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/** \file     TAppDecLib.h
    \brief    Decoder application class (header)
*/

#ifndef __DECAPP__
#define __DECAPP__

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include "Utilities/VideoIOYuv.h"
#include "Utilities/ColourRemapping.h"
#include "CommonLib/Picture.h"
#include "DecoderLib/DecLib.h"
#include "DecAppCfg.h"

//! \ingroup DecoderApp
//! \{

// ====================================================================================================================
// Class definition
// ====================================================================================================================

/// decoder application class
class DecApp : public DecAppCfg
{
private:
  // class interface
  DecLib          m_cDecLib;                     ///< decoder class
  std::unordered_map<int, VideoIOYuv>      m_cVideoIOYuvReconFile;        ///< reconstruction YUV class

  // for output control
  int             m_iPOCLastDisplay;              ///< last POC in display order
  std::ofstream   m_seiMessageFileStream;         ///< Used for outputing SEI messages.

#if JVET_P2008_OUTPUT_LOG
  std::ofstream   m_oplFileStream;                ///< Used to output log file for confomance testing
#endif //JVET_P2008_OUTPUT_LOG


#if HEVC_SEI
  ColourRemapping m_cColourRemapping;             ///< colour remapping handler
#endif

#if JVET_Q0814_DPB
private:
  bool  xIsNaluWithinTargetDecLayerIdSet( const InputNALUnit* nalu ) const; ///< check whether given Nalu is within targetDecLayerIdSet
  bool  xIsNaluWithinTargetOutputLayerIdSet( const InputNALUnit* nalu ) const; ///< check whether given Nalu is within targetOutputLayerIdSet
#endif

public:
  DecApp();
  virtual ~DecApp         ()  {}

  uint32_t  decode            (); ///< main decoding function

private:
  void  xCreateDecLib     (); ///< create internal classes
  void  xDestroyDecLib    (); ///< destroy internal classes
  void  xWriteOutput      ( PicList* pcListPic , uint32_t tId); ///< write YUV to file
  void  xFlushOutput( PicList* pcListPic, const int layerId = NOT_VALID ); ///< flush all remaining decoded pictures to file
#if !JVET_Q0814_DPB
  bool  isNaluWithinTargetDecLayerIdSet ( InputNALUnit* nalu ); ///< check whether given Nalu is within targetDecLayerIdSet
  bool  isNaluWithinTargetOutputLayerIdSet(InputNALUnit* nalu); ///< check whether given Nalu is within targetOutputLayerIdSet
  bool  deriveOutputLayerSet(); ///< derive OLS and layer sets
#endif
  bool  isNewPicture(ifstream *bitstreamFile, class InputByteStream *bytestream);  ///< check if next NAL unit will be the first NAL unit from a new picture
  bool  isNewAccessUnit(bool newPicture, ifstream *bitstreamFile, class InputByteStream *bytestream);  ///< check if next NAL unit will be the first NAL unit from a new access unit

#if JVET_P2008_OUTPUT_LOG 
  void  writeLineToOutputLog(Picture * pcPic);
#endif // JVET_P2008_OUTPUT_LOG 

};

//! \}

#endif // __DECAPP__

