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