/* 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) 2010-2013, 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
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

/** \file     TAppEncTop.cpp
    \brief    Encoder application class
*/

#include <list>
#include <fstream>
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <assert.h>
#include <iomanip>

#include "TAppEncTop.h"
#include "TLibEncoder/AnnexBwrite.h"

using namespace std;

//! \ingroup TAppEncoder
//! \{

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

TAppEncTop::TAppEncTop()
{
  m_iFrameRcvd = 0;
  m_totalBytes = 0;
  m_essentialBytes = 0;
}

TAppEncTop::~TAppEncTop()
{
}

Void TAppEncTop::xInitLibCfg()
{
  TComVPS vps;
  
  vps.setMaxTLayers                       ( m_maxTempLayer );
  if (m_maxTempLayer == 1)
  {
    vps.setTemporalNestingFlag(true);
  }
  vps.setMaxLayers                        ( 1 );
  for(Int i = 0; i < MAX_TLAYER; i++)
  {
    vps.setNumReorderPics                 ( m_numReorderPics[i], i );
    vps.setMaxDecPicBuffering             ( m_maxDecPicBuffering[i], i );
  }
  m_cTEncTop.setVPS(&vps);

  m_cTEncTop.setProfile(m_profile);
  m_cTEncTop.setLevel(m_levelTier, m_level);
#if L0046_CONSTRAINT_FLAGS
  m_cTEncTop.setProgressiveSourceFlag(m_progressiveSourceFlag);
  m_cTEncTop.setInterlacedSourceFlag(m_interlacedSourceFlag);
  m_cTEncTop.setNonPackedConstraintFlag(m_nonPackedConstraintFlag);
  m_cTEncTop.setFrameOnlyConstraintFlag(m_frameOnlyConstraintFlag);
#endif

  m_cTEncTop.setFrameRate                    ( m_iFrameRate );
  m_cTEncTop.setFrameSkip                    ( m_FrameSkip );
  m_cTEncTop.setSourceWidth                  ( m_iSourceWidth );
  m_cTEncTop.setSourceHeight                 ( m_iSourceHeight );
  m_cTEncTop.setConformanceWindow            ( m_confLeft, m_confRight, m_confTop, m_confBottom );
  m_cTEncTop.setFramesToBeEncoded            ( m_framesToBeEncoded );
  
  //====== Coding Structure ========
  m_cTEncTop.setIntraPeriod                  ( m_iIntraPeriod );
  m_cTEncTop.setDecodingRefreshType          ( m_iDecodingRefreshType );
  m_cTEncTop.setGOPSize                      ( m_iGOPSize );
  m_cTEncTop.setGopList                      ( m_GOPList );
  m_cTEncTop.setExtraRPSs                    ( m_extraRPSs );
  for(Int i = 0; i < MAX_TLAYER; i++)
  {
    m_cTEncTop.setNumReorderPics             ( m_numReorderPics[i], i );
    m_cTEncTop.setMaxDecPicBuffering         ( m_maxDecPicBuffering[i], i );
  }
  for( UInt uiLoop = 0; uiLoop < MAX_TLAYER; ++uiLoop )
  {
    m_cTEncTop.setLambdaModifier( uiLoop, m_adLambdaModifier[ uiLoop ] );
  }
  m_cTEncTop.setQP                           ( m_iQP );
  
  m_cTEncTop.setPad                          ( m_aiPad );
    
  m_cTEncTop.setMaxTempLayer                 ( m_maxTempLayer );
  m_cTEncTop.setUseAMP( m_enableAMP );
  
  //===== Slice ========
  
  //====== Loop/Deblock Filter ========
  m_cTEncTop.setLoopFilterDisable            ( m_bLoopFilterDisable       );
  m_cTEncTop.setLoopFilterOffsetInPPS        ( m_loopFilterOffsetInPPS );
  m_cTEncTop.setLoopFilterBetaOffset         ( m_loopFilterBetaOffsetDiv2  );
  m_cTEncTop.setLoopFilterTcOffset           ( m_loopFilterTcOffsetDiv2    );
  m_cTEncTop.setDeblockingFilterControlPresent( m_DeblockingFilterControlPresent);

  //====== Motion search ========
  m_cTEncTop.setFastSearch                   ( m_iFastSearch  );
  m_cTEncTop.setSearchRange                  ( m_iSearchRange );
  m_cTEncTop.setBipredSearchRange            ( m_bipredSearchRange );

  //====== Quality control ========
  m_cTEncTop.setMaxDeltaQP                   ( m_iMaxDeltaQP  );
  m_cTEncTop.setMaxCuDQPDepth                ( m_iMaxCuDQPDepth  );

  m_cTEncTop.setChromaCbQpOffset             ( m_cbQpOffset     );
  m_cTEncTop.setChromaCrQpOffset             ( m_crQpOffset  );

  m_cTEncTop.setChromaFormatIdc              ( m_chromaFormatIDC  );
#if CANON_CHRQP_NEW_SE
  m_cTEncTop.setChroma420NotUsedFlag         ( m_chroma420NotUsedFlag  );
  printf("\n          m_cTEncTop.getChroma420NotUsedFlag %d\n",m_chroma420NotUsedFlag);
#endif

#if ADAPTIVE_QP_SELECTION
  m_cTEncTop.setUseAdaptQpSelect             ( m_bUseAdaptQpSelect   );
#endif

  Int lowestQP;
  lowestQP =  - 6*(g_bitDepth[CHANNEL_TYPE_LUMA] - 8); // XXX: check

#if RExt__BACKWARDS_COMPATIBILITY_HM_TRANSQUANTBYPASS
  if ((m_iMaxDeltaQP == 0 ) && (m_iQP == lowestQP) && (m_useLossless == true))
  {
    m_bUseAdaptiveQP = false;
  }
#endif
  m_cTEncTop.setUseAdaptiveQP                ( m_bUseAdaptiveQP  );
  m_cTEncTop.setQPAdaptationRange            ( m_iQPAdaptationRange );
  
  //====== Tool list ========
  m_cTEncTop.setUseSBACRD                    ( m_bUseSBACRD   );
  m_cTEncTop.setDeltaQpRD                    ( m_uiDeltaQpRD  );
  m_cTEncTop.setUseASR                       ( m_bUseASR      );
  m_cTEncTop.setUseHADME                     ( m_bUseHADME    );
#if RExt__BACKWARDS_COMPATIBILITY_HM_TRANSQUANTBYPASS
  m_cTEncTop.setUseLossless                  ( m_useLossless );
#endif
  m_cTEncTop.setUseLComb                     ( m_bUseLComb    );
  m_cTEncTop.setdQPs                         ( m_aidQP        );
  m_cTEncTop.setUseRDOQ                      ( m_useRDOQ     );
  m_cTEncTop.setUseRDOQTS                    ( m_useRDOQTS   );
#if L0232_RD_PENALTY
  m_cTEncTop.setRDpenalty                    ( m_rdPenalty );
#endif
  m_cTEncTop.setQuadtreeTULog2MaxSize        ( m_uiQuadtreeTULog2MaxSize );
  m_cTEncTop.setQuadtreeTULog2MinSize        ( m_uiQuadtreeTULog2MinSize );
  m_cTEncTop.setQuadtreeTUMaxDepthInter      ( m_uiQuadtreeTUMaxDepthInter );
  m_cTEncTop.setQuadtreeTUMaxDepthIntra      ( m_uiQuadtreeTUMaxDepthIntra );
  m_cTEncTop.setUseFastEnc                   ( m_bUseFastEnc  );
  m_cTEncTop.setUseEarlyCU                   ( m_bUseEarlyCU  ); 
  m_cTEncTop.setUseFastDecisionForMerge      ( m_useFastDecisionForMerge  );
  m_cTEncTop.setUseCbfFastMode            ( m_bUseCbfFastMode  );
  m_cTEncTop.setUseEarlySkipDetection            ( m_useEarlySkipDetection );

  m_cTEncTop.setUseTransformSkip             ( m_useTransformSkip      );
  m_cTEncTop.setUseTransformSkipFast         ( m_useTransformSkipFast  );
  m_cTEncTop.setUseConstrainedIntraPred      ( m_bUseConstrainedIntraPred );
  m_cTEncTop.setPCMLog2MinSize          ( m_uiPCMLog2MinSize);
  m_cTEncTop.setUsePCM                       ( m_usePCM );
  m_cTEncTop.setPCMLog2MaxSize               ( m_pcmLog2MaxSize);
  m_cTEncTop.setMaxNumMergeCand              ( m_maxNumMergeCand );
  

  //====== Weighted Prediction ========
  m_cTEncTop.setUseWP                   ( m_useWeightedPred      );
  m_cTEncTop.setWPBiPred                ( m_useWeightedBiPred   );
  //====== Parallel Merge Estimation ========
  m_cTEncTop.setLog2ParallelMergeLevelMinus2 ( m_log2ParallelMergeLevel - 2 );

  //====== Slice ========
  m_cTEncTop.setSliceMode               ( m_sliceMode                );
  m_cTEncTop.setSliceArgument           ( m_sliceArgument            );

  //====== Dependent Slice ========
  m_cTEncTop.setSliceSegmentMode        ( m_sliceSegmentMode         );
  m_cTEncTop.setSliceSegmentArgument    ( m_sliceSegmentArgument     );
  Int iNumPartInCU = 1<<(m_uiMaxCUDepth<<1);
  if(m_sliceSegmentMode==FIXED_NUMBER_OF_LCU)
  {
    m_cTEncTop.setSliceSegmentArgument ( m_sliceSegmentArgument * iNumPartInCU );
  }
  if(m_sliceMode==FIXED_NUMBER_OF_LCU)
  {
    m_cTEncTop.setSliceArgument ( m_sliceArgument * iNumPartInCU );
  }
  if(m_sliceMode==FIXED_NUMBER_OF_TILES)
  {
    m_cTEncTop.setSliceArgument ( m_sliceArgument );
  }
  
  if(m_sliceMode == 0 )
  {
    m_bLFCrossSliceBoundaryFlag = true;
  }
  m_cTEncTop.setLFCrossSliceBoundaryFlag( m_bLFCrossSliceBoundaryFlag );
  m_cTEncTop.setUseSAO ( m_bUseSAO );
  m_cTEncTop.setMaxNumOffsetsPerPic (m_maxNumOffsetsPerPic);

  m_cTEncTop.setSaoLcuBoundary (m_saoLcuBoundary);
  m_cTEncTop.setSaoLcuBasedOptimization (m_saoLcuBasedOptimization);
  m_cTEncTop.setPCMInputBitDepthFlag  ( m_bPCMInputBitDepthFlag); 
  m_cTEncTop.setPCMFilterDisableFlag  ( m_bPCMFilterDisableFlag); 

  m_cTEncTop.setDecodedPictureHashSEIEnabled(m_decodedPictureHashSEIEnabled);
  m_cTEncTop.setRecoveryPointSEIEnabled( m_recoveryPointSEIEnabled );
  m_cTEncTop.setBufferingPeriodSEIEnabled( m_bufferingPeriodSEIEnabled );
  m_cTEncTop.setPictureTimingSEIEnabled( m_pictureTimingSEIEnabled );
  m_cTEncTop.setFramePackingArrangementSEIEnabled( m_framePackingSEIEnabled );
  m_cTEncTop.setFramePackingArrangementSEIType( m_framePackingSEIType );
  m_cTEncTop.setFramePackingArrangementSEIId( m_framePackingSEIId );
  m_cTEncTop.setFramePackingArrangementSEIQuincunx( m_framePackingSEIQuincunx );
  m_cTEncTop.setFramePackingArrangementSEIInterpretation( m_framePackingSEIInterpretation );
  m_cTEncTop.setDisplayOrientationSEIAngle( m_displayOrientationSEIAngle );
  m_cTEncTop.setTemporalLevel0IndexSEIEnabled( m_temporalLevel0IndexSEIEnabled );
  m_cTEncTop.setGradualDecodingRefreshInfoEnabled( m_gradualDecodingRefreshInfoEnabled );
  m_cTEncTop.setDecodingUnitInfoSEIEnabled( m_decodingUnitInfoSEIEnabled );
  m_cTEncTop.setUniformSpacingIdr          ( m_iUniformSpacingIdr );
  m_cTEncTop.setNumColumnsMinus1           ( m_iNumColumnsMinus1 );
  m_cTEncTop.setNumRowsMinus1              ( m_iNumRowsMinus1 );
  if(m_iUniformSpacingIdr==0)
  {
    m_cTEncTop.setColumnWidth              ( m_pColumnWidth );
    m_cTEncTop.setRowHeight                ( m_pRowHeight );
  }
  m_cTEncTop.xCheckGSParameters();
  Int uiTilesCount          = (m_iNumRowsMinus1+1) * (m_iNumColumnsMinus1+1);
  if(uiTilesCount == 1)
  {
    m_bLFCrossTileBoundaryFlag = true; 
  }
  m_cTEncTop.setLFCrossTileBoundaryFlag( m_bLFCrossTileBoundaryFlag );
  m_cTEncTop.setWaveFrontSynchro           ( m_iWaveFrontSynchro );
  m_cTEncTop.setWaveFrontSubstreams        ( m_iWaveFrontSubstreams );
  m_cTEncTop.setTMVPModeId ( m_TMVPModeId );
  m_cTEncTop.setUseScalingListId           ( m_useScalingListId  );
  m_cTEncTop.setScalingListFile            ( m_scalingListFile   );
  m_cTEncTop.setSignHideFlag(m_signHideFlag);
#if RATE_CONTROL_LAMBDA_DOMAIN
  m_cTEncTop.setUseRateCtrl         ( m_RCEnableRateControl );
  m_cTEncTop.setTargetBitrate       ( m_RCTargetBitrate );
  m_cTEncTop.setKeepHierBit         ( m_RCKeepHierarchicalBit );
  m_cTEncTop.setLCULevelRC          ( m_RCLCULevelRC );
  m_cTEncTop.setUseLCUSeparateModel ( m_RCUseLCUSeparateModel );
  m_cTEncTop.setInitialQP           ( m_RCInitialQP );
  m_cTEncTop.setForceIntraQP        ( m_RCForceIntraQP );
#else
  m_cTEncTop.setUseRateCtrl     ( m_enableRateCtrl);
  m_cTEncTop.setTargetBitrate   ( m_targetBitrate);
  m_cTEncTop.setNumLCUInUnit    ( m_numLCUInUnit);
#endif
  m_cTEncTop.setTransquantBypassEnableFlag(m_TransquantBypassEnableFlag);
#if RExt__BACKWARDS_COMPATIBILITY_HM_TRANSQUANTBYPASS
  m_cTEncTop.setCUTransquantBypassFlagValue(m_CUTransquantBypassFlagValue);
#else
  m_cTEncTop.setCUTransquantBypassFlagForceValue(m_CUTransquantBypassFlagForce);
#endif
  m_cTEncTop.setUseRecalculateQPAccordingToLambda( m_recalculateQPAccordingToLambda );
  m_cTEncTop.setUseStrongIntraSmoothing( m_useStrongIntraSmoothing );
  m_cTEncTop.setActiveParameterSetsSEIEnabled ( m_activeParameterSetsSEIEnabled ); 
  m_cTEncTop.setVuiParametersPresentFlag( m_vuiParametersPresentFlag );
  m_cTEncTop.setAspectRatioIdc( m_aspectRatioIdc );
  m_cTEncTop.setSarWidth( m_sarWidth );
  m_cTEncTop.setSarHeight( m_sarHeight );
  m_cTEncTop.setOverscanInfoPresentFlag( m_overscanInfoPresentFlag );
  m_cTEncTop.setOverscanAppropriateFlag( m_overscanAppropriateFlag );
  m_cTEncTop.setVideoSignalTypePresentFlag( m_videoSignalTypePresentFlag );
  m_cTEncTop.setVideoFormat( m_videoFormat );
  m_cTEncTop.setVideoFullRangeFlag( m_videoFullRangeFlag );
  m_cTEncTop.setColourDescriptionPresentFlag( m_colourDescriptionPresentFlag );
  m_cTEncTop.setColourPrimaries( m_colourPrimaries );
  m_cTEncTop.setTransferCharacteristics( m_transferCharacteristics );
  m_cTEncTop.setMatrixCoefficients( m_matrixCoefficients );
  m_cTEncTop.setChromaLocInfoPresentFlag( m_chromaLocInfoPresentFlag );
  m_cTEncTop.setChromaSampleLocTypeTopField( m_chromaSampleLocTypeTopField );
  m_cTEncTop.setChromaSampleLocTypeBottomField( m_chromaSampleLocTypeBottomField );
  m_cTEncTop.setNeutralChromaIndicationFlag( m_neutralChromaIndicationFlag );
  m_cTEncTop.setDefaultDisplayWindow( m_defDispWinLeftOffset, m_defDispWinRightOffset, m_defDispWinTopOffset, m_defDispWinBottomOffset );
  m_cTEncTop.setFrameFieldInfoPresentFlag( m_frameFieldInfoPresentFlag );
  m_cTEncTop.setPocProportionalToTimingFlag( m_pocProportionalToTimingFlag );
  m_cTEncTop.setNumTicksPocDiffOneMinus1   ( m_numTicksPocDiffOneMinus1    );
  m_cTEncTop.setBitstreamRestrictionFlag( m_bitstreamRestrictionFlag );
  m_cTEncTop.setTilesFixedStructureFlag( m_tilesFixedStructureFlag );
  m_cTEncTop.setMotionVectorsOverPicBoundariesFlag( m_motionVectorsOverPicBoundariesFlag );
  m_cTEncTop.setMinSpatialSegmentationIdc( m_minSpatialSegmentationIdc );
  m_cTEncTop.setMaxBytesPerPicDenom( m_maxBytesPerPicDenom );
  m_cTEncTop.setMaxBitsPerMinCuDenom( m_maxBitsPerMinCuDenom );
  m_cTEncTop.setLog2MaxMvLengthHorizontal( m_log2MaxMvLengthHorizontal );
  m_cTEncTop.setLog2MaxMvLengthVertical( m_log2MaxMvLengthVertical );
#if SIGNAL_BITRATE_PICRATE_IN_VPS
  TComBitRatePicRateInfo *bitRatePicRateInfo = m_cTEncTop.getVPS()->getBitratePicrateInfo();
  // The number of bit rate/pic rate have to equal to number of sub-layers.
  if(m_bitRatePicRateMaxTLayers)
  {
    assert(m_bitRatePicRateMaxTLayers == m_cTEncTop.getVPS()->getMaxTLayers());
  }
  for(Int i = 0; i < m_bitRatePicRateMaxTLayers; i++)
  {
    bitRatePicRateInfo->setBitRateInfoPresentFlag( i, m_bitRateInfoPresentFlag[i] );
    if( bitRatePicRateInfo->getBitRateInfoPresentFlag(i) )
    {
      bitRatePicRateInfo->setAvgBitRate(i, m_avgBitRate[i]);
      bitRatePicRateInfo->setMaxBitRate(i, m_maxBitRate[i]);
    }
  }
  for(Int i = 0; i < m_bitRatePicRateMaxTLayers; i++)
  {
    bitRatePicRateInfo->setPicRateInfoPresentFlag( i, m_picRateInfoPresentFlag[i] );
    if( bitRatePicRateInfo->getPicRateInfoPresentFlag(i) )
    {
      bitRatePicRateInfo->setAvgPicRate     (i, m_avgPicRate[i]);
      bitRatePicRateInfo->setConstantPicRateIdc(i, m_constantPicRateIdc[i]);
    }
  }
#endif
}

Void TAppEncTop::xCreateLib()
{
  // Video I/O
  m_cTVideoIOYuvInputFile.open( m_pchInputFile,     false, m_inputBitDepth, m_internalBitDepth );  // read  mode
  m_cTVideoIOYuvInputFile.skipFrames(m_FrameSkip, m_iSourceWidth - m_aiPad[0], m_iSourceHeight - m_aiPad[1], m_InputChromaFormatIDC);

  if (m_pchReconFile)
    m_cTVideoIOYuvReconFile.open(m_pchReconFile, true, m_outputBitDepth, m_internalBitDepth);  // write mode
  
  // Neo Decoder
  m_cTEncTop.create();
}

Void TAppEncTop::xDestroyLib()
{
  // Video I/O
  m_cTVideoIOYuvInputFile.close();
  m_cTVideoIOYuvReconFile.close();
  
  // Neo Decoder
  m_cTEncTop.destroy();
}

Void TAppEncTop::xInitLib()
{
  m_cTEncTop.init();
}

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

/**
 - create internal class
 - initialize internal variable
 - until the end of input YUV file, call encoding function in TEncTop class
 - delete allocated buffers
 - destroy internal class
 .
 */
Void TAppEncTop::encode()
{
  fstream bitstreamFile(m_pchBitstreamFile, fstream::binary | fstream::out);
  if (!bitstreamFile)
  {
    fprintf(stderr, "\nfailed to open bitstream file `%s' for writing\n", m_pchBitstreamFile);
    exit(EXIT_FAILURE);
  }

  TComPicYuv*       pcPicYuvOrg = new TComPicYuv;
  TComPicYuv*       pcPicYuvRec = NULL;
  
  // initialize internal class & member variables
  xInitLibCfg();
  xCreateLib();
  xInitLib();

  printChromaFormat();
  
  // main encoder loop
  Int   iNumEncoded = 0;
  Bool  bEos = false;

#if RExt__COLOUR_SPACE_CONVERSIONS
  const InputColourSpaceConversion ipCSC  =  m_inputColourSpaceConvert;
  const InputColourSpaceConversion snrCSC = (!m_snrInternalColourSpace) ? m_inputColourSpaceConvert : IPCOLOURSPACE_UNCHANGED;
#else
  const Bool RGBChannelOrder = m_vuiParametersPresentFlag && (m_matrixCoefficients == MATRIX_COEFFICIENTS_RGB_VALUE);
#endif
  
  list<AccessUnit> outputAccessUnits; ///< list of access units to write out.  is populated by the encoding process

  // allocate original YUV buffer
  pcPicYuvOrg->create( m_iSourceWidth, m_iSourceHeight, m_chromaFormatIDC, m_uiMaxCUWidth, m_uiMaxCUHeight, m_uiMaxCUDepth );
#if RExt__COLOUR_SPACE_CONVERSIONS
  TComPicYuv cPicYuvTrueOrg;
  cPicYuvTrueOrg.create(m_iSourceWidth, m_iSourceHeight, m_chromaFormatIDC, m_uiMaxCUWidth, m_uiMaxCUHeight, m_uiMaxCUDepth);
#endif
  
  while ( !bEos )
  {
    // get buffers
    xGetBuffer(pcPicYuvRec);

    // read input YUV file
#if RExt__COLOUR_SPACE_CONVERSIONS
    m_cTVideoIOYuvInputFile.read( pcPicYuvOrg, &cPicYuvTrueOrg, ipCSC, m_aiPad, m_InputChromaFormatIDC );
#else
    m_cTVideoIOYuvInputFile.read( pcPicYuvOrg, RGBChannelOrder, m_aiPad, m_InputChromaFormatIDC );
#endif
    
    // increase number of received frames
    m_iFrameRcvd++;
    
    bEos = (m_iFrameRcvd == m_framesToBeEncoded);

    Bool flush = 0;
    // if end of file (which is only detected on a read failure) flush the encoder of any queued pictures
    if (m_cTVideoIOYuvInputFile.isEof())
    {
      flush = true;
      bEos = true;
      m_iFrameRcvd--;
      m_cTEncTop.setFramesToBeEncoded(m_iFrameRcvd);
    }

    // call encoding function for one frame
#if RExt__COLOUR_SPACE_CONVERSIONS
    m_cTEncTop.encode( bEos, flush ? 0 : pcPicYuvOrg, flush ? 0 : &cPicYuvTrueOrg, snrCSC, m_cListPicYuvRec, outputAccessUnits, iNumEncoded );
#else
    m_cTEncTop.encode( bEos, flush ? 0 : pcPicYuvOrg, m_cListPicYuvRec, outputAccessUnits, iNumEncoded );
#endif
    
    // write bistream to file if necessary
    if ( iNumEncoded > 0 )
    {
      xWriteOutput(bitstreamFile, iNumEncoded, outputAccessUnits);
      outputAccessUnits.clear();
    }
  }

  m_cTEncTop.printSummary();

  // delete original YUV buffer
  pcPicYuvOrg->destroy();
  delete pcPicYuvOrg;
  pcPicYuvOrg = NULL;
  
  // delete used buffers in encoder class
  m_cTEncTop.deletePicBuffer();
#if RExt__COLOUR_SPACE_CONVERSIONS
  cPicYuvTrueOrg.destroy();
#endif
  
  // delete buffers & classes
  xDeleteBuffer();
  xDestroyLib();
  
  printRateSummary();

  return;
}

// ====================================================================================================================
// Protected member functions
// ====================================================================================================================

/**
 - application has picture buffer list with size of GOP
 - picture buffer list acts as ring buffer
 - end of the list has the latest picture
 .
 */
Void TAppEncTop::xGetBuffer( TComPicYuv*& rpcPicYuvRec)
{
  assert( m_iGOPSize > 0 );
  
  // org. buffer
  if ( m_cListPicYuvRec.size() == (UInt)m_iGOPSize )
  {
    rpcPicYuvRec = m_cListPicYuvRec.popFront();

  }
  else
  {
    rpcPicYuvRec = new TComPicYuv;
    
    rpcPicYuvRec->create( m_iSourceWidth, m_iSourceHeight, m_chromaFormatIDC, m_uiMaxCUWidth, m_uiMaxCUHeight, m_uiMaxCUDepth );

  }
  m_cListPicYuvRec.pushBack( rpcPicYuvRec );
}

Void TAppEncTop::xDeleteBuffer( )
{
  TComList<TComPicYuv*>::iterator iterPicYuvRec  = m_cListPicYuvRec.begin();
  
  Int iSize = Int( m_cListPicYuvRec.size() );
  
  for ( Int i = 0; i < iSize; i++ )
  {
    TComPicYuv*  pcPicYuvRec  = *(iterPicYuvRec++);
    pcPicYuvRec->destroy();
    delete pcPicYuvRec; pcPicYuvRec = NULL;
  }
  
}

/** \param iNumEncoded  number of encoded frames
 */
Void TAppEncTop::xWriteOutput(std::ostream& bitstreamFile, Int iNumEncoded, const std::list<AccessUnit>& accessUnits)
{
  Int i;
  
  TComList<TComPicYuv*>::iterator iterPicYuvRec = m_cListPicYuvRec.end();
  list<AccessUnit>::const_iterator iterBitstream = accessUnits.begin();


#if RExt__COLOUR_SPACE_CONVERSIONS
  const InputColourSpaceConversion ipCSC = (!m_outputInternalColourSpace) ? m_inputColourSpaceConvert : IPCOLOURSPACE_UNCHANGED;
#else
  const Bool RGBChannelOrder = m_vuiParametersPresentFlag && (m_matrixCoefficients == MATRIX_COEFFICIENTS_RGB_VALUE);
#endif

  
  for ( i = 0; i < iNumEncoded; i++ )
  {
    --iterPicYuvRec;
  }
  
  for ( i = 0; i < iNumEncoded; i++ )
  {
    TComPicYuv*  pcPicYuvRec  = *(iterPicYuvRec++);
    if (m_pchReconFile)
    {
#if RExt__COLOUR_SPACE_CONVERSIONS
      m_cTVideoIOYuvReconFile.write( pcPicYuvRec, ipCSC, m_confLeft, m_confRight, m_confTop, m_confBottom );
#else
      m_cTVideoIOYuvReconFile.write( pcPicYuvRec, RGBChannelOrder, m_confLeft, m_confRight, m_confTop, m_confBottom );
#endif
    }

    const AccessUnit& au = *(iterBitstream++);
    const vector<UInt>& stats = writeAnnexB(bitstreamFile, au);
    rateStatsAccum(au, stats);
  }
}

/**
 *
 */
void TAppEncTop::rateStatsAccum(const AccessUnit& au, const std::vector<UInt>& annexBsizes)
{
  AccessUnit::const_iterator it_au = au.begin();
  vector<UInt>::const_iterator it_stats = annexBsizes.begin();

  for (; it_au != au.end(); it_au++, it_stats++)
  {
    switch ((*it_au)->m_nalUnitType)
    {
    case NAL_UNIT_CODED_SLICE_TRAIL_R:
    case NAL_UNIT_CODED_SLICE_TRAIL_N:
    case NAL_UNIT_CODED_SLICE_TLA:
    case NAL_UNIT_CODED_SLICE_TSA_N:
    case NAL_UNIT_CODED_SLICE_STSA_R:
    case NAL_UNIT_CODED_SLICE_STSA_N:
    case NAL_UNIT_CODED_SLICE_BLA:
    case NAL_UNIT_CODED_SLICE_BLANT:
    case NAL_UNIT_CODED_SLICE_BLA_N_LP:
    case NAL_UNIT_CODED_SLICE_IDR:
    case NAL_UNIT_CODED_SLICE_IDR_N_LP:
    case NAL_UNIT_CODED_SLICE_CRA:
    case NAL_UNIT_CODED_SLICE_RADL_N:
    case NAL_UNIT_CODED_SLICE_DLP:
    case NAL_UNIT_CODED_SLICE_RASL_N:
    case NAL_UNIT_CODED_SLICE_TFD:
    case NAL_UNIT_VPS:
    case NAL_UNIT_SPS:
    case NAL_UNIT_PPS:
      m_essentialBytes += *it_stats;
      break;
    default:
      break;
    }

    m_totalBytes += *it_stats;
  }
}

void TAppEncTop::printRateSummary()
{
  Double time = (Double) m_iFrameRcvd / m_iFrameRate;
  printf("Bytes written to file: %u (%.3f kbps)\n", m_totalBytes, 0.008 * m_totalBytes / time);
#if VERBOSE_RATE
  printf("Bytes for SPS/PPS/Slice (Incl. Annex B): %u (%.3f kbps)\n", m_essentialBytes, 0.008 * m_essentialBytes / time);
#endif
}

void TAppEncTop::printChromaFormat()
{
  std::cout << std::setw(43) << "Input ChromaFormatIDC = ";
  switch (m_InputChromaFormatIDC)
  {
  case CHROMA_400:  std::cout << "  4:0:0"; break;
  case CHROMA_420:  std::cout << "  4:2:0"; break;
  case CHROMA_422:  std::cout << "  4:2:2"; break;
  case CHROMA_444:  std::cout << "  4:4:4"; break;
  default:
    std::cerr << "Invalid";
    exit(1);
  }
  std::cout << std::endl;

  std::cout << std::setw(43) << "Output (internal) ChromaFormatIDC = ";
  switch (m_cTEncTop.getChromaFormatIdc())
  {
  case CHROMA_400:  std::cout << "  4:0:0"; break;
  case CHROMA_420:  std::cout << "  4:2:0"; break;
  case CHROMA_422:  std::cout << "  4:2:2"; break;
  case CHROMA_444:  std::cout << "  4:4:4"; break;
  default:
    std::cerr << "Invalid";
    exit(1);
  }
  std::cout << "\n" << std::endl;
}

//! \}
