| /* |
| * AAC decoder data |
| * Copyright (c) 2005-2006 Oded Shimon ( ods15 ods15 dyndns org ) |
| * Copyright (c) 2006-2007 Maxim Gavrilov ( maxim.gavrilov gmail com ) |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /** |
| * @file |
| * AAC decoder data |
| * @author Oded Shimon ( ods15 ods15 dyndns org ) |
| * @author Maxim Gavrilov ( maxim.gavrilov gmail com ) |
| */ |
| |
| #ifndef AVCODEC_AACDECTAB_H |
| #define AVCODEC_AACDECTAB_H |
| |
| #include "libavutil/channel_layout.h" |
| #include "aac.h" |
| |
| #include <stdint.h> |
| |
| /* @name ltp_coef |
| * Table of the LTP coefficients |
| */ |
| static const float ltp_coef[8] = { |
| 0.570829, 0.696616, 0.813004, 0.911304, |
| 0.984900, 1.067894, 1.194601, 1.369533, |
| }; |
| |
| /* @name tns_tmp2_map |
| * Tables of the tmp2[] arrays of LPC coefficients used for TNS. |
| * The suffix _M_N[] indicate the values of coef_compress and coef_res |
| * respectively. |
| * @{ |
| */ |
| static const float tns_tmp2_map_1_3[4] = { |
| 0.00000000, -0.43388373, 0.64278758, 0.34202015, |
| }; |
| |
| static const float tns_tmp2_map_0_3[8] = { |
| 0.00000000, -0.43388373, -0.78183150, -0.97492790, |
| 0.98480773, 0.86602539, 0.64278758, 0.34202015, |
| }; |
| |
| static const float tns_tmp2_map_1_4[8] = { |
| 0.00000000, -0.20791170, -0.40673664, -0.58778524, |
| 0.67369562, 0.52643216, 0.36124167, 0.18374951, |
| }; |
| |
| static const float tns_tmp2_map_0_4[16] = { |
| 0.00000000, -0.20791170, -0.40673664, -0.58778524, |
| -0.74314481, -0.86602539, -0.95105654, -0.99452192, |
| 0.99573416, 0.96182561, 0.89516330, 0.79801720, |
| 0.67369562, 0.52643216, 0.36124167, 0.18374951, |
| }; |
| |
| static const float * const tns_tmp2_map[4] = { |
| tns_tmp2_map_0_3, |
| tns_tmp2_map_0_4, |
| tns_tmp2_map_1_3, |
| tns_tmp2_map_1_4 |
| }; |
| // @} |
| |
| static const int8_t tags_per_config[16] = { 0, 1, 1, 2, 3, 3, 4, 5, 0, 0, 0, 0, 0, 0, 0, 0 }; |
| |
| static const uint8_t aac_channel_layout_map[7][5][3] = { |
| { { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, }, |
| { { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, }, |
| { { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, }, |
| { { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, { TYPE_SCE, 1, AAC_CHANNEL_BACK }, }, |
| { { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 1, AAC_CHANNEL_BACK }, }, |
| { { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 1, AAC_CHANNEL_BACK }, { TYPE_LFE, 0, AAC_CHANNEL_LFE }, }, |
| { { 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 }, }, |
| }; |
| |
| static const uint64_t aac_channel_layout[8] = { |
| AV_CH_LAYOUT_MONO, |
| AV_CH_LAYOUT_STEREO, |
| AV_CH_LAYOUT_SURROUND, |
| AV_CH_LAYOUT_4POINT0, |
| AV_CH_LAYOUT_5POINT0_BACK, |
| AV_CH_LAYOUT_5POINT1_BACK, |
| AV_CH_LAYOUT_7POINT1_WIDE_BACK, |
| 0, |
| }; |
| |
| #endif /* AVCODEC_AACDECTAB_H */ |