quantize.h

LastWave

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/*      L a s t W a v e    P a c k a g e 'compress2d' 2.1                   */
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/*      Copyright (C) 1998-2002 Geoff Davis, Emmanuel Bacry, Jerome Fraleu. */
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/*      The original program was written in C++ by Geoff Davis.             */
/*      Then it has been translated in C and adapted to LastWave by         */
/*      J. Fraleu and E. Bacry.                                             */
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#ifndef _QUANTIZER_
#define _QUANTIZER_


typedef struct uniformQuant  {
 
  int imin, imax, imean;
  LWFLOAT qmin, qmax, qmean;
  MonoLayerCoder *entropy;
  int paramPrecision, zeroCenter;  
  LWFLOAT p;

  LWFLOAT *data;  /* input datas */
  int nData;

  int * symbol; /* symbol = quantif(datas). */
  int nSymbol;
  
  LWFLOAT stepSize;
 


  LWFLOAT max, min, mean, var, sum, sumSq;
  LWFLOAT initialDist;

} UniformQuant, *UNIFORMQUANT;


extern UNIFORMQUANT NewUniformQuant (MONOLAYERCODER entropy, int paramPrecision,LWFLOAT StepSize,int zeroCenter); 
extern void DeleteUniformQuant (UNIFORMQUANT u);
extern void GetStatsUniformQuant (UNIFORMQUANT u);
extern void SetDataEncodeUniformQuant (UNIFORMQUANT u, LWFLOAT *newData, int newNData);
extern void SetDataDecodeUniformQuant (UNIFORMQUANT u, LWFLOAT *newData, int newNData, int imax, int imin, int imean);
extern void GetRateDistUniformQuant( UNIFORMQUANT u, LWFLOAT minStepSize,LWFLOAT *rate, LWFLOAT *dist); 
extern void EncodeUniformQuant (UNIFORMQUANT u, ENCODER encoder);
extern void DequantizeUniformQuant (UNIFORMQUANT u, DECODER decoder);
extern void WriteHeaderUniformQuant (UNIFORMQUANT u, ENCODER encoder);
extern void ReadHeaderUniformQuant(UNIFORMQUANT u, DECODER decoder);


#endif