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libswresample
aarch64
audio_convert_init.c
Go to the documentation of this file.
1
/*
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* This file is part of libswresample.
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*
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* libswresample is free software; you can redistribute it and/or
5
* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* libswresample is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with libswresample; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdint.h>
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#include "
config.h
"
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#include "
libavutil/attributes.h
"
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#include "
libavutil/cpu.h
"
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#include "
libavutil/aarch64/cpu.h
"
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#include "
libavutil/samplefmt.h
"
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#include "
libswresample/swresample_internal.h
"
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#include "
libswresample/audioconvert.h
"
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void
swri_oldapi_conv_flt_to_s16_neon
(int16_t *dst,
const
float
*
src
,
int
len
);
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void
swri_oldapi_conv_fltp_to_s16_2ch_neon
(int16_t *dst,
float
*
const
*
src
,
int
len
,
int
channels);
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void
swri_oldapi_conv_fltp_to_s16_nch_neon
(int16_t *dst,
float
*
const
*
src
,
int
len
,
int
channels);
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static
void
conv_flt_to_s16_neon
(
uint8_t
**dst,
const
uint8_t
**
src
,
int
len
){
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swri_oldapi_conv_flt_to_s16_neon
((int16_t*)*dst, (
const
float
*)*src, len);
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}
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static
void
conv_fltp_to_s16_2ch_neon
(
uint8_t
**dst,
const
uint8_t
**
src
,
int
len
){
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swri_oldapi_conv_fltp_to_s16_2ch_neon
((int16_t*)*dst, (
float
*
const
*)src, len, 2);
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}
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static
void
conv_fltp_to_s16_nch_neon
(
uint8_t
**dst,
const
uint8_t
**
src
,
int
len
){
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int
channels;
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for
(channels=3; channels<
SWR_CH_MAX
&& src[channels]; channels++)
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;
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swri_oldapi_conv_fltp_to_s16_nch_neon
((int16_t*)*dst, (
float
*
const
*)src, len, channels);
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}
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av_cold
void
swri_audio_convert_init_aarch64
(
struct
AudioConvert
*ac,
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enum
AVSampleFormat
out_fmt,
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enum
AVSampleFormat
in_fmt,
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int
channels)
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{
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int
cpu_flags =
av_get_cpu_flags
();
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ac->
simd_f
=
NULL
;
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if
(
have_neon
(cpu_flags)) {
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if
(out_fmt ==
AV_SAMPLE_FMT_S16
&& in_fmt ==
AV_SAMPLE_FMT_FLT
|| out_fmt ==
AV_SAMPLE_FMT_S16P
&& in_fmt ==
AV_SAMPLE_FMT_FLTP
)
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ac->
simd_f
=
conv_flt_to_s16_neon
;
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if
(out_fmt ==
AV_SAMPLE_FMT_S16
&& in_fmt ==
AV_SAMPLE_FMT_FLTP
&& channels == 2)
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ac->
simd_f
=
conv_fltp_to_s16_2ch_neon
;
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if
(out_fmt ==
AV_SAMPLE_FMT_S16
&& in_fmt ==
AV_SAMPLE_FMT_FLTP
&& channels > 2)
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ac->
simd_f
=
conv_fltp_to_s16_nch_neon
;
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if
(ac->
simd_f
)
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ac->
in_simd_align_mask
= ac->
out_simd_align_mask
= 15;
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}
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}
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1.8.1.2