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/** \file     TDecBinCoder.h
    \brief    binary entropy decoder interface
*/

#ifndef __TDEC_BIN_CODER__
#define __TDEC_BIN_CODER__

#include "TLibCommon/ContextModel.h"
#include "TLibCommon/TComBitStream.h"

//! \ingroup TLibDecoder
//! \{
class TDecBinCABAC;

class TDecBinIf
{
public:
  virtual Void  init              ( TComInputBitstream* pcTComBitstream )     = 0;
  virtual Void  uninit            ()                                          = 0;

  virtual Void  start             ()                                          = 0;
  virtual Void  finish            ()                                          = 0;
#if OL_FLUSH
  virtual Void  flush            ()                                           = 0;
#endif

  virtual Void  decodeBin         ( UInt& ruiBin, ContextModel& rcCtxModel )  = 0;
  virtual Void  decodeBinEP       ( UInt& ruiBin                           )  = 0;
  virtual Void  decodeBinsEP      ( UInt& ruiBins, Int numBins             )  = 0;
  virtual Void  decodeBinTrm      ( UInt& ruiBin                           )  = 0;
  
  virtual Void  resetBac          ()                                          = 0;
#if BURST_IPCM
  virtual Void  decodeNumSubseqIPCM( Int& numSubseqIPCM )                  = 0;
#endif
  virtual Void  decodePCMAlignBits()                                          = 0;
  virtual Void  xReadPCMCode      ( UInt uiLength, UInt& ruiCode)              = 0;

  virtual ~TDecBinIf() {}

  virtual Void  copyState         ( TDecBinIf* pcTDecBinIf )                  = 0;
  virtual TDecBinCABAC*   getTDecBinCABAC   ()  { return 0; }
#if !OL_FLUSH_ALIGN
  virtual Int   getBitsReadAhead() { return 0; }
#endif
};

//! \}

#endif
