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ffmpeg / libavcodec / arm / ac3dsp_init_arm.c @ 5f2e6c0f

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/*
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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/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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int ff_ac3_compute_mantissa_size_arm(int cnt[5], uint8_t *bap, int nb_coefs);
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av_cold void ff_ac3dsp_init_arm(AC3DSPContext *c, int bit_exact)
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{
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    c->compute_mantissa_size     = ff_ac3_compute_mantissa_size_arm;
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    if (HAVE_ARMV6) {
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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) {
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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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}