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
22 #include "libavutil/attributes.h"
23 #include "libavcodec/ac3dsp.h"
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 void ff_ac3_extract_exponents_neon(uint8_t *exp, int32_t *coef, int nb_coefs);
33 void ff_ac3_bit_alloc_calc_bap_armv6(int16_t *mask, int16_t *psd,
35 int snr_offset, int floor,
36 const uint8_t *bap_tab, uint8_t *bap);
38 void ff_ac3_update_bap_counts_arm(uint16_t mant_cnt[16], uint8_t *bap, int len);
40 av_cold void ff_ac3dsp_init_arm(AC3DSPContext *c, int bit_exact)
42 c->update_bap_counts = ff_ac3_update_bap_counts_arm;
45 c->bit_alloc_calc_bap = ff_ac3_bit_alloc_calc_bap_armv6;
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;