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 "libavcore/audioconvert.h"
39 * Tables of the tmp2[] arrays of LPC coefficients used for TNS.
40 * The suffix _M_N[] indicate the values of coef_compress and coef_res
44 static const float tns_tmp2_map_1_3[4] = {
45 0.00000000, -0.43388373, 0.64278758, 0.34202015,
48 static const float tns_tmp2_map_0_3[8] = {
49 0.00000000, -0.43388373, -0.78183150, -0.97492790,
50 0.98480773, 0.86602539, 0.64278758, 0.34202015,
53 static const float tns_tmp2_map_1_4[8] = {
54 0.00000000, -0.20791170, -0.40673664, -0.58778524,
55 0.67369562, 0.52643216, 0.36124167, 0.18374951,
58 static const float tns_tmp2_map_0_4[16] = {
59 0.00000000, -0.20791170, -0.40673664, -0.58778524,
60 -0.74314481, -0.86602539, -0.95105654, -0.99452192,
61 0.99573416, 0.96182561, 0.89516330, 0.79801720,
62 0.67369562, 0.52643216, 0.36124167, 0.18374951,
65 static const float * const tns_tmp2_map[4] = {
73 static const int8_t tags_per_config[16] = { 0, 1, 1, 2, 3, 3, 4, 5, 0, 0, 0, 0, 0, 0, 0, 0 };
75 static const uint8_t aac_channel_layout_map[7][5][2] = {
78 { { TYPE_CPE, 0 }, { TYPE_SCE, 0 }, },
79 { { TYPE_CPE, 0 }, { TYPE_SCE, 0 }, { TYPE_SCE, 1 }, },
80 { { TYPE_CPE, 0 }, { TYPE_SCE, 0 }, { TYPE_CPE, 1 }, },
81 { { TYPE_CPE, 0 }, { TYPE_SCE, 0 }, { TYPE_LFE, 0 }, { TYPE_CPE, 1 }, },
82 { { TYPE_CPE, 0 }, { TYPE_SCE, 0 }, { TYPE_LFE, 0 }, { TYPE_CPE, 2 }, { TYPE_CPE, 1 }, },
85 static const int64_t aac_channel_layout[8] = {
88 AV_CH_LAYOUT_SURROUND,
90 AV_CH_LAYOUT_5POINT0_BACK,
91 AV_CH_LAYOUT_5POINT1_BACK,
92 AV_CH_LAYOUT_7POINT1_WIDE,
96 #endif /* AVCODEC_AACDECTAB_H */