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  1. /*
  2.  * Header file for hardcoded AAC tables
  3.  *
  4.  * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
  5.  *
  6.  * This file is part of FFmpeg.
  7.  *
  8.  * FFmpeg is free software; you can redistribute it and/or
  9.  * modify it under the terms of the GNU Lesser General Public
  10.  * License as published by the Free Software Foundation; either
  11.  * version 2.1 of the License, or (at your option) any later version.
  12.  *
  13.  * FFmpeg is distributed in the hope that it will be useful,
  14.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16.  * Lesser General Public License for more details.
  17.  *
  18.  * You should have received a copy of the GNU Lesser General Public
  19.  * License along with FFmpeg; if not, write to the Free Software
  20.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21.  */
  22.  
  23. #ifndef AVCODEC_AAC_TABLEGEN_H
  24. #define AVCODEC_AAC_TABLEGEN_H
  25.  
  26. #include "aac_tablegen_decl.h"
  27.  
  28. #if CONFIG_HARDCODED_TABLES
  29. #include "libavcodec/aac_tables.h"
  30. #else
  31. #include "libavutil/mathematics.h"
  32. float ff_aac_pow2sf_tab[428];
  33.  
  34. void ff_aac_tableinit(void)
  35. {
  36.     int i;
  37.     for (i = 0; i < 428; i++)
  38.         ff_aac_pow2sf_tab[i] = pow(2, (i - POW_SF2_ZERO) / 4.0);
  39. }
  40. #endif /* CONFIG_HARDCODED_TABLES */
  41.  
  42. #endif /* AVCODEC_AAC_TABLEGEN_H */
  43.