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1/*
2** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
3** Copyright (C) 2003-2004 M. Bakker, Ahead Software AG, http://www.nero.com
4**
5** This program is free software; you can redistribute it and/or modify
6** it under the terms of the GNU General Public License as published by
7** the Free Software Foundation; either version 2 of the License, or
8** (at your option) any later version.
9**
10** This program is distributed in the hope that it will be useful,
11** but WITHOUT ANY WARRANTY; without even the implied warranty of
12** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13** GNU General Public License for more details.
14**
15** You should have received a copy of the GNU General Public License
16** along with this program; if not, write to the Free Software
17** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18**
19** Any non-GPL usage of this software or parts of this software is strictly
20** forbidden.
21**
22** Commercial non-GPL licensing of this software is possible.
23** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
24**
25** $Id$
26**/
27
28#ifndef __PNS_H__
29#define __PNS_H__
30
31#ifdef __cplusplus
32extern "C" {
33#endif
34
35#include "syntax.h"
36
37#define NOISE_OFFSET 90
38
39void pns_decode(ic_stream *ics_left, ic_stream *ics_right,
40 real_t *spec_left, real_t *spec_right, uint16_t frame_len,
41 uint8_t channel_pair, uint8_t object_type);
42
43static INLINE uint8_t is_noise(ic_stream *ics, uint8_t group, uint8_t sfb)
44{
45 if (ics->sfb_cb[group][sfb] == NOISE_HCB)
46 return 1;
47 return 0;
48}
49
50#ifdef __cplusplus
51}
52#endif
53#endif