FFmpeg
Main Page
Related Pages
Modules
Namespaces
Data Structures
Files
Examples
File List
Globals
All
Data Structures
Namespaces
Files
Functions
Variables
Typedefs
Enumerations
Enumerator
Macros
Groups
Pages
libavcodec
fmtconvert.h
Go to the documentation of this file.
1
/*
2
* Format Conversion Utils
3
* Copyright (c) 2000, 2001 Fabrice Bellard
4
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
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_FMTCONVERT_H
24
#define AVCODEC_FMTCONVERT_H
25
26
#include "
avcodec.h
"
27
28
typedef
struct
FmtConvertContext
{
29
/**
30
* Convert an array of int32_t to float and multiply by a float value.
31
* @param dst destination array of float.
32
* constraints: 16-byte aligned
33
* @param src source array of int32_t.
34
* constraints: 16-byte aligned
35
* @param len number of elements to convert.
36
* constraints: multiple of 8
37
*/
38
void
(*
int32_to_float_fmul_scalar
)(
float
*dst,
const
int32_t
*
src
,
39
float
mul,
int
len
);
40
41
/**
42
* Convert an array of int32_t to float and multiply by a float value from another array,
43
* stepping along the float array once for each 8 integers.
44
* @param c pointer to FmtConvertContext.
45
* @param dst destination array of float.
46
* constraints: 16-byte aligned
47
* @param src source array of int32_t.
48
* constraints: 16-byte aligned
49
* @param mul source array of float multipliers.
50
* @param len number of elements to convert.
51
* constraints: multiple of 8
52
*/
53
void
(*
int32_to_float_fmul_array8
)(
struct
FmtConvertContext
*
c
,
54
float
*dst,
const
int32_t
*
src
,
55
const
float
*mul,
int
len
);
56
57
}
FmtConvertContext
;
58
59
void
ff_fmt_convert_init
(
FmtConvertContext
*
c
,
AVCodecContext
*avctx);
60
61
void
ff_fmt_convert_init_arm
(
FmtConvertContext
*
c
,
AVCodecContext
*avctx);
62
void
ff_fmt_convert_init_ppc
(
FmtConvertContext
*
c
,
AVCodecContext
*avctx);
63
void
ff_fmt_convert_init_x86
(
FmtConvertContext
*
c
,
AVCodecContext
*avctx);
64
void
ff_fmt_convert_init_mips
(
FmtConvertContext
*
c
);
65
66
/* ffdshow custom code */
67
void
float_interleave
(
float
*dst,
const
float
**
src
,
long
len
,
int
channels);
68
void
float_interleave_noscale
(
float
*dst,
const
float
**
src
,
long
len
,
int
channels);
69
70
#endif
/* AVCODEC_FMTCONVERT_H */
Generated on Sun Mar 8 2015 02:34:51 for FFmpeg by
1.8.2