mirror of
https://github.com/WinampDesktop/winamp.git
synced 2024-12-12 06:31:02 -05:00
49 lines
2.1 KiB
C
49 lines
2.1 KiB
C
|
/* 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);
|