FFmpeg: libavcodec/aac_tablegen.h Source File

00001 /*
00002  * Header file for hardcoded AAC tables
00003  *
00004  * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
00005  *
00006  * This file is part of FFmpeg.
00007  *
00008  * FFmpeg is free software; you can redistribute it and/or
00009  * modify it under the terms of the GNU Lesser General Public
00010  * License as published by the Free Software Foundation; either
00011  * version 2.1 of the License, or (at your option) any later version.
00012  *
00013  * FFmpeg is distributed in the hope that it will be useful,
00014  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00015  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00016  * Lesser General Public License for more details.
00017  *
00018  * You should have received a copy of the GNU Lesser General Public
00019  * License along with FFmpeg; if not, write to the Free Software
00020  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00021  */
00022 
00023 #ifndef AVCODEC_AAC_TABLEGEN_H
00024 #define AVCODEC_AAC_TABLEGEN_H
00025 
00026 #include "aac_tablegen_decl.h"
00027 
00028 #if CONFIG_HARDCODED_TABLES
00029 #include "libavcodec/aac_tables.h"
00030 #else
00031 #include "libavutil/mathematics.h"
00032 #include "aac.h"
00033 float ff_aac_pow2sf_tab[428];
00034 
00035 void ff_aac_tableinit(void)
00036 {
00037     int i;
00038     for (i = 0; i < 428; i++)
00039         ff_aac_pow2sf_tab[i] = pow(2, (i - POW_SF2_ZERO) / 4.);
00040 }
00041 #endif /* CONFIG_HARDCODED_TABLES */
00042 
00043 #endif /* AVCODEC_AAC_TABLEGEN_H */