aacdectab.h
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1 /*
2  * AAC decoder data
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 decoder data
26  * @author Oded Shimon ( ods15 ods15 dyndns org )
27  * @author Maxim Gavrilov ( maxim.gavrilov gmail com )
28  */
29 
30 #ifndef AVCODEC_AACDECTAB_H
31 #define AVCODEC_AACDECTAB_H
32 
34 #include "aac.h"
35 
36 #include <stdint.h>
37 
38 /* @name ltp_coef
39  * Table of the LTP coefficients
40  */
41 static const float ltp_coef[8] = {
42  0.570829, 0.696616, 0.813004, 0.911304,
43  0.984900, 1.067894, 1.194601, 1.369533,
44 };
45 
46 /* @name tns_tmp2_map
47  * Tables of the tmp2[] arrays of LPC coefficients used for TNS.
48  * The suffix _M_N[] indicate the values of coef_compress and coef_res
49  * respectively.
50  * @{
51  */
52 static const float tns_tmp2_map_1_3[4] = {
53  0.00000000, -0.43388373, 0.64278758, 0.34202015,
54 };
55 
56 static const float tns_tmp2_map_0_3[8] = {
57  0.00000000, -0.43388373, -0.78183150, -0.97492790,
58  0.98480773, 0.86602539, 0.64278758, 0.34202015,
59 };
60 
61 static const float tns_tmp2_map_1_4[8] = {
62  0.00000000, -0.20791170, -0.40673664, -0.58778524,
63  0.67369562, 0.52643216, 0.36124167, 0.18374951,
64 };
65 
66 static const float tns_tmp2_map_0_4[16] = {
67  0.00000000, -0.20791170, -0.40673664, -0.58778524,
68  -0.74314481, -0.86602539, -0.95105654, -0.99452192,
69  0.99573416, 0.96182561, 0.89516330, 0.79801720,
70  0.67369562, 0.52643216, 0.36124167, 0.18374951,
71 };
72 
73 static const float * const tns_tmp2_map[4] = {
78 };
79 // @}
80 
81 static const int8_t tags_per_config[16] = { 0, 1, 1, 2, 3, 3, 4, 5, 0, 0, 0, 0, 0, 0, 0, 0 };
82 
83 static const uint8_t aac_channel_layout_map[7][5][3] = {
84  { { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, },
85  { { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, },
86  { { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, },
87  { { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, { TYPE_SCE, 1, AAC_CHANNEL_BACK }, },
88  { { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 1, AAC_CHANNEL_BACK }, },
89  { { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 1, AAC_CHANNEL_BACK }, { TYPE_LFE, 0, AAC_CHANNEL_LFE }, },
90  { { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 1, AAC_CHANNEL_FRONT }, { TYPE_CPE, 2, AAC_CHANNEL_BACK }, { TYPE_LFE, 0, AAC_CHANNEL_LFE }, },
91 };
92 
93 static const uint64_t aac_channel_layout[8] = {
101  0,
102 };
103 
104 #endif /* AVCODEC_AACDECTAB_H */
static const float tns_tmp2_map_0_4[16]
Definition: aacdectab.h:66
static const int8_t tags_per_config[16]
Definition: aacdectab.h:81
#define AV_CH_LAYOUT_SURROUND
Definition: aac.h:49
Definition: aac.h:50
#define AV_CH_LAYOUT_4POINT0
#define AV_CH_LAYOUT_STEREO
uint8_t
static const uint8_t aac_channel_layout_map[7][5][3]
Definition: aacdectab.h:83
Definition: aac.h:52
static const float tns_tmp2_map_1_3[4]
Definition: aacdectab.h:52
audio channel layout utility functions
AAC definitions and structures.
#define AV_CH_LAYOUT_5POINT1_BACK
#define AV_CH_LAYOUT_7POINT1_WIDE_BACK
#define AV_CH_LAYOUT_5POINT0_BACK
static const float tns_tmp2_map_1_4[8]
Definition: aacdectab.h:61
static const uint64_t aac_channel_layout[8]
Definition: aacdectab.h:93
static const float ltp_coef[8]
Definition: aacdectab.h:41
static const float *const tns_tmp2_map[4]
Definition: aacdectab.h:73
#define AV_CH_LAYOUT_MONO
static const float tns_tmp2_map_0_3[8]
Definition: aacdectab.h:56