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https://gitee.com/openharmony/third_party_ffmpeg
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331c1e7494
This commit moves the generation of ff_aac_pow34sf_tab[] out of the encoder and into the table generator. The original commit log for this table in 2011 actually mentions that it should be moved outside but this never happened. This is the first commit which cleans up the encoder a little. Reviewed-by: Claudio Freire <klaussfreire@gmail.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
46 lines
1.4 KiB
C
46 lines
1.4 KiB
C
/*
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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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