Libav 0.7.1
|
00001 /* 00002 * Copyright (c) 2011 Mans Rullgard <mans@mansr.com> 00003 * 00004 * This file is part of Libav. 00005 * 00006 * Libav is free software; you can redistribute it and/or 00007 * modify it under the terms of the GNU Lesser General Public 00008 * License as published by the Free Software Foundation; either 00009 * version 2.1 of the License, or (at your option) any later version. 00010 * 00011 * Libav is distributed in the hope that it will be useful, 00012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00014 * Lesser General Public License for more details. 00015 * 00016 * You should have received a copy of the GNU Lesser General Public 00017 * License along with Libav; if not, write to the Free Software 00018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00019 */ 00020 00021 #include <stdint.h> 00022 #include "libavutil/attributes.h" 00023 #include "libavcodec/ac3dsp.h" 00024 #include "config.h" 00025 00026 void ff_ac3_exponent_min_neon(uint8_t *exp, int num_reuse_blocks, int nb_coefs); 00027 int ff_ac3_max_msb_abs_int16_neon(const int16_t *src, int len); 00028 void ff_ac3_lshift_int16_neon(int16_t *src, unsigned len, unsigned shift); 00029 void ff_ac3_rshift_int32_neon(int32_t *src, unsigned len, unsigned shift); 00030 void ff_float_to_fixed24_neon(int32_t *dst, const float *src, unsigned int len); 00031 void ff_ac3_extract_exponents_neon(uint8_t *exp, int32_t *coef, int nb_coefs); 00032 00033 void ff_ac3_bit_alloc_calc_bap_armv6(int16_t *mask, int16_t *psd, 00034 int start, int end, 00035 int snr_offset, int floor, 00036 const uint8_t *bap_tab, uint8_t *bap); 00037 00038 void ff_ac3_update_bap_counts_arm(uint16_t mant_cnt[16], uint8_t *bap, int len); 00039 00040 av_cold void ff_ac3dsp_init_arm(AC3DSPContext *c, int bit_exact) 00041 { 00042 c->update_bap_counts = ff_ac3_update_bap_counts_arm; 00043 00044 if (HAVE_ARMV6) { 00045 c->bit_alloc_calc_bap = ff_ac3_bit_alloc_calc_bap_armv6; 00046 } 00047 00048 if (HAVE_NEON) { 00049 c->ac3_exponent_min = ff_ac3_exponent_min_neon; 00050 c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_neon; 00051 c->ac3_lshift_int16 = ff_ac3_lshift_int16_neon; 00052 c->ac3_rshift_int32 = ff_ac3_rshift_int32_neon; 00053 c->float_to_fixed24 = ff_float_to_fixed24_neon; 00054 c->extract_exponents = ff_ac3_extract_exponents_neon; 00055 } 00056 }