTotalUnits)
          piRef = (piAdiLine[iCurr*iUnitSize-1] + piAdiLine[iNext*iUnitSize] + 1) >> 1;
        else if (iPrev >= 0)
          piRef = piAdiLine[iCurr*iUnitSize-1];
        else if (iNext < iTotalUnits)
          piRef = piAdiLine[iNext*iUnitSize];
        else
          printf("\nERROR! No valid samples to interpolate.\n");

        // Pad unavailable samples with new value
        while (iCurr < iNext)
        {
          for (i=0; i<iUnitSize; i++)
            piAdiLineTemp[i] = piRef;
          piAdiLineTemp += iUnitSize;
          iPrev++;
          iCurr++;
        }
        iNext++;
      }
    }

    // Copy processed samples
    piAdiLineTemp = piAdiLine + uiHeight + iUnitSize - 2;
    for (i=0; i<uiWidth; i++)
      piAdiTemp[i] = piAdiLineTemp[i];
    piAdiLineTemp = piAdiLine + uiHeight - 1;
    for (i=1; i<uiHeight; i++)
      piAdiTemp[i*uiWidth] = piAdiLineTemp[-i];

    delete [] piAdiLine;
    piAdiLine = NULL;
  }
}
#endif // REFERENCE_SAMPLE_PADDING

Int* TComPattern::getAdiOrgBuf( Int iCuWidth, Int iCuHeight, Int* piAdiBuf)
{
  return piAdiBuf;
}

Int* TComPattern::getAdiCbBuf( Int iCuWidth, Int iCuHeight, Int* piAdiBuf)
{
  return piAdiBuf;
}

Int* TComPattern::getAdiCrBuf(Int iCuWidth,Int iCuHeight, Int* piAdiBuf)
{
  return piAdiBuf+(iCuWidth*2+1)*(iCuHeight*2+1);
}

#if QC_MDIS
Int* TComPattern::getPredictorPtr ( UInt uiDirMode, UInt uiWidthBits, Int iCuWidth, Int iCuHeight, Int* piAdiBuf )
{
#if MN_MDIS_SIMPLIFICATION
  static const UChar g_aucIntraFilter[7][34] =
  {
      {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, //2x2
      {0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, //4x4
      {0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, //8x8
      {0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, //16x16
      {0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, //32x32
      {0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, //64x64
      {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}  //128x128
  };
#else
  static const UChar g_aucIntraFilter[7][34] =
  {
      {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, //2x2
      {0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, //4x4
      {0, 0, 0, 1, 1, 2, 2, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, //8x8
      {0, 0, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, //16x16
      {0, 0, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2}, //32x32
      {0, 0, 0, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, //64x64
      {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}  //128x128
  };
#endif

  Int* piSrc;
#if ADD_PLANAR_MODE
  mapPlanartoDC( uiDirMode );
#endif
#if HHI_DMM_WEDGE_INTRA || HHI_DMM_PRED_TEX
  UChar ucFiltIdx = 0;
  if ( uiDirMode < 34 )
  {
    ucFiltIdx = g_aucIntraFilter[uiWidthBits][uiDirMode];
  }
#else
  UChar ucFiltIdx = g_aucIntraFilter[uiWidthBits][uiDirMode];
#endif

#if MN_MDIS_SIMPLIFICATION
  assert( ucFiltIdx <= 1 );
#else
  assert( ucFiltIdx <= 2 );
#endif

  piSrc = getAdiOrgBuf( iCuWidth, iCuHeight, piAdiBuf );

  if ( ucFiltIdx )
  {
#if MN_MDIS_SIMPLIFICATION
    piSrc += ((iCuWidth << 1) + 1) * ((iCuHeight << 1) + 1);
#else
    piSrc += (((iCuWidth << 1) + 1) * ((iCuHeight << 1) + 1) << (ucFiltIdx - 1));
#endif
  }

  return piSrc;
}
#endif //QC_MDIS

#if CONSTRAINED_INTRA_PRED
Bool TComPattern::isAboveLeftAvailableForCIP( TComDataCU* pcCU, UInt uiPartIdxLT )
{
  Bool bAboveLeftFlag;
  UInt uiPartAboveLeft;
  TComDataCU* pcCUAboveLeft = pcCU->getPUAboveLeft( uiPartAboveLeft, uiPartIdxLT, true, false );
  bAboveLeftFlag = ( pcCUAboveLeft && pcCUAboveLeft->getPredictionMode( uiPartAboveLeft ) == MODE_INTRA );
  return bAboveLeftFlag;
}

#if REFERENCE_SAMPLE_PADDING
Int TComPattern::isAboveAvailableForCIP( TComDataCU* pcCU, UInt uiPartIdxLT, UInt uiPartIdxRT, Bool *bValidFlags )
#else
Bool TComPattern::isAboveAvailableForCIP( TComDataCU* pcCU, UInt uiPartIdxLT, UInt uiPartIdxRT )
#endif
{
  const UInt uiRasterPartBegin = g_auiZscanToRaster[uiPartIdxLT];
  const UInt uiRasterPartEnd = g_auiZscanToRaster[uiPartIdxRT]+1;
  const UInt uiIdxStep = 1;
#if REFERENCE_SAMPLE_PADDING
  Bool *pbValidFlags = bValidFlags;
  Int iNumIntra = 0;
#else
  Bool bAboveFlag = true;
#endif
#if MN_DC_PRED_FILTER
  m_bAboveFlagForDCFilt = true;
#endif

  for ( UInt uiRasterPart = uiRasterPartBegin; uiRasterPart < uiRasterPartEnd; uiRasterPart += uiIdxStep )
  {
    UInt uiPartAbove;
    TComDataCU* pcCUAbove = pcCU->getPUAbove( uiPartAbove, g_auiRasterToZscan[uiRasterPart], true, false );
#if REFERENCE_SAMPLE_PADDING
    if ( pcCUAbove && pcCUAbove->getPredictionMode( uiPartAbove ) == MODE_INTRA )
    {
      iNumIntra++;
      *pbValidFlags = true;
    }
    else
    {
      *pbValidFlags = false;
#if MN_DC_PRED_FILTER
      m_bAboveFlagForDCFilt = false;
#endif
    }
    pbValidFlags++;
#else
    if ( !pcCUAbove || pcCUAbove->getPredictionMode( uiPartAbove ) != MODE_INTRA )
    {
      bAboveFlag = false;
#if MN_DC_PRED_FILTER
      m_bAboveFlagForDCFilt = false;
#endif
      break;
    }
#endif
  }
#if REFERENCE_SAMPLE_PADDING
  return iNumIntra;
#else
  return bAboveFlag;
#endif
}

#if REFERENCE_SAMPLE_PADDING
Int TComPattern::isLeftAvailableForCIP( TComDataCU* pcCU, UInt uiPartIdxLT, UInt uiPartIdxLB, Bool *bValidFlags )
#else
Bool TComPattern::isLeftAvailableForCIP( TComDataCU* pcCU, UInt uiPartIdxLT, UInt uiPartIdxLB )
#endif
{
  const UInt uiRasterPartBegin = g_auiZscanToRaster[uiPartIdxLT];
  const UInt uiRasterPartEnd = g_auiZscanToRaster[uiPartIdxLB]+1;
  const UInt uiIdxStep = pcCU->getPic()->getNumPartInWidth();
#if REFERENCE_SAMPLE_PADDING
  Bool *pbValidFlags = bValidFlags;
  Int iNumIntra = 0;
#else
  Bool bLeftFlag = true;
#endif
#if MN_DC_PRED_FILTER
  m_bLeftFlagForDCFilt = true;
#endif

  for ( UInt uiRasterPart = uiRasterPartBegin; uiRasterPart < uiRasterPartEnd; uiRasterPart += uiIdxStep )
  {
    UInt uiPartLeft;
    TComDataCU* pcCULeft = pcCU->getPULeft( uiPartLeft, g_auiRasterToZscan[uiRasterPart], true, false );
#if REFERENCE_SAMPLE_PADDING
    if ( pcCULeft && pcCULeft->getPredictionMode( uiPartLeft ) == MODE_INTRA )
    {
      iNumIntra++;
      *pbValidFlags = true;
    }
    else
    {
      *pbValidFlags = false;
#if MN_DC_PRED_FILTER
      m_bLeftFlagForDCFilt = false;
#endif
    }
    pbValidFlags--; // opposite direction
#else
    if ( !pcCULeft || pcCULeft->getPredictionMode( uiPartLeft ) != MODE_INTRA )
    {
      bLeftFlag = false;
#if MN_DC_PRED_FILTER
      m_bLeftFlagForDCFilt = false;
#endif
      break;
    }
#endif
  }

#if REFERENCE_SAMPLE_PADDING
  return iNumIntra;
#else
  return bLeftFlag;
#endif
}

#if REFERENCE_SAMPLE_PADDING
Int TComPattern::isAboveRightAvailableForCIP( TComDataCU* pcCU, UInt uiPartIdxLT, UInt uiPartIdxRT, Bool *bValidFlags )
#else
Bool TComPattern::isAboveRightAvailableForCIP( TComDataCU* pcCU, UInt uiPartIdxLT, UInt uiPartIdxRT )
#endif
{
  const UInt uiNumUnitsInPU = g_auiZscanToRaster[uiPartIdxRT] - g_auiZscanToRaster[uiPartIdxLT] + 1;
  const UInt uiPuWidth = uiNumUnitsInPU * pcCU->getPic()->getMinCUWidth();
#if REFERENCE_SAMPLE_PADDING
  Bool *pbValidFlags = bValidFlags;
  Int iNumIntra = 0;
#else
  Bool bAboveRightFlag = true;
#endif

  for ( UInt uiOffset = 1; uiOffset <= uiNumUnitsInPU; uiOffset++ )
  {
    UInt uiPartAboveRight;
    TComDataCU* pcCUAboveRight = pcCU->getPUAboveRightAdi( uiPartAboveRight, uiPuWidth, uiPartIdxRT, uiOffset, true, false );
#if REFERENCE_SAMPLE_PADDING
    if ( pcCUAboveRight && pcCUAboveRight->getPredictionMode( uiPartAboveRight ) == MODE_INTRA )
    {
      iNumIntra++;
      *pbValidFlags = true;
    }
    else
    {
      *pbValidFlags = false;
    }
    pbValidFlags++;
#else
    if ( !pcCUAboveRight || pcCUAboveRight->getPredictionMode( uiPartAboveRight ) != MODE_INTRA )
    {
      bAboveRightFlag = false;
      break;
    }
#endif
  }

#if REFERENCE_SAMPLE_PADDING
  return iNumIntra;
#else
  return bAboveRightFlag;
#endif
}

#if REFERENCE_SAMPLE_PADDING
Int TComPattern::isBelowLeftAvailableForCIP( TComDataCU* pcCU, UInt uiPartIdxLT, UInt uiPartIdxLB, Bool *bValidFlags )
#else
Bool TComPattern::isBelowLeftAvailableForCIP( TComDataCU* pcCU, UInt uiPartIdxLT, UInt uiPartIdxLB )
#endif
{
  const UInt uiNumUnitsInPU = (g_auiZscanToRaster[uiPartIdxLB] - g_auiZscanToRaster[uiPartIdxLT]) / pcCU->getPic()->getNumPartInWidth() + 1;
  const UInt uiPuHeight = uiNumUnitsInPU * pcCU->getPic()->getMinCUHeight();
#if REFERENCE_SAMPLE_PADDING
  Bool *pbValidFlags = bValidFlags;
  Int iNumIntra = 0;
#else
  Bool bBelowLeftFlag = true;
#endif

  for ( UInt uiOffset = 1; uiOffset <= uiNumUnitsInPU; uiOffset++ )
  {
    UInt uiPartBelowLeft;
    TComDataCU* pcCUBelowLeft = pcCU->getPUBelowLeftAdi( uiPartBelowLeft, uiPuHeight, uiPartIdxLB, uiOffset, true, false );
#if REFERENCE_SAMPLE_PADDING
    if ( pcCUBelowLeft && pcCUBelowLeft->getPredictionMode( uiPartBelowLeft ) == MODE_INTRA )
    {
      iNumIntra++;
      *pbValidFlags = true;
    }
    else
    {
      *pbValidFlags = false;
    }
    pbValidFlags--; // opposite direction
#else
    if ( !pcCUBelowLeft || pcCUBelowLeft->getPredictionMode( uiPartBelowLeft ) != MODE_INTRA )
    {
      bBelowLeftFlag = false;
      break;
    }
#endif
  }

#if REFERENCE_SAMPLE_PADDING
  return iNumIntra;
#else
  return bBelowLeftFlag;
#endif
}
#endif //CONSTRAINED_INTRA_PRED