Statistics
| Branch: | Revision:

ffmpeg / libavcodec / arm / ac3dsp_init_arm.c @ aa05f212

History | View | Annotate | Download (2.16 KB)

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

    
26
void ff_ac3_exponent_min_neon(uint8_t *exp, int num_reuse_blocks, int nb_coefs);
27
int ff_ac3_max_msb_abs_int16_neon(const int16_t *src, int len);
28
void ff_ac3_lshift_int16_neon(int16_t *src, unsigned len, unsigned shift);
29
void ff_ac3_rshift_int32_neon(int32_t *src, unsigned len, unsigned shift);
30
void ff_float_to_fixed24_neon(int32_t *dst, const float *src, unsigned int len);
31

    
32
void ff_ac3_bit_alloc_calc_bap_armv6(int16_t *mask, int16_t *psd,
33
                                     int start, int end,
34
                                     int snr_offset, int floor,
35
                                     const uint8_t *bap_tab, uint8_t *bap);
36

    
37
int ff_ac3_compute_mantissa_size_arm(int cnt[5], uint8_t *bap, int nb_coefs);
38

    
39
av_cold void ff_ac3dsp_init_arm(AC3DSPContext *c, int bit_exact)
40
{
41
    c->compute_mantissa_size     = ff_ac3_compute_mantissa_size_arm;
42

    
43
    if (HAVE_ARMV6) {
44
        c->bit_alloc_calc_bap    = ff_ac3_bit_alloc_calc_bap_armv6;
45
    }
46

    
47
    if (HAVE_NEON) {
48
        c->ac3_exponent_min      = ff_ac3_exponent_min_neon;
49
        c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_neon;
50
        c->ac3_lshift_int16      = ff_ac3_lshift_int16_neon;
51
        c->ac3_rshift_int32      = ff_ac3_rshift_int32_neon;
52
        c->float_to_fixed24      = ff_float_to_fixed24_neon;
53
    }
54
}