1 /****************************************************************************** 2 * * 3 * Copyright (C) 2018 The Android Open Source Project 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ***************************************************************************** 18 * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore 19 */ 20 #include <string.h> 21 #include <ixheaacd_type_def.h> 22 23 #include "ixheaacd_sbr_common.h" 24 25 #include "ixheaacd_constants.h" 26 #include <ixheaacd_basic_ops32.h> 27 #include <ixheaacd_basic_ops16.h> 28 #include <ixheaacd_basic_ops40.h> 29 #include "ixheaacd_basic_ops.h" 30 #include "ixheaacd_bitbuffer.h" 31 32 #include <ixheaacd_basic_op.h> 33 #include "ixheaacd_intrinsics.h" 34 35 #include "ixheaacd_defines.h" 36 37 #include <ixheaacd_aac_rom.h> 38 39 #include "ixheaacd_definitions.h" 40 41 #include "ixheaacd_error_codes.h" 42 43 #include "ixheaacd_pulsedata.h" 44 45 #include "ixheaacd_pns.h" 46 #include "ixheaacd_drc_data_struct.h" 47 48 #include "ixheaacd_lt_predict.h" 49 50 #include "ixheaacd_channelinfo.h" 51 #include "ixheaacd_drc_dec.h" 52 53 #include "ixheaacd_sbrdecoder.h" 54 #include "ixheaacd_block.h" 55 #include "ixheaacd_channel.h" 56 57 #include "ixheaacd_sbr_payload.h" 58 #include "ixheaacd_common_rom.h" 59 60 #include <ixheaacd_type_def.h> 61 62 #include "ixheaacd_sbrdecsettings.h" 63 #include "ixheaacd_sbr_scale.h" 64 #include "ixheaacd_env_extr_part.h" 65 #include <ixheaacd_sbr_rom.h> 66 67 #include "ixheaacd_lpp_tran.h" 68 #include "ixheaacd_hybrid.h" 69 #include "ixheaacd_ps_dec.h" 70 71 #include "ixheaacd_env_extr.h" 72 #include "ixheaacd_adts.h" 73 #include "ixheaacd_audioobjtypes.h" 74 #include "ixheaacd_memory_standards.h" 75 76 #include "ixheaacd_latmdemux.h" 77 78 #include "ixheaacd_aacdec.h" 79 #include "ixheaacd_mps_polyphase.h" 80 #include "ixheaacd_config.h" 81 #include "ixheaacd_mps_dec.h" 82 83 #include "ixheaacd_struct_def.h" 84 85 #include "ixheaacd_multichannel.h" 86 87 #define ALIGN_SIZE64(x) ((((x) + 7) >> 3) << 3) 88 89 WORD32 ixheaacd_set_aac_persistent_buffers(VOID *aac_persistent_mem_v, 90 WORD32 num_channel) { 91 WORD32 persistent_used; 92 93 struct ia_aac_persistent_struct *aac_persistent_mem = 94 (struct ia_aac_persistent_struct *)aac_persistent_mem_v; 95 96 persistent_used = sizeof(struct ia_aac_persistent_struct); 97 98 memset(aac_persistent_mem, 0, sizeof(struct ia_aac_persistent_struct)); 99 aac_persistent_mem->overlap_buffer = 100 (WORD32 *)((WORD8 *)aac_persistent_mem_v + persistent_used); 101 102 memset((WORD32 *)((WORD8 *)aac_persistent_mem_v + persistent_used), 0, 103 4 * 512 * num_channel * sizeof(WORD32)); 104 105 persistent_used += 4 * 512 * num_channel * sizeof(WORD32); 106 107 aac_persistent_mem->sbr_payload_buffer = 108 (WORD8 *)((WORD8 *)aac_persistent_mem_v + persistent_used); 109 110 memset((WORD16 *)((WORD8 *)aac_persistent_mem_v + persistent_used), 0, 111 ALIGN_SIZE64(MAXSBRBYTES) * num_channel * sizeof(WORD8)); 112 113 persistent_used += ALIGN_SIZE64(MAXSBRBYTES) * num_channel * sizeof(WORD8); 114 115 { 116 WORD32 i; 117 118 for (i = 0; i < num_channel; i++) { 119 aac_persistent_mem->ltp_buf[i] = 120 (WORD16 *)((WORD8 *)aac_persistent_mem_v + persistent_used); 121 122 memset((WORD16 *)((WORD8 *)aac_persistent_mem_v + persistent_used), 0, 123 ltp_buffer_size * sizeof(WORD16)); 124 125 persistent_used += (ltp_buffer_size * sizeof(WORD16)); 126 127 aac_persistent_mem->ptr_aac_dec_static_channel_info[i] = 128 (ia_aac_dec_channel_info *)((WORD8 *)aac_persistent_mem_v + 129 persistent_used); 130 persistent_used += sizeof(ia_aac_dec_channel_info); 131 132 aac_persistent_mem->ptr_aac_dec_static_channel_info[i] 133 ->overlap_add_data.win_shape = 0; 134 aac_persistent_mem->ptr_aac_dec_static_channel_info[i] 135 ->overlap_add_data.win_seq = 0; 136 137 aac_persistent_mem->ptr_aac_dec_static_channel_info[i] 138 ->overlap_add_data.ptr_overlap_buf = 139 &aac_persistent_mem->overlap_buffer[i * OVERLAP_BUFFER_SIZE]; 140 } 141 } 142 143 return persistent_used; 144 } 145 146 VOID ixheaacd_huff_tables_create(ia_aac_dec_tables_struct *ptr_aac_tables) { 147 ptr_aac_tables->code_book[0] = 0; 148 ptr_aac_tables->code_book[1] = 149 (UWORD16 *)ptr_aac_tables->pstr_huffmann_tables->input_table_cb1; 150 ptr_aac_tables->code_book[2] = 151 (UWORD16 *)ptr_aac_tables->pstr_huffmann_tables->input_table_cb2; 152 ptr_aac_tables->code_book[3] = 153 (UWORD16 *)ptr_aac_tables->pstr_huffmann_tables->input_table_cb3; 154 ptr_aac_tables->code_book[4] = 155 (UWORD16 *)ptr_aac_tables->pstr_huffmann_tables->input_table_cb4; 156 ptr_aac_tables->code_book[5] = 157 (UWORD16 *)ptr_aac_tables->pstr_huffmann_tables->input_table_cb5; 158 ptr_aac_tables->code_book[6] = 159 (UWORD16 *)ptr_aac_tables->pstr_huffmann_tables->input_table_cb6; 160 ptr_aac_tables->code_book[7] = 161 (UWORD16 *)ptr_aac_tables->pstr_huffmann_tables->input_table_cb7; 162 ptr_aac_tables->code_book[8] = 163 (UWORD16 *)ptr_aac_tables->pstr_huffmann_tables->input_table_cb8; 164 ptr_aac_tables->code_book[9] = 165 (UWORD16 *)ptr_aac_tables->pstr_huffmann_tables->input_table_cb9; 166 ptr_aac_tables->code_book[10] = 167 (UWORD16 *)ptr_aac_tables->pstr_huffmann_tables->input_table_cb10; 168 ptr_aac_tables->code_book[11] = 169 (UWORD16 *)ptr_aac_tables->pstr_huffmann_tables->input_table_cb10; 170 ptr_aac_tables->code_book[12] = 171 (UWORD16 *)ptr_aac_tables->pstr_huffmann_tables->input_table_cb10; 172 173 ptr_aac_tables->index_table[1] = 174 (UWORD32 *)ptr_aac_tables->pstr_huffmann_tables->idx_table_hf1; 175 ptr_aac_tables->index_table[2] = 176 (UWORD32 *)ptr_aac_tables->pstr_huffmann_tables->idx_table_hf2; 177 ptr_aac_tables->index_table[3] = 178 (UWORD32 *)ptr_aac_tables->pstr_huffmann_tables->idx_table_hf3; 179 ptr_aac_tables->index_table[4] = 180 (UWORD32 *)ptr_aac_tables->pstr_huffmann_tables->idx_table_hf4; 181 ptr_aac_tables->index_table[5] = 182 (UWORD32 *)ptr_aac_tables->pstr_huffmann_tables->idx_table_hf5; 183 ptr_aac_tables->index_table[6] = 184 (UWORD32 *)ptr_aac_tables->pstr_huffmann_tables->idx_table_hf6; 185 ptr_aac_tables->index_table[7] = 186 (UWORD32 *)ptr_aac_tables->pstr_huffmann_tables->idx_table_hf7; 187 ptr_aac_tables->index_table[8] = 188 (UWORD32 *)ptr_aac_tables->pstr_huffmann_tables->idx_table_hf8; 189 ptr_aac_tables->index_table[9] = 190 (UWORD32 *)ptr_aac_tables->pstr_huffmann_tables->idx_table_hf9; 191 ptr_aac_tables->index_table[10] = 192 (UWORD32 *)ptr_aac_tables->pstr_huffmann_tables->idx_table_hf10; 193 ptr_aac_tables->index_table[11] = 194 (UWORD32 *)ptr_aac_tables->pstr_huffmann_tables->idx_table_hf10; 195 ptr_aac_tables->index_table[12] = 196 (UWORD32 *)ptr_aac_tables->pstr_huffmann_tables->idx_table_hf10; 197 198 ptr_aac_tables->scale_factor_bands_short[0] = 199 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_96_128; 200 ptr_aac_tables->scale_factor_bands_short[1] = 201 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_96_128; 202 ptr_aac_tables->scale_factor_bands_short[2] = 203 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_96_128; 204 ptr_aac_tables->scale_factor_bands_short[3] = 205 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_48_128; 206 ptr_aac_tables->scale_factor_bands_short[4] = 207 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_48_128; 208 ptr_aac_tables->scale_factor_bands_short[5] = 209 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_48_128; 210 ptr_aac_tables->scale_factor_bands_short[6] = 211 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_24_128; 212 ptr_aac_tables->scale_factor_bands_short[7] = 213 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_24_128; 214 ptr_aac_tables->scale_factor_bands_short[8] = 215 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_16_128; 216 ptr_aac_tables->scale_factor_bands_short[9] = 217 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_16_128; 218 ptr_aac_tables->scale_factor_bands_short[10] = 219 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_16_128; 220 ptr_aac_tables->scale_factor_bands_short[11] = 221 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_8_128; 222 223 ptr_aac_tables->scale_factor_bands_long[0] = 224 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_96_1024; 225 ptr_aac_tables->scale_factor_bands_long[1] = 226 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_96_1024; 227 ptr_aac_tables->scale_factor_bands_long[2] = 228 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_64_1024; 229 ptr_aac_tables->scale_factor_bands_long[3] = 230 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_48_1024; 231 ptr_aac_tables->scale_factor_bands_long[4] = 232 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_48_1024; 233 ptr_aac_tables->scale_factor_bands_long[5] = 234 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_32_1024; 235 ptr_aac_tables->scale_factor_bands_long[6] = 236 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_24_1024; 237 ptr_aac_tables->scale_factor_bands_long[7] = 238 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_24_1024; 239 ptr_aac_tables->scale_factor_bands_long[8] = 240 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_16_1024; 241 ptr_aac_tables->scale_factor_bands_long[9] = 242 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_16_1024; 243 ptr_aac_tables->scale_factor_bands_long[10] = 244 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_16_1024; 245 ptr_aac_tables->scale_factor_bands_long[11] = 246 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_8_1024; 247 248 ptr_aac_tables->scale_fac_bands_512[0] = 249 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_48_512; 250 ptr_aac_tables->scale_fac_bands_512[1] = 251 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_48_512; 252 ptr_aac_tables->scale_fac_bands_512[2] = 253 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_48_512; 254 ptr_aac_tables->scale_fac_bands_512[3] = 255 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_48_512; 256 ptr_aac_tables->scale_fac_bands_512[4] = 257 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_48_512; 258 ptr_aac_tables->scale_fac_bands_512[5] = 259 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_32_512; 260 ptr_aac_tables->scale_fac_bands_512[6] = 261 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_24_512; 262 ptr_aac_tables->scale_fac_bands_512[7] = 263 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_24_512; 264 ptr_aac_tables->scale_fac_bands_512[8] = 265 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_24_512; 266 ptr_aac_tables->scale_fac_bands_512[9] = 267 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_24_512; 268 ptr_aac_tables->scale_fac_bands_512[10] = 269 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_24_512; 270 ptr_aac_tables->scale_fac_bands_512[11] = 271 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_24_512; 272 ptr_aac_tables->scale_fac_bands_512[12] = 273 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_24_512; 274 ptr_aac_tables->scale_fac_bands_512[13] = 275 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_24_512; 276 ptr_aac_tables->scale_fac_bands_512[14] = 277 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_24_512; 278 ptr_aac_tables->scale_fac_bands_512[15] = 279 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_24_512; 280 281 ptr_aac_tables->scale_fac_bands_480[0] = 282 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_48_480; 283 ptr_aac_tables->scale_fac_bands_480[1] = 284 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_48_480; 285 ptr_aac_tables->scale_fac_bands_480[2] = 286 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_48_480; 287 ptr_aac_tables->scale_fac_bands_480[3] = 288 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_48_480; 289 ptr_aac_tables->scale_fac_bands_480[4] = 290 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_48_480; 291 ptr_aac_tables->scale_fac_bands_480[5] = 292 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_32_480; 293 ptr_aac_tables->scale_fac_bands_480[6] = 294 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_24_480; 295 ptr_aac_tables->scale_fac_bands_480[7] = 296 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_24_480; 297 ptr_aac_tables->scale_fac_bands_480[8] = 298 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_24_480; 299 ptr_aac_tables->scale_fac_bands_480[9] = 300 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_24_480; 301 ptr_aac_tables->scale_fac_bands_480[10] = 302 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_24_480; 303 ptr_aac_tables->scale_fac_bands_480[11] = 304 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_24_480; 305 ptr_aac_tables->scale_fac_bands_480[12] = 306 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_24_480; 307 ptr_aac_tables->scale_fac_bands_480[13] = 308 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_24_480; 309 ptr_aac_tables->scale_fac_bands_480[14] = 310 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_24_480; 311 ptr_aac_tables->scale_fac_bands_480[15] = 312 ptr_aac_tables->pstr_huffmann_tables->ixheaacd_sfb_24_480; 313 } 314 315 ia_aac_decoder_struct *ixheaacd_aac_decoder_init( 316 ia_aac_dec_state_struct *p_state_enhaacplus_dec, 317 ia_aac_dec_sbr_bitstream_struct *ptr_sbr_bitstream, WORD channels, 318 VOID *aac_persistent_mem_v, WORD32 frame_length) { 319 WORD i, ch; 320 struct ia_aac_persistent_struct *aac_persistent_mem; 321 aac_persistent_mem = (struct ia_aac_persistent_struct *)aac_persistent_mem_v; 322 323 aac_persistent_mem->str_aac_decoder.pstr_sbr_bitstream = ptr_sbr_bitstream; 324 325 for (ch = 0; ch < channels; ch++) { 326 ia_aac_decoder_struct *aac_dec_handle = 327 &aac_persistent_mem->str_aac_decoder; 328 aac_dec_handle->pstr_aac_dec_overlap_info[ch] = 329 &aac_persistent_mem->str_aac_dec_overlap_info[ch]; 330 aac_dec_handle->pstr_pns_rand_vec_data = 331 &aac_persistent_mem->str_pns_rand_vec_data; 332 333 aac_dec_handle->pstr_aac_dec_overlap_info[ch]->window_shape = 0; 334 aac_dec_handle->pstr_aac_dec_overlap_info[ch]->window_sequence = 0; 335 if (p_state_enhaacplus_dec->audio_object_type == AOT_ER_AAC_ELD) 336 aac_dec_handle->pstr_aac_dec_overlap_info[ch]->ptr_overlap_buf = 337 &aac_persistent_mem->overlap_buffer[ch * 4 * OVERLAP_BUFFER_SIZE]; 338 else 339 aac_dec_handle->pstr_aac_dec_overlap_info[ch]->ptr_overlap_buf = 340 &aac_persistent_mem->overlap_buffer[ch * OVERLAP_BUFFER_SIZE]; 341 342 { 343 WORD32 *ptr_overlap_buf = 344 aac_dec_handle->pstr_aac_dec_overlap_info[ch]->ptr_overlap_buf; 345 memset(ptr_overlap_buf, 0, sizeof(WORD32) * 4 * 512); 346 } 347 aac_persistent_mem->str_aac_decoder.ptr_aac_dec_static_channel_info[ch] = 348 aac_persistent_mem->ptr_aac_dec_static_channel_info[ch]; 349 aac_persistent_mem->str_aac_decoder.ptr_aac_dec_static_channel_info[ch] 350 ->ltp_buf = aac_persistent_mem->ltp_buf[ch]; 351 } 352 353 for (i = 0; i < 1; i++) { 354 ia_aac_dec_sbr_bitstream_struct *ptr_sbr_bitstream = 355 &aac_persistent_mem->str_aac_decoder.pstr_sbr_bitstream[i]; 356 357 ptr_sbr_bitstream->no_elements = 0; 358 ptr_sbr_bitstream->str_sbr_ele[0].ptr_sbr_data = 359 &aac_persistent_mem->sbr_payload_buffer[ALIGN_SIZE64(MAXSBRBYTES) * i]; 360 ptr_sbr_bitstream->str_sbr_ele[0].sbr_ele_id = ID_SCE; 361 ptr_sbr_bitstream->str_sbr_ele[0].size_payload = 0; 362 } 363 364 { 365 ia_aac_dec_tables_struct *ptr_aac_tables = 366 aac_persistent_mem->str_aac_decoder.pstr_aac_tables; 367 ia_aac_dec_huffman_tables_struct *pstr_huffmann_tables = 368 ptr_aac_tables->pstr_huffmann_tables; 369 370 WORD num_entries = sizeof(pstr_huffmann_tables->str_sample_rate_info) / 371 sizeof(ia_sampling_rate_info_struct); 372 373 WORD32 sampling_rate = p_state_enhaacplus_dec->sampling_rate; 374 375 i = 0; 376 while (sampling_rate != ((pstr_huffmann_tables->str_sample_rate_info[i] 377 .sampling_frequency)) && 378 (i < num_entries)) { 379 i++; 380 } 381 if (i == 12) { 382 i = i - 1; 383 } 384 385 if (i == num_entries) { 386 return NULL; 387 } 388 389 if (frame_length == 1024) { 390 WORD16 *psfb_table_idx[2]; 391 const WORD8 *psfb_width[2]; 392 WORD width_idx; 393 WORD32 j; 394 395 psfb_table_idx[0] = ptr_aac_tables->sfb_long_table; 396 psfb_table_idx[1] = ptr_aac_tables->sfb_short_table; 397 398 psfb_width[0] = ptr_aac_tables->scale_factor_bands_long[i]; 399 psfb_width[1] = ptr_aac_tables->scale_factor_bands_short[i]; 400 401 for (j = 1; j >= 0; j--) { 402 const WORD8 *ptr_width = psfb_width[j]; 403 WORD16 *ptable_idx = psfb_table_idx[j]; 404 width_idx = 0; 405 *ptable_idx++ = width_idx; 406 do { 407 width_idx += (*ptr_width++); 408 *ptable_idx++ = width_idx; 409 } while (*ptr_width != -1); 410 411 aac_persistent_mem->str_aac_decoder.num_swb_window[j] = 412 (WORD8)(ptr_width - psfb_width[j]); 413 } 414 415 { 416 ptr_aac_tables->str_aac_sfb_info[0].sfb_index = 417 ptr_aac_tables->sfb_long_table; 418 ptr_aac_tables->str_aac_sfb_info[1].sfb_index = 419 ptr_aac_tables->sfb_long_table; 420 ptr_aac_tables->str_aac_sfb_info[3].sfb_index = 421 ptr_aac_tables->sfb_long_table; 422 423 ptr_aac_tables->str_aac_sfb_info[2].sfb_index = 424 ptr_aac_tables->sfb_short_table; 425 426 ptr_aac_tables->str_aac_sfb_info[0].sfb_width = (WORD8 *)psfb_width[0]; 427 ptr_aac_tables->str_aac_sfb_info[1].sfb_width = (WORD8 *)psfb_width[0]; 428 ptr_aac_tables->str_aac_sfb_info[3].sfb_width = (WORD8 *)psfb_width[0]; 429 430 ptr_aac_tables->str_aac_sfb_info[2].sfb_width = (WORD8 *)psfb_width[1]; 431 } 432 } else { 433 WORD16 *ptr_sfb_idx[2]; 434 const WORD8 *ptr_sfb_width[2]; 435 WORD width_idx; 436 WORD32 j; 437 438 ptr_sfb_idx[0] = ptr_aac_tables->sfb_long_table; 439 ptr_sfb_idx[1] = ptr_aac_tables->sfb_short_table; 440 441 if (frame_length == 512) 442 ptr_sfb_width[0] = ptr_aac_tables->scale_fac_bands_512[i]; 443 else 444 ptr_sfb_width[0] = ptr_aac_tables->scale_fac_bands_480[i]; 445 446 for (j = 0; j >= 0; j--) { 447 const WORD8 *ptr_width = ptr_sfb_width[j]; 448 WORD16 *ptr_idx = ptr_sfb_idx[j]; 449 width_idx = 0; 450 *ptr_idx++ = width_idx; 451 do { 452 width_idx += (*ptr_width++); 453 *ptr_idx++ = width_idx; 454 } while (*ptr_width != -1); 455 456 aac_persistent_mem->str_aac_decoder.num_swb_window[j] = 457 (WORD8)(ptr_width - ptr_sfb_width[j]); 458 } 459 460 { 461 ptr_aac_tables->str_aac_sfb_info[0].sfb_index = 462 ptr_aac_tables->sfb_long_table; 463 ptr_aac_tables->str_aac_sfb_info[1].sfb_index = 464 ptr_aac_tables->sfb_long_table; 465 ptr_aac_tables->str_aac_sfb_info[3].sfb_index = 466 ptr_aac_tables->sfb_long_table; 467 ptr_aac_tables->str_aac_sfb_info[2].sfb_index = 468 ptr_aac_tables->sfb_short_table; 469 470 ptr_aac_tables->str_aac_sfb_info[0].sfb_width = 471 (WORD8 *)ptr_sfb_width[0]; 472 ptr_aac_tables->str_aac_sfb_info[1].sfb_width = 473 (WORD8 *)ptr_sfb_width[0]; 474 ptr_aac_tables->str_aac_sfb_info[3].sfb_width = 475 (WORD8 *)ptr_sfb_width[0]; 476 ptr_aac_tables->str_aac_sfb_info[2].sfb_width = 477 (WORD8 *)ptr_sfb_width[1]; 478 } 479 } 480 { 481 ia_aac_decoder_struct *aac_dec_handle = 482 &aac_persistent_mem->str_aac_decoder; 483 aac_dec_handle->sampling_rate_index = (WORD16)i; 484 aac_dec_handle->sampling_rate = sampling_rate; 485 aac_dec_handle->channels = 1; 486 aac_dec_handle->block_number = 0; 487 aac_dec_handle->samples_per_frame = frame_length; 488 } 489 } 490 491 return &(aac_persistent_mem->str_aac_decoder); 492 } 493
