1 /*
2 * AAC encoder data
3 * Copyright (c) 2015 Rostislav Pehlivanov ( atomnuker gmail com )
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /**
23 * @file
24 * AAC encoder data
25 * @author Rostislav Pehlivanov ( atomnuker gmail com )
26 */
27
28 #ifndef AVCODEC_AACENCTAB_H
29 #define AVCODEC_AACENCTAB_H
30
32
33 /** Total number of usable codebooks **/
35
36 /** Total number of codebooks, including special ones **/
38
39 #define AAC_MAX_CHANNELS 16
40
45
46 /* Supported layouts without using a PCE */
55 };
56
57 /** default channel configurations */
59 {1,
TYPE_SCE},
// 1 channel - single channel element
60 {1,
TYPE_CPE},
// 2 channels - channel pair
63 {3,
TYPE_SCE,
TYPE_CPE, TYPE_CPE},
// 5 channels - front center + stereo + back stereo
65 {0}, // 7 channels - invalid without PCE
67 };
68
69 /**
70 * Table to remap channels from libavcodec's default order to AAC order.
71 */
73 { 0 },
74 { 0, 1 },
75 { 2, 0, 1 },
76 { 2, 0, 1, 3 },
77 { 2, 0, 1, 3, 4 },
78 { 2, 0, 1, 4, 5, 3 },
79 { 0 },
80 { 2, 0, 1, 6, 7, 4, 5, 3 },
81 };
82
83 /* duplicated from avpriv_mpeg4audio_sample_rates to avoid shared build
84 * failures */
86 96000, 88200, 64000, 48000, 44100, 32000,
87 24000, 22050, 16000, 12000, 11025, 8000, 7350
88 };
89
90 /** bits needed to code codebook run value for long windows */
92 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
93 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 10,
94 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
95 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 15
96 };
97
98 /** bits needed to code codebook run value for short windows */
100 3, 3, 3, 3, 3, 3, 3, 6, 6, 6, 6, 6, 6, 6, 6, 9
101 };
102
103 /* TNS starting SFBs for long and short windows */
105 2, 2, 2, 3, 3, 4, 6, 6, 8, 10, 10, 12, 12, 12, 12, 12
106 };
107
109 12, 13, 15, 16, 17, 20, 25, 26, 24, 28, 30, 31, 31, 31, 31, 31
110 };
111
114 };
115
118 };
119
120 /** Map to convert values from BandCodingPath index to a codebook index **/
121 static const uint8_t aac_cb_out_map[
CB_TOT_ALL] = {0,1,2,3,4,5,6,7,8,9,10,11,13,14,15};
122 /** Inverse map to convert from codebooks to BandCodingPath indices **/
123 static const uint8_t aac_cb_in_map[
CB_TOT_ALL+1] = {0,1,2,3,4,5,6,7,8,9,10,11,0,12,13,14};
124
125 static const uint8_t aac_cb_range [12] = {0, 3, 3, 3, 3, 9, 9, 8, 8, 13, 13, 17};
126 static const uint8_t aac_cb_maxval[12] = {0, 1, 1, 2, 2, 4, 4, 7, 7, 12, 12, 16};
127
129 0, 1, 3, 5, 5, 7, 7, 7, 9, 9, 9, 9, 9, 11
130 };
131
137 };
138
139 #endif /* AVCODEC_AACENCTAB_H */
static const uint8_t *const tns_min_sfb[2]
static const uint8_t *const run_value_bits[2]
#define AV_CH_LAYOUT_7POINT1
static const uint8_t aac_chan_configs[AAC_MAX_CHANNELS][6]
default channel configurations
static const uint8_t aac_cb_out_map[CB_TOT_ALL]
Map to convert values from BandCodingPath index to a codebook index.
#define AV_CH_LAYOUT_SURROUND
const uint8_t * ff_aac_swb_size_1024[]
static const uint8_t tns_min_sfb_short[16]
#define FF_PROFILE_AAC_MAIN
#define AV_CH_LAYOUT_4POINT0
#define AV_CH_LAYOUT_STEREO
static const uint8_t aac_chan_maps[AAC_MAX_CHANNELS][AAC_MAX_CHANNELS]
Table to remap channels from libavcodec's default order to AAC order.
#define FF_PROFILE_AAC_LTP
const uint8_t * ff_aac_swb_size_128[]
static const uint8_t aac_cb_in_map[CB_TOT_ALL+1]
Inverse map to convert from codebooks to BandCodingPath indices.
static const uint8_t run_value_bits_short[16]
bits needed to code codebook run value for short windows
#define FF_PROFILE_MPEG2_AAC_LOW
static const int mpeg4audio_sample_rates[16]
static const uint8_t tns_min_sfb_long[16]
#define FF_PROFILE_AAC_LOW
AAC definitions and structures.
#define AV_CH_LAYOUT_5POINT1_BACK
static const uint8_t aac_cb_range[12]
const int ff_aac_swb_size_128_len
static const unsigned char aac_maxval_cb[]
#define AV_CH_LAYOUT_5POINT0_BACK
#define CB_TOT_ALL
Total number of codebooks, including special ones.
static const uint8_t aac_cb_maxval[12]
static const uint8_t run_value_bits_long[64]
bits needed to code codebook run value for long windows
static const int64_t aac_normal_chan_layouts[7]
static const int aacenc_profiles[]
#define AV_CH_LAYOUT_MONO
const int ff_aac_swb_size_1024_len