libvoipcodecs 0.0.1
gainquant.h
1/*
2 * iLBC - a library for the iLBC codec
3 *
4 * gainquant.h - The iLBC low bit rate speech codec.
5 *
6 * Adapted by Steve Underwood <steveu@coppice.org> from the reference
7 * iLBC code supplied in RFC3951.
8 *
9 * Original code Copyright (C) The Internet Society (2004).
10 * All changes to produce this version Copyright (C) 2008 by Steve Underwood
11 * All Rights Reserved.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
16 *
17 * $Id: gainquant.h,v 1.2 2008/03/06 12:27:38 steveu Exp $
18 */
19
20#ifndef __iLBC_GAINQUANT_H
21#define __iLBC_GAINQUANT_H
22
23float gainquant( /* (o) quantized gain value */
24 float in, /* (i) gain value */
25 float maxIn, /* (i) maximum of gain value */
26 int cblen, /* (i) number of quantization indices */
27 int *index); /* (o) quantization index */
28
29float gaindequant( /* (o) quantized gain value */
30 int index, /* (i) quantization index */
31 float maxIn, /* (i) maximum of unquantized gain */
32 int cblen); /* (i) number of quantization indices */
33
34#endif