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libavcodec
arm
fmtconvert_init_arm.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 Libav.
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*
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* Libav 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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* Libav 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 Libav; 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/arm/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_scalar_neon
(
float
*dst,
const
int
*src,
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float
mul,
int
len
);
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void
ff_int32_to_float_fmul_scalar_vfp
(
float
*dst,
const
int32_t
*src,
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float
mul,
int
len
);
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void
ff_int32_to_float_fmul_array8_vfp
(
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_float_to_int16_neon
(int16_t *dst,
const
float
*src,
long
len
);
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void
ff_float_to_int16_interleave_neon
(int16_t *,
const
float
**,
long
,
int
);
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void
ff_float_to_int16_vfp
(int16_t *dst,
const
float
*src,
long
len
);
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void
ff_fmt_convert_init_arm
(
FmtConvertContext
*c,
AVCodecContext
*avctx)
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{
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int
cpu_flags
=
av_get_cpu_flags
();
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if
(
have_vfp
(cpu_flags) &&
have_armv6
(cpu_flags)) {
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if
(!
have_vfpv3
(cpu_flags)) {
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// These functions don't use anything armv6 specific in themselves,
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// but ff_float_to_int16_vfp which is in the same assembly source
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// file does, thus the whole file requires armv6 to be built.
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c->
int32_to_float_fmul_scalar
=
ff_int32_to_float_fmul_scalar_vfp
;
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c->
int32_to_float_fmul_array8
=
ff_int32_to_float_fmul_array8_vfp
;
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}
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c->
float_to_int16
=
ff_float_to_int16_vfp
;
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}
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if
(
have_neon
(cpu_flags)) {
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c->
int32_to_float_fmul_scalar
=
ff_int32_to_float_fmul_scalar_neon
;
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if
(!(avctx->
flags
&
CODEC_FLAG_BITEXACT
)) {
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c->
float_to_int16
=
ff_float_to_int16_neon
;
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c->
float_to_int16_interleave
=
ff_float_to_int16_interleave_neon
;
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}
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}
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}