mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
117 lines
4.1 KiB
117 lines
4.1 KiB
/* |
|
* 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, 4, 5, 0, 5, 0 }; |
|
|
|
static const uint8_t aac_channel_layout_map[16][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 }, }, |
|
{ { 0, } }, |
|
{ { 0, } }, |
|
{ { 0, } }, |
|
{ { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 1, AAC_CHANNEL_BACK }, { TYPE_SCE, 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_SIDE }, { TYPE_CPE, 2, AAC_CHANNEL_BACK }, { TYPE_LFE, 0, AAC_CHANNEL_LFE }, }, |
|
{ { 0, } }, |
|
/* TODO: Add 7+1 TOP configuration */ |
|
}; |
|
|
|
static const uint64_t aac_channel_layout[16] = { |
|
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, |
|
0, |
|
0, |
|
AV_CH_LAYOUT_6POINT1, |
|
AV_CH_LAYOUT_7POINT1, |
|
0, |
|
/* AV_CH_LAYOUT_7POINT1_TOP, */ |
|
}; |
|
|
|
#endif /* AVCODEC_AACDECTAB_H */
|
|
|