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
ff_ac3dsp_init_arm(AC3DSPContext * c,int bit_exact)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 }
74