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

#ifndef __TAPPDECTOP__
#define __TAPPDECTOP__

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

#include "TLibVideoIO/TVideoIOYuv.h"
#include "TLibCommon/TComList.h"
#include "TLibCommon/TComPicYuv.h"
#include "TLibDecoder/TDecTop.h"
#include "TAppDecCfg.h"

//! \ingroup TAppDecoder
//! \{

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

/// decoder application class
class TAppDecTop : public TAppDecCfg
{
private:
  // class interface
#if NH_MV
  TDecTop*                        m_tDecTop             [ MAX_NUM_LAYERS ];    ///< decoder classes
  TVideoIOYuv*                    m_tVideoIOYuvReconFile[ MAX_NUM_LAYERS ];    ///< reconstruction YUV class
  Int                             m_layerIdToDecIdx     [ MAX_NUM_LAYER_IDS ]; ///< maping from layer id to decoder index
  Int                             m_numDecoders;                               ///< number of decoder instances
  TComPicLists                    m_ivPicLists;                                ///< picture buffers of decoder instances
  Bool                            m_layerInitilizedFlags[ MAX_NUM_LAYER_IDS ]; ///< for layerwise startup 
  const TComVPS*                  m_vps;                                ///< active VPS
#else
  TDecTop                         m_cTDecTop;                     ///< decoder class
  TVideoIOYuv                     m_cTVideoIOYuvReconFile;        ///< reconstruction YUV class
#endif
  // for output control
#if NH_MV
  Int                             m_pocLastDisplay      [ MAX_NUM_LAYERS ]; ///< last POC in display order
  Bool                            m_reconOpen           [ MAX_NUM_LAYERS ]; ///< reconstruction file opened
  Bool                            m_markedForOutput; 
#else
  Int                             m_iPOCLastDisplay;              ///< last POC in display order
#endif
  std::ofstream                   m_seiMessageFileStream;         ///< Used for outputing SEI messages.

#if NH_3D
  FILE*                           m_pScaleOffsetFile;
  CamParsCollector                m_cCamParsCollector;
#endif
public:
  TAppDecTop();
  virtual ~TAppDecTop() {}

  Void  create            (); ///< create internal members
  Void  destroy           (); ///< destroy internal members
  Void  decode            (); ///< main decoding function
#if NH_MV
  UInt  getNumberOfChecksumErrorsDetected( ) const 
  {
    UInt numOfChecksumErrors = 0; 
    for (Int i = 0; i < m_numDecoders; i++ )
    {
      numOfChecksumErrors += getNumberOfChecksumErrorsDetected( i ); 
    }
    return numOfChecksumErrors; 
  }

  UInt  getNumberOfChecksumErrorsDetected( Int decIdx ) const { return m_tDecTop[decIdx]->getNumberOfChecksumErrorsDetected(); }

#else
  UInt  getNumberOfChecksumErrorsDetected() const { return m_cTDecTop.getNumberOfChecksumErrorsDetected(); }
#endif

protected:
  Void  xCreateDecLib     (); ///< create internal classes
  Void  xDestroyDecLib    (); ///< destroy internal classes
  Void  xInitDecLib       (); ///< initialize decoder class

#if NH_MV
  Void  xWriteOutput      ( TComList<TComPic*>* pcListPic, Int layerId, Int tId ); ///< write YUV to file

  Void  xMarkForOutput   ( Bool allLayersDecoded, Int pocLastPic, Int layerIdLastPic );         
  Void  xMarkAltOutPic    ( Int targetOutputLayer, Int pocLastPic );

  Void  xFlushOutput      ( TComList<TComPic*>* pcListPic, Int layerId ); ///< flush all remaining decoded pictures to file
  Int   xGetDecoderIdx    ( Int layerId, Bool createFlag = false );
#else
  Void  xWriteOutput      ( TComList<TComPic*>* pcListPic , UInt tId); ///< write YUV to file
  Void  xFlushOutput      ( TComList<TComPic*>* pcListPic ); ///< flush all remaining decoded pictures to file
#endif
  Bool  isNaluWithinTargetDecLayerIdSet ( InputNALUnit* nalu ); ///< check whether given Nalu is within targetDecLayerIdSet
};

//! \}

#endif