| /* |
| * 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 <stdint.h> |
| |
| /* NOTE: |
| * Tables in this file are shared by the AAC decoders and encoder |
| */ |
| |
| extern float ff_aac_pow2sf_tab[428]; |
| extern float ff_aac_pow34sf_tab[428]; |
| |
| void ff_aac_tableinit(void); |
| |
| /* @name ltp_coef |
| * Table of the LTP coefficients |
| */ |
| static const INTFLOAT ltp_coef[8] = { |
| Q30(0.570829), Q30(0.696616), Q30(0.813004), Q30(0.911304), |
| Q30(0.984900), Q30(1.067894), Q30(1.194601), Q30(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 INTFLOAT tns_tmp2_map_1_3[4] = { |
| Q31(0.00000000), Q31(-0.43388373), Q31(0.64278758), Q31(0.34202015), |
| }; |
| |
| static const INTFLOAT tns_tmp2_map_0_3[8] = { |
| Q31(0.00000000), Q31(-0.43388373), Q31(-0.78183150), Q31(-0.97492790), |
| Q31(0.98480773), Q31( 0.86602539), Q31( 0.64278758), Q31( 0.34202015), |
| }; |
| |
| static const INTFLOAT tns_tmp2_map_1_4[8] = { |
| Q31(0.00000000), Q31(-0.20791170), Q31(-0.40673664), Q31(-0.58778524), |
| Q31(0.67369562), Q31( 0.52643216), Q31( 0.36124167), Q31( 0.18374951), |
| }; |
| |
| static const INTFLOAT tns_tmp2_map_0_4[16] = { |
| Q31( 0.00000000), Q31(-0.20791170), Q31(-0.40673664), Q31(-0.58778524), |
| Q31(-0.74314481), Q31(-0.86602539), Q31(-0.95105654), Q31(-0.99452192), |
| Q31( 0.99573416), Q31( 0.96182561), Q31( 0.89516330), Q31( 0.79801720), |
| Q31( 0.67369562), Q31( 0.52643216), Q31( 0.36124167), Q31( 0.18374951), |
| }; |
| |
| 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 const float, ff_aac_eld_window_512)[1920]; |
| DECLARE_ALIGNED(32, extern const int, ff_aac_eld_window_512_fixed)[1920]; |
| DECLARE_ALIGNED(32, extern const float, ff_aac_eld_window_480)[1800]; |
| DECLARE_ALIGNED(32, extern const int, ff_aac_eld_window_480_fixed)[1800]; |
| // @} |
| |
| /* Initializes data shared between float decoder and encoder. */ |
| void ff_aac_float_common_init(void); |
| |
| /* @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_960 []; |
| 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_num_swb_120 []; |
| // @} |
| |
| 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 *const ff_aac_codebook_vectors[]; |
| extern const float *const ff_aac_codebook_vector_vals[]; |
| extern const uint16_t *const ff_aac_codebook_vector_idx[]; |
| |
| extern const uint16_t * const ff_swb_offset_1024[13]; |
| extern const uint16_t * const ff_swb_offset_960 [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 uint16_t * const ff_swb_offset_120 [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 */ |