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
26 * @author Oded Shimon ( ods15 ods15 dyndns org )
27 * @author Maxim Gavrilov ( maxim.gavrilov gmail com )
30 #ifndef AVCODEC_AACDECTAB_H
31 #define AVCODEC_AACDECTAB_H
33 #include "libavutil/channel_layout.h"
39 * Table of the LTP coefficients
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,
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
52 static const float tns_tmp2_map_1_3
[4] = {
53 0.00000000, -0.43388373, 0.64278758, 0.34202015,
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,
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,
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,
73 static const float * const tns_tmp2_map
[4] = {
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 };
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
}, },
93 static const uint64_t aac_channel_layout
[8] = {
96 AV_CH_LAYOUT_SURROUND
,
98 AV_CH_LAYOUT_5POINT0_BACK
,
99 AV_CH_LAYOUT_5POINT1_BACK
,
100 AV_CH_LAYOUT_7POINT1_WIDE_BACK
,
104 #endif /* AVCODEC_AACDECTAB_H */