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);
29void ff_float_to_fixed24_neon(int32_t *dst, const float *src, unsigned int len);
30void ff_ac3_extract_exponents_neon(uint8_t *exp, int32_t *coef, int nb_coefs);
31void ff_ac3_sum_square_butterfly_int32_neon(int64_t sum[4],
32                                            const int32_t *coef0,
33                                            const int32_t *coef1,
34                                            int len);
35void ff_ac3_sum_square_butterfly_float_neon(float sum[4],
36                                            const float *coef0,
37                                            const float *coef1,
38                                            int len);
39
40void ff_ac3_bit_alloc_calc_bap_armv6(int16_t *mask, int16_t *psd,
41                                     int start, int end,
42                                     int snr_offset, int floor,
43                                     const uint8_t *bap_tab, uint8_t *bap);
44
45void ff_ac3_update_bap_counts_arm(uint16_t mant_cnt[16], uint8_t *bap, int len);
46
47av_cold void ff_ac3dsp_init_arm(AC3DSPContext *c, int bit_exact)
48{
49    int cpu_flags = av_get_cpu_flags();
50
51    c->update_bap_counts         = ff_ac3_update_bap_counts_arm;
52
53    if (have_armv6(cpu_flags)) {
54        c->bit_alloc_calc_bap    = ff_ac3_bit_alloc_calc_bap_armv6;
55    }
56
57    if (have_neon(cpu_flags)) {
58        c->ac3_exponent_min      = ff_ac3_exponent_min_neon;
59        c->float_to_fixed24      = ff_float_to_fixed24_neon;
60        c->extract_exponents     = ff_ac3_extract_exponents_neon;
61        c->sum_square_butterfly_int32 = ff_ac3_sum_square_butterfly_int32_neon;
62        c->sum_square_butterfly_float = ff_ac3_sum_square_butterfly_float_neon;
63    }
64}
65