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libavcodec
arm
ac3dsp_init_arm.c
Go to the documentation of this file.
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/*
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* Copyright (c) 2011 Mans Rullgard <mans@mansr.com>
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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 "
libavutil/attributes.h
"
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#include "
libavcodec/ac3dsp.h
"
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#include "config.h"
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void
ff_ac3_exponent_min_neon
(
uint8_t
*exp,
int
num_reuse_blocks,
int
nb_coefs);
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int
ff_ac3_max_msb_abs_int16_neon
(
const
int16_t *src,
int
len
);
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void
ff_ac3_lshift_int16_neon
(int16_t *src,
unsigned
len
,
unsigned
shift);
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void
ff_ac3_rshift_int32_neon
(
int32_t
*src,
unsigned
len
,
unsigned
shift);
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void
ff_float_to_fixed24_neon
(
int32_t
*dst,
const
float
*src,
unsigned
int
len
);
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void
ff_ac3_extract_exponents_neon
(
uint8_t
*exp,
int32_t
*coef,
int
nb_coefs);
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void
ff_ac3_bit_alloc_calc_bap_armv6
(int16_t *
mask
, int16_t *psd,
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int
start,
int
end,
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int
snr_offset,
int
floor,
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const
uint8_t
*bap_tab,
uint8_t
*bap);
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void
ff_ac3_update_bap_counts_arm
(uint16_t mant_cnt[16],
uint8_t
*bap,
int
len
);
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av_cold
void
ff_ac3dsp_init_arm
(
AC3DSPContext
*c,
int
bit_exact)
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{
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int
cpu_flags
=
av_get_cpu_flags
();
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c->
update_bap_counts
=
ff_ac3_update_bap_counts_arm
;
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if
(
have_armv6
(cpu_flags)) {
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c->
bit_alloc_calc_bap
=
ff_ac3_bit_alloc_calc_bap_armv6
;
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}
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if
(
have_neon
(cpu_flags)) {
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c->
ac3_exponent_min
=
ff_ac3_exponent_min_neon
;
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c->
ac3_max_msb_abs_int16
=
ff_ac3_max_msb_abs_int16_neon
;
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c->
ac3_lshift_int16
=
ff_ac3_lshift_int16_neon
;
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c->
ac3_rshift_int32
=
ff_ac3_rshift_int32_neon
;
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c->
float_to_fixed24
=
ff_float_to_fixed24_neon
;
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c->
extract_exponents
=
ff_ac3_extract_exponents_neon
;
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}
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}