/* 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
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

/** \file     TAppEncCfg.cpp
    \brief    Handle encoder configuration parameters
*/

#include <stdlib.h>
#include <cassert>
#include <cstring>
#include <string>
#include "TLibCommon/TComRom.h"
#include "TAppEncCfg.h"
#include "TAppCommon/program_options_lite.h"
#include "TLibEncoder/TEncRateCtrl.h"
#ifdef WIN32
#define strdup _strdup
#endif

using namespace std;
namespace po = df::program_options_lite;

//! \ingroup TAppEncoder
//! \{

/* configuration helper funcs */
void doOldStyleCmdlineOn(po::Options& opts, const std::string& arg);
void doOldStyleCmdlineOff(po::Options& opts, const std::string& arg);

// ====================================================================================================================
// Local constants
// ====================================================================================================================

/// max value of source padding size
/** \todo replace it by command line option
 */
#define MAX_PAD_SIZE                16

// ====================================================================================================================
// Constructor / destructor / initialization / destroy
// ====================================================================================================================

TAppEncCfg::TAppEncCfg()
: m_pchInputFile()
, m_pchBitstreamFile()
, m_pchReconFile()
, m_pchdQPFile()
, m_pchColumnWidth()
, m_pchRowHeight()
, m_scalingListFile()
{
  m_aidQP = NULL;
}

TAppEncCfg::~TAppEncCfg()
{
  if ( m_aidQP )
  {
    delete[] m_aidQP;
  }
  free(m_pchInputFile);
  free(m_pchBitstreamFile);
  free(m_pchReconFile);
  free(m_pchdQPFile);
  free(m_pchColumnWidth);
  free(m_pchRowHeight);
  free(m_scalingListFile);
}

Void TAppEncCfg::create()
{
}

Void TAppEncCfg::destroy()
{
}

std::istringstream &operator>>(std::istringstream &in, GOPEntry &entry)     //input
{
  in>>entry.m_sliceType;
  in>>entry.m_POC;
  in>>entry.m_QPOffset;
  in>>entry.m_QPFactor;
  in>>entry.m_temporalId;
  in>>entry.m_numRefPicsActive;
  in>>entry.m_refPic;
  in>>entry.m_numRefPics;
  for ( Int i = 0; i < entry.m_numRefPics; i++ )
  {
    in>>entry.m_referencePics[i];
  }
  in>>entry.m_interRPSPrediction;
#if AUTO_INTER_RPS
  if (entry.m_interRPSPrediction==1)
  {
    in>>entry.m_deltaRIdxMinus1;
    in>>entry.m_deltaRPS;
    in>>entry.m_numRefIdc;
    for ( Int i = 0; i < entry.m_numRefIdc; i++ )
    {
      in>>entry.m_refIdc[i];
    }
  }
  else if (entry.m_interRPSPrediction==2)
  {
    in>>entry.m_deltaRIdxMinus1;
    in>>entry.m_deltaRPS;
  }
#else
  if (entry.m_interRPSPrediction)
  {
    in>>entry.m_deltaRIdxMinus1;
    in>>entry.m_deltaRPS;
    in>>entry.m_numRefIdc;
    for ( Int i = 0; i < entry.m_numRefIdc; i++ )
    {
      in>>entry.m_refIdc[i];
    }
  }
#endif
  return in;
}

// ====================================================================================================================
// Public member functions
// ====================================================================================================================

/** \param  argc        number of arguments
    \param  argv        array of arguments
    \retval             true when success
 */
Bool TAppEncCfg::parseCfg( Int argc, Char* argv[] )
{
  bool do_help = false;
  
  string cfg_InputFile;
  string cfg_BitstreamFile;
  string cfg_ReconFile;
  string cfg_dQPFile;
  string cfg_ColumnWidth;
  string cfg_RowHeight;
  string cfg_ScalingListFile;
  po::Options opts;
  opts.addOptions()
  ("help", do_help, false, "this help text")
  ("c", po::parseConfigFile, "configuration file name")
  
  // File, I/O and source parameters
  ("InputFile,i",           cfg_InputFile,     string(""), "Original YUV input file name")
  ("BitstreamFile,b",       cfg_BitstreamFile, string(""), "Bitstream output file name")
  ("ReconFile,o",           cfg_ReconFile,     string(""), "Reconstructed YUV output file name")
  ("SourceWidth,-wdt",      m_iSourceWidth,        0, "Source picture width")
  ("SourceHeight,-hgt",     m_iSourceHeight,       0, "Source picture height")
  ("InputBitDepth",         m_uiInputBitDepth,    8u, "Bit-depth of input file")
  ("BitDepth",              m_uiInputBitDepth,    8u, "Deprecated alias of InputBitDepth")
  ("OutputBitDepth",        m_uiOutputBitDepth,   0u, "Bit-depth of output file")
  ("InternalBitDepth",      m_uiInternalBitDepth, 0u, "Internal bit-depth (BitDepth+BitIncrement)")
  ("CroppingMode",          m_croppingMode,        0, "Cropping mode (0: no cropping, 1:automatic padding, 2: padding, 3:cropping")
  ("HorizontalPadding,-pdx",m_aiPad[0],            0, "Horizontal source padding for cropping mode 2")
  ("VerticalPadding,-pdy",  m_aiPad[1],            0, "Vertical source padding for cropping mode 2")
  ("CropLeft",              m_cropLeft,            0, "Left cropping for cropping mode 3")
  ("CropRight",             m_cropRight,           0, "Right cropping for cropping mode 3")
  ("CropTop",               m_cropTop,             0, "Top cropping for cropping mode 3")
  ("CropBottom",            m_cropBottom,          0, "Bottom cropping for cropping mode 3")
  ("FrameRate,-fr",         m_iFrameRate,          0, "Frame rate")
  ("FrameSkip,-fs",         m_FrameSkip,          0u, "Number of frames to skip at start of input YUV")
  ("FramesToBeEncoded,f",   m_iFrameToBeEncoded,   0, "Number of frames to be encoded (default=all)")
  
  // Unit definition parameters
  ("MaxCUWidth",              m_uiMaxCUWidth,             64u)
  ("MaxCUHeight",             m_uiMaxCUHeight,            64u)
  // todo: remove defaults from MaxCUSize
  ("MaxCUSize,s",             m_uiMaxCUWidth,             64u, "Maximum CU size")
  ("MaxCUSize,s",             m_uiMaxCUHeight,            64u, "Maximum CU size")
  ("MaxPartitionDepth,h",     m_uiMaxCUDepth,              4u, "CU depth")
  
  ("QuadtreeTULog2MaxSize",   m_uiQuadtreeTULog2MaxSize,   6u, "Maximum TU size in logarithm base 2")
  ("QuadtreeTULog2MinSize",   m_uiQuadtreeTULog2MinSize,   2u, "Minimum TU size in logarithm base 2")
  
  ("QuadtreeTUMaxDepthIntra", m_uiQuadtreeTUMaxDepthIntra, 1u, "Depth of TU tree for intra CUs")
  ("QuadtreeTUMaxDepthInter", m_uiQuadtreeTUMaxDepthInter, 2u, "Depth of TU tree for inter CUs")
  
  // Coding structure paramters
  ("IntraPeriod,-ip",         m_iIntraPeriod,              -1, "Intra period in frames, (-1: only first frame)")
  ("DecodingRefreshType,-dr", m_iDecodingRefreshType,       0, "Intra refresh type (0:none 1:CRA 2:IDR)")
  ("GOPSize,g",               m_iGOPSize,                   1, "GOP size of temporal structure")
#if REMOVE_LC
  ("ListCombination,-lc",     m_bUseLComb,               true, "Combined reference list for uni-prediction estimation in B-slices")
#else
  ("ListCombination,-lc",     m_bUseLComb,               true, "Combined reference list flag for uni-prediction in B-slices")
#endif
#if !REMOVE_LC
  ("LCModification",          m_bLCMod,                 false, "Enables signalling of combined reference list derivation")
#endif  
  // motion options
  ("FastSearch",              m_iFastSearch,                1, "0:Full search  1:Diamond  2:PMVFAST")
  ("SearchRange,-sr",         m_iSearchRange,              96, "Motion search range")
  ("BipredSearchRange",       m_bipredSearchRange,          4, "Motion search range for bipred refinement")
  ("HadamardME",              m_bUseHADME,               true, "Hadamard ME for fractional-pel")
  ("ASR",                     m_bUseASR,                false, "Adaptive motion search range")

  // Mode decision parameters
#if !REMOVE_INTER_4X4
  ("DisableInter4x4",         m_bDisInter4x4,            true, "Disable Inter 4x4")
#endif
  ("LambdaModifier0,-LM0", m_adLambdaModifier[ 0 ], ( double )1.0, "Lambda modifier for temporal layer 0")
  ("LambdaModifier1,-LM1", m_adLambdaModifier[ 1 ], ( double )1.0, "Lambda modifier for temporal layer 1")
  ("LambdaModifier2,-LM2", m_adLambdaModifier[ 2 ], ( double )1.0, "Lambda modifier for temporal layer 2")
  ("LambdaModifier3,-LM3", m_adLambdaModifier[ 3 ], ( double )1.0, "Lambda modifier for temporal layer 3")
  ("LambdaModifier4,-LM4", m_adLambdaModifier[ 4 ], ( double )1.0, "Lambda modifier for temporal layer 4")
  ("LambdaModifier5,-LM5", m_adLambdaModifier[ 5 ], ( double )1.0, "Lambda modifier for temporal layer 5")
  ("LambdaModifier6,-LM6", m_adLambdaModifier[ 6 ], ( double )1.0, "Lambda modifier for temporal layer 6")
  ("LambdaModifier7,-LM7", m_adLambdaModifier[ 7 ], ( double )1.0, "Lambda modifier for temporal layer 7")

  /* Quantization parameters */
  ("QP,q",          m_fQP,             30.0, "Qp value, if value is float, QP is switched once during encoding")
  ("DeltaQpRD,-dqr",m_uiDeltaQpRD,       0u, "max dQp offset for slice")
  ("MaxDeltaQP,d",  m_iMaxDeltaQP,        0, "max dQp offset for block")
  ("MaxCuDQPDepth,-dqd",  m_iMaxCuDQPDepth,        0, "max depth for a minimum CuDQP")

  ("CbQpOffset,-cbqpofs",  m_cbQpOffset,        0, "Chroma Cb QP Offset")
  ("CrQpOffset,-crqpofs",  m_crQpOffset,        0, "Chroma Cr QP Offset")

#if ADAPTIVE_QP_SELECTION
  ("AdaptiveQpSelection,-aqps",   m_bUseAdaptQpSelect,           false, "AdaptiveQpSelection")
#endif

  ("AdaptiveQP,-aq",                m_bUseAdaptiveQP,           false, "QP adaptation based on a psycho-visual model")
  ("MaxQPAdaptationRange,-aqr",     m_iQPAdaptationRange,           6, "QP adaptation range")
  ("dQPFile,m",                     cfg_dQPFile,           string(""), "dQP file name")
  ("RDOQ",                          m_bUseRDOQ,                  true )
  ("TemporalLayerQPOffset_L0,-tq0", m_aiTLayerQPOffset[0], MAX_QP + 1, "QP offset of temporal layer 0")
  ("TemporalLayerQPOffset_L1,-tq1", m_aiTLayerQPOffset[1], MAX_QP + 1, "QP offset of temporal layer 1")
  ("TemporalLayerQPOffset_L2,-tq2", m_aiTLayerQPOffset[2], MAX_QP + 1, "QP offset of temporal layer 2")
  ("TemporalLayerQPOffset_L3,-tq3", m_aiTLayerQPOffset[3], MAX_QP + 1, "QP offset of temporal layer 3")
  
  // Entropy coding parameters
  ("SBACRD",                         m_bUseSBACRD,                      true, "SBAC based RD estimation")
  
  // Deblocking filter parameters
  ("LoopFilterDisable",              m_bLoopFilterDisable,             false )
#if DBL_HL_SYNTAX
  ("LoopFilterOffsetInPPS",          m_loopFilterOffsetInPPS,          false )
#else
  ("LoopFilterOffsetInAPS",          m_loopFilterOffsetInAPS,          false )
#endif
  ("LoopFilterBetaOffset_div2",      m_loopFilterBetaOffsetDiv2,           0 )
  ("LoopFilterTcOffset_div2",        m_loopFilterTcOffsetDiv2,             0 )
  ("DeblockingFilterControlPresent", m_DeblockingFilterControlPresent, false )

  // Coding tools
  ("NSQT",                    m_enableNSQT,              true, "Enable non-square transforms")
  ("AMP",                     m_enableAMP,               true, "Enable asymmetric motion partitions")
  ("LMChroma",                m_bUseLMChroma,            true, "Intra chroma prediction based on reconstructed luma")
#if INTRA_TRANSFORMSKIP
  ("TS",                      m_useTansformSkip,         false, "Intra transform skipping")
  ("TSFast",                  m_useTansformSkipFast,     false, "Fast intra transform skipping")
#endif
  ("ALF",                     m_bUseALF,                 true, "Enable Adaptive Loop Filter")
  ("SAO",                     m_bUseSAO,                 true, "Enable Sample Adaptive Offset")   
  ("MaxNumOffsetsPerPic",     m_maxNumOffsetsPerPic,     2048, "Max number of SAO offset per picture (Default: 2048)")   
#if SAO_REMOVE_APS // encoder renaming
  ("SAOLcuBasedOptimization", m_saoLcuBasedOptimization, true, "0: SAO picture-based optimization, 1: SAO LCU-based optimization ")   
#else
  ("SAOInterleaving",         m_saoInterleavingFlag,    false, "0: SAO Picture Mode, 1: SAO Interleaving ")   
#endif
#if AHG6_ALF_OPTION2
  ("ALFLowLatencyEncode", m_alfLowLatencyEncoding, false, "Low-latency ALF encoding, 0: picture latency (trained from current frame), 1: LCU latency(trained from previous frame)")
#else
  ("ALFEncodePassReduction", m_iALFEncodePassReduction, 0, "0:Original 16-pass, 1: 1-pass, 2: 2-pass encoding")

  ("ALFMaxNumFilter,-ALFMNF", m_iALFMaxNumberFilters, 16, "16: No Constrained, 1-15: Constrained max number of filter")
  ("ALFParamInSlice", m_bALFParamInSlice, false, "ALF parameters in 0: APS, 1: slice header")
  ("ALFPicBasedEncode", m_bALFPicBasedEncode, true, "ALF picture-based encoding 0: false, 1: true")
#endif
    ("SliceMode",            m_iSliceMode,           0, "0: Disable all Recon slice limits, 1: Enforce max # of LCUs, 2: Enforce max # of bytes")
    ("SliceArgument",        m_iSliceArgument,       0, "if SliceMode==1 SliceArgument represents max # of LCUs. if SliceMode==2 SliceArgument represents max # of bytes.")
    ("DependentSliceMode",     m_iDependentSliceMode,    0, "0: Disable all dependent slice limits, 1: Enforce max # of LCUs, 2: Enforce constraint based dependent slices")
    ("DependentSliceArgument", m_iDependentSliceArgument,0, "if DependentSliceMode==1 SliceArgument represents max # of LCUs. if DependentSliceMode==2 DependentSliceArgument represents max # of bins.")
#if DEPENDENT_SLICES
    ("CabacIndependentFlag", m_bCabacIndependentFlag, true)
#endif
    ("SliceGranularity",     m_iSliceGranularity,    0, "0: Slices always end at LCU borders. 1-3: slices may end at a depth of 1-3 below LCU level.")
    ("LFCrossSliceBoundaryFlag", m_bLFCrossSliceBoundaryFlag, true)

    ("ConstrainedIntraPred", m_bUseConstrainedIntraPred, false, "Constrained Intra Prediction")
    ("PCMEnabledFlag", m_usePCM         , false)
    ("PCMLog2MaxSize", m_pcmLog2MaxSize, 5u)
    ("PCMLog2MinSize", m_uiPCMLog2MinSize, 3u)

    ("PCMInputBitDepthFlag", m_bPCMInputBitDepthFlag, true)
    ("PCMFilterDisableFlag", m_bPCMFilterDisableFlag, false)
#if LOSSLESS_CODING
    ("LosslessCuEnabled", m_useLossless, false)
#endif
    ("weighted_pred_flag,-wpP",     m_bUseWeightPred, false, "weighted prediction flag (P-Slices)")
#if REMOVE_IMPLICIT_WP
    ("weighted_bipred_flag,-wpB",   m_useWeightedBiPred,    false,    "weighted bipred flag (B-Slices)")
#else
    ("weighted_bipred_idc,-wpBidc", m_uiBiPredIdc,    0u,    "weighted bipred idc (B-Slices)")
#endif
#if !TILES_OR_ENTROPY_FIX
    ("TileInfoPresentFlag",         m_iColumnRowInfoPresent,         1,          "0: tiles parameters are NOT present in the PPS. 1: tiles parameters are present in the PPS")
#endif
    ("UniformSpacingIdc",           m_iUniformSpacingIdr,            0,          "Indicates if the column and row boundaries are distributed uniformly")
    ("NumTileColumnsMinus1",        m_iNumColumnsMinus1,             0,          "Number of columns in a picture minus 1")
    ("ColumnWidthArray",            cfg_ColumnWidth,                 string(""), "Array containing ColumnWidth values in units of LCU")
    ("NumTileRowsMinus1",           m_iNumRowsMinus1,                0,          "Number of rows in a picture minus 1")
    ("RowHeightArray",              cfg_RowHeight,                   string(""), "Array containing RowHeight values in units of LCU")
#if !EXPLICITLY_SIGNAL_ENTRY_POINTS
    ("TileLocationInSliceHeaderFlag", m_iTileLocationInSliceHeaderFlag, 0,       "0: Disable transmission of tile location in slice header. 1: Transmit tile locations in slice header.")
#endif
#if !REMOVE_TILE_MARKERS
    ("TileMarkerFlag",                m_iTileMarkerFlag,                0,       "0: Disable transmission of lightweight tile marker. 1: Transmit light weight tile marker.")
    ("MaxTileMarkerEntryPoints",    m_iMaxTileMarkerEntryPoints,    4,       "Maximum number of uniformly-spaced tile entry points (using light weigh tile markers). Default=4. If number of tiles < MaxTileMarkerEntryPoints then all tiles have entry points.")
#endif
#if !TILES_OR_ENTROPY_FIX
    ("TileControlPresentFlag",       m_iTileBehaviorControlPresentFlag,         1,          "0: tiles behavior control parameters are NOT present in the PPS. 1: tiles behavior control parameters are present in the PPS")
#endif
    ("LFCrossTileBoundaryFlag",      m_bLFCrossTileBoundaryFlag,             true,          "1: cross-tile-boundary loop filtering. 0:non-cross-tile-boundary loop filtering")
    ("WaveFrontSynchro",            m_iWaveFrontSynchro,             0,          "0: no synchro; 1 synchro with TR; 2 TRR etc")
    ("WaveFrontFlush",              m_iWaveFrontFlush,               0,          "Flush and terminate CABAC coding for each LCU line")
#if !WPP_SUBSTREAM_PER_ROW
    ("WaveFrontSubstreams",         m_iWaveFrontSubstreams,          1,          "# coded substreams wanted; per tile if TileBoundaryIndependenceIdc is 1, otherwise per frame")
#endif
    ("ScalingList",                 m_useScalingListId,              0,          "0: no scaling list, 1: default scaling lists, 2: scaling lists specified in ScalingListFile")
    ("ScalingListFile",             cfg_ScalingListFile,             string(""), "Scaling list file name")
    ("SignHideFlag,-SBH",                m_signHideFlag, 1)
#if !FIXED_SBH_THRESHOLD
    ("SignHideThreshold,-TSIG",          m_signHidingThreshold,         4)
#endif
  /* Misc. */
#if HASH_TYPE
  ("SEIpictureDigest", m_pictureDigestEnabled, 1, "Control generation of picture_digest SEI messages\n"
                                              "\t3: checksum\n"
                                              "\t2: CRC\n"
                                              "\t1: use MD5\n"
                                              "\t0: disable")
#else
  ("SEIpictureDigest", m_pictureDigestEnabled, true, "Control generation of picture_digest SEI messages\n"
                                              "\t1: use MD5\n"
                                              "\t0: disable")
#endif
#if SLICE_TMVP_ENABLE
  ("TMVPMode", m_TMVPModeId, 1, "TMVP mode 0: TMVP disable for all slices. 1: TMVP enable for all slices (default) 2: TMVP enable for certain slices only")
#else
  ("TMVP", m_enableTMVP, true, "Enable TMVP" )
#endif
  ("FEN", m_bUseFastEnc, false, "fast encoder setting")
  ("ECU", m_bUseEarlyCU, false, "Early CU setting") 
  ("FDM", m_useFastDecisionForMerge, true, "Fast decision for Merge RD Cost") 
  ("CFM", m_bUseCbfFastMode, false, "Cbf fast mode setting")
  ("ESD", m_useEarlySkipDetection, false, "Early SKIP detection setting")
  ("RateCtrl,-rc", m_enableRateCtrl, false, "Rate control on/off")
  ("TargetBitrate,-tbr", m_targetBitrate, 0, "Input target bitrate")
  ("NumLCUInUnit,-nu", m_numLCUInUnit, 0, "Number of LCUs in an Unit")
  /* Compatability with old style -1 FOO or -0 FOO options. */
  ("1", doOldStyleCmdlineOn, "turn option <name> on")
  ("0", doOldStyleCmdlineOff, "turn option <name> off")

#if CU_LEVEL_TRANSQUANT_BYPASS
  ("TransquantBypassEnableFlag", m_TransquantBypassEnableFlag, false, "transquant_bypass_enable_flag indicator in PPS")
  ("CUTransquantBypassFlagValue", m_CUTransquantBypassFlagValue, false, "Fixed cu_transquant_bypass_flag value, when transquant_bypass_enable_flag is enabled")
#endif
  ;
  
  for(Int i=1; i<MAX_GOP+1; i++) {
    std::ostringstream cOSS;
    cOSS<<"Frame"<<i;
    opts.addOptions()(cOSS.str(), m_GOPList[i-1], GOPEntry());
  }
  po::setDefaults(opts);
  const list<const char*>& argv_unhandled = po::scanArgv(opts, argc, (const char**) argv);

  for (list<const char*>::const_iterator it = argv_unhandled.begin(); it != argv_unhandled.end(); it++)
  {
    fprintf(stderr, "Unhandled argument ignored: `%s'\n", *it);
  }
  
  if (argc == 1 || do_help)
  {
    /* argc == 1: no options have been specified */
    po::doHelp(cout, opts);
    xPrintUsage();
    return false;
  }
  
  /*
   * Set any derived parameters
   */
  /* convert std::string to c string for compatability */
  m_pchInputFile = cfg_InputFile.empty() ? NULL : strdup(cfg_InputFile.c_str());
  m_pchBitstreamFile = cfg_BitstreamFile.empty() ? NULL : strdup(cfg_BitstreamFile.c_str());
  m_pchReconFile = cfg_ReconFile.empty() ? NULL : strdup(cfg_ReconFile.c_str());
  m_pchdQPFile = cfg_dQPFile.empty() ? NULL : strdup(cfg_dQPFile.c_str());
  
  m_pchColumnWidth = cfg_ColumnWidth.empty() ? NULL: strdup(cfg_ColumnWidth.c_str());
  m_pchRowHeight = cfg_RowHeight.empty() ? NULL : strdup(cfg_RowHeight.c_str());
  m_scalingListFile = cfg_ScalingListFile.empty() ? NULL : strdup(cfg_ScalingListFile.c_str());
  
  // TODO:ChromaFmt assumes 4:2:0 below
  switch (m_croppingMode)
  {
  case 0:
    {
      // no cropping or padding
      m_cropLeft = m_cropRight = m_cropTop = m_cropBottom = 0;
      m_aiPad[1] = m_aiPad[0] = 0;
      break;
    }
  case 1:
    {
      // automatic padding to minimum CU size
      Int minCuSize = m_uiMaxCUHeight >> (m_uiMaxCUDepth - 1);
      if (m_iSourceWidth % minCuSize)
      {
        m_aiPad[0] = m_cropRight  = ((m_iSourceWidth / minCuSize) + 1) * minCuSize - m_iSourceWidth;
        m_iSourceWidth  += m_cropRight;
      }
      if (m_iSourceHeight % minCuSize)
      {
        m_aiPad[1] = m_cropBottom = ((m_iSourceHeight / minCuSize) + 1) * minCuSize - m_iSourceHeight;
        m_iSourceHeight += m_cropBottom;
      }
      if (m_aiPad[0] % TComSPS::getCropUnitX(CHROMA_420) != 0)
      {
        fprintf(stderr, "Error: picture width is not an integer multiple of the specified chroma subsampling\n");
        exit(EXIT_FAILURE);
      }
      if (m_aiPad[1] % TComSPS::getCropUnitY(CHROMA_420) != 0)
      {
        fprintf(stderr, "Error: picture height is not an integer multiple of the specified chroma subsampling\n");
        exit(EXIT_FAILURE);
      }
      break;
    }
  case 2:
    {
      //padding
      m_iSourceWidth  += m_aiPad[0];
      m_iSourceHeight += m_aiPad[1];
      m_cropRight  = m_aiPad[0];
      m_cropBottom = m_aiPad[1];
      break;
    }
  case 3:
    {
      // cropping
      if ((m_cropLeft == 0) && (m_cropRight == 0) && (m_cropTop == 0) && (m_cropBottom == 0))
      {
        fprintf(stderr, "Warning: Cropping enabled, but all cropping parameters set to zero\n");
      }
      if ((m_aiPad[1] != 0) || (m_aiPad[0]!=0))
      {
        fprintf(stderr, "Warning: Cropping enabled, padding parameters will be ignored\n");
      }
      m_aiPad[1] = m_aiPad[0] = 0;
      break;
    }
  }
  
  // allocate slice-based dQP values
  m_aidQP = new Int[ m_iFrameToBeEncoded + m_iGOPSize + 1 ];
  ::memset( m_aidQP, 0, sizeof(Int)*( m_iFrameToBeEncoded + m_iGOPSize + 1 ) );
  
  // handling of floating-point QP values
  // if QP is not integer, sequence is split into two sections having QP and QP+1
  m_iQP = (Int)( m_fQP );
  if ( m_iQP < m_fQP )
  {
    Int iSwitchPOC = (Int)( m_iFrameToBeEncoded - (m_fQP - m_iQP)*m_iFrameToBeEncoded + 0.5 );
    
    iSwitchPOC = (Int)( (Double)iSwitchPOC / m_iGOPSize + 0.5 )*m_iGOPSize;
    for ( Int i=iSwitchPOC; i<m_iFrameToBeEncoded + m_iGOPSize + 1; i++ )
    {
      m_aidQP[i] = 1;
    }
  }
  
  // reading external dQP description from file
  if ( m_pchdQPFile )
  {
    FILE* fpt=fopen( m_pchdQPFile, "r" );
    if ( fpt )
    {
      Int iValue;
      Int iPOC = 0;
      while ( iPOC < m_iFrameToBeEncoded )
      {
        if ( fscanf(fpt, "%d", &iValue ) == EOF ) break;
        m_aidQP[ iPOC ] = iValue;
        iPOC++;
      }
      fclose(fpt);
    }
  }
#if WPP_SUBSTREAM_PER_ROW
  m_iWaveFrontSubstreams = m_iWaveFrontSynchro ? (m_iSourceHeight + m_uiMaxCUHeight - 1) / m_uiMaxCUHeight : 1;
#endif
  // check validity of input parameters
  xCheckParameter();
  
  // set global varibles
  xSetGlobal();
  
  // print-out parameters
  xPrintParameter();
  
  return true;
}

// ====================================================================================================================
// Private member functions
// ====================================================================================================================

Bool confirmPara(Bool bflag, const char* message);

Void TAppEncCfg::xCheckParameter()
{
  bool check_failed = false; /* abort if there is a fatal configuration problem */
#define xConfirmPara(a,b) check_failed |= confirmPara(a,b)
  // check range of parameters
  xConfirmPara( m_uiInputBitDepth < 8,                                                      "InputBitDepth must be at least 8" );
  xConfirmPara( m_iFrameRate <= 0,                                                          "Frame rate must be more than 1" );
  xConfirmPara( m_iFrameToBeEncoded <= 0,                                                   "Total Number Of Frames encoded must be more than 0" );
  xConfirmPara( m_iGOPSize < 1 ,                                                            "GOP Size must be greater or equal to 1" );
  xConfirmPara( m_iGOPSize > 1 &&  m_iGOPSize % 2,                                          "GOP Size must be a multiple of 2, if GOP Size is greater than 1" );
  xConfirmPara( (m_iIntraPeriod > 0 && m_iIntraPeriod < m_iGOPSize) || m_iIntraPeriod == 0, "Intra period must be more than GOP size, or -1 , not 0" );
  xConfirmPara( m_iDecodingRefreshType < 0 || m_iDecodingRefreshType > 2,                   "Decoding Refresh Type must be equal to 0, 1 or 2" );
  xConfirmPara( m_iQP <  -6 * ((Int)m_uiInternalBitDepth - 8) || m_iQP > 51,                "QP exceeds supported range (-QpBDOffsety to 51)" );
#if !AHG6_ALF_OPTION2
  xConfirmPara( m_iALFEncodePassReduction < 0 || m_iALFEncodePassReduction > 2,             "ALFEncodePassReduction must be equal to 0, 1 or 2");
  xConfirmPara( m_iALFMaxNumberFilters < 1,                                                 "ALFMaxNumFilter should be larger than 1");  
#endif
  xConfirmPara( m_loopFilterBetaOffsetDiv2 < -13 || m_loopFilterBetaOffsetDiv2 > 13,          "Loop Filter Beta Offset div. 2 exceeds supported range (-13 to 13)");
  xConfirmPara( m_loopFilterTcOffsetDiv2 < -13 || m_loopFilterTcOffsetDiv2 > 13,              "Loop Filter Tc Offset div. 2 exceeds supported range (-13 to 13)");
  xConfirmPara( m_iFastSearch < 0 || m_iFastSearch > 2,                                     "Fast Search Mode is not supported value (0:Full search  1:Diamond  2:PMVFAST)" );
  xConfirmPara( m_iSearchRange < 0 ,                                                        "Search Range must be more than 0" );
  xConfirmPara( m_bipredSearchRange < 0 ,                                                   "Search Range must be more than 0" );
  xConfirmPara( m_iMaxDeltaQP > 7,                                                          "Absolute Delta QP exceeds supported range (0 to 7)" );
  xConfirmPara( m_iMaxCuDQPDepth > m_uiMaxCUDepth - 1,                                          "Absolute depth for a minimum CuDQP exceeds maximum coding unit depth" );

  xConfirmPara( m_cbQpOffset < -12,   "Min. Chroma Cb QP Offset is -12" );
  xConfirmPara( m_cbQpOffset >  12,   "Max. Chroma Cb QP Offset is  12" );
  xConfirmPara( m_crQpOffset < -12,   "Min. Chroma Cr QP Offset is -12" );
  xConfirmPara( m_crQpOffset >  12,   "Max. Chroma Cr QP Offset is  12" );

  xConfirmPara( m_iQPAdaptationRange <= 0,                                                  "QP Adaptation Range must be more than 0" );
  if (m_iDecodingRefreshType == 2)
  {
    xConfirmPara( m_iIntraPeriod > 0 && m_iIntraPeriod <= m_iGOPSize ,                      "Intra period must be larger than GOP size for periodic IDR pictures");
  }
  xConfirmPara( (m_uiMaxCUWidth  >> m_uiMaxCUDepth) < 4,                                    "Minimum partition width size should be larger than or equal to 8");
  xConfirmPara( (m_uiMaxCUHeight >> m_uiMaxCUDepth) < 4,                                    "Minimum partition height size should be larger than or equal to 8");
  xConfirmPara( m_uiMaxCUWidth < 16,                                                        "Maximum partition width size should be larger than or equal to 16");
  xConfirmPara( m_uiMaxCUHeight < 16,                                                       "Maximum partition height size should be larger than or equal to 16");
  xConfirmPara( (m_iSourceWidth  % (m_uiMaxCUWidth  >> (m_uiMaxCUDepth-1)))!=0,             "Resulting coded frame width must be a multiple of the minimum CU size");
  xConfirmPara( (m_iSourceHeight % (m_uiMaxCUHeight >> (m_uiMaxCUDepth-1)))!=0,             "Resulting coded frame height must be a multiple of the minimum CU size");
  
  xConfirmPara( m_uiQuadtreeTULog2MinSize < 2,                                        "QuadtreeTULog2MinSize must be 2 or greater.");
  xConfirmPara( m_uiQuadtreeTULog2MinSize > 5,                                        "QuadtreeTULog2MinSize must be 5 or smaller.");
  xConfirmPara( m_uiQuadtreeTULog2MaxSize < 2,                                        "QuadtreeTULog2MaxSize must be 2 or greater.");
  xConfirmPara( m_uiQuadtreeTULog2MaxSize > 5,                                        "QuadtreeTULog2MaxSize must be 5 or smaller.");
  xConfirmPara( m_uiQuadtreeTULog2MaxSize < m_uiQuadtreeTULog2MinSize,                "QuadtreeTULog2MaxSize must be greater than or equal to m_uiQuadtreeTULog2MinSize.");
  xConfirmPara( (1<<m_uiQuadtreeTULog2MinSize)>(m_uiMaxCUWidth >>(m_uiMaxCUDepth-1)), "QuadtreeTULog2MinSize must not be greater than minimum CU size" ); // HS
  xConfirmPara( (1<<m_uiQuadtreeTULog2MinSize)>(m_uiMaxCUHeight>>(m_uiMaxCUDepth-1)), "QuadtreeTULog2MinSize must not be greater than minimum CU size" ); // HS
  xConfirmPara( ( 1 << m_uiQuadtreeTULog2MinSize ) > ( m_uiMaxCUWidth  >> m_uiMaxCUDepth ), "Minimum CU width must be greater than minimum transform size." );
  xConfirmPara( ( 1 << m_uiQuadtreeTULog2MinSize ) > ( m_uiMaxCUHeight >> m_uiMaxCUDepth ), "Minimum CU height must be greater than minimum transform size." );
  xConfirmPara( m_uiQuadtreeTUMaxDepthInter < 1,                                                         "QuadtreeTUMaxDepthInter must be greater than or equal to 1" );
  xConfirmPara( m_uiQuadtreeTUMaxDepthInter > m_uiQuadtreeTULog2MaxSize - m_uiQuadtreeTULog2MinSize + 1, "QuadtreeTUMaxDepthInter must be less than or equal to the difference between QuadtreeTULog2MaxSize and QuadtreeTULog2MinSize plus 1" );
  xConfirmPara( m_uiQuadtreeTUMaxDepthIntra < 1,                                                         "QuadtreeTUMaxDepthIntra must be greater than or equal to 1" );
  xConfirmPara( m_uiQuadtreeTUMaxDepthIntra > m_uiQuadtreeTULog2MaxSize - m_uiQuadtreeTULog2MinSize + 1, "QuadtreeTUMaxDepthIntra must be less than or equal to the difference between QuadtreeTULog2MaxSize and QuadtreeTULog2MinSize plus 1" );

#if ADAPTIVE_QP_SELECTION
  xConfirmPara( m_bUseAdaptQpSelect == true && m_iQP < 0,                                              "AdaptiveQpSelection must be disabled when QP < 0.");
  xConfirmPara( m_bUseAdaptQpSelect == true && (m_cbQpOffset !=0 || m_crQpOffset != 0 ),               "AdaptiveQpSelection must be disabled when ChromaQpOffset is not equal to 0.");
#endif

  if( m_usePCM)
  {
    xConfirmPara(  m_uiPCMLog2MinSize < 3,                                      "PCMLog2MinSize must be 3 or greater.");
    xConfirmPara(  m_uiPCMLog2MinSize > 5,                                      "PCMLog2MinSize must be 5 or smaller.");
    xConfirmPara(  m_pcmLog2MaxSize > 5,                                        "PCMLog2MaxSize must be 5 or smaller.");
    xConfirmPara(  m_pcmLog2MaxSize < m_uiPCMLog2MinSize,                       "PCMLog2MaxSize must be equal to or greater than m_uiPCMLog2MinSize.");
  }

  xConfirmPara( m_iSliceMode < 0 || m_iSliceMode > 3, "SliceMode exceeds supported range (0 to 3)" );
  if (m_iSliceMode!=0)
  {
    xConfirmPara( m_iSliceArgument < 1 ,         "SliceArgument should be larger than or equal to 1" );
  }
  if (m_iSliceMode==3)
  {
    xConfirmPara( m_iSliceGranularity > 0 ,      "When SliceMode == 3 is chosen, the SliceGranularity must be 0" );
  }
  xConfirmPara( m_iDependentSliceMode < 0 || m_iDependentSliceMode > 2, "DependentSliceMode exceeds supported range (0 to 2)" );
  if (m_iDependentSliceMode!=0)
  {
    xConfirmPara( m_iDependentSliceArgument < 1 ,         "DependentSliceArgument should be larger than or equal to 1" );
  }
  xConfirmPara( m_iSliceGranularity >= m_uiMaxCUDepth, "SliceGranularity must be smaller than maximum cu depth");
  xConfirmPara( m_iSliceGranularity <0 || m_iSliceGranularity > 3, "SliceGranularity exceeds supported range (0 to 3)" );
  xConfirmPara( m_iSliceGranularity > m_iMaxCuDQPDepth, "SliceGranularity must be smaller smaller than or equal to maximum dqp depth" );

  bool tileFlag = (m_iNumColumnsMinus1 > 0 || m_iNumRowsMinus1 > 0 );
  xConfirmPara( tileFlag && m_iDependentSliceMode,            "Tile and Dependent Slice can not be applied together");
  xConfirmPara( tileFlag && m_iWaveFrontSynchro,            "Tile and Wavefront can not be applied together");
  xConfirmPara( m_iWaveFrontSynchro && m_iDependentSliceMode, "Wavefront and Dependent Slice can not be applied together");  

  //TODO:ChromaFmt assumes 4:2:0 below
  xConfirmPara( m_iSourceWidth  % TComSPS::getCropUnitX(CHROMA_420) != 0, "Picture width must be an integer multiple of the specified chroma subsampling");
  xConfirmPara( m_iSourceHeight % TComSPS::getCropUnitY(CHROMA_420) != 0, "Picture height must be an integer multiple of the specified chroma subsampling");

  xConfirmPara( m_aiPad[0] % TComSPS::getCropUnitX(CHROMA_420) != 0, "Horizontal padding must be an integer multiple of the specified chroma subsampling");
  xConfirmPara( m_aiPad[1] % TComSPS::getCropUnitY(CHROMA_420) != 0, "Vertical padding must be an integer multiple of the specified chroma subsampling");

  xConfirmPara( m_cropLeft   % TComSPS::getCropUnitX(CHROMA_420) != 0, "Left cropping must be an integer multiple of the specified chroma subsampling");
  xConfirmPara( m_cropRight  % TComSPS::getCropUnitX(CHROMA_420) != 0, "Right cropping must be an integer multiple of the specified chroma subsampling");
  xConfirmPara( m_cropTop    % TComSPS::getCropUnitY(CHROMA_420) != 0, "Top cropping must be an integer multiple of the specified chroma subsampling");
  xConfirmPara( m_cropBottom % TComSPS::getCropUnitY(CHROMA_420) != 0, "Bottom cropping must be an integer multiple of the specified chroma subsampling");

  // max CU width and height should be power of 2
  UInt ui = m_uiMaxCUWidth;
  while(ui)
  {
    ui >>= 1;
    if( (ui & 1) == 1)
      xConfirmPara( ui != 1 , "Width should be 2^n");
  }
  ui = m_uiMaxCUHeight;
  while(ui)
  {
    ui >>= 1;
    if( (ui & 1) == 1)
      xConfirmPara( ui != 1 , "Height should be 2^n");
  }
  
  Bool verifiedGOP=false;
  Bool errorGOP=false;
  Int checkGOP=1;
  Int numRefs = 1;
  Int refList[MAX_NUM_REF_PICS+1];
  refList[0]=0;
  Bool isOK[MAX_GOP];
  for(Int i=0; i<MAX_GOP; i++) 
  {
    isOK[i]=false;
  }
  Int numOK=0;
  xConfirmPara( m_iIntraPeriod >=0&&(m_iIntraPeriod%m_iGOPSize!=0), "Intra period must be a multiple of GOPSize, or -1" );

  for(Int i=0; i<m_iGOPSize; i++)
  {
    if(m_GOPList[i].m_POC==m_iGOPSize)
    {
      xConfirmPara( m_GOPList[i].m_temporalId!=0 , "The last frame in each GOP must have temporal ID = 0 " );
    }
  }
  
  m_extraRPSs=0;
  //start looping through frames in coding order until we can verify that the GOP structure is correct.
  while(!verifiedGOP&&!errorGOP) 
  {
    Int curGOP = (checkGOP-1)%m_iGOPSize;
    Int curPOC = ((checkGOP-1)/m_iGOPSize)*m_iGOPSize + m_GOPList[curGOP].m_POC;    
    if(m_GOPList[curGOP].m_POC<0) 
    {
      printf("\nError: found fewer Reference Picture Sets than GOPSize\n");
      errorGOP=true;
    }
    else 
    {
      //check that all reference pictures are available, or have a POC < 0 meaning they might be available in the next GOP.
      Bool beforeI = false;
      for(Int i = 0; i< m_GOPList[curGOP].m_numRefPics; i++) 
      {
        Int absPOC = curPOC+m_GOPList[curGOP].m_referencePics[i];
        if(absPOC < 0)
        {
          beforeI=true;
        }
        else 
        {
          Bool found=false;
          for(Int j=0; j<numRefs; j++) 
          {
            if(refList[j]==absPOC) 
            {
              found=true;
              for(Int k=0; k<m_iGOPSize; k++)
              {
                if(absPOC%m_iGOPSize == m_GOPList[k].m_POC%m_iGOPSize)
                {
                  m_GOPList[curGOP].m_usedByCurrPic[i]=m_GOPList[k].m_temporalId<=m_GOPList[curGOP].m_temporalId;
                }
              }
            }
          }
          if(!found)
          {
            printf("\nError: ref pic %d is not available for GOP frame %d\n",m_GOPList[curGOP].m_referencePics[i],curGOP+1);
            errorGOP=true;
          }
        }
      }
      if(!beforeI&&!errorGOP)
      {
        //all ref frames were present
        if(!isOK[curGOP]) 
        {
          numOK++;
          isOK[curGOP]=true;
          if(numOK==m_iGOPSize)
          {
            verifiedGOP=true;
          }
        }
      }
      else 
      {
        //create a new GOPEntry for this frame containing all the reference pictures that were available (POC > 0)
        m_GOPList[m_iGOPSize+m_extraRPSs]=m_GOPList[curGOP];
        Int newRefs=0;
        for(Int i = 0; i< m_GOPList[curGOP].m_numRefPics; i++) 
        {
          Int absPOC = curPOC+m_GOPList[curGOP].m_referencePics[i];
          if(absPOC>=0)
          {
            m_GOPList[m_iGOPSize+m_extraRPSs].m_referencePics[newRefs]=m_GOPList[curGOP].m_referencePics[i];
            m_GOPList[m_iGOPSize+m_extraRPSs].m_usedByCurrPic[newRefs]=m_GOPList[curGOP].m_usedByCurrPic[i];
            newRefs++;
          }
        }
        Int numPrefRefs = m_GOPList[curGOP].m_numRefPicsActive;
        
        for(Int offset = -1; offset>-checkGOP; offset--)
        {
          //step backwards in coding order and include any extra available pictures we might find useful to replace the ones with POC < 0.
          Int offGOP = (checkGOP-1+offset)%m_iGOPSize;
          Int offPOC = ((checkGOP-1+offset)/m_iGOPSize)*m_iGOPSize + m_GOPList[offGOP].m_POC;
          if(offPOC>=0&&m_GOPList[offGOP].m_refPic&&m_GOPList[offGOP].m_temporalId<=m_GOPList[curGOP].m_temporalId) 
          {
            Bool newRef=false;
            for(Int i=0; i<numRefs; i++)
            {
              if(refList[i]==offPOC)
              {
                newRef=true;
              }
            }
            for(Int i=0; i<newRefs; i++) 
            {
              if(m_GOPList[m_iGOPSize+m_extraRPSs].m_referencePics[i]==offPOC-curPOC)
              {
                newRef=false;
              }
            }
            if(newRef) 
            {
              Int insertPoint=newRefs;
              //this picture can be added, find appropriate place in list and insert it.
              for(Int j=0; j<newRefs; j++)
              {
                if(m_GOPList[m_iGOPSize+m_extraRPSs].m_referencePics[j]<offPOC-curPOC||m_GOPList[m_iGOPSize+m_extraRPSs].m_referencePics[j]>0)
                {
                  insertPoint = j;
                  break;
                }
              }
              Int prev = offPOC-curPOC;
              Int prevUsed = m_GOPList[offGOP].m_temporalId<=m_GOPList[curGOP].m_temporalId;
              for(Int j=insertPoint; j<newRefs+1; j++)
              {
                Int newPrev = m_GOPList[m_iGOPSize+m_extraRPSs].m_referencePics[j];
                Int newUsed = m_GOPList[m_iGOPSize+m_extraRPSs].m_usedByCurrPic[j];
                m_GOPList[m_iGOPSize+m_extraRPSs].m_referencePics[j]=prev;
                m_GOPList[m_iGOPSize+m_extraRPSs].m_usedByCurrPic[j]=prevUsed;
                prevUsed=newUsed;
                prev=newPrev;
              }
              newRefs++;
            }
          }
          if(newRefs>=numPrefRefs)
          {
            break;
          }
        }
        m_GOPList[m_iGOPSize+m_extraRPSs].m_numRefPics=newRefs;
        m_GOPList[m_iGOPSize+m_extraRPSs].m_POC = curPOC;
        if (m_extraRPSs == 0)
        {
          m_GOPList[m_iGOPSize+m_extraRPSs].m_interRPSPrediction = 0;
          m_GOPList[m_iGOPSize+m_extraRPSs].m_numRefIdc = 0;
        }
        else
        {
          Int rIdx =  m_iGOPSize + m_extraRPSs - 1;
          Int refPOC = m_GOPList[rIdx].m_POC;
          Int refPics = m_GOPList[rIdx].m_numRefPics;
          Int newIdc=0;
          for(Int i = 0; i<= refPics; i++) 
          {
            Int deltaPOC = ((i != refPics)? m_GOPList[rIdx].m_referencePics[i] : 0);  // check if the reference abs POC is >= 0
            Int absPOCref = refPOC+deltaPOC;
            Int refIdc = 0;
            for (Int j = 0; j < m_GOPList[m_iGOPSize+m_extraRPSs].m_numRefPics; j++)
            {
              if ( (absPOCref - curPOC) == m_GOPList[m_iGOPSize+m_extraRPSs].m_referencePics[j])
              {
                if (m_GOPList[m_iGOPSize+m_extraRPSs].m_usedByCurrPic[j])
                {
                  refIdc = 1;
                }
                else
                {
                  refIdc = 2;
                }
              }
            }
            m_GOPList[m_iGOPSize+m_extraRPSs].m_refIdc[newIdc]=refIdc;
            newIdc++;
          }
          m_GOPList[m_iGOPSize+m_extraRPSs].m_interRPSPrediction = 1;  
          m_GOPList[m_iGOPSize+m_extraRPSs].m_numRefIdc = newIdc;
          m_GOPList[m_iGOPSize+m_extraRPSs].m_deltaRPS = refPOC - m_GOPList[m_iGOPSize+m_extraRPSs].m_POC; 
          m_GOPList[m_iGOPSize+m_extraRPSs].m_deltaRIdxMinus1 = 0; 
        }
        curGOP=m_iGOPSize+m_extraRPSs;
        m_extraRPSs++;
      }
      numRefs=0;
      for(Int i = 0; i< m_GOPList[curGOP].m_numRefPics; i++) 
      {
        Int absPOC = curPOC+m_GOPList[curGOP].m_referencePics[i];
        if(absPOC >= 0) 
        {
          refList[numRefs]=absPOC;
          numRefs++;
        }
      }
      refList[numRefs]=curPOC;
      numRefs++;
    }
    checkGOP++;
  }
  xConfirmPara(errorGOP,"Invalid GOP structure given");
  m_maxTempLayer = 1;
  for(Int i=0; i<m_iGOPSize; i++) 
  {
    if(m_GOPList[i].m_temporalId >= m_maxTempLayer)
    {
      m_maxTempLayer = m_GOPList[i].m_temporalId+1;
    }
    xConfirmPara(m_GOPList[i].m_sliceType!='B'&&m_GOPList[i].m_sliceType!='P', "Slice type must be equal to B or P");
  }
  for(Int i=0; i<MAX_TLAYER; i++)
  {
    m_numReorderPics[i] = 0;
    m_maxDecPicBuffering[i] = 0;
  }
  for(Int i=0; i<m_iGOPSize; i++) 
  {
    if(m_GOPList[i].m_numRefPics > m_maxDecPicBuffering[m_GOPList[i].m_temporalId])
    {
      m_maxDecPicBuffering[m_GOPList[i].m_temporalId] = m_GOPList[i].m_numRefPics;
    }
    Int highestDecodingNumberWithLowerPOC = 0; 
    for(Int j=0; j<m_iGOPSize; j++)
    {
      if(m_GOPList[j].m_POC <= m_GOPList[i].m_POC)
      {
        highestDecodingNumberWithLowerPOC = j;
      }
    }
    Int numReorder = 0;
    for(Int j=0; j<highestDecodingNumberWithLowerPOC; j++)
    {
      if(m_GOPList[j].m_temporalId <= m_GOPList[i].m_temporalId && 
        m_GOPList[j].m_POC > m_GOPList[i].m_POC)
      {
        numReorder++;
      }
    }    
    if(numReorder > m_numReorderPics[m_GOPList[i].m_temporalId])
    {
      m_numReorderPics[m_GOPList[i].m_temporalId] = numReorder;
    }
  }
  for(Int i=0; i<MAX_TLAYER-1; i++) 
  {
    // a lower layer can not have higher value of m_numReorderPics than a higher layer
    if(m_numReorderPics[i+1] < m_numReorderPics[i])
    {
      m_numReorderPics[i+1] = m_numReorderPics[i];
    }
    // the value of num_reorder_pics[ i ] shall be in the range of 0 to max_dec_pic_buffering[ i ], inclusive
    if(m_numReorderPics[i] > m_maxDecPicBuffering[i])
    {
      m_maxDecPicBuffering[i] = m_numReorderPics[i];
    }
    // a lower layer can not have higher value of m_uiMaxDecPicBuffering than a higher layer
    if(m_maxDecPicBuffering[i+1] < m_maxDecPicBuffering[i])
    {
      m_maxDecPicBuffering[i+1] = m_maxDecPicBuffering[i];
    }
  }
  // the value of num_reorder_pics[ i ] shall be in the range of 0 to max_dec_pic_buffering[ i ], inclusive
  if(m_numReorderPics[MAX_TLAYER-1] > m_maxDecPicBuffering[MAX_TLAYER-1])
  {
    m_maxDecPicBuffering[MAX_TLAYER-1] = m_numReorderPics[MAX_TLAYER-1];
  }

  xConfirmPara( m_bUseLComb==false && m_numReorderPics[MAX_TLAYER-1]!=0, "ListCombination can only be 0 in low delay coding (more precisely when L0 and L1 are identical)" );  // Note however this is not the full necessary condition as ref_pic_list_combination_flag can only be 0 if L0 == L1.
  xConfirmPara( m_iWaveFrontSynchro < 0, "WaveFrontSynchro cannot be negative" );
  xConfirmPara( m_iWaveFrontFlush < 0, "WaveFrontFlush cannot be negative" );
  xConfirmPara( m_iWaveFrontSubstreams <= 0, "WaveFrontSubstreams must be positive" );
  xConfirmPara( m_iWaveFrontSubstreams > 1 && !m_iWaveFrontSynchro, "Must have WaveFrontSynchro > 0 in order to have WaveFrontSubstreams > 1" );

#if HASH_TYPE
  xConfirmPara( m_pictureDigestEnabled<0 || m_pictureDigestEnabled>3, "this hash type is not correct!\n");
#endif

  if(m_enableRateCtrl)
  {
    Int numLCUInWidth  = (m_iSourceWidth  / m_uiMaxCUWidth) + (( m_iSourceWidth  %  m_uiMaxCUWidth ) ? 1 : 0);
    Int numLCUInHeight = (m_iSourceHeight / m_uiMaxCUHeight)+ (( m_iSourceHeight %  m_uiMaxCUHeight) ? 1 : 0);
    Int numLCUInPic    =  numLCUInWidth * numLCUInHeight;

    xConfirmPara( (numLCUInPic % m_numLCUInUnit) != 0, "total number of LCUs in a frame should be completely divided by NumLCUInUnit" );

    m_iMaxDeltaQP       = MAX_DELTA_QP;
    m_iMaxCuDQPDepth    = MAX_CUDQP_DEPTH;
  }

#if CU_LEVEL_TRANSQUANT_BYPASS
  xConfirmPara(!m_TransquantBypassEnableFlag && m_CUTransquantBypassFlagValue, "CUTransquantBypassFlagValue cannot be 1 when TransquantBypassEnableFlag is 0");
#endif

#undef xConfirmPara
  if (check_failed)
  {
    exit(EXIT_FAILURE);
  }
}

/** \todo use of global variables should be removed later
 */
Void TAppEncCfg::xSetGlobal()
{
  // set max CU width & height
  g_uiMaxCUWidth  = m_uiMaxCUWidth;
  g_uiMaxCUHeight = m_uiMaxCUHeight;
  
  // compute actual CU depth with respect to config depth and max transform size
  g_uiAddCUDepth  = 0;
  while( (m_uiMaxCUWidth>>m_uiMaxCUDepth) > ( 1 << ( m_uiQuadtreeTULog2MinSize + g_uiAddCUDepth )  ) ) g_uiAddCUDepth++;
  
  m_uiMaxCUDepth += g_uiAddCUDepth;
  g_uiAddCUDepth++;
  g_uiMaxCUDepth = m_uiMaxCUDepth;
  
  // set internal bit-depth and constants
#if FULL_NBIT
  g_uiBitDepth = m_uiInternalBitDepth;
  g_uiBitIncrement = 0;
#else
  g_uiBitDepth = 8;
  g_uiBitIncrement = m_uiInternalBitDepth - g_uiBitDepth;
#endif

  g_uiBASE_MAX     = ((1<<(g_uiBitDepth))-1);
  
#if IBDI_NOCLIP_RANGE
  g_uiIBDI_MAX     = g_uiBASE_MAX << g_uiBitIncrement;
#else
  g_uiIBDI_MAX     = ((1<<(g_uiBitDepth+g_uiBitIncrement))-1);
#endif
  
  if (m_uiOutputBitDepth == 0)
  {
    m_uiOutputBitDepth = m_uiInternalBitDepth;
  }

  g_uiPCMBitDepthLuma = m_uiPCMBitDepthLuma = ((m_bPCMInputBitDepthFlag)? m_uiInputBitDepth : m_uiInternalBitDepth);
  g_uiPCMBitDepthChroma = ((m_bPCMInputBitDepthFlag)? m_uiInputBitDepth : m_uiInternalBitDepth);
}

Void TAppEncCfg::xPrintParameter()
{
  printf("\n");
  printf("Input          File          : %s\n", m_pchInputFile          );
  printf("Bitstream      File          : %s\n", m_pchBitstreamFile      );
  printf("Reconstruction File          : %s\n", m_pchReconFile          );
  printf("Real     Format              : %dx%d %dHz\n", m_iSourceWidth - m_cropLeft - m_cropRight, m_iSourceHeight - m_cropTop - m_cropBottom, m_iFrameRate );
  printf("Internal Format              : %dx%d %dHz\n", m_iSourceWidth, m_iSourceHeight, m_iFrameRate );
  printf("Frame index                  : %u - %d (%d frames)\n", m_FrameSkip, m_FrameSkip+m_iFrameToBeEncoded-1, m_iFrameToBeEncoded );
  printf("CU size / depth              : %d / %d\n", m_uiMaxCUWidth, m_uiMaxCUDepth );
  printf("RQT trans. size (min / max)  : %d / %d\n", 1 << m_uiQuadtreeTULog2MinSize, 1 << m_uiQuadtreeTULog2MaxSize );
  printf("Max RQT depth inter          : %d\n", m_uiQuadtreeTUMaxDepthInter);
  printf("Max RQT depth intra          : %d\n", m_uiQuadtreeTUMaxDepthIntra);
  printf("Min PCM size                 : %d\n", 1 << m_uiPCMLog2MinSize);
  printf("Motion search range          : %d\n", m_iSearchRange );
  printf("Intra period                 : %d\n", m_iIntraPeriod );
  printf("Decoding refresh type        : %d\n", m_iDecodingRefreshType );
  printf("QP                           : %5.2f\n", m_fQP );
  printf("Max dQP signaling depth      : %d\n", m_iMaxCuDQPDepth);

  printf("Cb QP Offset                 : %d\n", m_cbQpOffset   );
  printf("Cr QP Offset                 : %d\n", m_crQpOffset);

  printf("QP adaptation                : %d (range=%d)\n", m_bUseAdaptiveQP, (m_bUseAdaptiveQP ? m_iQPAdaptationRange : 0) );
  printf("GOP size                     : %d\n", m_iGOPSize );
  printf("Internal bit depth           : %d\n", m_uiInternalBitDepth );
  printf("PCM sample bit depth         : %d\n", m_uiPCMBitDepthLuma );
#if !REMOVE_INTER_4X4
  if((m_uiMaxCUWidth >> m_uiMaxCUDepth) == 4)
  {
    printf("DisableInter4x4              : %d\n", m_bDisInter4x4);  
  }
#endif
  printf("RateControl                  : %d\n", m_enableRateCtrl);
  if(m_enableRateCtrl)
  {
    printf("TargetBitrate                : %d\n", m_targetBitrate);
    printf("NumLCUInUnit                 : %d\n", m_numLCUInUnit);
  }
  printf("\n");
  
  printf("TOOL CFG: ");
  printf("ALF:%d ", m_bUseALF             );
#if AHG6_ALF_OPTION2
  printf("ALFLowLatencyEncode:%d ", m_alfLowLatencyEncoding?1:0);
#else
  printf("ALFMNF:%d ", m_iALFMaxNumberFilters);
  printf("ALFInSlice:%d ", m_bALFParamInSlice);
  printf("ALFPicEnc:%d ", m_bALFPicBasedEncode);
#endif
  printf("IBD:%d ", !!g_uiBitIncrement);
  printf("HAD:%d ", m_bUseHADME           );
  printf("SRD:%d ", m_bUseSBACRD          );
  printf("RDQ:%d ", m_bUseRDOQ            );
  printf("SQP:%d ", m_uiDeltaQpRD         );
  printf("ASR:%d ", m_bUseASR             );
  printf("LComb:%d ", m_bUseLComb         );
#if !REMOVE_LC
  printf("LCMod:%d ", m_bLCMod         );
#endif
  printf("FEN:%d ", m_bUseFastEnc         );
  printf("ECU:%d ", m_bUseEarlyCU         );
  printf("FDM:%d ", m_useFastDecisionForMerge );
  printf("CFM:%d ", m_bUseCbfFastMode         );
  printf("ESD:%d ", m_useEarlySkipDetection  );
  printf("RQT:%d ", 1     );
  printf("LMC:%d ", m_bUseLMChroma        ); 
#if INTRA_TRANSFORMSKIP
  printf("TS:%d ",  m_useTansformSkip              ); 
  printf("TSFast:%d ", m_useTansformSkipFast       ); 
#endif
  printf("Slice: G=%d M=%d ", m_iSliceGranularity, m_iSliceMode);
  if (m_iSliceMode!=0)
  {
    printf("A=%d ", m_iSliceArgument);
  }
  printf("DependentSlice: M=%d ",m_iDependentSliceMode);
  if (m_iDependentSliceMode!=0)
  {
    printf("A=%d ", m_iDependentSliceArgument);
  }
  printf("CIP:%d ", m_bUseConstrainedIntraPred);
  printf("SAO:%d ", (m_bUseSAO)?(1):(0));
  printf("PCM:%d ", (m_usePCM && (1<<m_uiPCMLog2MinSize) <= m_uiMaxCUWidth)? 1 : 0);
#if SAO_REMOVE_APS // encoder renaming
  printf("SAOLcuBasedOptimization:%d ", (m_saoLcuBasedOptimization)?(1):(0));
#else
  printf("SAOInterleavingFlag:%d ", (m_saoInterleavingFlag)?(1):(0));
#endif

#if LOSSLESS_CODING
  printf("LosslessCuEnabled:%d ", (m_useLossless)? 1:0 );
#endif  
  printf("WPP:%d ", (Int)m_bUseWeightPred);
#if REMOVE_IMPLICIT_WP
  printf("WPB:%d ", (Int)m_useWeightedBiPred);
#else
  printf("WPB:%d ", m_uiBiPredIdc);
#endif
#if !EXPLICITLY_SIGNAL_ENTRY_POINTS
  printf("TileLocationInSliceHdr:%d ", m_iTileLocationInSliceHeaderFlag);
#endif
#if !REMOVE_TILE_MARKERS
  printf("TileMarker:%d", m_iTileMarkerFlag);
  if (m_iTileMarkerFlag)
  {
    printf("[%d] ", m_iMaxTileMarkerEntryPoints);
  }
  else
  {
    printf(" ");
  }
#endif
  printf(" WaveFrontSynchro:%d WaveFrontFlush:%d WaveFrontSubstreams:%d",
          m_iWaveFrontSynchro, m_iWaveFrontFlush, m_iWaveFrontSubstreams);
  printf(" ScalingList:%d ", m_useScalingListId );
#if SLICE_TMVP_ENABLE
  printf("TMVPMode:%d ", m_TMVPModeId     );
#else
  printf("TMVP:%d ", m_enableTMVP     );
#endif
#if ADAPTIVE_QP_SELECTION
  printf("AQpS:%d", m_bUseAdaptQpSelect   );
#endif

#if  FIXED_SBH_THRESHOLD
  printf(" SignBitHidingFlag:%d ", m_signHideFlag);
#else
  printf(" SignBitHidingFlag:%d SignBitHidingThreshold:%d", m_signHideFlag, m_signHidingThreshold);
#endif
  printf("\n\n");
  
  fflush(stdout);
}

Void TAppEncCfg::xPrintUsage()
{
  printf( "          <name> = ALF - adaptive loop filter\n");
  printf( "                   IBD - bit-depth increasement\n");
  printf( "                   GPB - generalized B instead of P in low-delay mode\n");
  printf( "                   HAD - hadamard ME for fractional-pel\n");
  printf( "                   SRD - SBAC based RD estimation\n");
  printf( "                   RDQ - RDOQ\n");
  printf( "                   LDC - low-delay mode\n");
  printf( "                   NRF - non-reference frame marking in last layer\n");
  printf( "                   BQP - hier-P style QP assignment in low-delay mode\n");
  printf( "                   PAD - automatic source padding of multiple of 16\n");
  printf( "                   ASR - adaptive motion search range\n");
  printf( "                   FEN - fast encoder setting\n");  
  printf( "                   ECU - Early CU setting\n");
  printf( "                   CFM - Cbf fast mode setting\n");
  printf( "                   ESD - Early SKIP detection setting\n");
  printf( "                   LMC - intra chroma prediction based on luma\n");
  printf( "\n" );
  printf( "  Example 1) TAppEncoder.exe -c test.cfg -q 32 -g 8 -f 9 -s 64 -h 4\n");
  printf("              -> QP 32, hierarchical-B GOP 8, 9 frames, 64x64-8x8 CU (~4x4 PU)\n\n");
  printf( "  Example 2) TAppEncoder.exe -c test.cfg -q 32 -g 4 -f 9 -s 64 -h 4 -1 LDC\n");
  printf("              -> QP 32, hierarchical-P GOP 4, 9 frames, 64x64-8x8 CU (~4x4 PU)\n\n");
}

Bool confirmPara(Bool bflag, const char* message)
{
  if (!bflag)
    return false;
  
  printf("Error: %s\n",message);
  return true;
}

/* helper function */
/* for handling "-1/-0 FOO" */
void translateOldStyleCmdline(const char* value, po::Options& opts, const std::string& arg)
{
  const char* argv[] = {arg.c_str(), value};
  /* replace some short names with their long name varients */
  if (arg == "LDC")
  {
    argv[0] = "LowDelayCoding";
  }
  else if (arg == "RDQ")
  {
    argv[0] = "RDOQ";
  }
  else if (arg == "HAD")
  {
    argv[0] = "HadamardME";
  }
  else if (arg == "SRD")
  {
    argv[0] = "SBACRD";
  }
  else if (arg == "IBD")
  {
    argv[0] = "BitIncrement";
  }
  /* issue a warning for change in FEN behaviour */
  if (arg == "FEN")
  {
    /* xxx todo */
  }
  po::storePair(opts, argv[0], argv[1]);
}

void doOldStyleCmdlineOn(po::Options& opts, const std::string& arg)
{
  if (arg == "IBD")
  {
    translateOldStyleCmdline("4", opts, arg);
    return;
  }
  translateOldStyleCmdline("1", opts, arg);
}

void doOldStyleCmdlineOff(po::Options& opts, const std::string& arg)
{
  translateOldStyleCmdline("0", opts, arg);
}

//! \}
