mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-09-04 07:21:31 +02:00
![Andreas Rheinhardt](/assets/img/avatar_default.png)
Also include channel_layout.h directly wherever used. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
141 lines
4.9 KiB
C
141 lines
4.9 KiB
C
/*
|
|
* AAC encoder data
|
|
* Copyright (c) 2015 Rostislav Pehlivanov ( atomnuker 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 encoder data
|
|
* @author Rostislav Pehlivanov ( atomnuker gmail com )
|
|
*/
|
|
|
|
#ifndef AVCODEC_AACENCTAB_H
|
|
#define AVCODEC_AACENCTAB_H
|
|
|
|
#include "libavutil/channel_layout.h"
|
|
#include "aac.h"
|
|
|
|
/** Total number of usable codebooks **/
|
|
#define CB_TOT 12
|
|
|
|
/** Total number of codebooks, including special ones **/
|
|
#define CB_TOT_ALL 15
|
|
|
|
#define AAC_MAX_CHANNELS 16
|
|
|
|
extern const uint8_t *const ff_aac_swb_size_1024[];
|
|
extern const int ff_aac_swb_size_1024_len;
|
|
extern const uint8_t *const ff_aac_swb_size_128[];
|
|
extern const int ff_aac_swb_size_128_len;
|
|
|
|
/* Supported layouts without using a PCE */
|
|
static const int64_t aac_normal_chan_layouts[7] = {
|
|
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,
|
|
};
|
|
|
|
/** default channel configurations */
|
|
static const uint8_t aac_chan_configs[AAC_MAX_CHANNELS][6] = {
|
|
{1, TYPE_SCE}, // 1 channel - single channel element
|
|
{1, TYPE_CPE}, // 2 channels - channel pair
|
|
{2, TYPE_SCE, TYPE_CPE}, // 3 channels - center + stereo
|
|
{3, TYPE_SCE, TYPE_CPE, TYPE_SCE}, // 4 channels - front center + stereo + back center
|
|
{3, TYPE_SCE, TYPE_CPE, TYPE_CPE}, // 5 channels - front center + stereo + back stereo
|
|
{4, TYPE_SCE, TYPE_CPE, TYPE_CPE, TYPE_LFE}, // 6 channels - front center + stereo + back stereo + LFE
|
|
{0}, // 7 channels - invalid without PCE
|
|
{5, TYPE_SCE, TYPE_CPE, TYPE_CPE, TYPE_CPE, TYPE_LFE}, // 8 channels - front center + front stereo + side stereo + back stereo + LFE
|
|
};
|
|
|
|
/**
|
|
* Table to remap channels from libavcodec's default order to AAC order.
|
|
*/
|
|
static const uint8_t aac_chan_maps[AAC_MAX_CHANNELS][AAC_MAX_CHANNELS] = {
|
|
{ 0 },
|
|
{ 0, 1 },
|
|
{ 2, 0, 1 },
|
|
{ 2, 0, 1, 3 },
|
|
{ 2, 0, 1, 3, 4 },
|
|
{ 2, 0, 1, 4, 5, 3 },
|
|
{ 0 },
|
|
{ 2, 0, 1, 6, 7, 4, 5, 3 },
|
|
};
|
|
|
|
/* duplicated from avpriv_mpeg4audio_sample_rates to avoid shared build
|
|
* failures */
|
|
static const int mpeg4audio_sample_rates[16] = {
|
|
96000, 88200, 64000, 48000, 44100, 32000,
|
|
24000, 22050, 16000, 12000, 11025, 8000, 7350
|
|
};
|
|
|
|
/** bits needed to code codebook run value for long windows */
|
|
static const uint8_t run_value_bits_long[64] = {
|
|
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
|
|
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 10,
|
|
10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
|
|
10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 15
|
|
};
|
|
|
|
/** bits needed to code codebook run value for short windows */
|
|
static const uint8_t run_value_bits_short[16] = {
|
|
3, 3, 3, 3, 3, 3, 3, 6, 6, 6, 6, 6, 6, 6, 6, 9
|
|
};
|
|
|
|
/* TNS starting SFBs for long and short windows */
|
|
static const uint8_t tns_min_sfb_short[16] = {
|
|
2, 2, 2, 3, 3, 4, 6, 6, 8, 10, 10, 12, 12, 12, 12, 12
|
|
};
|
|
|
|
static const uint8_t tns_min_sfb_long[16] = {
|
|
12, 13, 15, 16, 17, 20, 25, 26, 24, 28, 30, 31, 31, 31, 31, 31
|
|
};
|
|
|
|
static const uint8_t * const tns_min_sfb[2] = {
|
|
tns_min_sfb_long, tns_min_sfb_short
|
|
};
|
|
|
|
static const uint8_t * const run_value_bits[2] = {
|
|
run_value_bits_long, run_value_bits_short
|
|
};
|
|
|
|
/** Map to convert values from BandCodingPath index to a codebook index **/
|
|
static const uint8_t aac_cb_out_map[CB_TOT_ALL] = {0,1,2,3,4,5,6,7,8,9,10,11,13,14,15};
|
|
/** Inverse map to convert from codebooks to BandCodingPath indices **/
|
|
static const uint8_t aac_cb_in_map[CB_TOT_ALL+1] = {0,1,2,3,4,5,6,7,8,9,10,11,0,12,13,14};
|
|
|
|
static const uint8_t aac_cb_range [12] = {0, 3, 3, 3, 3, 9, 9, 8, 8, 13, 13, 17};
|
|
static const uint8_t aac_cb_maxval[12] = {0, 1, 1, 2, 2, 4, 4, 7, 7, 12, 12, 16};
|
|
|
|
static const unsigned char aac_maxval_cb[] = {
|
|
0, 1, 3, 5, 5, 7, 7, 7, 9, 9, 9, 9, 9, 11
|
|
};
|
|
|
|
static const int aacenc_profiles[] = {
|
|
FF_PROFILE_AAC_MAIN,
|
|
FF_PROFILE_AAC_LOW,
|
|
FF_PROFILE_AAC_LTP,
|
|
FF_PROFILE_MPEG2_AAC_LOW,
|
|
};
|
|
|
|
#endif /* AVCODEC_AACENCTAB_H */
|