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aac_tablegen.h
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1 /*
2  * Header file for hardcoded AAC tables
3  *
4  * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg 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. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 #ifndef AVCODEC_AAC_TABLEGEN_H
24 #define AVCODEC_AAC_TABLEGEN_H
25 
26 #include "aac_tablegen_decl.h"
27 
28 #if CONFIG_HARDCODED_TABLES
29 #include "libavcodec/aac_tables.h"
30 #else
31 #include "libavutil/mathematics.h"
32 float ff_aac_pow2sf_tab[428];
33 
34 void ff_aac_tableinit(void)
35 {
36  int i;
37  for (i = 0; i < 428; i++)
38  ff_aac_pow2sf_tab[i] = pow(2, (i - POW_SF2_ZERO) / 4.);
39 }
40 #endif /* CONFIG_HARDCODED_TABLES */
41 
42 #endif /* AVCODEC_AAC_TABLEGEN_H */