1/* 2 * Copyright (c) 2011 Mans Rullgard <mans@mansr.com> 3 * 4 * This file is part of Libav. 5 * 6 * Libav 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 * Libav 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 Libav; 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#include "libavutil/attributes.h" 23#include "libavcodec/ac3dsp.h" 24#include "config.h" 25 26void ff_ac3_exponent_min_neon(uint8_t *exp, int num_reuse_blocks, int nb_coefs); 27int ff_ac3_max_msb_abs_int16_neon(const int16_t *src, int len); 28void ff_ac3_lshift_int16_neon(int16_t *src, unsigned len, unsigned shift); 29void ff_ac3_rshift_int32_neon(int32_t *src, unsigned len, unsigned shift); 30void ff_float_to_fixed24_neon(int32_t *dst, const float *src, unsigned int len); 31void ff_ac3_extract_exponents_neon(uint8_t *exp, int32_t *coef, int nb_coefs); 32 33void ff_ac3_bit_alloc_calc_bap_armv6(int16_t *mask, int16_t *psd, 34 int start, int end, 35 int snr_offset, int floor, 36 const uint8_t *bap_tab, uint8_t *bap); 37 38void ff_ac3_update_bap_counts_arm(uint16_t mant_cnt[16], uint8_t *bap, int len); 39 40av_cold void ff_ac3dsp_init_arm(AC3DSPContext *c, int bit_exact) 41{ 42 c->update_bap_counts = ff_ac3_update_bap_counts_arm; 43 44 if (HAVE_ARMV6) { 45 c->bit_alloc_calc_bap = ff_ac3_bit_alloc_calc_bap_armv6; 46 } 47 48 if (HAVE_NEON) { 49 c->ac3_exponent_min = ff_ac3_exponent_min_neon; 50 c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_neon; 51 c->ac3_lshift_int16 = ff_ac3_lshift_int16_neon; 52 c->ac3_rshift_int32 = ff_ac3_rshift_int32_neon; 53 c->float_to_fixed24 = ff_float_to_fixed24_neon; 54 c->extract_exponents = ff_ac3_extract_exponents_neon; 55 } 56} 57