blob: 8dc603dce278ce38b022b6c09498eb61e2d4b9e0
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: is.h,v 1.20 2007/11/01 12:33:31 menno Exp $ |
29 | **/ |
30 | |
31 | #ifndef __IS_H__ |
32 | #define __IS_H__ |
33 | |
34 | #ifdef __cplusplus |
35 | extern "C" { |
36 | #endif |
37 | |
38 | #include "syntax.h" |
39 | |
40 | void is_decode(ic_stream *ics, ic_stream *icsr, real_t *l_spec, real_t *r_spec, |
41 | uint16_t frame_len); |
42 | |
43 | static INLINE int8_t is_intensity(ic_stream *ics, uint8_t group, uint8_t sfb) |
44 | { |
45 | switch (ics->sfb_cb[group][sfb]) { |
46 | case INTENSITY_HCB: |
47 | return 1; |
48 | case INTENSITY_HCB2: |
49 | return -1; |
50 | default: |
51 | return 0; |
52 | } |
53 | } |
54 | |
55 | static INLINE int8_t invert_intensity(ic_stream *ics, uint8_t group, uint8_t sfb) |
56 | { |
57 | if (ics->ms_mask_present == 1) { |
58 | return (1 - 2 * ics->ms_used[group][sfb]); |
59 | } |
60 | return 1; |
61 | } |
62 | |
63 | |
64 | #ifdef __cplusplus |
65 | } |
66 | #endif |
67 | #endif |
68 |