1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
/*
* ARM optimized Format Conversion Utils
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdint.h>
#include "libavutil/arm/cpu.h"
#include "libavcodec/avcodec.h"
#include "libavcodec/fmtconvert.h"
void ff_int32_to_float_fmul_scalar_neon(float *dst, const int *src,
float mul, int len);
void ff_float_to_int16_neon(int16_t *dst, const float *src, long len);
void ff_float_to_int16_interleave_neon(int16_t *, const float **, long, int);
void ff_float_to_int16_vfp(int16_t *dst, const float *src, long len);
void ff_fmt_convert_init_arm(FmtConvertContext *c, AVCodecContext *avctx)
{
int cpu_flags = av_get_cpu_flags();
if (have_vfp(cpu_flags) && have_armv6(cpu_flags)) {
c->float_to_int16 = ff_float_to_int16_vfp;
}
if (have_neon(cpu_flags)) {
c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_neon;
if (!(avctx->flags & CODEC_FLAG_BITEXACT)) {
c->float_to_int16 = ff_float_to_int16_neon;
c->float_to_int16_interleave = ff_float_to_int16_interleave_neon;
}
}
}
|
