forked from KolibriOS/kolibrios
46 lines
1.4 KiB
C
46 lines
1.4 KiB
C
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/*
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* Header file for hardcoded AAC tables
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*
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* Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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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#ifndef AVCODEC_AAC_TABLEGEN_H
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#define AVCODEC_AAC_TABLEGEN_H
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#include "aac_tablegen_decl.h"
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#if CONFIG_HARDCODED_TABLES
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#include "libavcodec/aac_tables.h"
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#else
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#include "libavutil/mathematics.h"
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float ff_aac_pow2sf_tab[428];
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float ff_aac_pow34sf_tab[428];
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av_cold void ff_aac_tableinit(void)
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{
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int i;
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for (i = 0; i < 428; i++) {
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ff_aac_pow2sf_tab[i] = pow(2, (i - POW_SF2_ZERO) / 4.0);
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ff_aac_pow34sf_tab[i] = pow(ff_aac_pow2sf_tab[i], 3.0/4.0);
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}
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}
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#endif /* CONFIG_HARDCODED_TABLES */
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#endif /* AVCODEC_AAC_TABLEGEN_H */
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