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 /* Copyright (c) 2007 CSIRO

    Copyright (c) 2007-2009 Xiph.Org Foundation

    Written by Jean-Marc Valin */

 /*

    Redistribution and use in source and binary forms, with or without

    modification, are permitted provided that the following conditions

    are met:

    - Redistributions of source code must retain the above copyright

    notice, this list of conditions and the following disclaimer.

    - Redistributions in binary form must reproduce the above copyright

    notice, this list of conditions and the following disclaimer in the

    documentation and/or other materials provided with the distribution.

    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

    A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER

    OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

    EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

    LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

    NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

 #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);