Main Page
Related Pages
Modules
Data Structures
Files
Examples
File List
Globals
libavcodec
celp_math.h
Go to the documentation of this file.
1
/*
2
* Various fixed-point math operations
3
*
4
* Copyright (c) 2008 Vladimir Voroshilov
5
*
6
* This file is part of Libav.
7
*
8
* Libav 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
* Libav 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 Libav; 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_CELP_MATH_H
24
#define AVCODEC_CELP_MATH_H
25
26
#include <stdint.h>
27
34
int16_t
ff_cos
(uint16_t arg);
35
43
int
ff_exp2
(uint16_t power);
44
51
int
ff_log2
(uint32_t value);
52
60
static
inline
int
bidir_sal
(
int
value,
int
offset)
61
{
62
if
(offset < 0)
return
value >> -offset;
63
else
return
value << offset;
64
}
65
74
float
ff_dot_productf
(
const
float
* a,
const
float
*
b
,
int
length);
75
76
#endif
/* AVCODEC_CELP_MATH_H */