FFmpeg
aactab.h
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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_defines.h"
35 
36 #include <stdint.h>
37 
38 /* NOTE:
39  * Tables in this file are shared by the AAC decoders and encoder
40  */
41 
42 extern float ff_aac_pow2sf_tab[428];
43 extern float ff_aac_pow34sf_tab[428];
44 
45 /* @name ltp_coef
46  * Table of the LTP coefficients
47  */
48 static const INTFLOAT ltp_coef[8] = {
49  Q30(0.570829), Q30(0.696616), Q30(0.813004), Q30(0.911304),
50  Q30(0.984900), Q30(1.067894), Q30(1.194601), Q30(1.369533),
51 };
52 
53 /* @name tns_tmp2_map
54  * Tables of the tmp2[] arrays of LPC coefficients used for TNS.
55  * The suffix _M_N[] indicate the values of coef_compress and coef_res
56  * respectively.
57  * @{
58  */
59 static const INTFLOAT tns_tmp2_map_1_3[4] = {
60  Q31(0.00000000), Q31(-0.43388373), Q31(0.64278758), Q31(0.34202015),
61 };
62 
63 static const INTFLOAT tns_tmp2_map_0_3[8] = {
64  Q31(0.00000000), Q31(-0.43388373), Q31(-0.78183150), Q31(-0.97492790),
65  Q31(0.98480773), Q31( 0.86602539), Q31( 0.64278758), Q31( 0.34202015),
66 };
67 
68 static const INTFLOAT tns_tmp2_map_1_4[8] = {
69  Q31(0.00000000), Q31(-0.20791170), Q31(-0.40673664), Q31(-0.58778524),
70  Q31(0.67369562), Q31( 0.52643216), Q31( 0.36124167), Q31( 0.18374951),
71 };
72 
73 static const INTFLOAT tns_tmp2_map_0_4[16] = {
74  Q31( 0.00000000), Q31(-0.20791170), Q31(-0.40673664), Q31(-0.58778524),
75  Q31(-0.74314481), Q31(-0.86602539), Q31(-0.95105654), Q31(-0.99452192),
76  Q31( 0.99573416), Q31( 0.96182561), Q31( 0.89516330), Q31( 0.79801720),
77  Q31( 0.67369562), Q31( 0.52643216), Q31( 0.36124167), Q31( 0.18374951),
78 };
79 
80 static const INTFLOAT * const tns_tmp2_map[4] = {
85 };
86 // @}
87 
88 /* @name window coefficients
89  * @{
90  */
91 DECLARE_ALIGNED(32, extern float, ff_aac_kbd_long_1024)[1024];
92 DECLARE_ALIGNED(32, extern float, ff_aac_kbd_short_128)[128];
93 DECLARE_ALIGNED(32, extern const float, ff_aac_eld_window_512)[1920];
94 DECLARE_ALIGNED(32, extern const int, ff_aac_eld_window_512_fixed)[1920];
95 DECLARE_ALIGNED(32, extern const float, ff_aac_eld_window_480)[1800];
96 DECLARE_ALIGNED(32, extern const int, ff_aac_eld_window_480_fixed)[1800];
97 // @}
98 
99 /* Initializes data shared between float decoder and encoder. */
100 void ff_aac_float_common_init(void);
101 
102 /* @name number of scalefactor window bands for long and short transform windows respectively
103  * @{
104  */
105 extern const uint8_t ff_aac_num_swb_1024[];
106 extern const uint8_t ff_aac_num_swb_960 [];
107 extern const uint8_t ff_aac_num_swb_512 [];
108 extern const uint8_t ff_aac_num_swb_480 [];
109 extern const uint8_t ff_aac_num_swb_128 [];
110 extern const uint8_t ff_aac_num_swb_120 [];
111 // @}
112 
113 extern const uint8_t ff_aac_pred_sfb_max [];
114 
115 extern const uint32_t ff_aac_scalefactor_code[121];
116 extern const uint8_t ff_aac_scalefactor_bits[121];
117 
118 extern const uint16_t * const ff_aac_spectral_codes[11];
119 extern const uint8_t * const ff_aac_spectral_bits [11];
120 extern const uint16_t ff_aac_spectral_sizes[11];
121 
122 extern const float *const ff_aac_codebook_vectors[];
123 extern const float *const ff_aac_codebook_vector_vals[];
124 extern const uint16_t *const ff_aac_codebook_vector_idx[];
125 
126 extern const uint16_t * const ff_swb_offset_1024[13];
127 extern const uint16_t * const ff_swb_offset_960 [13];
128 extern const uint16_t * const ff_swb_offset_512 [13];
129 extern const uint16_t * const ff_swb_offset_480 [13];
130 extern const uint16_t * const ff_swb_offset_128 [13];
131 extern const uint16_t * const ff_swb_offset_120 [13];
132 
133 extern const uint8_t ff_tns_max_bands_1024[13];
134 extern const uint8_t ff_tns_max_bands_512 [13];
135 extern const uint8_t ff_tns_max_bands_480 [13];
136 extern const uint8_t ff_tns_max_bands_128 [13];
137 
138 #endif /* AVCODEC_AACTAB_H */
ff_aac_pred_sfb_max
const uint8_t ff_aac_pred_sfb_max[]
Definition: aactab.c:134
ff_aac_kbd_short_128
float ff_aac_kbd_short_128[128]
mem_internal.h
ff_swb_offset_1024
const uint16_t *const ff_swb_offset_1024[13]
Definition: aactab.c:1394
ff_aac_num_swb_960
const uint8_t ff_aac_num_swb_960[]
Definition: aactab.c:114
ff_aac_spectral_codes
const uint16_t *const ff_aac_spectral_codes[11]
Definition: aactab.c:482
ff_aac_eld_window_512_fixed
const int ff_aac_eld_window_512_fixed[1920]
Definition: aactab.c:1953
ff_aac_eld_window_512
const float ff_aac_eld_window_512[1920]
Definition: aactab.c:1469
ff_aac_spectral_sizes
const uint16_t ff_aac_spectral_sizes[11]
Definition: aactab.c:492
ltp_coef
static const INTFLOAT ltp_coef[8]
Definition: aactab.h:48
ff_swb_offset_960
const uint16_t *const ff_swb_offset_960[13]
Definition: aactab.c:1402
ff_aac_num_swb_480
const uint8_t ff_aac_num_swb_480[]
Definition: aactab.c:122
ff_aac_scalefactor_code
const uint32_t ff_aac_scalefactor_code[121]
Definition: aactab.c:138
ff_tns_max_bands_128
const uint8_t ff_tns_max_bands_128[13]
Definition: aactab.c:1464
ff_tns_max_bands_1024
const uint8_t ff_tns_max_bands_1024[13]
Definition: aactab.c:1452
tns_tmp2_map_1_3
static const INTFLOAT tns_tmp2_map_1_3[4]
Definition: aactab.h:59
ff_tns_max_bands_512
const uint8_t ff_tns_max_bands_512[13]
Definition: aactab.c:1456
ff_aac_num_swb_120
const uint8_t ff_aac_num_swb_120[]
Definition: aactab.c:130
ff_aac_eld_window_480_fixed
const int ff_aac_eld_window_480_fixed[1800]
Definition: aactab.c:2889
tns_tmp2_map_0_4
static const INTFLOAT tns_tmp2_map_0_4[16]
Definition: aactab.h:73
ff_aac_pow34sf_tab
float ff_aac_pow34sf_tab[428]
ff_tns_max_bands_480
const uint8_t ff_tns_max_bands_480[13]
Definition: aactab.c:1460
DECLARE_ALIGNED
#define DECLARE_ALIGNED(n, t, v)
Definition: mem_internal.h:87
ff_aac_float_common_init
void ff_aac_float_common_init(void)
ff_aac_codebook_vector_vals
const float *const ff_aac_codebook_vector_vals[]
Definition: aactab.c:1139
tns_tmp2_map_1_4
static const INTFLOAT tns_tmp2_map_1_4[8]
Definition: aactab.h:68
ff_aac_codebook_vectors
const float *const ff_aac_codebook_vectors[]
Definition: aactab.c:983
ff_aac_scalefactor_bits
const uint8_t ff_aac_scalefactor_bits[121]
Definition: aactab.c:157
ff_aac_num_swb_128
const uint8_t ff_aac_num_swb_128[]
Definition: aactab.c:126
ff_swb_offset_128
const uint16_t *const ff_swb_offset_128[13]
Definition: aactab.c:1426
ff_aac_spectral_bits
const uint8_t *const ff_aac_spectral_bits[11]
Definition: aactab.c:487
ff_swb_offset_512
const uint16_t *const ff_swb_offset_512[13]
Definition: aactab.c:1410
ff_swb_offset_480
const uint16_t *const ff_swb_offset_480[13]
Definition: aactab.c:1418
ff_aac_kbd_long_1024
float ff_aac_kbd_long_1024[1024]
ff_aac_num_swb_512
const uint8_t ff_aac_num_swb_512[]
Definition: aactab.c:118
ff_swb_offset_120
const uint16_t *const ff_swb_offset_120[13]
Definition: aactab.c:1436
ff_aac_eld_window_480
const float ff_aac_eld_window_480[1800]
Definition: aactab.c:2436
Q31
#define Q31(x)
Definition: aac_defines.h:90
ff_aac_num_swb_1024
const uint8_t ff_aac_num_swb_1024[]
Definition: aactab.c:110
aac_defines.h
tns_tmp2_map
static const INTFLOAT *const tns_tmp2_map[4]
Definition: aactab.h:80
ff_aac_pow2sf_tab
float ff_aac_pow2sf_tab[428]
tns_tmp2_map_0_3
static const INTFLOAT tns_tmp2_map_0_3[8]
Definition: aactab.h:63
INTFLOAT
float INTFLOAT
Definition: aac_defines.h:80
ff_aac_codebook_vector_idx
const uint16_t *const ff_aac_codebook_vector_idx[]
Definition: aactab.c:1148
Q30
#define Q30(x)
Definition: aac_defines.h:89