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_sbr_common.h"
22 #include <ixheaacd_type_def.h>
23
24 #include "ixheaacd_constants.h"
25 #include <ixheaacd_basic_ops32.h>
26 #include <ixheaacd_basic_ops16.h>
27 #include <ixheaacd_basic_ops40.h>
28 #include "ixheaacd_basic_ops.h"
29 #include "ixheaacd_defines.h"
30
31 #include "ixheaacd_intrinsics.h"
32 #include "ixheaacd_sbr_const.h"
33 #include <ixheaacd_basic_op.h>
34 #include "ixheaacd_defines.h"
35 #include "ixheaacd_bitbuffer.h"
36 #include "ixheaacd_pns.h"
37
38 #include <ixheaacd_aac_rom.h>
39 #include "ixheaacd_pulsedata.h"
40
41 #include "ixheaacd_drc_data_struct.h"
42 #include "ixheaacd_lt_predict.h"
43 #include "ixheaacd_channelinfo.h"
44 #include "ixheaacd_drc_dec.h"
45
46 #include "ixheaacd_sbrdecoder.h"
47
48 #include "ixheaacd_sbrdecsettings.h"
49 #include "ixheaacd_sbr_scale.h"
50 #include "ixheaacd_lpp_tran.h"
51 #include "ixheaacd_env_extr_part.h"
52 #include <ixheaacd_sbr_rom.h>
53 #include "ixheaacd_hybrid.h"
54 #include "ixheaacd_ps_dec.h"
55 #include "ixheaacd_ps_bitdec.h"
56 #include "ixheaacd_env_extr.h"
57 #include "ixheaacd_common_rom.h"
58 #include "ixheaacd_freq_sca.h"
59
60 #include "ixheaacd_qmf_dec.h"
61
62 #include "ixheaacd_env_calc.h"
63
64 #include "ixheaacd_pvc_dec.h"
65 #include "ixheaacd_sbr_dec.h"
66 #include "ixheaacd_env_dec.h"
67 #include "ixheaacd_basic_funcs.h"
68 #include "ixheaacd_sbr_crc.h"
69
70 #include "ixheaacd_audioobjtypes.h"
71
ixheaacd_downmix_to_monosbr(WORD16 * core_sample_buf,WORD32 ch_fac)72 VOID ixheaacd_downmix_to_monosbr(WORD16 *core_sample_buf, WORD32 ch_fac) {
73 WORD32 i;
74 WORD16 *ptr1 = &core_sample_buf[0];
75 WORD16 *ptr2 = &core_sample_buf[1];
76
77 for (i = MAX_FRAME_SIZE - 1; i >= 0; i--) {
78 *ptr1 = ((*ptr1 >> 1) + (*ptr2 >> 1));
79
80 ptr1 += ch_fac;
81 ptr2 += ch_fac;
82 }
83 }
84
ixheaacd_sbr_dec_reset(ia_sbr_dec_struct * ptr_sbr_dec,ia_sbr_header_data_struct * ptr_header_data,FLAG low_pow_flag,ixheaacd_misc_tables * pstr_common_tables,WORD32 pitch_in_bins,WORD32 audio_object_type)85 static WORD32 ixheaacd_sbr_dec_reset(ia_sbr_dec_struct *ptr_sbr_dec,
86 ia_sbr_header_data_struct *ptr_header_data,
87 FLAG low_pow_flag,
88 ixheaacd_misc_tables *pstr_common_tables,
89 WORD32 pitch_in_bins,
90 WORD32 audio_object_type) {
91 WORD32 old_lsb, new_lsb;
92 WORD32 l;
93 WORD32 err = 0;
94 WORD32 num_time_slots = ptr_sbr_dec->str_codec_qmf_bank.num_time_slots;
95 WORD32 upsample_ratio_idx = ptr_header_data->sbr_ratio_idx;
96 WORD32 op_delay = 6 + SBR_HF_ADJ_OFFSET;
97 WORD32 hbe_flag = ptr_header_data->hbe_flag;
98 WORD32 usac_flag = ptr_header_data->usac_flag;
99
100 if (ptr_header_data->is_usf_4) {
101 op_delay = op_delay + 6;
102 }
103
104 ixheaacd_reset_sbrenvelope_calc(&ptr_sbr_dec->str_sbr_calc_env);
105
106 new_lsb = ptr_header_data->pstr_freq_band_data->sub_band_start;
107 ptr_sbr_dec->str_synthesis_qmf_bank.lsb = new_lsb;
108 ptr_sbr_dec->str_synthesis_qmf_bank.usb =
109 ptr_header_data->pstr_freq_band_data->sub_band_end;
110
111 old_lsb = ptr_sbr_dec->str_synthesis_qmf_bank.lsb;
112 ptr_sbr_dec->str_codec_qmf_bank.lsb = 0;
113 ptr_sbr_dec->str_codec_qmf_bank.usb = old_lsb;
114
115 {
116 WORD32 *plpc_filt_states_real =
117 &ptr_sbr_dec->str_hf_generator.lpc_filt_states_real[0][old_lsb];
118 WORD32 *plpc_filt_states_real_1 =
119 &ptr_sbr_dec->str_hf_generator.lpc_filt_states_real[1][old_lsb];
120
121 WORD32 *plpc_filt_states_imag =
122 &ptr_sbr_dec->str_hf_generator.lpc_filt_states_imag[0][old_lsb];
123 WORD32 *plpc_filt_states_imag_1 =
124 &ptr_sbr_dec->str_hf_generator.lpc_filt_states_imag[1][old_lsb];
125
126 for (l = new_lsb - old_lsb - 1; l >= 0; l--) {
127 *plpc_filt_states_real++ = *plpc_filt_states_real_1++ = 0L;
128
129 if (!low_pow_flag) {
130 *plpc_filt_states_imag++ = *plpc_filt_states_imag_1++ = 0L;
131 }
132 }
133 }
134
135 if (usac_flag) {
136 WORD32 start_band;
137 WORD32 stop_band;
138 WORD32 start_slot = SBR_HF_ADJ_OFFSET;
139 WORD32 k;
140
141 start_band = ptr_header_data->pstr_freq_band_data->qmf_sb_prev;
142 stop_band = ptr_header_data->pstr_freq_band_data->sub_band_start;
143 if (!hbe_flag) {
144 for (l = 0; l < SBR_HF_ADJ_OFFSET; l++) {
145 for (k = start_band; k < stop_band; k++) {
146 ptr_sbr_dec->qmf_buf_real[l][k] = 0.0;
147 ptr_sbr_dec->qmf_buf_imag[l][k] = 0.0;
148 }
149 }
150 for (l = start_slot; l < op_delay; l++) {
151 for (k = start_band; k < stop_band; k++) {
152 ptr_sbr_dec->qmf_buf_real[l][k] = 0.0;
153 ptr_sbr_dec->qmf_buf_imag[l][k] = 0.0;
154 }
155 }
156 }
157 if (hbe_flag && ptr_sbr_dec->p_hbe_txposer != NULL) {
158 WORD32 k, i;
159 WORD32 err = ixheaacd_qmf_hbe_data_reinit(
160 ptr_sbr_dec->p_hbe_txposer,
161 ptr_header_data->pstr_freq_band_data->freq_band_table,
162 ptr_header_data->pstr_freq_band_data->num_sf_bands,
163 ptr_header_data->is_usf_4);
164 if (err) return err;
165
166 for (k = 0; k < 2; k++) {
167 if (!((upsample_ratio_idx == SBR_UPSAMPLE_IDX_4_1) && (k == 0))) {
168 WORD32 xpos_delay = num_time_slots * k;
169 if (upsample_ratio_idx == SBR_UPSAMPLE_IDX_4_1) {
170 xpos_delay = num_time_slots * k - 32;
171 }
172
173 for (i = 0; i < 8; i++) {
174 memmove(ptr_sbr_dec->ph_vocod_qmf_real[i],
175 ptr_sbr_dec->ph_vocod_qmf_real[num_time_slots + i],
176 64 * sizeof(FLOAT32));
177 memmove(ptr_sbr_dec->ph_vocod_qmf_imag[i],
178 ptr_sbr_dec->ph_vocod_qmf_imag[num_time_slots + i],
179 64 * sizeof(FLOAT32));
180 }
181
182 err = ixheaacd_qmf_hbe_apply(
183 ptr_sbr_dec->p_hbe_txposer,
184 ptr_sbr_dec->qmf_buf_real + op_delay + xpos_delay,
185 ptr_sbr_dec->qmf_buf_imag + op_delay + xpos_delay, num_time_slots,
186 ptr_sbr_dec->ph_vocod_qmf_real + op_delay,
187 ptr_sbr_dec->ph_vocod_qmf_imag + op_delay, pitch_in_bins);
188 if (err) return err;
189
190 if (upsample_ratio_idx == SBR_UPSAMPLE_IDX_4_1) {
191 ixheaacd_hbe_repl_spec(&ptr_sbr_dec->p_hbe_txposer->x_over_qmf[0],
192 ptr_sbr_dec->ph_vocod_qmf_real + op_delay,
193 ptr_sbr_dec->ph_vocod_qmf_imag + op_delay,
194 num_time_slots,
195 ptr_sbr_dec->p_hbe_txposer->max_stretch);
196 }
197 }
198 }
199 }
200 }
201
202 if (!usac_flag) {
203 err |= ixheaacd_reset_hf_generator(&ptr_sbr_dec->str_hf_generator,
204 ptr_header_data, audio_object_type);
205
206 err |= ixheaacd_derive_lim_band_tbl(
207 ptr_header_data,
208 ptr_sbr_dec->str_hf_generator.pstr_settings->str_patch_param,
209 ptr_sbr_dec->str_hf_generator.pstr_settings->num_patches,
210 pstr_common_tables);
211 }
212
213 return err;
214 }
215
ixheaacd_prepare_upsamp(ia_sbr_header_data_struct ** ptr_header_data,ia_sbr_channel_struct * pstr_sbr_channel[2],WORD32 num_channels)216 WORD32 ixheaacd_prepare_upsamp(ia_sbr_header_data_struct **ptr_header_data,
217 ia_sbr_channel_struct *pstr_sbr_channel[2],
218 WORD32 num_channels) {
219 WORD16 err = 0;
220 WORD32 lr;
221 ia_sbr_qmf_filter_bank_struct *sbr_qmf_bank;
222
223 for (lr = 0; lr < num_channels; lr++) {
224 ptr_header_data[lr]->pstr_freq_band_data->sub_band_start =
225 NO_ANALYSIS_CHANNELS;
226 ptr_header_data[lr]->pstr_freq_band_data->sub_band_end =
227 NO_SYNTHESIS_CHANNELS;
228
229 sbr_qmf_bank = &pstr_sbr_channel[lr]->str_sbr_dec.str_synthesis_qmf_bank;
230 sbr_qmf_bank->lsb = NO_ANALYSIS_CHANNELS;
231 sbr_qmf_bank->usb = NO_SYNTHESIS_CHANNELS;
232
233 sbr_qmf_bank = &pstr_sbr_channel[lr]->str_sbr_dec.str_codec_qmf_bank;
234 sbr_qmf_bank->lsb = 0;
235 sbr_qmf_bank->usb = NO_ANALYSIS_CHANNELS;
236 ptr_header_data[lr]->sync_state = UPSAMPLING;
237 }
238 return err;
239 }
240
ixheaacd_applysbr(ia_handle_sbr_dec_inst_struct self,ia_aac_dec_sbr_bitstream_struct * p_sbr_bit_stream,WORD16 * core_sample_buf,WORD16 * codec_num_channels,FLAG frame_status,FLAG down_samp_flag,FLAG down_mix_flag,ia_sbr_scr_struct * sbr_scratch_struct,WORD32 ps_enable,WORD32 ch_fac,WORD32 slot_element,ia_bit_buf_struct * it_bit_buff,ia_drc_dec_struct * pstr_drc_dec,WORD eld_sbr_flag,WORD32 audio_object_type)241 IA_ERRORCODE ixheaacd_applysbr(
242 ia_handle_sbr_dec_inst_struct self,
243 ia_aac_dec_sbr_bitstream_struct *p_sbr_bit_stream, WORD16 *core_sample_buf,
244 WORD16 *codec_num_channels, FLAG frame_status, FLAG down_samp_flag,
245 FLAG down_mix_flag, ia_sbr_scr_struct *sbr_scratch_struct, WORD32 ps_enable,
246 WORD32 ch_fac, WORD32 slot_element, ia_bit_buf_struct *it_bit_buff,
247 ia_drc_dec_struct *pstr_drc_dec, WORD eld_sbr_flag,
248 WORD32 audio_object_type) {
249 WORD32 k;
250 FLAG prev_ps_flag = 0;
251 FLAG ps_flag = 0;
252 FLAG stereo = 0;
253 FLAG low_pow_flag = 0;
254 FLAG header_flag = 1;
255 FLAG dual_mono = 0;
256 WORD32 err = 0;
257 WORD32 num_channels = *codec_num_channels;
258 FLAG prev_stereo;
259 WORD32 ele_channels = 0;
260 WORD32 num_elements = p_sbr_bit_stream->no_elements;
261 WORD32 usac_flag = self->aot_usac_flag;
262
263 ia_sbr_channel_struct *pstr_sbr_channel[2];
264 ia_sbr_header_data_struct *ptr_header_data[MAXNRSBRCHANNELS];
265
266 WORD32 initial_sync_state;
267
268 ia_sbr_header_data_struct *ptr_sbr_dflt_header =
269 (ia_sbr_header_data_struct *)(&self->str_sbr_dflt_header);
270
271 ia_sbr_frame_info_data_struct *ptr_frame_data[2];
272
273 for (k = 0; k < 2; k++) {
274 ptr_frame_data[k] = (ia_sbr_frame_info_data_struct *)self->frame_buffer[k];
275
276 pstr_sbr_channel[k] = self->pstr_sbr_channel[k];
277
278 ptr_header_data[k] = self->pstr_sbr_header[k];
279
280 if (audio_object_type == AOT_ER_AAC_ELD) {
281 ptr_frame_data[k]->eld_sbr_flag = eld_sbr_flag;
282 ptr_frame_data[k]->num_time_slots = ptr_header_data[0]->num_time_slots;
283 }
284
285 ptr_frame_data[k]->usac_independency_flag = self->usac_independency_flag;
286 ptr_frame_data[k]->mps_sbr_flag = (self->stereo_config_idx == 3) ? 1 : 0;
287 ptr_frame_data[k]->stereo_config_idx = self->stereo_config_idx;
288 ptr_frame_data[k]->inter_tes_flag = self->inter_tes_flag;
289 ptr_frame_data[k]->sbr_mode = self->sbr_mode;
290
291 if (!usac_flag) {
292 ptr_frame_data[k]->usac_independency_flag = 0;
293 ptr_frame_data[k]->mps_sbr_flag = 0;
294 ptr_frame_data[k]->stereo_config_idx = -1;
295 ptr_frame_data[k]->inter_tes_flag = 0;
296 ptr_frame_data[k]->sbr_mode = ORIG_SBR;
297 }
298 }
299
300 for (k = 0; k < *codec_num_channels; k++) {
301 ptr_header_data[k]->usac_flag = self->aot_usac_flag;
302
303 ptr_header_data[k]->usac_independency_flag = self->usac_independency_flag;
304 ptr_header_data[k]->hbe_flag = self->hbe_flag;
305 ptr_header_data[k]->pvc_flag = self->pvc_flag;
306
307 if (!usac_flag) {
308 ptr_header_data[k]->usac_independency_flag = 0;
309 ptr_header_data[k]->hbe_flag = 0;
310 ptr_header_data[k]->pvc_flag = 0;
311 }
312 }
313
314 initial_sync_state = ptr_header_data[0]->sync_state;
315
316 low_pow_flag = !usac_flag;
317 self->pstr_sbr_tables->sbr_rand_ph =
318 self->pstr_sbr_tables->env_calc_tables_ptr->sbr_rand_ph;
319
320 if (ps_enable) {
321 if (num_channels == 1) {
322 low_pow_flag = 0;
323 }
324 }
325
326 if (audio_object_type == AOT_ER_AAC_ELD) {
327 low_pow_flag = 0;
328 }
329
330 prev_stereo = (ptr_header_data[0]->channel_mode == SBR_STEREO);
331
332 if (ps_enable) prev_ps_flag = (ptr_header_data[0]->channel_mode == PS_STEREO);
333
334 ptr_header_data[0]->err_flag_prev = ptr_header_data[0]->err_flag;
335
336 if (p_sbr_bit_stream->no_elements == 0) {
337 frame_status = 0;
338 ptr_header_data[0]->sync_state = UPSAMPLING;
339 if (num_channels == 2) ptr_header_data[1]->sync_state = UPSAMPLING;
340 }
341
342 if ((usac_flag)) {
343 if ((p_sbr_bit_stream->no_elements) &&
344 (p_sbr_bit_stream->str_sbr_ele->size_payload > 0)) {
345 num_elements = p_sbr_bit_stream->no_elements;
346 } else {
347 num_elements = 0;
348 }
349 }
350
351 for (k = 0; k < num_elements; k++) {
352 struct ia_bit_buf_struct local_bit_buf = {0};
353 ia_sbr_element_stream_struct *ptr_bit_str_ele =
354 &p_sbr_bit_stream->str_sbr_ele[k];
355 ele_channels =
356 (p_sbr_bit_stream->str_sbr_ele[0].sbr_ele_id == SBR_ID_CPE) ? 2 : 1;
357
358 switch (ptr_bit_str_ele->sbr_ele_id) {
359 case SBR_ID_SCE:
360 case SBR_ID_CCE:
361 if (num_channels == 2) {
362 dual_mono = 1;
363 }
364 stereo = 0;
365 break;
366 case SBR_ID_CPE:
367 stereo = 1;
368 ptr_header_data[1] = ptr_header_data[0];
369
370 memcpy(self->pstr_sbr_header[1], self->pstr_sbr_header[0],
371 sizeof(ia_sbr_header_data_struct));
372 break;
373 default:
374 frame_status = 0;
375 }
376
377 if (frame_status) {
378 if (!usac_flag) {
379 ixheaacd_create_init_bit_buf(&local_bit_buf,
380 (UWORD8 *)ptr_bit_str_ele->ptr_sbr_data,
381 ptr_bit_str_ele->size_payload);
382
383 it_bit_buff = &local_bit_buf;
384 it_bit_buff->xaac_jmp_buf = self->xaac_jmp_buf;
385 if (audio_object_type == AOT_ER_AAC_ELD) {
386 if (eld_sbr_flag != 1) {
387 ixheaacd_read_bits_buf(&local_bit_buf, LEN_NIBBLE);
388 }
389 } else {
390 ixheaacd_read_bits_buf(&local_bit_buf, LEN_NIBBLE);
391 }
392 }
393 if (ptr_bit_str_ele->extension_type == SBR_EXTENSION_CRC) {
394 WORD32 crc_bits = 0;
395 WORD32 crc_check_flag = 0;
396 crc_check_flag = 1;
397 crc_bits = (((ptr_bit_str_ele->size_payload - 1) << 3) +
398 (4 - SBR_CYC_REDCY_CHK_BITS));
399
400 if (crc_bits < 0) {
401 crc_check_flag = 0;
402 frame_status = 0;
403 }
404 if (crc_check_flag)
405 frame_status = ixheaacd_sbr_crccheck(it_bit_buff, crc_bits);
406 }
407
408 if (!usac_flag) header_flag = ixheaacd_read_bits_buf(it_bit_buff, 1);
409
410 if (audio_object_type != AOT_ER_AAC_ELD) {
411 if (header_flag) {
412 header_flag = ixheaacd_sbr_read_header_data(
413 ptr_header_data[k], it_bit_buff, stereo, ptr_sbr_dflt_header);
414 if (usac_flag) {
415 if ((self->ptr_pvc_data_str->prev_pvc_mode == 0) &&
416 (ptr_header_data[k]->pvc_mode != 0)) {
417 self->ptr_pvc_data_str->prev_pvc_id = 0;
418 }
419 self->ptr_pvc_data_str->prev_pvc_mode =
420 ptr_header_data[k]->pvc_mode;
421 if (ptr_header_data[k]->pvc_mode == 0) {
422 ptr_frame_data[k]->sbr_mode = ORIG_SBR;
423 } else {
424 ptr_frame_data[k]->sbr_mode = PVC_SBR;
425 }
426 }
427 if (header_flag == SBR_RESET) {
428 err = ixheaacd_calc_frq_bnd_tbls(ptr_header_data[k],
429
430 self->pstr_common_tables);
431 if (!err) {
432 WORD32 lr;
433 WORD32 lr1 = ps_enable ? 2 : num_channels;
434 for (lr = 0; lr < lr1; lr++) {
435 ptr_frame_data[lr]->reset_flag = 1;
436
437 err |= ixheaacd_sbr_dec_reset(
438 &(pstr_sbr_channel[lr]->str_sbr_dec), ptr_header_data[k],
439 low_pow_flag, self->pstr_common_tables,
440 ptr_frame_data[k]->pitch_in_bins, audio_object_type);
441 if (err < 0) return err;
442 }
443 }
444
445 if (err == 0) {
446 ptr_header_data[k]->sync_state = SBR_ACTIVE;
447 }
448 }
449 }
450 } else {
451 if (header_flag) {
452 header_flag = ixheaacd_sbr_read_header_data(
453 ptr_header_data[k], it_bit_buff, stereo, ptr_sbr_dflt_header);
454 if (usac_flag) {
455 if ((self->ptr_pvc_data_str->prev_pvc_mode == 0) &&
456 (ptr_header_data[k]->pvc_mode != 0)) {
457 self->ptr_pvc_data_str->prev_pvc_id = 0;
458 }
459 self->ptr_pvc_data_str->prev_pvc_mode =
460 ptr_header_data[k]->pvc_mode;
461 if (ptr_header_data[k]->pvc_mode == 0) {
462 ptr_frame_data[k]->sbr_mode = ORIG_SBR;
463 } else {
464 ptr_frame_data[k]->sbr_mode = PVC_SBR;
465 }
466 }
467
468 if (header_flag == SBR_RESET) {
469 err = ixheaacd_calc_frq_bnd_tbls(ptr_header_data[k],
470
471 self->pstr_common_tables);
472 if (err) {
473 return err;
474 }
475 }
476 }
477
478 {
479 WORD32 lr;
480 WORD32 lr1 = ps_enable ? 2 : num_channels;
481 for (lr = 0; lr < lr1; lr++) {
482 ptr_frame_data[lr]->reset_flag = 1;
483 if (ptr_header_data[k]->status) {
484 err |= ixheaacd_sbr_dec_reset(
485 &(pstr_sbr_channel[lr]->str_sbr_dec), ptr_header_data[k],
486 low_pow_flag, self->pstr_common_tables,
487 ptr_frame_data[k]->pitch_in_bins, audio_object_type);
488 if (err < 0) return err;
489 }
490 }
491 ptr_header_data[k]->status = 0;
492 }
493
494 if (err == 0) {
495 ptr_header_data[k]->sync_state = SBR_ACTIVE;
496 }
497 }
498 }
499
500 if (err || (ptr_header_data[k]->sync_state == SBR_NOT_INITIALIZED)) {
501 WORD32 lr1 = ps_enable ? 2 : num_channels;
502 ixheaacd_prepare_upsamp(ptr_header_data, pstr_sbr_channel, lr1);
503 }
504
505 if (frame_status && (ptr_header_data[k]->sync_state == SBR_ACTIVE)) {
506 if (stereo) {
507 frame_status = ixheaacd_sbr_read_cpe(ptr_header_data[0], ptr_frame_data,
508 it_bit_buff, self->pstr_sbr_tables,
509 audio_object_type);
510 } else {
511 if (ps_enable) {
512 if (down_mix_flag) {
513 self->pstr_ps_stereo_dec->force_mono = 1;
514 } else {
515 self->pstr_ps_stereo_dec->force_mono = 0;
516 }
517 } else {
518 self->pstr_ps_stereo_dec = 0;
519 }
520 if (ptr_frame_data[k]->sbr_mode == ORIG_SBR) {
521 frame_status = ixheaacd_sbr_read_sce(
522 ptr_header_data[k], ptr_frame_data[k], self->pstr_ps_stereo_dec,
523 it_bit_buff, self->pstr_sbr_tables, audio_object_type);
524 } else if (ptr_frame_data[k]->sbr_mode == PVC_SBR) {
525 frame_status = ixheaacd_sbr_read_pvc_sce(
526 ptr_frame_data[k], it_bit_buff, 0, self->ptr_pvc_data_str,
527 self->pstr_sbr_tables, ptr_header_data[k]);
528 if (frame_status < 0) return frame_status;
529 }
530 }
531 if (audio_object_type != AOT_ER_AAC_ELD) {
532 WORD32 total_bits_read;
533 total_bits_read = ixheaacd_no_bits_read(it_bit_buff);
534 if (total_bits_read > (ptr_bit_str_ele->size_payload << 3) ||
535 total_bits_read < ((ptr_bit_str_ele->size_payload << 3) - 8)) {
536 frame_status = 0;
537 }
538 }
539 }
540 }
541
542 if (!usac_flag) {
543 if (!frame_status || (ptr_header_data[0]->sync_state != SBR_ACTIVE) ||
544 ptr_header_data[0]->err_flag) {
545 ptr_header_data[0]->err_flag = 1;
546 stereo = (num_channels == 2) ? 1 : 0;
547 if (ptr_header_data[0]->channel_mode == 0) {
548 ptr_header_data[0]->channel_mode = stereo ? SBR_STEREO : SBR_MONO;
549 }
550 }
551
552 if (!(stereo || dual_mono)) {
553 ptr_frame_data[0]->coupling_mode = COUPLING_OFF;
554 ptr_frame_data[1]->coupling_mode = COUPLING_OFF;
555 }
556
557 if (ptr_header_data[0]->sync_state == SBR_NOT_INITIALIZED) {
558 WORD32 lr1 = ps_enable ? 2 : num_channels;
559 ixheaacd_prepare_upsamp(ptr_header_data, pstr_sbr_channel, lr1);
560 }
561 }
562
563 if (ptr_header_data[0]->sync_state == SBR_ACTIVE) {
564 if (ptr_frame_data[0]->sbr_mode == PVC_SBR) {
565 err = ixheaacd_dec_sbrdata_for_pvc(
566 ptr_header_data[0], ptr_frame_data[0],
567 pstr_sbr_channel[0]->pstr_prev_frame_data);
568 if (err) return err;
569 } else if (ptr_frame_data[0]->sbr_mode == ORIG_SBR) {
570 err = ixheaacd_dec_sbrdata(
571 ptr_header_data[0], ptr_header_data[1], ptr_frame_data[0],
572 pstr_sbr_channel[0]->pstr_prev_frame_data,
573 (stereo || dual_mono) ? ptr_frame_data[1] : NULL,
574 (stereo || dual_mono) ? pstr_sbr_channel[1]->pstr_prev_frame_data
575 : NULL,
576 self->pstr_common_tables);
577
578 if (err) return err;
579 }
580
581 if (ptr_header_data[0]->channel_mode == PS_STEREO &&
582 (audio_object_type != AOT_ER_AAC_ELD &&
583 audio_object_type != AOT_ER_AAC_LD)) {
584 ixheaacd_decode_ps_data(self->pstr_ps_stereo_dec);
585 ps_flag = 1;
586 self->ps_present = ps_flag;
587 }
588
589 ptr_frame_data[0]->max_qmf_subband_aac =
590 ptr_header_data[0]->pstr_freq_band_data->sub_band_start;
591 if (stereo) {
592 ptr_frame_data[1]->max_qmf_subband_aac =
593 ptr_header_data[1]->pstr_freq_band_data->sub_band_start;
594 }
595 }
596 if (audio_object_type != AOT_ER_AAC_ELD) {
597 if ((initial_sync_state == SBR_NOT_INITIALIZED) &&
598 ptr_header_data[0]->err_flag) {
599 ptr_header_data[0]->sync_state = SBR_NOT_INITIALIZED;
600 }
601 } else {
602 ptr_header_data[0]->sync_state = SBR_ACTIVE;
603 }
604
605 if ((num_channels == 2) && !(stereo || dual_mono)) {
606 ixheaacd_downmix_to_monosbr(&core_sample_buf[slot_element], ch_fac);
607 }
608
609 if ((!prev_stereo && !prev_ps_flag) && (ps_flag)) {
610 WORD32 copy_size;
611 if (down_samp_flag)
612 copy_size = QMF_FILTER_STATE_SYN_SIZE_DOWN_SAMPLED;
613 else
614 copy_size = QMF_FILTER_STATE_SYN_SIZE;
615
616 memcpy(
617 pstr_sbr_channel[1]->str_sbr_dec.str_synthesis_qmf_bank.filter_states,
618 pstr_sbr_channel[0]->str_sbr_dec.str_synthesis_qmf_bank.filter_states,
619 copy_size * sizeof(WORD16));
620
621 pstr_sbr_channel[1]->str_sbr_dec.str_sbr_scale_fact.st_syn_scale =
622 pstr_sbr_channel[0]->str_sbr_dec.str_sbr_scale_fact.st_syn_scale;
623 }
624
625 if ((!prev_stereo && stereo && (num_channels == 2)) &&
626 (audio_object_type != AOT_ER_AAC_ELD)) {
627 WORD32 copy_size;
628 if (down_samp_flag)
629 copy_size = QMF_FILTER_STATE_SYN_SIZE_DOWN_SAMPLED;
630 else
631 copy_size = QMF_FILTER_STATE_SYN_SIZE;
632
633 memcpy(
634 pstr_sbr_channel[1]->str_sbr_dec.str_synthesis_qmf_bank.filter_states,
635 pstr_sbr_channel[0]->str_sbr_dec.str_synthesis_qmf_bank.filter_states,
636 copy_size * sizeof(WORD16));
637
638 pstr_sbr_channel[1]->str_sbr_dec.str_sbr_scale_fact.st_syn_scale =
639 pstr_sbr_channel[0]->str_sbr_dec.str_sbr_scale_fact.st_syn_scale;
640
641 memcpy(
642 pstr_sbr_channel[1]->str_sbr_dec.str_codec_qmf_bank.anal_filter_states,
643 pstr_sbr_channel[0]->str_sbr_dec.str_codec_qmf_bank.anal_filter_states,
644 QMF_FILTER_STATE_ANA_SIZE * sizeof(WORD16));
645
646 pstr_sbr_channel[1]->str_sbr_dec.str_sbr_scale_fact.st_lb_scale =
647 pstr_sbr_channel[0]->str_sbr_dec.str_sbr_scale_fact.st_lb_scale;
648
649 memcpy(pstr_sbr_channel[1]->str_sbr_dec.ptr_sbr_overlap_buf,
650 pstr_sbr_channel[0]->str_sbr_dec.ptr_sbr_overlap_buf,
651 MAX_OV_COLS * NO_SYNTHESIS_CHANNELS * sizeof(WORD32));
652
653 pstr_sbr_channel[1]->str_sbr_dec.str_sbr_scale_fact.ov_lb_scale =
654 pstr_sbr_channel[0]->str_sbr_dec.str_sbr_scale_fact.ov_lb_scale;
655 pstr_sbr_channel[1]->str_sbr_dec.str_sbr_scale_fact.ov_hb_scale =
656 pstr_sbr_channel[0]->str_sbr_dec.str_sbr_scale_fact.ov_hb_scale;
657 }
658 pstr_sbr_channel[0]->str_sbr_dec.time_sample_buf = self->time_sample_buf[0];
659 if (pstr_drc_dec == NULL) {
660 WORD32 err_code = 0;
661 err_code = ixheaacd_sbr_dec(
662 &pstr_sbr_channel[0]->str_sbr_dec, core_sample_buf + slot_element,
663 ptr_header_data[0], ptr_frame_data[0],
664 pstr_sbr_channel[0]->pstr_prev_frame_data, self->pstr_ps_stereo_dec,
665 &pstr_sbr_channel[1]->str_sbr_dec.str_synthesis_qmf_bank,
666 &pstr_sbr_channel[1]->str_sbr_dec.str_sbr_scale_fact,
667 (ptr_header_data[0]->sync_state == SBR_ACTIVE), low_pow_flag,
668 sbr_scratch_struct->ptr_work_buf_core, self->pstr_sbr_tables,
669 self->pstr_common_tables, ch_fac, self->ptr_pvc_data_str, 0, NULL,
670 audio_object_type);
671 if (err_code) return err_code;
672 } else {
673 WORD32 err_code = 0;
674 err_code = ixheaacd_sbr_dec(
675 &pstr_sbr_channel[0]->str_sbr_dec, core_sample_buf + slot_element,
676 ptr_header_data[0], ptr_frame_data[0],
677 pstr_sbr_channel[0]->pstr_prev_frame_data, self->pstr_ps_stereo_dec,
678 &pstr_sbr_channel[1]->str_sbr_dec.str_synthesis_qmf_bank,
679 &pstr_sbr_channel[1]->str_sbr_dec.str_sbr_scale_fact,
680 (ptr_header_data[0]->sync_state == SBR_ACTIVE), low_pow_flag,
681 sbr_scratch_struct->ptr_work_buf_core, self->pstr_sbr_tables,
682 self->pstr_common_tables, ch_fac, self->ptr_pvc_data_str,
683 pstr_drc_dec->drc_on,
684 pstr_drc_dec->str_drc_channel_data[0].drc_factors_sbr,
685 audio_object_type);
686 if (err_code) return err_code;
687 }
688
689 if (!down_mix_flag && (stereo || dual_mono) && (num_channels == 2)) {
690 pstr_sbr_channel[1]->str_sbr_dec.time_sample_buf = self->time_sample_buf[1];
691
692 if (ele_channels == 1 && usac_flag) {
693 WORD32 err_code = ixheaacd_esbr_dec(
694 &pstr_sbr_channel[1]->str_sbr_dec, ptr_header_data[1],
695 ptr_frame_data[1], (ptr_header_data[1]->sync_state == SBR_ACTIVE),
696 low_pow_flag, self->pstr_sbr_tables, ch_fac);
697 if (err_code) return err_code;
698 } else {
699 if (pstr_drc_dec == NULL) {
700 WORD32 err_code = ixheaacd_sbr_dec(
701 &pstr_sbr_channel[1]->str_sbr_dec,
702 core_sample_buf + slot_element + 1, ptr_header_data[1],
703 ptr_frame_data[1], pstr_sbr_channel[1]->pstr_prev_frame_data, NULL,
704 NULL, NULL, (ptr_header_data[1]->sync_state == SBR_ACTIVE),
705 low_pow_flag, sbr_scratch_struct->ptr_work_buf_core,
706 self->pstr_sbr_tables, self->pstr_common_tables, ch_fac,
707 self->ptr_pvc_data_str, 0, NULL, audio_object_type);
708 if (err_code) return err_code;
709 } else {
710 WORD32 err_code = ixheaacd_sbr_dec(
711 &pstr_sbr_channel[1]->str_sbr_dec,
712 core_sample_buf + slot_element + 1, ptr_header_data[1],
713 ptr_frame_data[1], pstr_sbr_channel[1]->pstr_prev_frame_data, NULL,
714 NULL, NULL, (ptr_header_data[1]->sync_state == SBR_ACTIVE),
715 low_pow_flag, sbr_scratch_struct->ptr_work_buf_core,
716 self->pstr_sbr_tables, self->pstr_common_tables, ch_fac,
717 self->ptr_pvc_data_str, pstr_drc_dec->drc_on,
718 pstr_drc_dec->str_drc_channel_data[1].drc_factors_sbr,
719 audio_object_type);
720 if (err_code) return err_code;
721 }
722 }
723
724 } else {
725 if (audio_object_type != AOT_ER_AAC_ELD &&
726 audio_object_type != AOT_ER_AAC_LD)
727
728 {
729 if (sub_d((WORD16)ptr_header_data[0]->channel_mode, PS_STEREO) == 0) {
730 num_channels = 2;
731 }
732 }
733 }
734 *codec_num_channels = num_channels;
735 self->sbr_mode = ptr_frame_data[0]->sbr_mode;
736
737 if (pstr_drc_dec != NULL) {
738 WORD32 i, j;
739 for (i = 0; i < *codec_num_channels; i++) {
740 for (j = 0; j < 32; j++) {
741 memcpy(pstr_drc_dec->str_drc_channel_data[i].drc_factors_sbr[j],
742 pstr_drc_dec->str_drc_channel_data[i].drc_factors_sbr[j + 32],
743 64 * sizeof(WORD32));
744 }
745 }
746 }
747
748 return SBRDEC_OK;
749 }
750