gecko/media/libopus/celt/laplace.h

/* Copyright (c) 2007 CSIRO
   Copyright (c) 2007-2009 Xiph.Org Foundation
   Written by Jean-Marc Valin */
/*
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   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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*/

#include "entenc.h"
#include "entdec.h"

/** Encode a value that is assumed to be the realisation of a
    Laplace-distributed random process
 @param enc Entropy encoder state
 @param value Value to encode
 @param fs Probability of 0, multiplied by 32768
 @param decay Probability of the value +/- 1, multiplied by 16384
*/
void ec_laplace_encode(ec_enc *enc, int *value, unsigned fs, int decay);

/** Decode a value that is assumed to be the realisation of a
    Laplace-distributed random process
 @param dec Entropy decoder state
 @param fs Probability of 0, multiplied by 32768
 @param decay Probability of the value +/- 1, multiplied by 16384
 @return Value decoded
 */
int ec_laplace_decode(ec_dec *dec, unsigned fs, int decay);