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 )
6 * This file is part of FFmpeg.
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.
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.
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
25 * AAC data declarations
26 * @author Oded Shimon ( ods15 ods15 dyndns org )
27 * @author Maxim Gavrilov ( maxim.gavrilov gmail com )
30 #ifndef AVCODEC_AACTAB_H
31 #define AVCODEC_AACTAB_H
33 #include "libavutil/mem.h"
35 #include "aac_tablegen_decl.h"
40 * Tables in this file are used by the AAC decoder and will be used by the AAC
45 * Table of the LTP coefficients
47 static const INTFLOAT ltp_coef[8] = {
48 Q30(0.570829f), Q30(0.696616f), Q30(0.813004f), Q30(0.911304f),
49 Q30(0.984900f), Q30(1.067894f), Q30(1.194601f), Q30(1.369533f),
53 * Tables of the tmp2[] arrays of LPC coefficients used for TNS.
54 * The suffix _M_N[] indicate the values of coef_compress and coef_res
58 static const INTFLOAT tns_tmp2_map_1_3[4] = {
59 Q31(0.00000000f), Q31(-0.43388373f), Q31(0.64278758f), Q31(0.34202015f),
62 static const INTFLOAT tns_tmp2_map_0_3[8] = {
63 Q31(0.00000000f), Q31(-0.43388373f), Q31(-0.78183150f), Q31(-0.97492790f),
64 Q31(0.98480773f), Q31( 0.86602539f), Q31( 0.64278758f), Q31( 0.34202015f),
67 static const INTFLOAT tns_tmp2_map_1_4[8] = {
68 Q31(0.00000000f), Q31(-0.20791170f), Q31(-0.40673664f), Q31(-0.58778524f),
69 Q31(0.67369562f), Q31( 0.52643216f), Q31( 0.36124167f), Q31( 0.18374951f),
72 static const INTFLOAT tns_tmp2_map_0_4[16] = {
73 Q31( 0.00000000f), Q31(-0.20791170f), Q31(-0.40673664f), Q31(-0.58778524f),
74 Q31(-0.74314481f), Q31(-0.86602539f), Q31(-0.95105654f), Q31(-0.99452192f),
75 Q31( 0.99573416f), Q31( 0.96182561f), Q31( 0.89516330f), Q31( 0.79801720f),
76 Q31( 0.67369562f), Q31( 0.52643216f), Q31( 0.36124167f), Q31( 0.18374951f),
79 static const INTFLOAT * const tns_tmp2_map[4] = {
87 /* @name window coefficients
90 DECLARE_ALIGNED(32, extern float, ff_aac_kbd_long_1024)[1024];
91 DECLARE_ALIGNED(32, extern float, ff_aac_kbd_short_128)[128];
92 DECLARE_ALIGNED(32, extern int, ff_aac_kbd_long_1024_fixed)[1024];
93 DECLARE_ALIGNED(32, extern int, ff_aac_kbd_long_512_fixed)[512];
94 DECLARE_ALIGNED(32, extern int, ff_aac_kbd_short_128_fixed)[128];
95 const DECLARE_ALIGNED(32, extern float, ff_aac_eld_window_512)[1920];
96 const DECLARE_ALIGNED(32, extern int, ff_aac_eld_window_512_fixed)[1920];
97 const DECLARE_ALIGNED(32, extern float, ff_aac_eld_window_480)[1800];
98 const DECLARE_ALIGNED(32, extern int, ff_aac_eld_window_480_fixed)[1800];
101 /* @name number of scalefactor window bands for long and short transform windows respectively
104 extern const uint8_t ff_aac_num_swb_1024[];
105 extern const uint8_t ff_aac_num_swb_512 [];
106 extern const uint8_t ff_aac_num_swb_480 [];
107 extern const uint8_t ff_aac_num_swb_128 [];
110 extern const uint8_t ff_aac_pred_sfb_max [];
112 extern const uint32_t ff_aac_scalefactor_code[121];
113 extern const uint8_t ff_aac_scalefactor_bits[121];
115 extern const uint16_t * const ff_aac_spectral_codes[11];
116 extern const uint8_t * const ff_aac_spectral_bits [11];
117 extern const uint16_t ff_aac_spectral_sizes[11];
119 extern const float *ff_aac_codebook_vectors[];
120 extern const float *ff_aac_codebook_vector_vals[];
121 extern const uint16_t *ff_aac_codebook_vector_idx[];
123 extern const uint16_t * const ff_swb_offset_1024[13];
124 extern const uint16_t * const ff_swb_offset_512 [13];
125 extern const uint16_t * const ff_swb_offset_480 [13];
126 extern const uint16_t * const ff_swb_offset_128 [13];
128 extern const uint8_t ff_tns_max_bands_1024[13];
129 extern const uint8_t ff_tns_max_bands_512 [13];
130 extern const uint8_t ff_tns_max_bands_480 [13];
131 extern const uint8_t ff_tns_max_bands_128 [13];
133 #endif /* AVCODEC_AACTAB_H */