blob: faaa96301332deedb94cdce1c6b219a906caccd7
1 | /* |
2 | ** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding |
3 | ** Copyright (C) 2003-2005 M. Bakker, Nero 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 | ** The "appropriate copyright message" mentioned in section 2c of the GPLv2 |
23 | ** must read: "Code from FAAD2 is copyright (c) Nero AG, www.nero.com" |
24 | ** |
25 | ** Commercial non-GPL licensing of this software is possible. |
26 | ** For more info contact Nero AG through Mpeg4AAClicense@nero.com. |
27 | ** |
28 | ** $Id: ssr.h,v 1.19 2007/11/01 12:33:36 menno Exp $ |
29 | **/ |
30 | |
31 | #ifndef __SSR_H__ |
32 | #define __SSR_H__ |
33 | |
34 | #ifdef __cplusplus |
35 | extern "C" { |
36 | #endif |
37 | |
38 | #define SSR_BANDS 4 |
39 | #define PQFTAPS 96 |
40 | |
41 | void ssr_decode(ssr_info *ssr, fb_info *fb, uint8_t window_sequence, |
42 | uint8_t window_shape, uint8_t window_shape_prev, |
43 | real_t *freq_in, real_t *time_out, real_t *overlap, |
44 | real_t ipqf_buffer[SSR_BANDS][96 / 4], |
45 | real_t *prev_fmd, uint16_t frame_len); |
46 | |
47 | |
48 | static void ssr_gain_control(ssr_info *ssr, real_t *data, real_t *output, |
49 | real_t *overlap, real_t *prev_fmd, uint8_t band, |
50 | uint8_t window_sequence, uint16_t frame_len); |
51 | static void ssr_gc_function(ssr_info *ssr, real_t *prev_fmd, |
52 | real_t *gc_function, uint8_t window_sequence, |
53 | uint16_t frame_len); |
54 | |
55 | |
56 | #ifdef __cplusplus |
57 | } |
58 | #endif |
59 | #endif |
60 |