blob: ec6dd2b38af869d9a57753ccc7e0458da5078911
| 1 | /* |
| 2 | ** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding |
| 3 | ** Copyright (C) 2003-2005 M. Bakker, Nero AG, http://www.nero.com |
| 4 | ** |
| 5 | ** This program is free software; you can redistribute it and/or modify |
| 6 | ** it under the terms of the GNU General Public License as published by |
| 7 | ** the Free Software Foundation; either version 2 of the License, or |
| 8 | ** (at your option) any later version. |
| 9 | ** |
| 10 | ** This program is distributed in the hope that it will be useful, |
| 11 | ** but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | ** GNU General Public License for more details. |
| 14 | ** |
| 15 | ** You should have received a copy of the GNU General Public License |
| 16 | ** along with this program; if not, write to the Free Software |
| 17 | ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 18 | ** |
| 19 | ** Any non-GPL usage of this software or parts of this software is strictly |
| 20 | ** forbidden. |
| 21 | ** |
| 22 | ** The "appropriate copyright message" mentioned in section 2c of the GPLv2 |
| 23 | ** must read: "Code from FAAD2 is copyright (c) Nero AG, www.nero.com" |
| 24 | ** |
| 25 | ** Commercial non-GPL licensing of this software is possible. |
| 26 | ** For more info contact Nero AG through Mpeg4AAClicense@nero.com. |
| 27 | ** |
| 28 | ** $Id: sbr_dec.h,v 1.39 2007/11/01 12:33:34 menno Exp $ |
| 29 | **/ |
| 30 | |
| 31 | #ifndef __SBR_DEC_H__ |
| 32 | #define __SBR_DEC_H__ |
| 33 | |
| 34 | #ifdef __cplusplus |
| 35 | extern "C" { |
| 36 | #endif |
| 37 | |
| 38 | #ifdef PS_DEC |
| 39 | #include "ps_dec.h" |
| 40 | #endif |
| 41 | #ifdef DRM_PS |
| 42 | #include "drm_dec.h" |
| 43 | #endif |
| 44 | |
| 45 | /* MAX_NTSRHFG: maximum of number_time_slots * rate + HFGen. 16*2+8 */ |
| 46 | #define MAX_NTSRHFG 40 |
| 47 | #define MAX_NTSR 32 /* max number_time_slots * rate, ok for DRM and not DRM mode */ |
| 48 | |
| 49 | /* MAX_M: maximum value for M */ |
| 50 | #define MAX_M 49 |
| 51 | /* MAX_L_E: maximum value for L_E */ |
| 52 | #define MAX_L_E 5 |
| 53 | |
| 54 | typedef struct { |
| 55 | real_t *x; |
| 56 | int16_t x_index; |
| 57 | uint8_t channels; |
| 58 | } qmfa_info; |
| 59 | |
| 60 | typedef struct { |
| 61 | real_t *v; |
| 62 | int16_t v_index; |
| 63 | uint8_t channels; |
| 64 | } qmfs_info; |
| 65 | |
| 66 | typedef struct { |
| 67 | uint32_t sample_rate; |
| 68 | uint32_t maxAACLine; |
| 69 | |
| 70 | uint8_t rate; |
| 71 | uint8_t just_seeked; |
| 72 | uint8_t ret; |
| 73 | |
| 74 | uint8_t amp_res[2]; |
| 75 | |
| 76 | uint8_t k0; |
| 77 | uint8_t kx; |
| 78 | uint8_t M; |
| 79 | uint8_t N_master; |
| 80 | uint8_t N_high; |
| 81 | uint8_t N_low; |
| 82 | uint8_t N_Q; |
| 83 | uint8_t N_L[4]; |
| 84 | uint8_t n[2]; |
| 85 | |
| 86 | uint8_t f_master[64]; |
| 87 | uint8_t f_table_res[2][64]; |
| 88 | uint8_t f_table_noise[64]; |
| 89 | uint8_t f_table_lim[4][64]; |
| 90 | #ifdef SBR_LOW_POWER |
| 91 | uint8_t f_group[5][64]; |
| 92 | uint8_t N_G[5]; |
| 93 | #endif |
| 94 | |
| 95 | uint8_t table_map_k_to_g[64]; |
| 96 | |
| 97 | uint8_t abs_bord_lead[2]; |
| 98 | uint8_t abs_bord_trail[2]; |
| 99 | uint8_t n_rel_lead[2]; |
| 100 | uint8_t n_rel_trail[2]; |
| 101 | |
| 102 | uint8_t L_E[2]; |
| 103 | uint8_t L_E_prev[2]; |
| 104 | uint8_t L_Q[2]; |
| 105 | |
| 106 | uint8_t t_E[2][MAX_L_E + 1]; |
| 107 | uint8_t t_Q[2][3]; |
| 108 | uint8_t f[2][MAX_L_E + 1]; |
| 109 | uint8_t f_prev[2]; |
| 110 | |
| 111 | real_t *G_temp_prev[2][5]; |
| 112 | real_t *Q_temp_prev[2][5]; |
| 113 | int8_t GQ_ringbuf_index[2]; |
| 114 | |
| 115 | int16_t E[2][64][MAX_L_E]; |
| 116 | int16_t E_prev[2][64]; |
| 117 | #ifndef FIXED_POINT |
| 118 | real_t E_orig[2][64][MAX_L_E]; |
| 119 | #endif |
| 120 | real_t E_curr[2][64][MAX_L_E]; |
| 121 | int32_t Q[2][64][2]; |
| 122 | #ifndef FIXED_POINT |
| 123 | real_t Q_div[2][64][2]; |
| 124 | real_t Q_div2[2][64][2]; |
| 125 | #endif |
| 126 | int32_t Q_prev[2][64]; |
| 127 | |
| 128 | int8_t l_A[2]; |
| 129 | int8_t l_A_prev[2]; |
| 130 | |
| 131 | uint8_t bs_invf_mode[2][MAX_L_E]; |
| 132 | uint8_t bs_invf_mode_prev[2][MAX_L_E]; |
| 133 | real_t bwArray[2][64]; |
| 134 | real_t bwArray_prev[2][64]; |
| 135 | |
| 136 | uint8_t noPatches; |
| 137 | uint8_t patchNoSubbands[64]; |
| 138 | uint8_t patchStartSubband[64]; |
| 139 | |
| 140 | uint8_t bs_add_harmonic[2][64]; |
| 141 | uint8_t bs_add_harmonic_prev[2][64]; |
| 142 | |
| 143 | uint16_t index_noise_prev[2]; |
| 144 | uint8_t psi_is_prev[2]; |
| 145 | |
| 146 | uint8_t bs_start_freq_prev; |
| 147 | uint8_t bs_stop_freq_prev; |
| 148 | uint8_t bs_xover_band_prev; |
| 149 | uint8_t bs_freq_scale_prev; |
| 150 | uint8_t bs_alter_scale_prev; |
| 151 | uint8_t bs_noise_bands_prev; |
| 152 | |
| 153 | int8_t prevEnvIsShort[2]; |
| 154 | |
| 155 | int8_t kx_prev; |
| 156 | uint8_t bsco; |
| 157 | uint8_t bsco_prev; |
| 158 | uint8_t M_prev; |
| 159 | uint16_t frame_len; |
| 160 | |
| 161 | uint8_t Reset; |
| 162 | uint32_t frame; |
| 163 | uint32_t header_count; |
| 164 | |
| 165 | uint8_t id_aac; |
| 166 | qmfa_info *qmfa[2]; |
| 167 | qmfs_info *qmfs[2]; |
| 168 | |
| 169 | qmf_t Xsbr[2][MAX_NTSRHFG][64]; |
| 170 | |
| 171 | #ifdef DRM |
| 172 | uint8_t Is_DRM_SBR; |
| 173 | #ifdef DRM_PS |
| 174 | drm_ps_info *drm_ps; |
| 175 | #endif |
| 176 | #endif |
| 177 | |
| 178 | uint8_t numTimeSlotsRate; |
| 179 | uint8_t numTimeSlots; |
| 180 | uint8_t tHFGen; |
| 181 | uint8_t tHFAdj; |
| 182 | |
| 183 | #ifdef PS_DEC |
| 184 | ps_info *ps; |
| 185 | #endif |
| 186 | #if (defined(PS_DEC) || defined(DRM_PS)) |
| 187 | uint8_t ps_used; |
| 188 | uint8_t psResetFlag; |
| 189 | #endif |
| 190 | |
| 191 | /* to get it compiling */ |
| 192 | /* we'll see during the coding of all the tools, whether |
| 193 | these are all used or not. |
| 194 | */ |
| 195 | uint8_t bs_header_flag; |
| 196 | uint8_t bs_crc_flag; |
| 197 | uint16_t bs_sbr_crc_bits; |
| 198 | uint8_t bs_protocol_version; |
| 199 | uint8_t bs_amp_res; |
| 200 | uint8_t bs_start_freq; |
| 201 | uint8_t bs_stop_freq; |
| 202 | uint8_t bs_xover_band; |
| 203 | uint8_t bs_freq_scale; |
| 204 | uint8_t bs_alter_scale; |
| 205 | uint8_t bs_noise_bands; |
| 206 | uint8_t bs_limiter_bands; |
| 207 | uint8_t bs_limiter_gains; |
| 208 | uint8_t bs_interpol_freq; |
| 209 | uint8_t bs_smoothing_mode; |
| 210 | uint8_t bs_samplerate_mode; |
| 211 | uint8_t bs_add_harmonic_flag[2]; |
| 212 | uint8_t bs_add_harmonic_flag_prev[2]; |
| 213 | uint8_t bs_extended_data; |
| 214 | uint8_t bs_extension_id; |
| 215 | uint8_t bs_extension_data; |
| 216 | uint8_t bs_coupling; |
| 217 | uint8_t bs_frame_class[2]; |
| 218 | uint8_t bs_rel_bord[2][9]; |
| 219 | uint8_t bs_rel_bord_0[2][9]; |
| 220 | uint8_t bs_rel_bord_1[2][9]; |
| 221 | uint8_t bs_pointer[2]; |
| 222 | uint8_t bs_abs_bord_0[2]; |
| 223 | uint8_t bs_abs_bord_1[2]; |
| 224 | uint8_t bs_num_rel_0[2]; |
| 225 | uint8_t bs_num_rel_1[2]; |
| 226 | uint8_t bs_df_env[2][9]; |
| 227 | uint8_t bs_df_noise[2][3]; |
| 228 | } sbr_info; |
| 229 | |
| 230 | sbr_info *sbrDecodeInit(uint16_t framelength, uint8_t id_aac, |
| 231 | uint32_t sample_rate, uint8_t downSampledSBR |
| 232 | #ifdef DRM |
| 233 | , uint8_t IsDRM |
| 234 | #endif |
| 235 | ); |
| 236 | void sbrDecodeEnd(sbr_info *sbr); |
| 237 | void sbrReset(sbr_info *sbr); |
| 238 | |
| 239 | uint8_t sbrDecodeCoupleFrame(sbr_info *sbr, real_t *left_chan, real_t *right_chan, |
| 240 | const uint8_t just_seeked, const uint8_t downSampledSBR); |
| 241 | uint8_t sbrDecodeSingleFrame(sbr_info *sbr, real_t *channel, |
| 242 | const uint8_t just_seeked, const uint8_t downSampledSBR); |
| 243 | #if (defined(PS_DEC) || defined(DRM_PS)) |
| 244 | uint8_t sbrDecodeSingleFramePS(sbr_info *sbr, real_t *left_channel, real_t *right_channel, |
| 245 | const uint8_t just_seeked, const uint8_t downSampledSBR); |
| 246 | #endif |
| 247 | |
| 248 | |
| 249 | #ifdef __cplusplus |
| 250 | } |
| 251 | #endif |
| 252 | #endif |
| 253 | |
| 254 |