laplace.c File Reference

#include "laplace.h"
#include "mathops.h"

Macros
#define	LAPLACE_LOG_MINP   (0)
#define	LAPLACE_MINP   (1<<LAPLACE_LOG_MINP)
#define	LAPLACE_NMIN   (16)

Functions
void	ec_laplace_encode (ec_enc *enc, int *value, unsigned fs, int decay)
int	ec_laplace_decode (ec_dec *dec, unsigned fs, int decay)

Macro Definition Documentation

LAPLACE_LOG_MINP

#define LAPLACE_LOG_MINP   (0)

LAPLACE_MINP

#define LAPLACE_MINP   (1<<LAPLACE_LOG_MINP)

LAPLACE_NMIN

#define LAPLACE_NMIN   (16)

Function Documentation

ec_laplace_decode()

int ec_laplace_decode	(	ec_dec *	dec,
		unsigned	fs,
		int	decay
	)

Decode a value that is assumed to be the realisation of a Laplace-distributed random process

Parameters

dec	Entropy decoder state
fs	Probability of 0, multiplied by 32768
decay	Probability of the value +/- 1, multiplied by 16384

Returns

Value decoded

ec_laplace_encode()

void ec_laplace_encode	(	ec_enc *	enc,
		int *	value,
		unsigned	fs,
		int	decay
	)

Encode a value that is assumed to be the realisation of a Laplace-distributed random process

Parameters

enc	Entropy encoder state
value	Value to encode
fs	Probability of 0, multiplied by 32768
decay	Probability of the value +/- 1, multiplied by 16384