FFmpeg
2.6.9
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
arm
ac3dsp_init_arm.c
Go to the documentation of this file.
1
/*
2
* Copyright (c) 2011 Mans Rullgard <mans@mansr.com>
3
*
4
* This file is part of FFmpeg.
5
*
6
* FFmpeg is free software; you can redistribute it and/or
7
* modify it under the terms of the GNU Lesser General Public
8
* License as published by the Free Software Foundation; either
9
* version 2.1 of the License, or (at your option) any later version.
10
*
11
* FFmpeg is distributed in the hope that it will be useful,
12
* but WITHOUT ANY WARRANTY; without even the implied warranty of
13
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14
* Lesser General Public License for more details.
15
*
16
* You should have received a copy of the GNU Lesser General Public
17
* License along with FFmpeg; if not, write to the Free Software
18
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19
*/
20
21
#include <stdint.h>
22
23
#include "
libavutil/arm/cpu.h
"
24
#include "
libavutil/attributes.h
"
25
#include "
libavcodec/ac3dsp.h
"
26
#include "
config.h
"
27
28
void
ff_ac3_exponent_min_neon
(
uint8_t
*exp,
int
num_reuse_blocks,
int
nb_coefs);
29
int
ff_ac3_max_msb_abs_int16_neon
(
const
int16_t *
src
,
int
len
);
30
void
ff_ac3_lshift_int16_neon
(int16_t *
src
,
unsigned
len
,
unsigned
shift
);
31
void
ff_ac3_rshift_int32_neon
(
int32_t
*
src
,
unsigned
len
,
unsigned
shift
);
32
void
ff_float_to_fixed24_neon
(
int32_t
*dst,
const
float
*
src
,
unsigned
int
len
);
33
void
ff_ac3_extract_exponents_neon
(
uint8_t
*exp,
int32_t
*coef,
int
nb_coefs);
34
void
ff_apply_window_int16_neon
(int16_t *dst,
const
int16_t *
src
,
35
const
int16_t *window,
unsigned
n
);
36
void
ff_ac3_sum_square_butterfly_int32_neon
(int64_t sum[4],
37
const
int32_t
*coef0,
38
const
int32_t
*coef1,
39
int
len
);
40
void
ff_ac3_sum_square_butterfly_float_neon
(
float
sum[4],
41
const
float
*coef0,
42
const
float
*coef1,
43
int
len
);
44
45
void
ff_ac3_bit_alloc_calc_bap_armv6
(int16_t *
mask
, int16_t *psd,
46
int
start
,
int
end
,
47
int
snr_offset,
int
floor,
48
const
uint8_t
*bap_tab,
uint8_t
*bap);
49
50
void
ff_ac3_update_bap_counts_arm
(uint16_t mant_cnt[16],
uint8_t
*bap,
int
len
);
51
52
av_cold
void
ff_ac3dsp_init_arm
(
AC3DSPContext
*
c
,
int
bit_exact)
53
{
54
int
cpu_flags =
av_get_cpu_flags
();
55
56
c->
update_bap_counts
=
ff_ac3_update_bap_counts_arm
;
57
58
if
(
have_armv6
(cpu_flags)) {
59
c->
bit_alloc_calc_bap
=
ff_ac3_bit_alloc_calc_bap_armv6
;
60
}
61
62
if
(
have_neon
(cpu_flags)) {
63
c->
ac3_exponent_min
=
ff_ac3_exponent_min_neon
;
64
c->
ac3_max_msb_abs_int16
=
ff_ac3_max_msb_abs_int16_neon
;
65
c->
ac3_lshift_int16
=
ff_ac3_lshift_int16_neon
;
66
c->
ac3_rshift_int32
=
ff_ac3_rshift_int32_neon
;
67
c->
float_to_fixed24
=
ff_float_to_fixed24_neon
;
68
c->
extract_exponents
=
ff_ac3_extract_exponents_neon
;
69
c->
apply_window_int16
=
ff_apply_window_int16_neon
;
70
c->
sum_square_butterfly_int32
=
ff_ac3_sum_square_butterfly_int32_neon
;
71
c->
sum_square_butterfly_float
=
ff_ac3_sum_square_butterfly_float_neon
;
72
}
73
}
Generated on Thu Sep 30 2021 22:46:55 for FFmpeg by
1.8.1.2