FFmpeg  4.4.6
ac3dsp_init_arm.c
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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 void ff_float_to_fixed24_neon(int32_t *dst, const float *src, unsigned int len);
30 void ff_ac3_extract_exponents_neon(uint8_t *exp, int32_t *coef, int nb_coefs);
32  const int32_t *coef0,
33  const int32_t *coef1,
34  int len);
36  const float *coef0,
37  const float *coef1,
38  int len);
39 
40 void 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 
45 void ff_ac3_update_bap_counts_arm(uint16_t mant_cnt[16], uint8_t *bap, int len);
46 
48 {
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 }
#define have_neon(flags)
Definition: cpu.h:26
void ff_ac3_extract_exponents_neon(uint8_t *exp, int32_t *coef, int nb_coefs)
void ff_ac3_bit_alloc_calc_bap_armv6(int16_t *mask, int16_t *psd, int start, int end, int snr_offset, int floor, const uint8_t *bap_tab, uint8_t *bap)
void ff_ac3_sum_square_butterfly_int32_neon(int64_t sum[4], const int32_t *coef0, const int32_t *coef1, int len)
void ff_float_to_fixed24_neon(int32_t *dst, const float *src, unsigned int len)
av_cold void ff_ac3dsp_init_arm(AC3DSPContext *c, int bit_exact)
void ff_ac3_sum_square_butterfly_float_neon(float sum[4], const float *coef0, const float *coef1, int len)
void ff_ac3_update_bap_counts_arm(uint16_t mant_cnt[16], uint8_t *bap, int len)
void ff_ac3_exponent_min_neon(uint8_t *exp, int num_reuse_blocks, int nb_coefs)
#define have_armv6(flags)
Definition: cpu.h:26
Macro definitions for various function/variable attributes.
#define av_cold
Definition: attributes.h:88
uint8_t
int32_t
long long int64_t
Definition: coverity.c:34
static atomic_int cpu_flags
Definition: cpu.c:50
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:95
static __device__ float floor(float a)
Definition: cuda_runtime.h:173
static const uint8_t bap_tab[64]
Definition: dolby_e.c:589
int8_t exp
Definition: eval.c:72
static const uint16_t mask[17]
Definition: lzw.c:38
#define src
Definition: vp8dsp.c:255
int len
static double c[64]