Class IntegerCompressor

src/integercompressor.hpp:54–101

#include "arithmeticdecoder.hpp"

class IntegerCompressor
{
public:

  // Constructor & Deconstructor
  IntegerCompressor(ArithmeticEncoder* enc, U32 bits=16, U32 contexts=1, U32 bits_high=8, U32 range=0);
  IntegerCompressor(ArithmeticDecoder* dec, U32 bits=16, U32 contexts=1, U32 bits_high=8, U32 range=0);
  ~IntegerCompressor();

  // Manage Compressor
  void initCompressor();
  void compress(I32 iPred, I32 iReal, U32 context=0);

  // Manage Decompressor
  void initDecompressor();
  I32 decompress(I32 iPred, U32 context=0);

  // Get the k corrector bits from the last compress/decompress call
  U32 getK() const {return k;};

private:
  void writeCorrector(I32 c, ArithmeticModel* model);
  I32 readCorrector(ArithmeticModel* model);

  U32 k;

  U32 contexts;
  U32 bits_high;

  U32 bits;
  U32 range;

  U32 corr_bits;
  U32 corr_range;
  I32 corr_min;
  I32 corr_max;

  ArithmeticEncoder* enc;
  ArithmeticDecoder* dec;

  ArithmeticModel** mBits;

  ArithmeticModel** mCorrector;

#ifdef CREATE_HISTOGRAMS
  int** corr_histogram;
#endif
};

#endif