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