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/*
* MPEG Audio common tables
* copyright (c) 2002 Fabrice Bellard
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* mpeg audio layer common tables.
*/
#include "mpegaudiodata.h"
/*******************************************************/
/* layer 2 tables */
const int ff_mpa_sblimit_table[5] = { 27 , 30 , 8, 12 , 30 };
const int ff_mpa_quant_steps[17] = {
3, 5, 7, 9, 15,
31, 63, 127, 255, 511,
1023, 2047, 4095, 8191, 16383,
32767, 65535
};
/* we use a negative value if grouped */
const int ff_mpa_quant_bits[17] = {
-5, -7, 3, -10, 4,
5, 6, 7, 8, 9,
10, 11, 12, 13, 14,
15, 16
};
/* encoding tables which give the quantization index. Note how it is
possible to store them efficiently ! */
static const unsigned char alloc_table_1[] = {
4, 0, 2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
4, 0, 2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
4, 0, 2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16,
4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16,
4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16,
4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16,
4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16,
4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16,
4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16,
4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16,
3, 0, 1, 2, 3, 4, 5, 16,
3, 0, 1, 2, 3, 4, 5, 16,
3, 0, 1, 2, 3, 4, 5, 16,
3, 0, 1, 2, 3, 4, 5, 16,
3, 0, 1, 2, 3, 4, 5, 16,
3, 0, 1, 2, 3, 4, 5, 16,
3, 0, 1, 2, 3, 4, 5, 16,
3, 0, 1, 2, 3, 4, 5, 16,
3, 0, 1, 2, 3, 4, 5, 16,
3, 0, 1, 2, 3, 4, 5, 16,
3, 0, 1, 2, 3, 4, 5, 16,
3, 0, 1, 2, 3, 4, 5, 16,
2, 0, 1, 16,
2, 0, 1, 16,
2, 0, 1, 16,
2, 0, 1, 16,
2, 0, 1, 16,
2, 0, 1, 16,
2, 0, 1, 16,
};
static const unsigned char alloc_table_3[] = {
4, 0, 1, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
4, 0, 1, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
3, 0, 1, 3, 4, 5, 6, 7,
3, 0, 1, 3, 4, 5, 6, 7,
3, 0, 1, 3, 4, 5, 6, 7,
3, 0, 1, 3, 4, 5, 6, 7,
3, 0, 1, 3, 4, 5, 6, 7,
3, 0, 1, 3, 4, 5, 6, 7,
3, 0, 1, 3, 4, 5, 6, 7,
3, 0, 1, 3, 4, 5, 6, 7,
3, 0, 1, 3, 4, 5, 6, 7,
3, 0, 1, 3, 4, 5, 6, 7,
};
static const unsigned char alloc_table_4[] = {
4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
3, 0, 1, 3, 4, 5, 6, 7,
3, 0, 1, 3, 4, 5, 6, 7,
3, 0, 1, 3, 4, 5, 6, 7,
3, 0, 1, 3, 4, 5, 6, 7,
3, 0, 1, 3, 4, 5, 6, 7,
3, 0, 1, 3, 4, 5, 6, 7,
3, 0, 1, 3, 4, 5, 6, 7,
2, 0, 1, 3,
2, 0, 1, 3,
2, 0, 1, 3,
2, 0, 1, 3,
2, 0, 1, 3,
2, 0, 1, 3,
2, 0, 1, 3,
2, 0, 1, 3,
2, 0, 1, 3,
2, 0, 1, 3,
2, 0, 1, 3,
2, 0, 1, 3,
2, 0, 1, 3,
2, 0, 1, 3,
2, 0, 1, 3,
2, 0, 1, 3,
2, 0, 1, 3,
2, 0, 1, 3,
2, 0, 1, 3,
};
const unsigned char * const ff_mpa_alloc_tables[5] =
{ alloc_table_1, alloc_table_1, alloc_table_3, alloc_table_3, alloc_table_4, };