git.sesse.net Git - ffmpeg/blob - libavcodec/arm/ac3dsp_init_arm.c

   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
  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 }