1/*
2 * Header file for hardcoded AAC cube-root table
3 *
4 * Copyright (c) 2010 Reimar D��ffinger <Reimar.Doeffinger@gmx.de>
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 CBRT_TABLEGEN_H
24#define CBRT_TABLEGEN_H
25
26#include <stdint.h>
27#include <math.h>
28
29#if CONFIG_HARDCODED_TABLES
30#define cbrt_tableinit()
31#include "libavcodec/cbrt_tables.h"
32#else
33static uint32_t cbrt_tab[1 << 13];
34
35static void cbrt_tableinit(void)
36{
37    if (!cbrt_tab[(1<<13) - 1]) {
38        int i;
39        for (i = 0; i < 1<<13; i++) {
40            union {
41                float f;
42                uint32_t i;
43            } f;
44            f.f = cbrtf(i) * i;
45            cbrt_tab[i] = f.i;
46        }
47    }
48}
49#endif /* CONFIG_HARDCODED_TABLES */
50
51#endif /* CBRT_TABLEGEN_H */
52