1/* Copyright (c) 2009-2010 Xiph.Org Foundation
2   Written by Jean-Marc Valin */
3/*
4   Redistribution and use in source and binary forms, with or without
5   modification, are permitted provided that the following conditions
6   are met:
7
8   - Redistributions of source code must retain the above copyright
9   notice, this list of conditions and the following disclaimer.
10
11   - Redistributions in binary form must reproduce the above copyright
12   notice, this list of conditions and the following disclaimer in the
13   documentation and/or other materials provided with the distribution.
14
15   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
18   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
19   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
22   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
23   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
24   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26*/
27
28#ifndef PLC_H
29#define PLC_H
30
31#include "arch.h"
32
33#define LPC_ORDER 24
34
35void _celt_lpc(opus_val16 *_lpc, const opus_val32 *ac, int p);
36
37void celt_fir(const opus_val16 *x,
38         const opus_val16 *num,
39         opus_val16 *y,
40         int N,
41         int ord,
42         opus_val16 *mem);
43
44void celt_iir(const opus_val32 *x,
45         const opus_val16 *den,
46         opus_val32 *y,
47         int N,
48         int ord,
49         opus_val16 *mem);
50
51int _celt_autocorr(const opus_val16 *x, opus_val32 *ac,
52         const opus_val16 *window, int overlap, int lag, int n, int arch);
53
54#endif /* PLC_H */
55