FFmpeg
4.4.5
libavcodec
aarch64
fmtconvert_init.c
Go to the documentation of this file.
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/*
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* ARM optimized Format Conversion Utils
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* 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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* FFmpeg 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 FFmpeg; 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 "
libavutil/attributes.h
"
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#include "
libavutil/aarch64/cpu.h
"
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#include "
libavcodec/avcodec.h
"
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#include "
libavcodec/fmtconvert.h
"
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void
ff_int32_to_float_fmul_array8_neon
(
FmtConvertContext
*
c
,
float
*dst,
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const
int32_t
*
src
,
const
float
*
mul
,
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int
len
);
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void
ff_int32_to_float_fmul_scalar_neon
(
float
*dst,
const
int32_t
*
src
,
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float
mul
,
int
len
);
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av_cold
void
ff_fmt_convert_init_aarch64
(
FmtConvertContext
*
c
,
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AVCodecContext
*avctx)
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{
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int
cpu_flags
=
av_get_cpu_flags
();
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if
(
have_neon
(
cpu_flags
)) {
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c
->int32_to_float_fmul_array8 =
ff_int32_to_float_fmul_array8_neon
;
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c
->int32_to_float_fmul_scalar =
ff_int32_to_float_fmul_scalar_neon
;
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}
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}
cpu.h
have_neon
#define have_neon(flags)
Definition:
cpu.h:26
ff_int32_to_float_fmul_scalar_neon
void ff_int32_to_float_fmul_scalar_neon(float *dst, const int32_t *src, float mul, int len)
ff_fmt_convert_init_aarch64
av_cold void ff_fmt_convert_init_aarch64(FmtConvertContext *c, AVCodecContext *avctx)
Definition:
fmtconvert_init.c:34
ff_int32_to_float_fmul_array8_neon
void ff_int32_to_float_fmul_array8_neon(FmtConvertContext *c, float *dst, const int32_t *src, const float *mul, int len)
attributes.h
Macro definitions for various function/variable attributes.
av_cold
#define av_cold
Definition:
attributes.h:88
int32_t
int32_t
Definition:
audio_convert.c:194
avcodec.h
Libavcodec external API header.
cpu_flags
static atomic_int cpu_flags
Definition:
cpu.c:50
av_get_cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition:
cpu.c:95
mul
static float mul(float src0, float src1)
Definition:
dnn_backend_native_layer_mathbinary.c:40
fmtconvert.h
AVCodecContext
main external API structure.
Definition:
avcodec.h:536
FmtConvertContext
Definition:
fmtconvert.h:28
src
#define src
Definition:
vp8dsp.c:255
len
int len
Definition:
vorbis_enc_data.h:452
c
static double c[64]
Definition:
vsrc_mptestsrc.c:92
Generated on Sun Apr 20 2025 13:06:49 for FFmpeg by
1.9.1