mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
134 lines
4.6 KiB
C
134 lines
4.6 KiB
C
/*
|
|
* AAC data declarations
|
|
* 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 data declarations
|
|
* @author Oded Shimon ( ods15 ods15 dyndns org )
|
|
* @author Maxim Gavrilov ( maxim.gavrilov gmail com )
|
|
*/
|
|
|
|
#ifndef AVCODEC_AACTAB_H
|
|
#define AVCODEC_AACTAB_H
|
|
|
|
#include "libavutil/mem.h"
|
|
#include "aac.h"
|
|
#include "aac_tablegen_decl.h"
|
|
|
|
#include <stdint.h>
|
|
|
|
/* NOTE:
|
|
* Tables in this file are used by the AAC decoder and will be used by the AAC
|
|
* encoder.
|
|
*/
|
|
|
|
/* @name ltp_coef
|
|
* Table of the LTP coefficients
|
|
*/
|
|
static const INTFLOAT ltp_coef[8] = {
|
|
Q30(0.570829f), Q30(0.696616f), Q30(0.813004f), Q30(0.911304f),
|
|
Q30(0.984900f), Q30(1.067894f), Q30(1.194601f), Q30(1.369533f),
|
|
};
|
|
|
|
/* @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 INTFLOAT tns_tmp2_map_1_3[4] = {
|
|
Q31(0.00000000f), Q31(-0.43388373f), Q31(0.64278758f), Q31(0.34202015f),
|
|
};
|
|
|
|
static const INTFLOAT tns_tmp2_map_0_3[8] = {
|
|
Q31(0.00000000f), Q31(-0.43388373f), Q31(-0.78183150f), Q31(-0.97492790f),
|
|
Q31(0.98480773f), Q31( 0.86602539f), Q31( 0.64278758f), Q31( 0.34202015f),
|
|
};
|
|
|
|
static const INTFLOAT tns_tmp2_map_1_4[8] = {
|
|
Q31(0.00000000f), Q31(-0.20791170f), Q31(-0.40673664f), Q31(-0.58778524f),
|
|
Q31(0.67369562f), Q31( 0.52643216f), Q31( 0.36124167f), Q31( 0.18374951f),
|
|
};
|
|
|
|
static const INTFLOAT tns_tmp2_map_0_4[16] = {
|
|
Q31( 0.00000000f), Q31(-0.20791170f), Q31(-0.40673664f), Q31(-0.58778524f),
|
|
Q31(-0.74314481f), Q31(-0.86602539f), Q31(-0.95105654f), Q31(-0.99452192f),
|
|
Q31( 0.99573416f), Q31( 0.96182561f), Q31( 0.89516330f), Q31( 0.79801720f),
|
|
Q31( 0.67369562f), Q31( 0.52643216f), Q31( 0.36124167f), Q31( 0.18374951f),
|
|
};
|
|
|
|
static const INTFLOAT * 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
|
|
};
|
|
// @}
|
|
|
|
/* @name window coefficients
|
|
* @{
|
|
*/
|
|
DECLARE_ALIGNED(32, extern float, ff_aac_kbd_long_1024)[1024];
|
|
DECLARE_ALIGNED(32, extern float, ff_aac_kbd_short_128)[128];
|
|
DECLARE_ALIGNED(32, extern int, ff_aac_kbd_long_1024_fixed)[1024];
|
|
DECLARE_ALIGNED(32, extern int, ff_aac_kbd_long_512_fixed)[512];
|
|
DECLARE_ALIGNED(32, extern int, ff_aac_kbd_short_128_fixed)[128];
|
|
const DECLARE_ALIGNED(32, extern float, ff_aac_eld_window_512)[1920];
|
|
const DECLARE_ALIGNED(32, extern int, ff_aac_eld_window_512_fixed)[1920];
|
|
const DECLARE_ALIGNED(32, extern float, ff_aac_eld_window_480)[1800];
|
|
const DECLARE_ALIGNED(32, extern int, ff_aac_eld_window_480_fixed)[1800];
|
|
// @}
|
|
|
|
/* @name number of scalefactor window bands for long and short transform windows respectively
|
|
* @{
|
|
*/
|
|
extern const uint8_t ff_aac_num_swb_1024[];
|
|
extern const uint8_t ff_aac_num_swb_512 [];
|
|
extern const uint8_t ff_aac_num_swb_480 [];
|
|
extern const uint8_t ff_aac_num_swb_128 [];
|
|
// @}
|
|
|
|
extern const uint8_t ff_aac_pred_sfb_max [];
|
|
|
|
extern const uint32_t ff_aac_scalefactor_code[121];
|
|
extern const uint8_t ff_aac_scalefactor_bits[121];
|
|
|
|
extern const uint16_t * const ff_aac_spectral_codes[11];
|
|
extern const uint8_t * const ff_aac_spectral_bits [11];
|
|
extern const uint16_t ff_aac_spectral_sizes[11];
|
|
|
|
extern const float *ff_aac_codebook_vectors[];
|
|
extern const float *ff_aac_codebook_vector_vals[];
|
|
extern const uint16_t *ff_aac_codebook_vector_idx[];
|
|
|
|
extern const uint16_t * const ff_swb_offset_1024[13];
|
|
extern const uint16_t * const ff_swb_offset_512 [13];
|
|
extern const uint16_t * const ff_swb_offset_480 [13];
|
|
extern const uint16_t * const ff_swb_offset_128 [13];
|
|
|
|
extern const uint8_t ff_tns_max_bands_1024[13];
|
|
extern const uint8_t ff_tns_max_bands_512 [13];
|
|
extern const uint8_t ff_tns_max_bands_480 [13];
|
|
extern const uint8_t ff_tns_max_bands_128 [13];
|
|
|
|
#endif /* AVCODEC_AACTAB_H */
|