| 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 | |
| 28 | void ff_ac3_exponent_min_neon(uint8_t *exp, int num_reuse_blocks, int nb_coefs); |
| 29 | int ff_ac3_max_msb_abs_int16_neon(const int16_t *src, int len); |
| 30 | void ff_ac3_lshift_int16_neon(int16_t *src, unsigned len, unsigned shift); |
| 31 | void ff_ac3_rshift_int32_neon(int32_t *src, unsigned len, unsigned shift); |
| 32 | void ff_float_to_fixed24_neon(int32_t *dst, const float *src, unsigned int len); |
| 33 | void ff_ac3_extract_exponents_neon(uint8_t *exp, int32_t *coef, int nb_coefs); |
| 34 | void ff_apply_window_int16_neon(int16_t *dst, const int16_t *src, |
| 35 | const int16_t *window, unsigned n); |
| 36 | void ff_ac3_sum_square_butterfly_int32_neon(int64_t sum[4], |
| 37 | const int32_t *coef0, |
| 38 | const int32_t *coef1, |
| 39 | int len); |
| 40 | void ff_ac3_sum_square_butterfly_float_neon(float sum[4], |
| 41 | const float *coef0, |
| 42 | const float *coef1, |
| 43 | int len); |
| 44 | |
| 45 | void 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 | |
| 50 | void ff_ac3_update_bap_counts_arm(uint16_t mant_cnt[16], uint8_t *bap, int len); |
| 51 | |
| 52 | av_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 | } |