mirror of
https://github.com/FFmpeg/FFmpeg.git
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567c67c6c8
Should simplify asm implementations, and prevent UB on at least win64. Signed-off-by: James Almer <jamrial@gmail.com>
65 lines
2.6 KiB
C
65 lines
2.6 KiB
C
/*
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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 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/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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void ff_float_to_fixed24_neon(int32_t *dst, const float *src, size_t 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_sum_square_butterfly_int32_neon(int64_t sum[4],
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const int32_t *coef0,
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const int32_t *coef1,
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int len);
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void ff_ac3_sum_square_butterfly_float_neon(float sum[4],
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const float *coef0,
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const float *coef1,
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int len);
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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)
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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->float_to_fixed24 = ff_float_to_fixed24_neon;
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c->extract_exponents = ff_ac3_extract_exponents_neon;
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c->sum_square_butterfly_int32 = ff_ac3_sum_square_butterfly_int32_neon;
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c->sum_square_butterfly_float = ff_ac3_sum_square_butterfly_float_neon;
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}
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}
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