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.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 void ff_aac_tableinit(void);
46 
47 /* @name ltp_coef
48  * Table of the LTP coefficients
49  */
50 static 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  */
61 static const INTFLOAT tns_tmp2_map_1_3[4] = {
62  Q31(0.00000000), Q31(-0.43388373), Q31(0.64278758), Q31(0.34202015),
63 };
64 
65 static 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 
70 static 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 
75 static 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 
82 static const INTFLOAT * const tns_tmp2_map[4] = {
87 };
88 // @}
89 
90 /* @name window coefficients
91  * @{
92  */
93 DECLARE_ALIGNED(32, extern float, ff_aac_kbd_long_1024)[1024];
94 DECLARE_ALIGNED(32, extern float, ff_aac_kbd_short_128)[128];
95 DECLARE_ALIGNED(32, extern const float, ff_aac_eld_window_512)[1920];
96 DECLARE_ALIGNED(32, extern const int, ff_aac_eld_window_512_fixed)[1920];
97 DECLARE_ALIGNED(32, extern const float, ff_aac_eld_window_480)[1800];
98 DECLARE_ALIGNED(32, extern const int, ff_aac_eld_window_480_fixed)[1800];
99 // @}
100 
101 /* Initializes data shared between float decoder and encoder. */
102 void ff_aac_float_common_init(void);
103 
104 /* @name number of scalefactor window bands for long and short transform windows respectively
105  * @{
106  */
107 extern const uint8_t ff_aac_num_swb_1024[];
108 extern const uint8_t ff_aac_num_swb_960 [];
109 extern const uint8_t ff_aac_num_swb_512 [];
110 extern const uint8_t ff_aac_num_swb_480 [];
111 extern const uint8_t ff_aac_num_swb_128 [];
112 extern const uint8_t ff_aac_num_swb_120 [];
113 // @}
114 
115 extern const uint8_t ff_aac_pred_sfb_max [];
116 
117 extern const uint32_t ff_aac_scalefactor_code[121];
118 extern const uint8_t ff_aac_scalefactor_bits[121];
119 
120 extern const uint16_t * const ff_aac_spectral_codes[11];
121 extern const uint8_t * const ff_aac_spectral_bits [11];
122 extern const uint16_t ff_aac_spectral_sizes[11];
123 
124 extern const float *const ff_aac_codebook_vectors[];
125 extern const float *const ff_aac_codebook_vector_vals[];
126 extern const uint16_t *const ff_aac_codebook_vector_idx[];
127 
128 extern const uint16_t * const ff_swb_offset_1024[13];
129 extern const uint16_t * const ff_swb_offset_960 [13];
130 extern const uint16_t * const ff_swb_offset_512 [13];
131 extern const uint16_t * const ff_swb_offset_480 [13];
132 extern const uint16_t * const ff_swb_offset_128 [13];
133 extern const uint16_t * const ff_swb_offset_120 [13];
134 
135 extern const uint8_t ff_tns_max_bands_1024[13];
136 extern const uint8_t ff_tns_max_bands_512 [13];
137 extern const uint8_t ff_tns_max_bands_480 [13];
138 extern const uint8_t ff_tns_max_bands_128 [13];
139 
140 #endif /* AVCODEC_AACTAB_H */
const uint8_t ff_tns_max_bands_1024[13]
Definition: aactab.c:1413
static const INTFLOAT tns_tmp2_map_1_3[4]
Definition: aactab.h:61
const uint32_t ff_aac_scalefactor_code[121]
Definition: aactab.c:92
const uint8_t ff_aac_num_swb_120[]
Definition: aactab.c:84
const float ff_aac_eld_window_480[1800]
Definition: aactab.c:2397
const int ff_aac_eld_window_480_fixed[1800]
Definition: aactab.c:2850
const uint8_t ff_tns_max_bands_512[13]
Definition: aactab.c:1417
float ff_aac_pow34sf_tab[428]
Definition: aactab.c:40
float INTFLOAT
Definition: aac_defines.h:88
static const INTFLOAT tns_tmp2_map_1_4[8]
Definition: aactab.h:70
uint8_t
#define Q30(x)
Definition: aac_defines.h:97
#define DECLARE_ALIGNED(n, t, v)
Declare a variable that is aligned in memory.
Definition: mem.h:117
const uint8_t ff_aac_pred_sfb_max[]
Definition: aactab.c:88
static const INTFLOAT tns_tmp2_map_0_3[8]
Definition: aactab.h:65
const float *const ff_aac_codebook_vectors[]
Definition: aactab.c:937
const uint8_t ff_aac_scalefactor_bits[121]
Definition: aactab.c:111
void ff_aac_float_common_init(void)
const uint16_t *const ff_swb_offset_512[13]
Definition: aactab.c:1371
const uint8_t ff_aac_num_swb_960[]
Definition: aactab.c:68
const uint8_t ff_aac_num_swb_128[]
Definition: aactab.c:80
const uint16_t *const ff_aac_spectral_codes[11]
Definition: aactab.c:436
float ff_aac_kbd_long_1024[1024]
const uint8_t *const ff_aac_spectral_bits[11]
Definition: aactab.c:441
const uint16_t *const ff_swb_offset_120[13]
Definition: aactab.c:1397
const uint16_t *const ff_swb_offset_480[13]
Definition: aactab.c:1379
#define Q31(x)
Definition: aac_defines.h:98
static const INTFLOAT ltp_coef[8]
Definition: aactab.h:50
const uint8_t ff_aac_num_swb_1024[]
Definition: aactab.c:64
const uint16_t ff_aac_spectral_sizes[11]
Definition: aactab.c:446
AAC definitions and structures.
static const INTFLOAT *const tns_tmp2_map[4]
Definition: aactab.h:82
float ff_aac_pow2sf_tab[428]
Definition: aactab.c:39
const uint16_t *const ff_swb_offset_1024[13]
Definition: aactab.c:1355
const uint16_t *const ff_aac_codebook_vector_idx[]
Definition: aactab.c:1102
float ff_aac_kbd_short_128[128]
const uint8_t ff_tns_max_bands_480[13]
Definition: aactab.c:1421
const float *const ff_aac_codebook_vector_vals[]
Definition: aactab.c:1093
static const INTFLOAT tns_tmp2_map_0_4[16]
Definition: aactab.h:75
const uint16_t *const ff_swb_offset_960[13]
Definition: aactab.c:1363
void ff_aac_tableinit(void)
Definition: aactab.c:3347
const int ff_aac_eld_window_512_fixed[1920]
Definition: aactab.c:1914
const float ff_aac_eld_window_512[1920]
Definition: aactab.c:1430
const uint8_t ff_aac_num_swb_480[]
Definition: aactab.c:76
const uint8_t ff_tns_max_bands_128[13]
Definition: aactab.c:1425
const uint16_t *const ff_swb_offset_128[13]
Definition: aactab.c:1387
const uint8_t ff_aac_num_swb_512[]
Definition: aactab.c:72