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 <stdio.h> 21 #include <string.h> 22 #include "ixheaacd_sbr_common.h" 23 #include <ixheaacd_type_def.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_cnst.h" 52 #include "ixheaacd_drc_dec.h" 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 #include "ixheaacd_stereo.h" 67 #include "ixheaacd_lpp_tran.h" 68 #include "ixheaacd_hybrid.h" 69 #include "ixheaacd_ps_dec.h" 70 #include "ixheaacd_env_extr.h" 71 #include "ixheaacd_adts.h" 72 #include "ixheaacd_audioobjtypes.h" 73 #include "ixheaacd_memory_standards.h" 74 #include "ixheaacd_latmdemux.h" 75 #include "ixheaacd_aacdec.h" 76 #include "ixheaacd_mps_polyphase.h" 77 #include "ixheaacd_config.h" 78 #include "ixheaacd_mps_dec.h" 79 #include "ixheaacd_struct_def.h" 80 #include "ixheaacd_headerdecode.h" 81 #include "ixheaacd_multichannel.h" 82 #include "ixheaacd_adts_crc_check.h" 83 84 #include "ixheaacd_hcr.h" 85 86 #define SIZEOF_INT(x) ((sizeof(x) + sizeof(WORD32) - 1) / sizeof(WORD32)) 87 88 #define EXT_FILL_DATA 1 89 #define EXT_FIL 0 90 91 WORD32 ixheaacd_aacdec_decodeframe( 92 ia_exhaacplus_dec_api_struct *p_obj_exhaacplus_dec, 93 ia_aac_dec_scratch_struct *aac_scratch_ptrs, WORD16 *time_data, 94 FLAG frame_status, WORD *type, WORD *ch_idx, WORD init_flag, WORD channel, 95 WORD *element_index_order, WORD skip_full_decode, WORD ch_fac, 96 WORD slot_element, WORD max_channels, WORD32 total_channels, 97 WORD32 frame_length, WORD32 frame_size, ia_drc_dec_struct *pstr_drc_dec, 98 WORD32 object_type, WORD32 ch_config, 99 ia_eld_specific_config_struct eld_specific_config, WORD16 adtsheader, 100 ia_drc_dec_struct *drc_dummy) 101 102 { 103 WORD ch, ele_type; 104 ia_aac_dec_state_struct *p_state_enhaacplus_dec; 105 ia_aac_decoder_struct *aac_dec_handle; 106 ia_bit_buf_struct *it_bit_buff; 107 ixheaacd_latm_struct *latm_element; 108 109 WORD error_code = (WORD)frame_status; 110 WORD previous_element; 111 WORD prev_data_ele_present = 0; 112 WORD new_element; 113 WORD32 num_ch = 0; 114 115 WORD32 crc_reg = 0; 116 ia_adts_crc_info_struct *ptr_adts_crc_info; 117 118 WORD32 cnt_bits = 0; 119 120 WORD32 eld_sbr_flag = eld_specific_config.ld_sbr_flag_present; 121 WORD32 ld_sbr_crc_flag = eld_specific_config.ld_sbr_crc_flag; 122 WORD32 aac_spect_data_resil_flag = 123 eld_specific_config.aac_spect_data_resil_flag; 124 125 WORD32 ele_ch = 0; 126 127 ia_aac_sfb_code_book_struct *ptr_aac_sfb_code_book_data[CHANNELS]; 128 ia_pns_stereo_data_struct *ptr_pns_stereo_data; 129 130 WORD32 *work_buffer_core = aac_scratch_ptrs->base_scr_8k; 131 WORD32 *work_buffer_1 = aac_scratch_ptrs->extra_scr_4k[0]; 132 WORD32 *work_buffer_2 = aac_scratch_ptrs->extra_scr_4k[2]; 133 p_state_enhaacplus_dec = p_obj_exhaacplus_dec->p_state_aac; 134 135 aac_dec_handle = p_state_enhaacplus_dec->pstr_aac_dec_info[*ch_idx]; 136 it_bit_buff = p_state_enhaacplus_dec->ptr_bit_stream; 137 138 ptr_adts_crc_info = it_bit_buff->pstr_adts_crc_info; 139 140 latm_element = &p_state_enhaacplus_dec->latm_struct_element; 141 142 ptr_pns_stereo_data = 143 (ia_pns_stereo_data_struct 144 *)&work_buffer_1[2 * SIZEOF_INT(ia_aac_dec_channel_info_struct) + 145 2 * SIZEOF_INT(ia_aac_sfb_code_book_struct)]; 146 147 aac_dec_handle->frame_status = 1; 148 149 for (ch = 0; ch < channel; ch++) { 150 const ia_aac_dec_imdct_tables_struct *pstr_imdct_tables; 151 aac_dec_handle->pstr_aac_dec_ch_info[ch] = 152 (ia_aac_dec_channel_info_struct 153 *)&work_buffer_1[ch * SIZEOF_INT(ia_aac_dec_channel_info_struct)]; 154 ptr_aac_sfb_code_book_data[ch] = 155 (ia_aac_sfb_code_book_struct 156 *)&work_buffer_1[2 * SIZEOF_INT(ia_aac_dec_channel_info_struct) + 157 (ch * SIZEOF_INT(ia_aac_sfb_code_book_struct))]; 158 159 aac_dec_handle->pstr_aac_dec_ch_info[ch]->ptr_scale_factor = 160 ptr_aac_sfb_code_book_data[ch]->scale_factor; 161 aac_dec_handle->pstr_aac_dec_ch_info[ch]->ptr_code_book = 162 ptr_aac_sfb_code_book_data[ch]->code_book; 163 164 aac_dec_handle->pstr_aac_dec_ch_info[ch]->ptr_spec_coeff = 165 &work_buffer_core[ch * MAX_BINS_LONG]; 166 167 if (object_type == AOT_ER_AAC_ELD) { 168 aac_dec_handle->pstr_aac_dec_ch_info[ch]->ptr_spec_coeff = 169 &work_buffer_core[2 * ch * MAX_BINS_LONG]; 170 } 171 172 aac_dec_handle->pstr_aac_dec_ch_info[ch]->pstr_stereo_info = 173 &ptr_pns_stereo_data->str_stereo_info; 174 aac_dec_handle->pstr_aac_dec_ch_info[ch]->pstr_pns_corr_info = 175 &ptr_pns_stereo_data->str_pns_corr_info; 176 aac_dec_handle->pstr_aac_dec_ch_info[ch]->pstr_pns_rand_vec_data = 177 aac_dec_handle->pstr_pns_rand_vec_data; 178 179 pstr_imdct_tables = aac_dec_handle->pstr_aac_tables->pstr_imdct_tables; 180 181 aac_dec_handle->pstr_aac_dec_overlap_info[ch]->ptr_long_window[0] = 182 pstr_imdct_tables->only_long_window_sine; 183 aac_dec_handle->pstr_aac_dec_overlap_info[ch]->ptr_short_window[0] = 184 pstr_imdct_tables->only_short_window_sine; 185 aac_dec_handle->pstr_aac_dec_overlap_info[ch]->ptr_long_window[1] = 186 pstr_imdct_tables->only_long_window_kbd; 187 aac_dec_handle->pstr_aac_dec_overlap_info[ch]->ptr_short_window[1] = 188 pstr_imdct_tables->only_short_window_kbd; 189 190 aac_dec_handle->ptr_aac_dec_static_channel_info[ch]->ptr_long_window[0] = 191 pstr_imdct_tables->only_long_window_sine; 192 aac_dec_handle->ptr_aac_dec_static_channel_info[ch]->ptr_short_window[0] = 193 pstr_imdct_tables->only_short_window_sine; 194 aac_dec_handle->ptr_aac_dec_static_channel_info[ch]->ptr_long_window[1] = 195 pstr_imdct_tables->only_long_window_kbd; 196 aac_dec_handle->ptr_aac_dec_static_channel_info[ch]->ptr_short_window[1] = 197 pstr_imdct_tables->only_short_window_kbd; 198 199 if (object_type == AOT_ER_AAC_ELD || object_type == AOT_ER_AAC_LD || 200 object_type == AOT_AAC_LTP) { 201 aac_dec_handle->pstr_aac_dec_ch_info[ch]->str_ics_info.frame_length = 202 frame_length; 203 204 if (512 == aac_dec_handle->samples_per_frame) { 205 if (object_type != AOT_ER_AAC_ELD) { 206 aac_dec_handle->pstr_aac_dec_overlap_info[ch]->ptr_long_window[1] = 207 (WORD16 *)pstr_imdct_tables->low_overlap_win; 208 aac_dec_handle->pstr_aac_dec_overlap_info[ch]->ptr_long_window[0] = 209 (WORD16 *)pstr_imdct_tables->window_sine_512; 210 211 aac_dec_handle->ptr_aac_dec_static_channel_info[ch] 212 ->ptr_long_window[1] = 213 (WORD16 *)pstr_imdct_tables->low_overlap_win; 214 aac_dec_handle->ptr_aac_dec_static_channel_info[ch] 215 ->ptr_long_window[0] = 216 (WORD16 *)pstr_imdct_tables->window_sine_512; 217 } else { 218 aac_dec_handle->pstr_aac_dec_overlap_info[ch]->ptr_long_window[1] = 219 (WORD16 *)pstr_imdct_tables->window_sine_512_eld; 220 aac_dec_handle->pstr_aac_dec_overlap_info[ch]->ptr_long_window[0] = 221 (WORD16 *)pstr_imdct_tables->window_sine_512_eld; 222 } 223 } else if (480 == aac_dec_handle->samples_per_frame) { 224 if (object_type != AOT_ER_AAC_ELD) { 225 aac_dec_handle->pstr_aac_dec_overlap_info[ch]->ptr_long_window[1] = 226 (WORD16 *)pstr_imdct_tables->low_overlap_win_480; 227 aac_dec_handle->pstr_aac_dec_overlap_info[ch]->ptr_long_window[0] = 228 (WORD16 *)pstr_imdct_tables->window_sine_480; 229 230 aac_dec_handle->ptr_aac_dec_static_channel_info[ch] 231 ->ptr_long_window[1] = 232 (WORD16 *)pstr_imdct_tables->low_overlap_win_480; 233 aac_dec_handle->ptr_aac_dec_static_channel_info[ch] 234 ->ptr_long_window[0] = 235 (WORD16 *)pstr_imdct_tables->window_sine_480; 236 237 } else { 238 aac_dec_handle->pstr_aac_dec_overlap_info[ch]->ptr_long_window[1] = 239 (WORD16 *)pstr_imdct_tables->window_sine_480_eld; 240 aac_dec_handle->pstr_aac_dec_overlap_info[ch]->ptr_long_window[0] = 241 (WORD16 *)pstr_imdct_tables->window_sine_480_eld; 242 } 243 } 244 } 245 if ((object_type == AOT_ER_AAC_LD) || (object_type == AOT_AAC_LTP)) { 246 if (aac_dec_handle->samples_per_frame <= 512) { 247 aac_dec_handle->pstr_aac_dec_ch_info[ch]->str_ics_info.ltp.lag = 248 aac_dec_handle->ptr_aac_dec_static_channel_info[ch]->ltp_lag; 249 } 250 aac_dec_handle->pstr_aac_dec_ch_info[ch]->ltp_buf = 251 aac_dec_handle->ptr_aac_dec_static_channel_info[ch]->ltp_buf; 252 aac_dec_handle->pstr_aac_dec_ch_info[ch]->ltp_lag = 253 aac_dec_handle->ptr_aac_dec_static_channel_info[ch]->ltp_lag; 254 } 255 256 aac_dec_handle->pstr_aac_dec_ch_info[ch]->scratch_buf_ptr = work_buffer_2; 257 if (object_type == AOT_ER_AAC_ELD) { 258 aac_dec_handle->pstr_aac_dec_ch_info[ch]->pulse_scratch = 259 aac_scratch_ptrs->extra_scr_4k[3]; 260 } 261 } 262 263 if (channel == 2) { 264 if (aac_dec_handle->pstr_aac_dec_ch_info[1]->ptr_spec_coeff == 265 aac_scratch_ptrs->extra_scr_4k[0]) { 266 aac_dec_handle->pstr_aac_dec_ch_info[1]->ptr_spec_coeff = 267 aac_dec_handle->pstr_aac_dec_ch_info[0]->ptr_spec_coeff; 268 } 269 } 270 271 for (ch = 0; ch < channel; ch++) { 272 ia_pns_info_struct *ptr_pns_info = 273 &aac_dec_handle->pstr_aac_dec_ch_info[ch]->str_pns_info; 274 memset(ptr_pns_info, 0, sizeof(ia_pns_info_struct)); 275 } 276 277 { 278 ia_pns_correlation_info_struct *ptr_corr_info = 279 aac_dec_handle->pstr_aac_dec_ch_info[0]->pstr_pns_corr_info; 280 memset(ptr_corr_info->correlated, 0, sizeof(UWORD8) * PNS_BAND_FLAGS_SIZE); 281 } 282 283 for (ch = 0; ch < channel; ch++) { 284 memset(&aac_dec_handle->pstr_aac_dec_ch_info[ch]->str_hcr_info, 0, 285 sizeof(ia_hcr_info_struct)); 286 ixheaacd_huff_code_reorder_tbl_init( 287 &aac_dec_handle->pstr_aac_dec_ch_info[ch]->str_hcr_info); 288 } 289 290 for (ch = 0; ch < channel; ch++) { 291 aac_dec_handle->pstr_aac_dec_ch_info[ch]->str_ics_info.ltp.data_present = 0; 292 aac_dec_handle->pstr_aac_dec_ch_info[ch]->str_ics_info.ltp2.data_present = 293 0; 294 } 295 296 previous_element = ID_END; 297 298 aac_dec_handle->pstr_sbr_bitstream->no_elements = 0; 299 new_element = 0; 300 ele_type = *type; 301 302 cnt_bits = it_bit_buff->cnt_bits; 303 304 if (((object_type != AOT_ER_AAC_ELD) && (object_type != AOT_ER_AAC_LD)) || 305 (object_type < ER_OBJECT_START)) { 306 while (ele_type != ID_END && aac_dec_handle->frame_status) { 307 ele_type = (WORD)ixheaacd_read_bits_buf(it_bit_buff, 3); 308 ixheaacd_read_bidirection(it_bit_buff, -3); 309 310 if (it_bit_buff->cnt_bits < 3) { 311 it_bit_buff->cnt_bits = -1; 312 error_code = (WORD16)( 313 (WORD32)IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES); 314 break; 315 } 316 317 if ((ele_type == ID_FIL) || (ele_type == ID_DSE) || (new_element == 0)) { 318 ele_type = (WORD)ixheaacd_read_bits_buf(it_bit_buff, 3); 319 new_element = 1; 320 } else if ((ele_type != ID_END)) { 321 ele_type = -1; 322 break; 323 } else { 324 ele_type = (WORD)ixheaacd_read_bits_buf(it_bit_buff, 3); 325 } 326 327 if (it_bit_buff->cnt_bits < 0) { 328 aac_dec_handle->frame_status = 0; 329 } 330 331 switch (ele_type) { 332 case ID_SCE: 333 case ID_CPE: 334 case ID_LFE: 335 336 if (aac_dec_handle->frame_status) { 337 ia_aac_dec_channel_info_struct *pstr_aac_dec_ch_info = 338 aac_dec_handle->pstr_aac_dec_ch_info[LEFT]; 339 ia_ics_info_struct *ptr_ics_info = 340 &pstr_aac_dec_ch_info->str_ics_info; 341 ele_ch = 1; 342 if (ele_type == ID_CPE) { 343 ele_ch = 2; 344 } else { 345 ele_ch = 1; 346 } 347 348 prev_data_ele_present = 1; 349 350 if (ptr_adts_crc_info->crc_active == 1 && 351 ptr_adts_crc_info->no_reg < 7) { 352 crc_reg = ixheaacd_adts_crc_start_reg( 353 ptr_adts_crc_info, it_bit_buff, CRC_ADTS_RAW_DATA_BLK_LEN); 354 } 355 356 pstr_aac_dec_ch_info->element_instance_tag = 357 (WORD16)ixheaacd_read_bits_buf(it_bit_buff, 4); 358 359 element_index_order[*ch_idx] = 360 pstr_aac_dec_ch_info->element_instance_tag; 361 pstr_aac_dec_ch_info->common_window = 0; 362 363 ptr_ics_info->num_swb_window = 0; 364 ptr_ics_info->sampling_rate_index = 365 aac_dec_handle->sampling_rate_index; 366 if ((object_type == AOT_ER_AAC_LD) || 367 (object_type == AOT_AAC_LTP)) { 368 ptr_ics_info->ltp.data_present = 0; 369 ptr_ics_info->ltp2.data_present = 0; 370 ptr_ics_info->predictor_data_present = 0; 371 } 372 373 if (ele_ch > 1) { 374 aac_dec_handle->pstr_aac_dec_ch_info[RIGHT] 375 ->str_ics_info.num_swb_window = 0; 376 aac_dec_handle->pstr_aac_dec_ch_info[RIGHT] 377 ->str_ics_info.sampling_rate_index = 378 aac_dec_handle->sampling_rate_index; 379 380 pstr_aac_dec_ch_info->common_window = 381 (WORD16)ixheaacd_read_bits_buf(it_bit_buff, 1); 382 383 if (pstr_aac_dec_ch_info->common_window) { 384 error_code = ixheaacd_ics_read( 385 it_bit_buff, ptr_ics_info, aac_dec_handle->num_swb_window, 386 object_type, pstr_aac_dec_ch_info->common_window, 387 aac_dec_handle->samples_per_frame); 388 if (error_code) { 389 if (it_bit_buff->cnt_bits < 0) { 390 error_code = (WORD16)( 391 (WORD32) 392 IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES); 393 } 394 395 goto _ia_handle_error; 396 } 397 398 aac_dec_handle->pstr_aac_dec_ch_info[RIGHT]->str_ics_info = 399 pstr_aac_dec_ch_info->str_ics_info; 400 401 ixheaacd_read_ms_data(it_bit_buff, pstr_aac_dec_ch_info); 402 } 403 } 404 405 error_code = ixheaacd_individual_ch_stream( 406 it_bit_buff, aac_dec_handle, ele_ch, frame_length, 407 total_channels, object_type, eld_specific_config, ele_type); 408 409 if (ptr_adts_crc_info->crc_active == 1) { 410 ixheaacd_adts_crc_end_reg(ptr_adts_crc_info, it_bit_buff, 411 crc_reg); 412 } 413 414 if (it_bit_buff->cnt_bits < 0) { 415 error_code = (WORD16)( 416 (WORD32) 417 IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES); 418 } 419 420 if (error_code) { 421 goto _ia_handle_error; 422 } 423 424 _ia_handle_error: 425 if (error_code) { 426 aac_dec_handle->frame_status = 0; 427 if ((ele_type >= ID_SCE) && (ele_type <= ID_LFE)) 428 num_ch = num_ch + ele_ch; 429 break; 430 } else { 431 ixheaacd_channel_pair_process( 432 aac_dec_handle->pstr_aac_dec_ch_info, ele_ch, 433 aac_dec_handle->pstr_aac_tables, total_channels, object_type, 434 aac_spect_data_resil_flag, 435 eld_specific_config.aac_sf_data_resil_flag, 436 aac_scratch_ptrs->in_data, aac_scratch_ptrs->out_data, 437 (void *)aac_dec_handle); 438 num_ch = num_ch + ele_ch; 439 } 440 } 441 442 break; 443 case ID_CCE: 444 if (max_channels > 2) { 445 prev_data_ele_present = 1; 446 error_code = ixheaacd_dec_coupling_channel_element( 447 it_bit_buff, aac_dec_handle, 448 aac_dec_handle->sampling_rate_index, 449 aac_dec_handle->pstr_aac_tables, 450 aac_dec_handle->pstr_common_tables, 451 &element_index_order[*ch_idx], 452 (ia_enhaacplus_dec_ind_cc *)aac_dec_handle->p_ind_channel_info, 453 total_channels, frame_length, object_type, eld_specific_config, 454 ele_type); 455 456 num_ch = num_ch + 1; 457 458 if (error_code) { 459 aac_dec_handle->frame_status = 0; 460 461 break; 462 } else { 463 ixheaacd_channel_pair_process( 464 aac_dec_handle->pstr_aac_dec_ch_info, 1, 465 aac_dec_handle->pstr_aac_tables, total_channels, object_type, 466 aac_spect_data_resil_flag, 467 eld_specific_config.aac_sf_data_resil_flag, 468 aac_scratch_ptrs->in_data, aac_scratch_ptrs->out_data, 469 (void *)aac_dec_handle); 470 } 471 } else { 472 error_code = 473 (WORD32)((WORD32)IA_ENHAACPLUS_DEC_EXE_FATAL_UNIMPLEMENTED_CCE); 474 } 475 if (it_bit_buff->cnt_bits < 0) { 476 error_code = (WORD16)(( 477 WORD32)IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES); 478 goto _ia_handle_error; 479 } 480 break; 481 482 case ID_DSE: 483 case ID_PCE: 484 case ID_FIL: 485 486 { 487 WORD32 flag = 1; 488 489 if ((ele_type != ID_FIL) && (ptr_adts_crc_info->crc_active == 1) && 490 (ptr_adts_crc_info->no_reg < 7)) { 491 crc_reg = 492 ixheaacd_adts_crc_start_reg(ptr_adts_crc_info, it_bit_buff, 0); 493 } 494 if (ele_type == ID_DSE) { 495 ixheaacd_read_data_stream_element( 496 it_bit_buff, &aac_dec_handle->byte_align_bits, 497 p_obj_exhaacplus_dec->p_state_aac->pstr_drc_dec); 498 } 499 500 else if (ele_type == ID_PCE) { 501 error_code = ixheaacd_decode_pce( 502 it_bit_buff, 503 &p_obj_exhaacplus_dec->aac_config.ui_pce_found_in_hdr, 504 &p_obj_exhaacplus_dec->aac_config.str_prog_config); 505 if (error_code != 0) { 506 if (it_bit_buff->cnt_bits < 0) { 507 error_code = (WORD16)( 508 (WORD32) 509 IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES); 510 goto _ia_handle_error; 511 } 512 aac_dec_handle->frame_status = 0; 513 if (error_code > 0) { 514 error_code = IA_ENHAACPLUS_DEC_EXE_NONFATAL_DECODE_FRAME_ERROR; 515 return error_code; 516 } else { 517 return error_code; 518 } 519 } 520 } 521 522 else if (ele_type == ID_FIL) { 523 WORD32 bits_decoded = 0; 524 if (object_type == AOT_ER_AAC_ELD) { 525 bits_decoded = (it_bit_buff->size - it_bit_buff->cnt_bits); 526 cnt_bits = (frame_size * 8 - bits_decoded); 527 if (adtsheader == 1) { 528 if (cnt_bits > it_bit_buff->cnt_bits) 529 return IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES; 530 } 531 } 532 533 if (ixheaacd_check_for_sbr_payload( 534 it_bit_buff, aac_dec_handle->pstr_sbr_bitstream, 535 (WORD16)previous_element, pstr_drc_dec, object_type, 536 adtsheader, cnt_bits, ld_sbr_crc_flag, drc_dummy)) { 537 flag = 0; 538 } 539 } 540 541 if (it_bit_buff->cnt_bits < 0) { 542 error_code = (WORD16)(( 543 WORD32)IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES); 544 goto _ia_handle_error; 545 } 546 547 if (flag) { 548 if (prev_data_ele_present == 0) { 549 new_element = 0; 550 } 551 } 552 if ((ele_type != ID_FIL) && (ptr_adts_crc_info->crc_active == 1)) { 553 ixheaacd_adts_crc_end_reg(ptr_adts_crc_info, it_bit_buff, crc_reg); 554 } 555 556 if (ele_type == ID_PCE) { 557 if (ptr_adts_crc_info->str_crc_reg_data[crc_reg].bit_buf_cnt) { 558 ptr_adts_crc_info->str_crc_reg_data[crc_reg].max_bits = 559 ptr_adts_crc_info->str_crc_reg_data[crc_reg].bit_buf_cnt; 560 } 561 } 562 } 563 564 break; 565 566 case ID_END: 567 error_code = 0; 568 break; 569 } 570 571 previous_element = ele_type; 572 573 if (init_flag) { 574 if ((ele_type >= ID_SCE) && (ele_type <= ID_LFE)) { 575 p_obj_exhaacplus_dec->aac_config.element_type[*ch_idx] = ele_type; 576 } 577 } 578 } 579 } else { 580 { 581 switch (ch_config) { 582 default: 583 if (aac_dec_handle->frame_status) { 584 ia_aac_dec_channel_info_struct *pstr_aac_dec_ch_info = 585 aac_dec_handle->pstr_aac_dec_ch_info[LEFT]; 586 ia_ics_info_struct *ptr_ics_info = 587 &pstr_aac_dec_ch_info->str_ics_info; 588 589 if (ch_config == 2) 590 ele_ch = 2, ele_type = 1; 591 else 592 ele_ch = 1, ele_type = 0; 593 594 prev_data_ele_present = 1; 595 596 if ((ptr_adts_crc_info->crc_active == 1) && 597 (ptr_adts_crc_info->no_reg < 7)) { 598 crc_reg = ixheaacd_adts_crc_start_reg( 599 ptr_adts_crc_info, it_bit_buff, CRC_ADTS_RAW_DATA_BLK_LEN); 600 } 601 602 if (object_type != AOT_ER_AAC_ELD) 603 pstr_aac_dec_ch_info->element_instance_tag = 604 (WORD16)ixheaacd_read_bits_buf(it_bit_buff, 4); 605 606 element_index_order[*ch_idx] = 607 pstr_aac_dec_ch_info->element_instance_tag; 608 pstr_aac_dec_ch_info->common_window = 0; 609 610 ptr_ics_info->num_swb_window = 0; 611 ptr_ics_info->sampling_rate_index = 612 aac_dec_handle->sampling_rate_index; 613 614 if (object_type == AOT_ER_AAC_LD) { 615 ptr_ics_info->ltp.data_present = 0; 616 ptr_ics_info->ltp2.data_present = 0; 617 ptr_ics_info->predictor_data_present = 0; 618 } 619 if (ele_ch > 1) { 620 aac_dec_handle->pstr_aac_dec_ch_info[RIGHT] 621 ->str_ics_info.num_swb_window = 0; 622 aac_dec_handle->pstr_aac_dec_ch_info[RIGHT] 623 ->str_ics_info.sampling_rate_index = 624 aac_dec_handle->sampling_rate_index; 625 626 if (object_type != 39) 627 pstr_aac_dec_ch_info->common_window = 628 (WORD16)ixheaacd_read_bits_buf(it_bit_buff, 1); 629 else 630 pstr_aac_dec_ch_info->common_window = 1; 631 632 if (pstr_aac_dec_ch_info->common_window) { 633 error_code = ixheaacd_ics_read( 634 it_bit_buff, ptr_ics_info, aac_dec_handle->num_swb_window, 635 object_type, pstr_aac_dec_ch_info->common_window, 636 aac_dec_handle->samples_per_frame); 637 if (error_code) { 638 if (it_bit_buff->cnt_bits < 0) { 639 error_code = (WORD16)( 640 (WORD32) 641 IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES); 642 } 643 644 goto _ia_handle_error1; 645 } 646 647 aac_dec_handle->pstr_aac_dec_ch_info[RIGHT]->str_ics_info = 648 pstr_aac_dec_ch_info->str_ics_info; 649 650 ixheaacd_read_ms_data(it_bit_buff, pstr_aac_dec_ch_info); 651 652 { 653 if (object_type == AOT_ER_AAC_LD) { 654 WORD16 temp = ixheaacd_ltp_decode( 655 it_bit_buff, ptr_ics_info, object_type, 656 aac_dec_handle->samples_per_frame, LEFT); 657 658 if (temp != 0) { 659 return temp; 660 } 661 } 662 } 663 } 664 } 665 666 error_code = ixheaacd_individual_ch_stream( 667 it_bit_buff, aac_dec_handle, ele_ch, frame_length, 668 total_channels, object_type, eld_specific_config, ele_type); 669 670 if (ptr_adts_crc_info->crc_active == 1) { 671 ixheaacd_adts_crc_end_reg(ptr_adts_crc_info, it_bit_buff, 672 crc_reg); 673 } 674 675 if (it_bit_buff->cnt_bits < 0) { 676 error_code = (WORD16)( 677 (WORD32) 678 IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES); 679 } 680 681 if (error_code) { 682 goto _ia_handle_error1; 683 } 684 685 _ia_handle_error1: 686 if (error_code) { 687 aac_dec_handle->frame_status = 0; 688 if ((ele_type >= ID_SCE) && (ele_type <= ID_LFE)) 689 num_ch = num_ch + ele_ch; 690 break; 691 } else { 692 ixheaacd_channel_pair_process( 693 aac_dec_handle->pstr_aac_dec_ch_info, ele_ch, 694 aac_dec_handle->pstr_aac_tables, total_channels, object_type, 695 aac_spect_data_resil_flag, 696 eld_specific_config.aac_sf_data_resil_flag, 697 aac_scratch_ptrs->in_data, aac_scratch_ptrs->out_data, 698 (void *)aac_dec_handle); 699 num_ch = num_ch + ele_ch; 700 } 701 } 702 703 p_obj_exhaacplus_dec->aac_config.element_type[*ch_idx] = ele_ch - 1; 704 break; 705 } 706 707 if ((object_type != AOT_ER_AAC_ELD) || (!eld_sbr_flag)) { 708 WORD32 bits_decoded, cnt_bits; 709 bits_decoded = (it_bit_buff->size - it_bit_buff->cnt_bits); 710 711 cnt_bits = (frame_size * 8 - bits_decoded); 712 if (cnt_bits >= 8) { 713 ixheaacd_extension_payload(it_bit_buff, cnt_bits); 714 } 715 716 if (((object_type == AOT_ER_AAC_ELD) || 717 (object_type == AOT_ER_AAC_LD)) && 718 (p_obj_exhaacplus_dec->aac_config.ld_decoder != 1)) { 719 if (it_bit_buff->cnt_bits) { 720 WORD32 alignment = it_bit_buff->bit_pos & 0x07; 721 it_bit_buff->cnt_bits = (it_bit_buff->cnt_bits + alignment) & 7; 722 it_bit_buff->bit_pos = 7; 723 it_bit_buff->ptr_read_next++; 724 } 725 } else { 726 if (it_bit_buff->bit_pos != 7) { 727 WORD32 alignment = it_bit_buff->bit_pos & 0x07; 728 it_bit_buff->cnt_bits -= alignment + 1; 729 it_bit_buff->bit_pos += 7 - alignment; 730 it_bit_buff->ptr_read_next++; 731 } 732 } 733 } else { 734 WORD32 bits_decoded, cnt_bits; 735 bits_decoded = (it_bit_buff->size - it_bit_buff->cnt_bits); 736 cnt_bits = (frame_size * 8 - bits_decoded); 737 if (adtsheader == 1) { 738 if (cnt_bits > it_bit_buff->cnt_bits) 739 return IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES; 740 } 741 ixheaacd_check_for_sbr_payload( 742 it_bit_buff, aac_dec_handle->pstr_sbr_bitstream, 743 (WORD16)(ch_config - 1), pstr_drc_dec, object_type, adtsheader, 744 cnt_bits, ld_sbr_crc_flag, drc_dummy); 745 } 746 } 747 } 748 749 if (ele_type == ID_END && 750 p_state_enhaacplus_dec->bs_format == LOAS_BSFORMAT) { 751 WORD32 tmp; 752 tmp = ((WORD32)latm_element->layer_info[0][0].frame_len_bits) - 753 (it_bit_buff->initial_cnt_bits - it_bit_buff->cnt_bits); 754 755 if (tmp > 0) ixheaacd_read_bidirection(it_bit_buff, tmp); 756 757 if (latm_element->other_data_present) { 758 WORD32 count_bits = (WORD32)latm_element->other_data_length; 759 ixheaacd_read_bidirection(it_bit_buff, count_bits); 760 } 761 } 762 763 if (object_type == AOT_ER_AAC_LD) { 764 for (ch = 0; ch < channel; ch++) { 765 aac_dec_handle->ptr_aac_dec_static_channel_info[ch]->ltp_lag = 766 aac_dec_handle->pstr_aac_dec_ch_info[ch]->str_ics_info.ltp.lag; 767 } 768 } 769 aac_dec_handle->frame_status = aac_dec_handle->frame_status && frame_status; 770 771 aac_dec_handle->channels = num_ch; 772 773 if (error_code == 0) 774 if ((skip_full_decode == 0) || ((skip_full_decode == 1) && error_code)) { 775 ia_ics_info_struct str_ics_info[2]; 776 WORD32 *spec_coef[2]; 777 WORD32 *scratch[2]; 778 779 for (ch = 0; ch < channel; ch++) { 780 str_ics_info[ch] = 781 aac_dec_handle->pstr_aac_dec_ch_info[ch]->str_ics_info; 782 spec_coef[ch] = 783 aac_dec_handle->pstr_aac_dec_ch_info[ch]->ptr_spec_coeff; 784 } 785 786 scratch[0] = (WORD32 *)aac_scratch_ptrs->extra_scr_4k[2]; 787 scratch[1] = (WORD32 *)aac_scratch_ptrs->extra_scr_4k[1]; 788 789 ixheaacd_drc_map_channels( 790 pstr_drc_dec, aac_dec_handle->channels, 791 aac_dec_handle->pstr_aac_dec_ch_info[0]->str_ics_info.frame_length); 792 793 for (ch = 0; ch < aac_dec_handle->channels; ch++) { 794 WORD32 *overlap1 = aac_dec_handle->ptr_aac_dec_static_channel_info[ch] 795 ->overlap_add_data.ptr_overlap_buf; 796 const WORD16 *ptr_long_window_next = 797 aac_dec_handle->ptr_aac_dec_static_channel_info[ch] 798 ->ptr_long_window[(int)str_ics_info[ch].window_shape]; 799 const WORD16 *ptr_short_window_next = 800 aac_dec_handle->ptr_aac_dec_static_channel_info[ch] 801 ->ptr_short_window[(int)str_ics_info[ch].window_shape]; 802 if (pstr_drc_dec->drc_on) { 803 ixheaacd_drc_apply(pstr_drc_dec, spec_coef[ch], 804 str_ics_info[ch].window_sequence, ch, 805 str_ics_info[ch].frame_length); 806 } 807 if (skip_full_decode == 0) { 808 ixheaacd_imdct_process( 809 aac_dec_handle->pstr_aac_dec_overlap_info[ch], spec_coef[ch], 810 &str_ics_info[ch], time_data + slot_element, (WORD16)ch_fac, 811 scratch[ch], aac_dec_handle->pstr_aac_tables, object_type); 812 813 aac_dec_handle->ptr_aac_dec_static_channel_info[ch] 814 ->overlap_add_data.win_shape = str_ics_info[ch].window_shape; 815 aac_dec_handle->ptr_aac_dec_static_channel_info[ch] 816 ->overlap_add_data.win_seq = str_ics_info[ch].window_sequence; 817 if ((object_type == AOT_ER_AAC_LD) || (object_type == AOT_AAC_LTP)) { 818 { 819 if ((str_ics_info[ch].window_sequence == ONLY_LONG_SEQUENCE) || 820 (str_ics_info[ch].window_sequence == LONG_STOP_SEQUENCE)) { 821 ixheaacd_lt_update_state( 822 aac_dec_handle->ptr_aac_dec_static_channel_info[ch] 823 ->ltp_buf, 824 time_data + slot_element, overlap1, 825 aac_dec_handle->samples_per_frame, object_type, 826 (WORD16)ch_fac, str_ics_info[ch].window_sequence, 827 (WORD16 *)ptr_long_window_next); 828 } else { 829 ixheaacd_lt_update_state( 830 aac_dec_handle->ptr_aac_dec_static_channel_info[ch] 831 ->ltp_buf, 832 time_data + slot_element, overlap1, 833 aac_dec_handle->samples_per_frame, object_type, 834 (WORD16)ch_fac, str_ics_info[ch].window_sequence, 835 (WORD16 *)ptr_short_window_next); 836 } 837 } 838 } 839 slot_element++; 840 } 841 } 842 } 843 844 if (ele_type == ID_END) { 845 ixheaacd_byte_align(it_bit_buff, &aac_dec_handle->byte_align_bits); 846 if (p_state_enhaacplus_dec->bs_format == LOAS_BSFORMAT) { 847 ixheaacd_byte_align(it_bit_buff, &it_bit_buff->audio_mux_align); 848 } 849 } 850 *type = ele_type; 851 852 aac_dec_handle->block_number = 853 ixheaacd_add32(aac_dec_handle->block_number, 1); 854 return error_code; 855 } 856 857 WORD32 ixheaacd_extension_payload(ia_bit_buf_struct *it_bit_buff, WORD32 cnt) { 858 WORD16 extension_type, discard; 859 WORD32 i; 860 WORD32 fill_nibble; 861 862 WORD32 err = 0; 863 extension_type = (WORD16)ixheaacd_read_bits_buf(it_bit_buff, 4); 864 switch (extension_type) { 865 case EXT_FILL_DATA: 866 867 fill_nibble = ixheaacd_read_bits_buf(it_bit_buff, 4); 868 869 if (fill_nibble == 0) { 870 for (i = 0; i < (cnt >> 3) - 1; i++) { 871 ixheaacd_read_bits_buf(it_bit_buff, 8); 872 } 873 874 } else 875 err = -1; 876 break; 877 case EXT_FIL: 878 default: 879 for (i = 0; i < ((cnt)-8) + 4; i++) { 880 discard = (WORD16)ixheaacd_read_bits_buf(it_bit_buff, 1); 881 } 882 } 883 884 return err; 885 } 886
