mirror of
https://github.com/xenia-project/FFmpeg.git
synced 2024-11-25 04:30:02 +00:00
03b078721c
* commit '97bf7c03b1338a867da52c159a2afecbdedcfa88': doc: git-howto: Leave reviewers time to react before pushing patches Include libavutil/channel_layout.h instead of libavutil/audioconvert.h lavu: rename audioconvert.* to channel_layout.* and deprecate audioconvert.h Conflicts: doc/APIchanges doc/examples/decoding_encoding.c doc/git-howto.texi ffmpeg_filter.c libavcodec/flacdec.c libavcodec/imc.c libavcodec/mpegaudiodec.c libavcodec/utils.c libavfilter/asrc_anullsrc.c libavfilter/audio.c libavfilter/avfilter.c libavfilter/avfilter.h libavfilter/avfiltergraph.c libavfilter/buffer.c libavutil/Makefile libavutil/audioconvert.h libavutil/channel_layout.c libavutil/version.h Merged-by: Michael Niedermayer <michaelni@gmx.at>
105 lines
3.5 KiB
C
105 lines
3.5 KiB
C
/*
|
|
* 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 */
|