| /* |
| * 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. |
| */ |
| |
| #ifndef AVCODEC_MPEGAUDIODATA_H |
| #define AVCODEC_MPEGAUDIODATA_H |
| |
| #include <stdint.h> |
| |
| #include "config.h" |
| |
| #include "internal.h" |
| #include "vlc.h" |
| |
| #define MODE_EXT_MS_STEREO 2 |
| #define MODE_EXT_I_STEREO 1 |
| |
| extern av_export_avcodec const uint16_t avpriv_mpa_bitrate_tab[2][3][15]; |
| extern av_export_avcodec const uint16_t avpriv_mpa_freq_tab[3]; |
| extern const int ff_mpa_sblimit_table[5]; |
| extern const int ff_mpa_quant_steps[17]; |
| extern const int ff_mpa_quant_bits[17]; |
| extern const unsigned char * const ff_mpa_alloc_tables[5]; |
| |
| #define TABLE_4_3_SIZE ((8191 + 16)*4) |
| #if CONFIG_HARDCODED_TABLES |
| extern const int8_t ff_table_4_3_exp [TABLE_4_3_SIZE]; |
| extern const uint32_t ff_table_4_3_value[TABLE_4_3_SIZE]; |
| #else |
| extern int8_t ff_table_4_3_exp [TABLE_4_3_SIZE]; |
| extern uint32_t ff_table_4_3_value[TABLE_4_3_SIZE]; |
| #endif |
| |
| /* VLCs for decoding layer 3 huffman tables */ |
| extern VLC ff_huff_vlc[16]; |
| extern VLC ff_huff_quad_vlc[2]; |
| |
| /* layer3 scale factor size */ |
| extern const uint8_t ff_slen_table[2][16]; |
| /* number of lsf scale factors for a given size */ |
| extern const uint8_t ff_lsf_nsf_table[6][3][4]; |
| extern const uint8_t ff_mpa_huff_data[32][2]; |
| |
| /* band size tables */ |
| extern const uint8_t ff_band_size_long[9][22]; |
| extern const uint8_t ff_band_size_short[9][13]; |
| /* computed from ff_band_size_long */ |
| extern uint16_t ff_band_index_long[9][23]; |
| |
| extern int16_t *const ff_division_tabs[4]; |
| |
| /* lower 2 bits: modulo 3, higher bits: shift */ |
| extern uint16_t ff_scale_factor_modshift[64]; |
| |
| extern const uint8_t ff_mpa_pretab[2][22]; |
| |
| /* Initialize tables shared between the fixed and |
| * floating point MPEG audio decoders. */ |
| void ff_mpegaudiodec_common_init_static(void); |
| |
| #endif /* AVCODEC_MPEGAUDIODATA_H */ |