2 * Copyright (c) 2011 Mans Rullgard <mans@mansr.com>
4 * This file is part of FFmpeg.
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.
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.
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
23 #include "libavutil/arm/cpu.h"
24 #include "libavutil/attributes.h"
25 #include "libavcodec/ac3dsp.h"
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],
40 void ff_ac3_sum_square_butterfly_float_neon(float sum
[4],
45 void ff_ac3_bit_alloc_calc_bap_armv6(int16_t *mask
, int16_t *psd
,
47 int snr_offset
, int floor
,
48 const uint8_t *bap_tab
, uint8_t *bap
);
50 void ff_ac3_update_bap_counts_arm(uint16_t mant_cnt
[16], uint8_t *bap
, int len
);
52 av_cold
void ff_ac3dsp_init_arm(AC3DSPContext
*c
, int bit_exact
)
54 int cpu_flags
= av_get_cpu_flags();
56 c
->update_bap_counts
= ff_ac3_update_bap_counts_arm
;
58 if (have_armv6(cpu_flags
)) {
59 c
->bit_alloc_calc_bap
= ff_ac3_bit_alloc_calc_bap_armv6
;
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
;