/* * 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/audioconvert.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][2] = { { { TYPE_SCE, 0 }, }, { { TYPE_CPE, 0 }, }, { { TYPE_CPE, 0 }, { TYPE_SCE, 0 }, }, { { TYPE_CPE, 0 }, { TYPE_SCE, 0 }, { TYPE_SCE, 1 }, }, { { TYPE_CPE, 0 }, { TYPE_SCE, 0 }, { TYPE_CPE, 1 }, }, { { TYPE_CPE, 0 }, { TYPE_SCE, 0 }, { TYPE_LFE, 0 }, { TYPE_CPE, 1 }, }, { { TYPE_CPE, 0 }, { TYPE_SCE, 0 }, { TYPE_LFE, 0 }, { TYPE_CPE, 2 }, { TYPE_CPE, 1 }, }, }; 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, 0, }; #endif /* AVCODEC_AACDECTAB_H */