1/* 2 * AAC data declarations 3 * Copyright (c) 2005-2006 Oded Shimon ( ods15 ods15 dyndns org ) 4 * Copyright (c) 2006-2007 Maxim Gavrilov ( maxim.gavrilov 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/** 24 * @file 25 * AAC data declarations 26 * @author Oded Shimon ( ods15 ods15 dyndns org ) 27 * @author Maxim Gavrilov ( maxim.gavrilov gmail com ) 28 */ 29 30#ifndef AVCODEC_AACTAB_H 31#define AVCODEC_AACTAB_H 32 33#include "libavutil/mem_internal.h" 34#include "aac.h" 35 36#include <stdint.h> 37 38/* NOTE: 39 * Tables in this file are shared by the AAC decoders and encoder 40 */ 41 42extern float ff_aac_pow2sf_tab[428]; 43extern float ff_aac_pow34sf_tab[428]; 44 45void ff_aac_tableinit(void); 46 47/* @name ltp_coef 48 * Table of the LTP coefficients 49 */ 50static const INTFLOAT ltp_coef[8] = { 51 Q30(0.570829), Q30(0.696616), Q30(0.813004), Q30(0.911304), 52 Q30(0.984900), Q30(1.067894), Q30(1.194601), Q30(1.369533), 53}; 54 55/* @name tns_tmp2_map 56 * Tables of the tmp2[] arrays of LPC coefficients used for TNS. 57 * The suffix _M_N[] indicate the values of coef_compress and coef_res 58 * respectively. 59 * @{ 60 */ 61static const INTFLOAT tns_tmp2_map_1_3[4] = { 62 Q31(0.00000000), Q31(-0.43388373), Q31(0.64278758), Q31(0.34202015), 63}; 64 65static const INTFLOAT tns_tmp2_map_0_3[8] = { 66 Q31(0.00000000), Q31(-0.43388373), Q31(-0.78183150), Q31(-0.97492790), 67 Q31(0.98480773), Q31( 0.86602539), Q31( 0.64278758), Q31( 0.34202015), 68}; 69 70static const INTFLOAT tns_tmp2_map_1_4[8] = { 71 Q31(0.00000000), Q31(-0.20791170), Q31(-0.40673664), Q31(-0.58778524), 72 Q31(0.67369562), Q31( 0.52643216), Q31( 0.36124167), Q31( 0.18374951), 73}; 74 75static const INTFLOAT tns_tmp2_map_0_4[16] = { 76 Q31( 0.00000000), Q31(-0.20791170), Q31(-0.40673664), Q31(-0.58778524), 77 Q31(-0.74314481), Q31(-0.86602539), Q31(-0.95105654), Q31(-0.99452192), 78 Q31( 0.99573416), Q31( 0.96182561), Q31( 0.89516330), Q31( 0.79801720), 79 Q31( 0.67369562), Q31( 0.52643216), Q31( 0.36124167), Q31( 0.18374951), 80}; 81 82static const INTFLOAT * const tns_tmp2_map[4] = { 83 tns_tmp2_map_0_3, 84 tns_tmp2_map_0_4, 85 tns_tmp2_map_1_3, 86 tns_tmp2_map_1_4 87}; 88// @} 89 90/* @name window coefficients 91 * @{ 92 */ 93DECLARE_ALIGNED(32, extern float, ff_aac_kbd_long_1024)[1024]; 94DECLARE_ALIGNED(32, extern float, ff_aac_kbd_short_128)[128]; 95DECLARE_ALIGNED(32, extern const float, ff_aac_eld_window_512)[1920]; 96DECLARE_ALIGNED(32, extern const int, ff_aac_eld_window_512_fixed)[1920]; 97DECLARE_ALIGNED(32, extern const float, ff_aac_eld_window_480)[1800]; 98DECLARE_ALIGNED(32, extern const int, ff_aac_eld_window_480_fixed)[1800]; 99// @} 100 101/* Initializes data shared between float decoder and encoder. */ 102void ff_aac_float_common_init(void); 103 104/* @name number of scalefactor window bands for long and short transform windows respectively 105 * @{ 106 */ 107extern const uint8_t ff_aac_num_swb_1024[]; 108extern const uint8_t ff_aac_num_swb_960 []; 109extern const uint8_t ff_aac_num_swb_512 []; 110extern const uint8_t ff_aac_num_swb_480 []; 111extern const uint8_t ff_aac_num_swb_128 []; 112extern const uint8_t ff_aac_num_swb_120 []; 113// @} 114 115extern const uint8_t ff_aac_pred_sfb_max []; 116 117extern const uint32_t ff_aac_scalefactor_code[121]; 118extern const uint8_t ff_aac_scalefactor_bits[121]; 119 120extern const uint16_t * const ff_aac_spectral_codes[11]; 121extern const uint8_t * const ff_aac_spectral_bits [11]; 122extern const uint16_t ff_aac_spectral_sizes[11]; 123 124extern const float *const ff_aac_codebook_vectors[]; 125extern const float *const ff_aac_codebook_vector_vals[]; 126extern const uint16_t *const ff_aac_codebook_vector_idx[]; 127 128extern const uint16_t * const ff_swb_offset_1024[13]; 129extern const uint16_t * const ff_swb_offset_960 [13]; 130extern const uint16_t * const ff_swb_offset_512 [13]; 131extern const uint16_t * const ff_swb_offset_480 [13]; 132extern const uint16_t * const ff_swb_offset_128 [13]; 133extern const uint16_t * const ff_swb_offset_120 [13]; 134 135extern const uint8_t ff_tns_max_bands_1024[13]; 136extern const uint8_t ff_tns_max_bands_512 [13]; 137extern const uint8_t ff_tns_max_bands_480 [13]; 138extern const uint8_t ff_tns_max_bands_128 [13]; 139 140#endif /* AVCODEC_AACTAB_H */ 141