1/* 2 * Copyright (c) 2011 Mans Rullgard <mans@mansr.com> 3 * 4 * This file is part of FFmpeg. 5 * 6 * FFmpeg is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * FFmpeg is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with FFmpeg; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21#include <stdint.h> 22 23#include "libavutil/arm/cpu.h" 24#include "libavutil/attributes.h" 25#include "libavcodec/ac3dsp.h" 26#include "config.h" 27 28void ff_ac3_exponent_min_neon(uint8_t *exp, int num_reuse_blocks, int nb_coefs); 29int ff_ac3_max_msb_abs_int16_neon(const int16_t *src, int len); 30void ff_ac3_lshift_int16_neon(int16_t *src, unsigned len, unsigned shift); 31void ff_ac3_rshift_int32_neon(int32_t *src, unsigned len, unsigned shift); 32void ff_float_to_fixed24_neon(int32_t *dst, const float *src, unsigned int len); 33void ff_ac3_extract_exponents_neon(uint8_t *exp, int32_t *coef, int nb_coefs); 34void ff_apply_window_int16_neon(int16_t *dst, const int16_t *src, 35 const int16_t *window, unsigned n); 36void ff_ac3_sum_square_butterfly_int32_neon(int64_t sum[4], 37 const int32_t *coef0, 38 const int32_t *coef1, 39 int len); 40void ff_ac3_sum_square_butterfly_float_neon(float sum[4], 41 const float *coef0, 42 const float *coef1, 43 int len); 44 45void ff_ac3_bit_alloc_calc_bap_armv6(int16_t *mask, int16_t *psd, 46 int start, int end, 47 int snr_offset, int floor, 48 const uint8_t *bap_tab, uint8_t *bap); 49 50void ff_ac3_update_bap_counts_arm(uint16_t mant_cnt[16], uint8_t *bap, int len); 51 52av_cold void ff_ac3dsp_init_arm(AC3DSPContext *c, int bit_exact) 53{ 54 int cpu_flags = av_get_cpu_flags(); 55 56 c->update_bap_counts = ff_ac3_update_bap_counts_arm; 57 58 if (have_armv6(cpu_flags)) { 59 c->bit_alloc_calc_bap = ff_ac3_bit_alloc_calc_bap_armv6; 60 } 61 62 if (have_neon(cpu_flags)) { 63 c->ac3_exponent_min = ff_ac3_exponent_min_neon; 64 c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_neon; 65 c->ac3_lshift_int16 = ff_ac3_lshift_int16_neon; 66 c->ac3_rshift_int32 = ff_ac3_rshift_int32_neon; 67 c->float_to_fixed24 = ff_float_to_fixed24_neon; 68 c->extract_exponents = ff_ac3_extract_exponents_neon; 69 c->apply_window_int16 = ff_apply_window_int16_neon; 70 c->sum_square_butterfly_int32 = ff_ac3_sum_square_butterfly_int32_neon; 71 c->sum_square_butterfly_float = ff_ac3_sum_square_butterfly_float_neon; 72 } 73} 74