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60 lines
2.4 KiB
60 lines
2.4 KiB
/* |
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* Copyright (c) 2011 Mans Rullgard <mans@mansr.com> |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include <stdint.h> |
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#include "libavutil/arm/cpu.h" |
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#include "libavutil/attributes.h" |
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#include "libavcodec/ac3dsp.h" |
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#include "config.h" |
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void ff_ac3_exponent_min_neon(uint8_t *exp, int num_reuse_blocks, int nb_coefs); |
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int ff_ac3_max_msb_abs_int16_neon(const int16_t *src, int len); |
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void ff_ac3_lshift_int16_neon(int16_t *src, unsigned len, unsigned shift); |
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void ff_ac3_rshift_int32_neon(int32_t *src, unsigned len, unsigned shift); |
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void ff_float_to_fixed24_neon(int32_t *dst, const float *src, unsigned int len); |
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void ff_ac3_extract_exponents_neon(uint8_t *exp, int32_t *coef, int nb_coefs); |
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void ff_ac3_bit_alloc_calc_bap_armv6(int16_t *mask, int16_t *psd, |
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int start, int end, |
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int snr_offset, int floor, |
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const uint8_t *bap_tab, uint8_t *bap); |
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void ff_ac3_update_bap_counts_arm(uint16_t mant_cnt[16], uint8_t *bap, int len); |
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av_cold void ff_ac3dsp_init_arm(AC3DSPContext *c, int bit_exact) |
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{ |
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int cpu_flags = av_get_cpu_flags(); |
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c->update_bap_counts = ff_ac3_update_bap_counts_arm; |
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if (have_armv6(cpu_flags)) { |
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c->bit_alloc_calc_bap = ff_ac3_bit_alloc_calc_bap_armv6; |
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} |
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if (have_neon(cpu_flags)) { |
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c->ac3_exponent_min = ff_ac3_exponent_min_neon; |
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c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_neon; |
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c->ac3_lshift_int16 = ff_ac3_lshift_int16_neon; |
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c->ac3_rshift_int32 = ff_ac3_rshift_int32_neon; |
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c->float_to_fixed24 = ff_float_to_fixed24_neon; |
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c->extract_exponents = ff_ac3_extract_exponents_neon; |
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} |
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}
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