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
30 #include <ixheaacd_basic_op.h>
31 #include "ixheaacd_intrinsics.h"
32 #include "ixheaacd_common_rom.h"
33 #include "ixheaacd_basic_funcs.h"
34 #include "ixheaacd_bitbuffer.h"
35 #include "ixheaacd_sbr_common.h"
36 #include "ixheaacd_drc_data_struct.h"
37 #include "ixheaacd_drc_dec.h"
38 #include "ixheaacd_sbrdecoder.h"
39 #include "ixheaacd_sbrdecsettings.h"
40 #include "ixheaacd_sbr_scale.h"
41 #include "ixheaacd_lpp_tran.h"
42 #include "ixheaacd_env_extr_part.h"
43 #include <ixheaacd_sbr_rom.h>
44 #include "ixheaacd_hybrid.h"
45 #include "ixheaacd_ps_dec.h"
46 #include "ixheaacd_env_extr.h"
47
48 #include <math.h>
49
50 #include "ixheaacd_sbr_const.h"
51 #include "ixheaacd_intrinsics.h"
52
53 #include "ixheaacd_pvc_dec.h"
54
55 #include "ixheaacd_ps_bitdec.h"
56
57 #include "ixheaacd_audioobjtypes.h"
58
ixheaacd_cnt_leading_ones(WORD32 a)59 WORD32 ixheaacd_cnt_leading_ones(WORD32 a) {
60 WORD32 count = 0;
61
62 while (a) {
63 if (a & 0x80000000)
64 count++;
65 else
66 break;
67 a = a << 1;
68 }
69 return count;
70 }
ixheaacd_huffman_decode(WORD32 it_bit_buff,WORD16 * h_index,WORD16 * len,const UWORD16 * input_table,const UWORD32 * idx_table)71 VOID ixheaacd_huffman_decode(WORD32 it_bit_buff, WORD16 *h_index, WORD16 *len,
72 const UWORD16 *input_table,
73 const UWORD32 *idx_table) {
74 UWORD32 temp = 0;
75 UWORD32 temp1 = 0;
76 WORD32 found = 0;
77 UWORD32 mask = 0x80000000;
78
79 WORD32 clo;
80 WORD32 MAX_LEN;
81 WORD32 ixheaacd_drc_offset = 0;
82 WORD32 length;
83 UWORD32 cwrd;
84 WORD32 len_end;
85
86 MAX_LEN = input_table[0];
87 mask = mask - (1 << (31 - MAX_LEN));
88 mask = mask << 1;
89 temp = (UWORD32)(it_bit_buff & mask);
90
91 len_end = input_table[0];
92 clo = ixheaacd_cnt_leading_ones(temp);
93 do {
94 ixheaacd_drc_offset = (idx_table[clo] >> 20) & 0xff;
95 length = input_table[ixheaacd_drc_offset + 1] & 0x1f;
96 cwrd = idx_table[clo] & 0xfffff;
97 temp1 = temp >> (32 - length);
98 if (temp1 <= cwrd) {
99 ixheaacd_drc_offset = ixheaacd_drc_offset - (cwrd - temp1);
100 found = 1;
101 } else {
102 len_end = len_end + ((idx_table[clo] >> 28) & 0xf);
103 clo = len_end;
104 }
105 } while (!found);
106 *h_index = input_table[ixheaacd_drc_offset + 1] >> 5;
107 *len = length;
108 }
109
ixheaacd_read_esbr_pvc_envelope(ia_pvc_data_struct * ptr_pvc_data,ia_bit_buf_struct * it_bit_buff,WORD32 indepFlag)110 static WORD32 ixheaacd_read_esbr_pvc_envelope(ia_pvc_data_struct *ptr_pvc_data,
111 ia_bit_buf_struct *it_bit_buff,
112 WORD32 indepFlag) {
113 WORD32 i, j, k;
114 WORD32 fixed_length = 0, num_grid_info = 0, grid_info;
115 UWORD8 div_mode, ns_mode;
116 UWORD16 pvc_id[PVC_NUM_TIME_SLOTS + 1];
117 UWORD8 num_length;
118 UWORD8 length;
119 UWORD8 reuse_pvc_id;
120 WORD32 sum_length = 0;
121 WORD32 length_bits = 4;
122 UWORD8 pvc_id_bits = PVC_ID_BITS;
123
124 div_mode = (UWORD8)ixheaacd_read_bits_buf(it_bit_buff, PVC_DIV_MODE_BITS);
125 ns_mode = (UWORD8)ixheaacd_read_bits_buf(it_bit_buff, PVC_NS_MODE_BITS);
126
127 if (ptr_pvc_data->pvc_mode == 3) {
128 pvc_id_bits = 0;
129 }
130
131 if (div_mode <= 3) {
132 num_length = div_mode;
133 if (indepFlag) {
134 reuse_pvc_id = 0;
135 } else {
136 reuse_pvc_id =
137 (UWORD8)ixheaacd_read_bits_buf(it_bit_buff, PVC_REUSE_PVC_ID_BITS);
138 }
139 if (reuse_pvc_id == 1) {
140 pvc_id[0] = ptr_pvc_data->prev_pvc_id;
141 } else {
142 pvc_id[0] = (UWORD16)ixheaacd_read_bits_buf(it_bit_buff, pvc_id_bits);
143 }
144
145 k = 1;
146 if (num_length) {
147 sum_length = 0;
148 for (i = 0; i < num_length; i++) {
149 if (sum_length >= 13) {
150 length_bits = 1;
151 } else if (sum_length >= 11) {
152 length_bits = 2;
153 } else if (sum_length >= 7) {
154 length_bits = 3;
155 } else {
156 length_bits = 4;
157 }
158 length = (UWORD8)ixheaacd_read_bits_buf(it_bit_buff, length_bits);
159 length += 1;
160 sum_length += length;
161 if ((k + length - 1) > PVC_NUM_TIME_SLOTS) {
162 return -1;
163 }
164 for (j = 1; j < length; j++, k++) {
165 pvc_id[k] = pvc_id[k - 1];
166 }
167 pvc_id[k++] = (UWORD16)ixheaacd_read_bits_buf(it_bit_buff, pvc_id_bits);
168 }
169 }
170
171 for (; k < 16; k++) {
172 pvc_id[k] = pvc_id[k - 1];
173 }
174
175 } else {
176 switch (div_mode) {
177 case 4:
178 num_grid_info = 2;
179 fixed_length = 8;
180 break;
181 case 5:
182 num_grid_info = 4;
183 fixed_length = 4;
184 break;
185 case 6:
186 num_grid_info = 8;
187 fixed_length = 2;
188 break;
189 case 7:
190 num_grid_info = 16;
191 fixed_length = 1;
192 break;
193 default:;
194 }
195 if (indepFlag) {
196 grid_info = 1;
197 } else {
198 grid_info = ixheaacd_read_bits_buf(it_bit_buff, PVC_GRID_INFO_BITS);
199 }
200 if (grid_info) {
201 pvc_id[0] = (UWORD16)ixheaacd_read_bits_buf(it_bit_buff, pvc_id_bits);
202 } else {
203 pvc_id[0] = ptr_pvc_data->prev_pvc_id;
204 }
205 for (j = 1, k = 1; j < fixed_length; j++, k++) {
206 pvc_id[k] = pvc_id[k - 1];
207 }
208
209 for (i = 1; i < num_grid_info; i++) {
210 grid_info = ixheaacd_read_bits_buf(it_bit_buff, PVC_GRID_INFO_BITS);
211 if (grid_info == 1) {
212 pvc_id[k++] = (UWORD16)ixheaacd_read_bits_buf(it_bit_buff, pvc_id_bits);
213 } else {
214 pvc_id[k] = pvc_id[k - 1];
215 k++;
216 }
217 for (j = 1; j < fixed_length; j++, k++) {
218 pvc_id[k] = pvc_id[k - 1];
219 }
220 }
221 }
222 ptr_pvc_data->div_mode = div_mode;
223 ptr_pvc_data->ns_mode = ns_mode;
224 for (i = 0; i < PVC_NUM_TIME_SLOTS; i++) {
225 ptr_pvc_data->pvc_id[i] = pvc_id[i];
226 }
227 return 0;
228 }
229
ixheaacd_pvc_env_dtdf_data(ia_sbr_frame_info_data_struct * ptr_frame_data,ia_bit_buf_struct * it_bit_buff)230 static VOID ixheaacd_pvc_env_dtdf_data(
231 ia_sbr_frame_info_data_struct *ptr_frame_data,
232 ia_bit_buf_struct *it_bit_buff) {
233 WORD32 i;
234 WORD32 usac_independency_flag = ptr_frame_data->usac_independency_flag;
235 WORD32 bs_num_noise = ptr_frame_data->str_frame_info_details.num_noise_env;
236
237 if (usac_independency_flag) {
238 ptr_frame_data->del_cod_dir_noise_arr[0] = 0;
239 } else {
240 ptr_frame_data->del_cod_dir_noise_arr[0] =
241 ixheaacd_read_bits_buf(it_bit_buff, ESBR_DOMAIN_BITS);
242 }
243
244 for (i = 1; i < bs_num_noise; i++) {
245 ptr_frame_data->del_cod_dir_noise_arr[i] =
246 ixheaacd_read_bits_buf(it_bit_buff, ESBR_DOMAIN_BITS);
247 }
248 }
249
ixheaacd_read_sbr_addi_data(ia_sbr_frame_info_data_struct * ptr_frame_data,ia_sbr_header_data_struct * ptr_header_data,ia_bit_buf_struct * it_bit_buff)250 static VOID ixheaacd_read_sbr_addi_data(
251 ia_sbr_frame_info_data_struct *ptr_frame_data,
252 ia_sbr_header_data_struct *ptr_header_data,
253 ia_bit_buf_struct *it_bit_buff) {
254 WORD32 i;
255
256 WORD32 flag = ixheaacd_read_bits_buf(it_bit_buff, 1);
257
258 ptr_frame_data->sin_start_for_cur_top =
259 ptr_frame_data->sin_start_for_next_top;
260 ptr_frame_data->sin_len_for_cur_top = ptr_frame_data->sin_len_for_next_top;
261 ptr_frame_data->sin_start_for_next_top = 0;
262 ptr_frame_data->sin_len_for_next_top = 0;
263
264 if (flag) {
265 for (i = 0; i < ptr_header_data->pstr_freq_band_data->num_sf_bands[HIGH];
266 i++) {
267 ptr_frame_data->add_harmonics[i] = ixheaacd_read_bits_buf(it_bit_buff, 1);
268 }
269 if (ptr_frame_data->pvc_mode != 0) {
270 ptr_frame_data->sine_position = ESC_SIN_POS;
271
272 ptr_frame_data->bs_sin_pos_present =
273 ixheaacd_read_bits_buf(it_bit_buff, 1);
274
275 if (ptr_frame_data->bs_sin_pos_present == 1) {
276 ptr_frame_data->sine_position = ixheaacd_read_bits_buf(it_bit_buff, 5);
277 }
278 if (ptr_frame_data->var_len > 0) {
279 if (ptr_frame_data->sine_position > 16) {
280 if (ptr_frame_data->sine_position == 31) {
281 ptr_frame_data->sin_start_for_next_top = 0;
282 ptr_frame_data->sin_len_for_next_top = ptr_frame_data->var_len;
283 } else {
284 if ((ptr_frame_data->var_len + 16) ==
285 ptr_frame_data->sine_position) {
286 ptr_frame_data->sin_start_for_next_top = 0;
287 ptr_frame_data->sin_len_for_next_top = ptr_frame_data->var_len;
288 } else {
289 ptr_frame_data->sin_start_for_next_top =
290 ptr_frame_data->sine_position - 16;
291 ptr_frame_data->sin_len_for_next_top = ptr_frame_data->var_len;
292 }
293 }
294 } else {
295 ptr_frame_data->sin_start_for_next_top = 0;
296 ptr_frame_data->sin_len_for_next_top = ptr_frame_data->var_len;
297 }
298 } else {
299 ptr_frame_data->sin_start_for_next_top = 0;
300 ptr_frame_data->sin_len_for_next_top = 0;
301 }
302 }
303 }
304 return;
305 }
306
ixheaacd_ssc_huff_dec(ia_huffman_data_type t_huff,ia_handle_bit_buf_struct it_bit_buff)307 WORD32 ixheaacd_ssc_huff_dec(ia_huffman_data_type t_huff,
308 ia_handle_bit_buf_struct it_bit_buff) {
309 WORD32 index;
310 WORD32 value, bit;
311 WORD16 cw;
312 index = 0;
313
314 while (index >= 0) {
315 cw = t_huff[index];
316
317 bit = ixheaacd_read_bits_buf(it_bit_buff, 1);
318
319 if (bit) {
320 WORD sign = (cw & 0x0080);
321 if (sign) {
322 index = (cw | 0xffffff80);
323 } else {
324 index = (cw & 0x007f);
325 }
326 } else {
327 index = (cw >> 8);
328 }
329 }
330
331 value = (index + 64);
332
333 return (value);
334 }
335
ixheaacd_sbr_read_header_data(ia_sbr_header_data_struct * pstr_sbr_header,ia_bit_buf_struct * it_bit_buff,FLAG stereo_flag,ia_sbr_header_data_struct * pstr_sbr_dflt_header)336 WORD32 ixheaacd_sbr_read_header_data(
337 ia_sbr_header_data_struct *pstr_sbr_header, ia_bit_buf_struct *it_bit_buff,
338 FLAG stereo_flag, ia_sbr_header_data_struct *pstr_sbr_dflt_header) {
339 ia_sbr_header_data_struct prev_header_info;
340 FLAG header_extra_1 = 0, header_extra_2 = 0;
341 WORD32 tmp;
342 WORD32 usac_independency_flag = pstr_sbr_header->usac_independency_flag;
343 WORD32 use_dflt_hdr = 0;
344 WORD32 header_present = 1;
345 WORD32 usac_flag = pstr_sbr_header->usac_flag;
346
347 if (!usac_flag) {
348 memcpy(&prev_header_info, pstr_sbr_header,
349 sizeof(ia_sbr_header_data_struct));
350
351 tmp = ixheaacd_read_bits_buf(
352 it_bit_buff, SBR_AMPLITUDE_RESOLUTION_BITS + SBR_BEGIN_SAMP_FREQ_BITS +
353 SBR_END_SAMP_FREQ_BITS + SBR_CROSS_OVER_BND_BITS);
354
355 pstr_sbr_header->amp_res = (WORD16)(
356 (tmp & 0x0800) >> (SBR_BEGIN_SAMP_FREQ_BITS + SBR_END_SAMP_FREQ_BITS +
357 SBR_CROSS_OVER_BND_BITS));
358
359 pstr_sbr_header->start_freq = (WORD16)(
360 (tmp & 0x0780) >> (SBR_END_SAMP_FREQ_BITS + SBR_CROSS_OVER_BND_BITS));
361
362 pstr_sbr_header->stop_freq =
363 (WORD16)((tmp & 0x078) >> (SBR_CROSS_OVER_BND_BITS));
364
365 pstr_sbr_header->xover_band = (WORD16)((tmp & 0x07));
366
367 tmp = ixheaacd_read_bits_buf(
368 it_bit_buff,
369 SBR_HDR_RESERV_BITS + SBR_HDR_EXTR_1_BITS + SBR_HDR_EXTR_2_BITS);
370 header_extra_1 = (FLAG)((tmp & 0x02) >> (SBR_HDR_EXTR_2_BITS));
371 header_extra_2 = (FLAG)((tmp & 0x01));
372 if (stereo_flag) {
373 pstr_sbr_header->channel_mode = SBR_STEREO;
374 } else {
375 pstr_sbr_header->channel_mode = SBR_MONO;
376 }
377 } else {
378 WORD32 info_present = 0;
379 if (pstr_sbr_header->sync_state == SBR_ACTIVE) {
380 memcpy(&prev_header_info, pstr_sbr_header,
381 sizeof(ia_sbr_header_data_struct));
382 }
383 if (usac_independency_flag) {
384 header_present = 1;
385 info_present = 1;
386 } else {
387 info_present = ixheaacd_read_bits_buf(it_bit_buff, 1);
388 if (info_present) {
389 header_present = ixheaacd_read_bits_buf(it_bit_buff, 1);
390 } else {
391 header_present = 0;
392 }
393 }
394
395 if (info_present) {
396 tmp = ixheaacd_read_bits_buf(it_bit_buff, SBR_AMPLITUDE_RESOLUTION_BITS +
397 ESBR_CROSS_OVER_BND_BITS +
398 ESBR_PRE_FLAT_BITS);
399 pstr_sbr_header->amp_res = (WORD16)(
400 (tmp & 0x0020) >> (ESBR_CROSS_OVER_BND_BITS + ESBR_PRE_FLAT_BITS));
401 pstr_sbr_header->xover_band =
402 (WORD16)((tmp & 0x001E) >> (ESBR_PRE_FLAT_BITS));
403 pstr_sbr_header->pre_proc_flag = (WORD16)((tmp & 0x001));
404 if (pstr_sbr_header->pvc_flag) {
405 pstr_sbr_header->pvc_mode =
406 ixheaacd_read_bits_buf(it_bit_buff, ESBR_PVC_MODE_BITS);
407 } else {
408 pstr_sbr_header->pvc_mode = 0;
409 }
410 }
411
412 if (header_present) {
413 use_dflt_hdr = ixheaacd_read_bits_buf(it_bit_buff, 1);
414 if (use_dflt_hdr) {
415 pstr_sbr_header->start_freq = pstr_sbr_dflt_header->start_freq;
416 pstr_sbr_header->stop_freq = pstr_sbr_dflt_header->stop_freq;
417 pstr_sbr_header->header_extra_1 = pstr_sbr_dflt_header->header_extra_1;
418 pstr_sbr_header->header_extra_2 = pstr_sbr_dflt_header->header_extra_2;
419 pstr_sbr_header->freq_scale = pstr_sbr_dflt_header->freq_scale;
420 pstr_sbr_header->alter_scale = pstr_sbr_dflt_header->alter_scale;
421 pstr_sbr_header->noise_bands = pstr_sbr_dflt_header->noise_bands;
422 pstr_sbr_header->limiter_bands = pstr_sbr_dflt_header->limiter_bands;
423 pstr_sbr_header->limiter_gains = pstr_sbr_dflt_header->limiter_gains;
424 pstr_sbr_header->interpol_freq = pstr_sbr_dflt_header->interpol_freq;
425 pstr_sbr_header->smoothing_mode = pstr_sbr_dflt_header->smoothing_mode;
426 } else {
427 tmp = ixheaacd_read_bits_buf(
428 it_bit_buff, SBR_BEGIN_SAMP_FREQ_BITS + SBR_END_SAMP_FREQ_BITS +
429 SBR_HDR_EXTR_1_BITS + SBR_HDR_EXTR_2_BITS);
430 pstr_sbr_header->start_freq =
431 (tmp & 0x03C0) >> (SBR_END_SAMP_FREQ_BITS + SBR_HDR_EXTR_1_BITS +
432 SBR_HDR_EXTR_2_BITS);
433 pstr_sbr_header->stop_freq =
434 (tmp & 0x003C) >> (SBR_HDR_EXTR_1_BITS + SBR_HDR_EXTR_2_BITS);
435 pstr_sbr_header->header_extra_1 =
436 (tmp & 0x0002) >> (SBR_HDR_EXTR_2_BITS);
437 pstr_sbr_header->header_extra_2 = (tmp & 0x0001);
438 header_extra_1 = pstr_sbr_header->header_extra_1;
439 header_extra_2 = pstr_sbr_header->header_extra_2;
440 }
441 }
442 }
443
444 if (!use_dflt_hdr && header_present) {
445 if (header_extra_1) {
446 tmp = ixheaacd_read_bits_buf(
447 it_bit_buff,
448 SBR_SAMP_FREQ_LVL_BITS + SBR_CHANGE_LVL_BITS + SBR_NOISE_BND_BITS);
449 pstr_sbr_header->freq_scale =
450 (WORD16)((tmp & 0x018) >> (SBR_CHANGE_LVL_BITS + SBR_NOISE_BND_BITS));
451 pstr_sbr_header->alter_scale =
452 (WORD16)((tmp & 0x04) >> (SBR_NOISE_BND_BITS));
453 pstr_sbr_header->noise_bands = (WORD16)((tmp & 0x03));
454 } else {
455 pstr_sbr_header->freq_scale = SBR_SAMP_FEQ_LVL_DEF;
456 pstr_sbr_header->alter_scale = SBR_CHANGE_LVL_DEF;
457 pstr_sbr_header->noise_bands = SBR_NOISE_BND_DEF;
458 }
459
460 if (header_extra_2) {
461 tmp = ixheaacd_read_bits_buf(
462 it_bit_buff, SBR_BND_LIMIT_BITS + SBR_GAIN_LIMIT_BITS +
463 SBR_INTERPOL_SAMP_FREQ_BITS + SBR_SMOOTH_LEN_BITS);
464 pstr_sbr_header->limiter_bands = (WORD16)(
465 (tmp & 0x030) >> (SBR_GAIN_LIMIT_BITS + SBR_INTERPOL_SAMP_FREQ_BITS +
466 SBR_SMOOTH_LEN_BITS));
467 pstr_sbr_header->limiter_gains = (WORD16)(
468 (tmp & 0x0c) >> (SBR_INTERPOL_SAMP_FREQ_BITS + SBR_SMOOTH_LEN_BITS));
469 pstr_sbr_header->interpol_freq =
470 (WORD16)((tmp & 0x02) >> (SBR_SMOOTH_LEN_BITS));
471 pstr_sbr_header->smoothing_mode = (WORD16)((tmp & 0x01));
472 } else {
473 pstr_sbr_header->limiter_bands = SBR_BND_LIMIT_DEF;
474 pstr_sbr_header->limiter_gains = SBR_GAIN_LIMIT_DEF;
475 pstr_sbr_header->interpol_freq = SBR_INTERPOL_SAMP_FEQ_DEF;
476 pstr_sbr_header->smoothing_mode = SBR_SMOOTH_LEN_DEF;
477 }
478 }
479
480 if ((pstr_sbr_header->sync_state != SBR_ACTIVE) ||
481 (prev_header_info.start_freq != pstr_sbr_header->start_freq) ||
482 (prev_header_info.stop_freq != pstr_sbr_header->stop_freq) ||
483 (prev_header_info.xover_band != pstr_sbr_header->xover_band) ||
484 (prev_header_info.freq_scale != pstr_sbr_header->freq_scale) ||
485 (prev_header_info.alter_scale != pstr_sbr_header->alter_scale) ||
486 (prev_header_info.noise_bands != pstr_sbr_header->noise_bands)) {
487 return SBR_RESET;
488 }
489
490 return 0;
491 }
492
ixheaacd_sbr_sin_coding_data(ia_sbr_header_data_struct * ptr_header_data,ia_sbr_frame_info_data_struct * ptr_frame_data,ia_bit_buf_struct * it_bit_buff)493 static VOID ixheaacd_sbr_sin_coding_data(
494 ia_sbr_header_data_struct *ptr_header_data,
495 ia_sbr_frame_info_data_struct *ptr_frame_data,
496 ia_bit_buf_struct *it_bit_buff) {
497 FLAG *p_add_harmonic = ptr_frame_data->add_harmonics;
498 WORD32 i;
499
500 i = ptr_header_data->pstr_freq_band_data->num_sf_bands[HIGH];
501 do {
502 *p_add_harmonic++ =
503 (FLAG)ixheaacd_read_bits_buf(it_bit_buff, SBR_ADD_SINE_FLAG_BITS);
504 i--;
505 } while (i != 0);
506
507 return;
508 }
509
ixheaacd_validate_frame_info(ia_frame_info_struct * pstr_frame_info,WORD16 num_time_slots,WORD audio_object_type)510 static WORD16 ixheaacd_validate_frame_info(
511 ia_frame_info_struct *pstr_frame_info, WORD16 num_time_slots,
512 WORD audio_object_type) {
513 WORD32 i, j;
514
515 WORD32 start_pos, end_pos, transient_env, start_pos_noise, end_pos_noise,
516 num_env_sf, num_noise_env;
517
518 num_env_sf = pstr_frame_info->num_env;
519 num_noise_env = pstr_frame_info->num_noise_env;
520
521 if ((num_env_sf < 1) || (num_env_sf > MAX_ENVELOPES)) return 0;
522
523 if (num_noise_env > MAX_NOISE_ENVELOPES) return 0;
524
525 start_pos = pstr_frame_info->border_vec[0];
526 end_pos = pstr_frame_info->border_vec[num_env_sf];
527 transient_env = pstr_frame_info->transient_env;
528
529 if (transient_env > num_env_sf) return 0;
530
531 start_pos_noise = pstr_frame_info->noise_border_vec[0];
532 end_pos_noise = pstr_frame_info->noise_border_vec[num_noise_env];
533
534 if ((start_pos < 0) || (start_pos >= end_pos)) return 0;
535
536 if (start_pos > SBR_OV_SLOTS) return 0;
537 if (audio_object_type != AOT_ER_AAC_ELD &&
538 audio_object_type != AOT_ER_AAC_LD) {
539 if (end_pos < SBR_TIME_SLOTS) return 0;
540 } else {
541 if (end_pos < num_time_slots) return 0;
542 }
543
544 if (end_pos > add_d(SBR_TIME_SLOTS, SBR_OV_SLOTS)) return 0;
545
546 for (i = 0; i < num_env_sf; i++) {
547 if (pstr_frame_info->border_vec[i] > pstr_frame_info->border_vec[i + 1])
548 return 0;
549 }
550
551 if ((num_env_sf == 1) && (num_noise_env > 1)) return 0;
552
553 if ((start_pos != start_pos_noise) || (end_pos != end_pos_noise)) return 0;
554
555 for (i = 0; i < num_noise_env; i++) {
556 start_pos_noise = pstr_frame_info->noise_border_vec[i];
557
558 for (j = 0; j < num_env_sf; j++) {
559 if (pstr_frame_info->border_vec[j] == start_pos_noise) break;
560 }
561 if (j == num_env_sf) return 0;
562 }
563
564 return 1;
565 }
566
ixheaacd_read_extn_data(ia_sbr_header_data_struct * ptr_header_data,ia_ps_dec_struct * ptr_ps_dec,ia_bit_buf_struct * it_bit_buff,ia_ps_tables_struct * ps_tables_ptr)567 static WORD16 ixheaacd_read_extn_data(
568 ia_sbr_header_data_struct *ptr_header_data, ia_ps_dec_struct *ptr_ps_dec,
569 ia_bit_buf_struct *it_bit_buff, ia_ps_tables_struct *ps_tables_ptr) {
570 WORD i;
571 WORD extended_data;
572 WORD no_bits_left;
573
574 extended_data = ixheaacd_read_bits_buf(it_bit_buff, SBR_ENLARGED_DATA_BITS);
575
576 if (extended_data) {
577 WORD cnt;
578 FLAG ps_read;
579
580 ps_read = 0;
581
582 cnt = ixheaacd_read_bits_buf(it_bit_buff, SBR_CONT_SIZE_BITS);
583
584 if (cnt == ((1 << SBR_CONT_SIZE_BITS) - 1)) {
585 cnt = (cnt + ixheaacd_read_bits_buf(it_bit_buff, SBR_CONT_ESC_CNT_BITS));
586 }
587
588 no_bits_left = (cnt << 3);
589
590 while (no_bits_left > 7) {
591 WORD extension_id = ixheaacd_read_bits_buf(it_bit_buff, SBR_CONT_ID_BITS);
592
593 no_bits_left = (no_bits_left - SBR_CONT_ID_BITS);
594
595 switch (extension_id) {
596 case EXTENSION_ID_PS_CODING:
597
598 if (ptr_ps_dec == NULL) {
599 return 0;
600 }
601
602 if (!(ptr_ps_dec->force_mono || ps_read)) {
603 no_bits_left =
604 (no_bits_left - ixheaacd_read_ps_data(ptr_ps_dec, it_bit_buff,
605 (WORD16)no_bits_left,
606 ps_tables_ptr));
607
608 if (no_bits_left < 0) return 0;
609
610 ptr_header_data->channel_mode = PS_STEREO;
611 ps_read = 1;
612 break;
613 }
614
615 default:
616 cnt = (no_bits_left >> 3);
617 for (i = cnt - 1; i >= 0; i--) ixheaacd_read_bits_buf(it_bit_buff, 8);
618 no_bits_left = (no_bits_left - (cnt << 3));
619 break;
620 }
621 }
622
623 if (no_bits_left < 0) return 0;
624
625 ixheaacd_read_bits_buf(it_bit_buff, no_bits_left);
626 }
627 return 1;
628 }
629
ixheaacd_sbr_read_pvc_sce(ia_sbr_frame_info_data_struct * ptr_frame_data,ia_bit_buf_struct * it_bit_buff,WORD32 hbe_flag,ia_pvc_data_struct * ptr_pvc_data,ia_sbr_tables_struct * ptr_sbr_tables,ia_sbr_header_data_struct * ptr_header_data)630 WORD32 ixheaacd_sbr_read_pvc_sce(ia_sbr_frame_info_data_struct *ptr_frame_data,
631 ia_bit_buf_struct *it_bit_buff,
632 WORD32 hbe_flag,
633 ia_pvc_data_struct *ptr_pvc_data,
634 ia_sbr_tables_struct *ptr_sbr_tables,
635 ia_sbr_header_data_struct *ptr_header_data) {
636 WORD32 i;
637 WORD32 err_code = 0;
638 ia_env_extr_tables_struct *env_extr_tables_ptr =
639 ptr_sbr_tables->env_extr_tables_ptr;
640 WORD32 usac_independency_flag = ptr_frame_data->usac_independency_flag;
641
642 if (hbe_flag) {
643 ptr_frame_data->sbr_patching_mode =
644 ixheaacd_read_bits_buf(it_bit_buff, ESBR_PATCHING_MODE_BITS);
645
646 if (ptr_frame_data->sbr_patching_mode == 0) {
647 ptr_frame_data->over_sampling_flag =
648 ixheaacd_read_bits_buf(it_bit_buff, ESBR_OVERSAMPLING_FLAG_BITS);
649 if (ixheaacd_read_bits_buf(it_bit_buff, ESBR_PITCHIN_FLAG_BITS))
650 ptr_frame_data->pitch_in_bins =
651 ixheaacd_read_bits_buf(it_bit_buff, ESBR_PITCHIN_BINS_BITS);
652 else
653 ptr_frame_data->pitch_in_bins = 0;
654 } else {
655 ptr_frame_data->over_sampling_flag = ptr_frame_data->pitch_in_bins = 0;
656 }
657 }
658
659 err_code = ixheaacd_pvc_time_freq_grid_info(it_bit_buff, ptr_frame_data);
660 if (err_code) return err_code;
661
662 ptr_pvc_data->prev_sbr_mode = PVC_SBR;
663
664 ixheaacd_pvc_env_dtdf_data(ptr_frame_data, it_bit_buff);
665
666 for (i = 0; i < ptr_header_data->pstr_freq_band_data->num_nf_bands; i++) {
667 ptr_frame_data->sbr_invf_mode_prev[i] = ptr_frame_data->sbr_invf_mode[i];
668 ptr_frame_data->sbr_invf_mode[i] =
669 (WORD32)ixheaacd_read_bits_buf(it_bit_buff, ESBR_INVF_MODE_BITS);
670 }
671
672 ptr_pvc_data->pvc_mode = ptr_header_data->pvc_mode;
673
674 ixheaacd_read_esbr_pvc_envelope(ptr_pvc_data, it_bit_buff,
675 usac_independency_flag);
676
677 ixheaacd_read_sbr_noise_floor_data(ptr_header_data, ptr_frame_data,
678 it_bit_buff, env_extr_tables_ptr);
679
680 memset(ptr_frame_data->add_harmonics, 0,
681 ptr_header_data->pstr_freq_band_data->num_sf_bands[HIGH] *
682 sizeof(WORD32));
683 ptr_frame_data->pvc_mode = ptr_header_data->pvc_mode;
684
685 ixheaacd_read_sbr_addi_data(ptr_frame_data, ptr_header_data, it_bit_buff);
686
687 ptr_frame_data->coupling_mode = COUPLING_OFF;
688
689 return 0;
690 }
691
ixheaacd_sbr_read_sce(ia_sbr_header_data_struct * ptr_header_data,ia_sbr_frame_info_data_struct * ptr_frame_data,ia_ps_dec_struct * ptr_ps_dec,ia_bit_buf_struct * it_bit_buff,ia_sbr_tables_struct * ptr_sbr_tables,WORD audio_object_type)692 WORD8 ixheaacd_sbr_read_sce(ia_sbr_header_data_struct *ptr_header_data,
693 ia_sbr_frame_info_data_struct *ptr_frame_data,
694 ia_ps_dec_struct *ptr_ps_dec,
695 ia_bit_buf_struct *it_bit_buff,
696 ia_sbr_tables_struct *ptr_sbr_tables,
697 WORD audio_object_type) {
698 WORD32 bit;
699 WORD32 i;
700 WORD32 hbe_flag = ptr_header_data->hbe_flag;
701 WORD32 num_if_bands = ptr_header_data->pstr_freq_band_data->num_if_bands;
702 WORD32 usac_flag = ptr_header_data->usac_flag;
703 ia_env_extr_tables_struct *env_extr_tables_ptr =
704 ptr_sbr_tables->env_extr_tables_ptr;
705
706 ptr_frame_data->coupling_mode = COUPLING_OFF;
707
708 if (!usac_flag) {
709 bit = ixheaacd_read_bits_buf(it_bit_buff, 1);
710
711 if (bit) ixheaacd_read_bits_buf(it_bit_buff, SBR_SCE_RESERV_BITS);
712 if (audio_object_type == AOT_ER_AAC_ELD ||
713 audio_object_type == AOT_ER_AAC_LD) {
714 if (ptr_frame_data->eld_sbr_flag == 1) {
715 if (!ixheaacd_extract_frame_info_ld(it_bit_buff, ptr_frame_data))
716 return 0;
717 }
718 } else {
719 if (!ixheaacd_sbr_time_freq_grid_info(it_bit_buff, ptr_frame_data,
720 env_extr_tables_ptr))
721
722 return 0;
723 }
724 if (!ixheaacd_validate_frame_info(&ptr_frame_data->str_frame_info_details,
725 ptr_header_data->num_time_slots,
726 audio_object_type))
727 return 0;
728
729 } else {
730 if (hbe_flag) {
731 ptr_frame_data->sbr_patching_mode =
732 ixheaacd_read_bits_buf(it_bit_buff, ESBR_PATCHING_MODE_BITS);
733 if (ptr_frame_data->sbr_patching_mode == 0) {
734 ptr_frame_data->over_sampling_flag =
735 ixheaacd_read_bits_buf(it_bit_buff, ESBR_OVERSAMPLING_FLAG_BITS);
736 if (ixheaacd_read_bits_buf(it_bit_buff, ESBR_PITCHIN_FLAG_BITS))
737 ptr_frame_data->pitch_in_bins =
738 ixheaacd_read_bits_buf(it_bit_buff, ESBR_PITCHIN_BINS_BITS);
739 else
740 ptr_frame_data->pitch_in_bins = 0;
741 } else {
742 ptr_frame_data->over_sampling_flag = ptr_frame_data->pitch_in_bins = 0;
743 }
744 }
745 ptr_frame_data->num_time_slots = ptr_header_data->num_time_slots;
746 if (!ixheaacd_sbr_time_freq_grid_info(it_bit_buff, ptr_frame_data,
747 env_extr_tables_ptr))
748 return 0;
749
750 if (!ixheaacd_validate_frame_info(&ptr_frame_data->str_frame_info_details,
751 ptr_header_data->num_time_slots,
752 audio_object_type))
753 return 0;
754
755 ptr_frame_data->prev_sbr_mode = ORIG_SBR;
756 }
757
758 ixheaacd_sbr_env_dtdf_data(ptr_frame_data, it_bit_buff,
759 ptr_header_data->usac_flag);
760
761 if (ptr_frame_data->del_cod_dir_arr[0] == DTDF_DIR_FREQ) {
762 ptr_header_data->err_flag = 0;
763 }
764
765 for (i = 0; i < num_if_bands; i++) {
766 ptr_frame_data->sbr_invf_mode_prev[i] = ptr_frame_data->sbr_invf_mode[i];
767 ptr_frame_data->sbr_invf_mode[i] =
768 (WORD32)ixheaacd_read_bits_buf(it_bit_buff, SBR_INVERSE_FILT_MODE_BITS);
769 }
770
771 if (!ixheaacd_read_sbr_env_data(ptr_header_data, ptr_frame_data, it_bit_buff,
772 env_extr_tables_ptr, audio_object_type))
773 return 0;
774
775 ixheaacd_read_sbr_noise_floor_data(ptr_header_data, ptr_frame_data,
776 it_bit_buff, env_extr_tables_ptr);
777
778 if (usac_flag) {
779 memset(
780 ptr_frame_data->add_harmonics, 0,
781 ptr_header_data->pstr_freq_band_data->num_sf_bands[1] * sizeof(WORD32));
782 ptr_frame_data->coupling_mode = COUPLING_OFF;
783 }
784
785 bit = (FLAG)ixheaacd_read_bits_buf(it_bit_buff, 1);
786 if (bit) {
787 ixheaacd_sbr_sin_coding_data(ptr_header_data, ptr_frame_data, it_bit_buff);
788 } else {
789 memset(ptr_frame_data->add_harmonics, 0, sizeof(FLAG) * MAX_FREQ_COEFFS);
790 }
791
792 if (!usac_flag) {
793 ixheaacd_read_extn_data(ptr_header_data, ptr_ps_dec, it_bit_buff,
794 ptr_sbr_tables->ps_tables_ptr);
795 }
796
797 return 1;
798 }
799
ixheaacd_sbr_read_cpe(ia_sbr_header_data_struct * ptr_header_data,ia_sbr_frame_info_data_struct ** ptr_frame_data,ia_bit_buf_struct * it_bit_buff,ia_sbr_tables_struct * ptr_sbr_tables,WORD audio_object_type)800 WORD8 ixheaacd_sbr_read_cpe(ia_sbr_header_data_struct *ptr_header_data,
801 ia_sbr_frame_info_data_struct **ptr_frame_data,
802 ia_bit_buf_struct *it_bit_buff,
803 ia_sbr_tables_struct *ptr_sbr_tables,
804 WORD audio_object_type) {
805 WORD32 i, k, bit, num_ch = 2;
806 WORD32 num_if_bands = ptr_header_data->pstr_freq_band_data->num_if_bands;
807 WORD32 hbe_flag = ptr_header_data->hbe_flag;
808 WORD32 usac_flag = ptr_header_data->usac_flag;
809
810 ia_env_extr_tables_struct *env_extr_tables_ptr =
811 ptr_sbr_tables->env_extr_tables_ptr;
812 bit = ixheaacd_read_bits_buf(it_bit_buff, 1);
813
814 if (usac_flag) {
815 if (bit) {
816 if (hbe_flag) {
817 ptr_frame_data[0]->sbr_patching_mode =
818 ptr_frame_data[1]->sbr_patching_mode =
819 ixheaacd_read_bits_buf(it_bit_buff, ESBR_PATCHING_MODE_BITS);
820 if (ptr_frame_data[0]->sbr_patching_mode == 0) {
821 ptr_frame_data[0]->over_sampling_flag =
822 ptr_frame_data[1]->over_sampling_flag = ixheaacd_read_bits_buf(
823 it_bit_buff, ESBR_OVERSAMPLING_FLAG_BITS);
824 if (ixheaacd_read_bits_buf(it_bit_buff, ESBR_PITCHIN_FLAG_BITS))
825 ptr_frame_data[0]->pitch_in_bins =
826 ptr_frame_data[1]->pitch_in_bins =
827 ixheaacd_read_bits_buf(it_bit_buff, ESBR_PITCHIN_BINS_BITS);
828 else
829 ptr_frame_data[0]->pitch_in_bins =
830 ptr_frame_data[1]->pitch_in_bins = 0;
831 } else {
832 ptr_frame_data[0]->over_sampling_flag = 0;
833 ptr_frame_data[1]->over_sampling_flag = 0;
834 ptr_frame_data[0]->pitch_in_bins = 0;
835 ptr_frame_data[1]->pitch_in_bins = 0;
836 }
837 }
838 ptr_frame_data[0]->coupling_mode = COUPLING_LEVEL;
839 ptr_frame_data[1]->coupling_mode = COUPLING_BAL;
840 } else {
841 if (hbe_flag) {
842 ptr_frame_data[0]->sbr_patching_mode =
843 ixheaacd_read_bits_buf(it_bit_buff, ESBR_PATCHING_MODE_BITS);
844 if (ptr_frame_data[0]->sbr_patching_mode == 0) {
845 ptr_frame_data[0]->over_sampling_flag =
846 ixheaacd_read_bits_buf(it_bit_buff, ESBR_OVERSAMPLING_FLAG_BITS);
847 if (ixheaacd_read_bits_buf(it_bit_buff, ESBR_PITCHIN_FLAG_BITS))
848 ptr_frame_data[0]->pitch_in_bins =
849 ixheaacd_read_bits_buf(it_bit_buff, ESBR_PITCHIN_BINS_BITS);
850 else
851 ptr_frame_data[0]->pitch_in_bins = 0;
852 } else {
853 ptr_frame_data[0]->over_sampling_flag = 0;
854 ptr_frame_data[0]->pitch_in_bins = 0;
855 }
856 ptr_frame_data[1]->sbr_patching_mode =
857 ixheaacd_read_bits_buf(it_bit_buff, ESBR_PATCHING_MODE_BITS);
858 if (ptr_frame_data[1]->sbr_patching_mode == 0) {
859 ptr_frame_data[1]->over_sampling_flag =
860 ixheaacd_read_bits_buf(it_bit_buff, ESBR_OVERSAMPLING_FLAG_BITS);
861 if (ixheaacd_read_bits_buf(it_bit_buff, ESBR_PITCHIN_FLAG_BITS))
862 ptr_frame_data[1]->pitch_in_bins =
863 ixheaacd_read_bits_buf(it_bit_buff, ESBR_PITCHIN_BINS_BITS);
864 else
865 ptr_frame_data[1]->pitch_in_bins = 0;
866 } else {
867 ptr_frame_data[1]->over_sampling_flag =
868 ptr_frame_data[1]->pitch_in_bins = 0;
869 }
870 }
871
872 ptr_frame_data[0]->coupling_mode = COUPLING_OFF;
873 ptr_frame_data[1]->coupling_mode = COUPLING_OFF;
874 }
875 } else {
876 if (bit) {
877 ixheaacd_read_bits_buf(it_bit_buff,
878 SBR_SCE_RESERV_BITS + SBR_SCE_RESERV_BITS);
879 }
880 if ((audio_object_type != AOT_ER_AAC_ELD) &&
881 (ptr_header_data->channel_mode != SBR_STEREO)) {
882 ptr_header_data->sync_state = UPSAMPLING;
883 return 0;
884 }
885
886 bit = ixheaacd_read_bits_buf(it_bit_buff, SBR_COUPLNG_MODE_BITS);
887
888 if (bit) {
889 ptr_frame_data[0]->coupling_mode = COUPLING_LEVEL;
890 ptr_frame_data[1]->coupling_mode = COUPLING_BAL;
891 } else {
892 ptr_frame_data[0]->coupling_mode = COUPLING_OFF;
893 ptr_frame_data[1]->coupling_mode = COUPLING_OFF;
894 }
895 }
896
897 for (i = 0; i < num_ch; i++) {
898 ptr_frame_data[i]->num_time_slots = ptr_header_data->num_time_slots;
899 if (audio_object_type == AOT_ER_AAC_ELD ||
900 audio_object_type == AOT_ER_AAC_LD) {
901 if (ptr_frame_data[i]->eld_sbr_flag == 1) {
902 if (!ixheaacd_extract_frame_info_ld(it_bit_buff, ptr_frame_data[i]))
903 return 0;
904 }
905 } else {
906 if (!ixheaacd_sbr_time_freq_grid_info(it_bit_buff, ptr_frame_data[i],
907 env_extr_tables_ptr))
908 return 0;
909 }
910
911 if (!ixheaacd_validate_frame_info(
912 &ptr_frame_data[i]->str_frame_info_details,
913 ptr_header_data->num_time_slots, audio_object_type))
914 return 0;
915
916 if (ptr_frame_data[0]->coupling_mode) {
917 memcpy(&ptr_frame_data[1]->str_frame_info_details,
918 &ptr_frame_data[0]->str_frame_info_details,
919 sizeof(ia_frame_info_struct));
920 if (audio_object_type == AOT_ER_AAC_ELD ||
921 audio_object_type == AOT_ER_AAC_LD) {
922 ptr_frame_data[1]->amp_res = ptr_frame_data[0]->amp_res;
923 }
924 num_ch = 1;
925 }
926 }
927
928 if (ptr_frame_data[0]->coupling_mode && usac_flag) {
929 ixheaacd_sbr_env_dtdf_data(ptr_frame_data[0], it_bit_buff,
930 ptr_header_data->usac_flag);
931 ixheaacd_sbr_env_dtdf_data(ptr_frame_data[1], it_bit_buff,
932 ptr_header_data->usac_flag);
933
934 for (i = 0; i < ptr_header_data->pstr_freq_band_data->num_if_bands; i++) {
935 ptr_frame_data[0]->sbr_invf_mode_prev[i] =
936 ptr_frame_data[0]->sbr_invf_mode[i];
937 ptr_frame_data[1]->sbr_invf_mode_prev[i] =
938 ptr_frame_data[1]->sbr_invf_mode[i];
939
940 ptr_frame_data[0]->sbr_invf_mode[i] =
941 (WORD32)ixheaacd_read_bits_buf(it_bit_buff, ESBR_INVF_MODE_BITS);
942 ptr_frame_data[1]->sbr_invf_mode[i] = ptr_frame_data[0]->sbr_invf_mode[i];
943 }
944
945 ixheaacd_read_sbr_env_data(ptr_header_data, ptr_frame_data[0], it_bit_buff,
946 env_extr_tables_ptr, audio_object_type);
947 ixheaacd_read_sbr_noise_floor_data(ptr_header_data, ptr_frame_data[0],
948 it_bit_buff, env_extr_tables_ptr);
949
950 ixheaacd_read_sbr_env_data(ptr_header_data, ptr_frame_data[1], it_bit_buff,
951 env_extr_tables_ptr, audio_object_type);
952 ixheaacd_read_sbr_noise_floor_data(ptr_header_data, ptr_frame_data[1],
953 it_bit_buff, env_extr_tables_ptr);
954
955 memset(
956 ptr_frame_data[0]->add_harmonics, 0,
957 ptr_header_data->pstr_freq_band_data->num_sf_bands[1] * sizeof(WORD32));
958 memset(
959 ptr_frame_data[1]->add_harmonics, 0,
960 ptr_header_data->pstr_freq_band_data->num_sf_bands[1] * sizeof(WORD32));
961
962 } else {
963 ixheaacd_sbr_env_dtdf_data(ptr_frame_data[0], it_bit_buff,
964 ptr_header_data->usac_flag);
965 ixheaacd_sbr_env_dtdf_data(ptr_frame_data[1], it_bit_buff,
966 ptr_header_data->usac_flag);
967
968 if ((ptr_frame_data[0]->del_cod_dir_arr[0] == DTDF_DIR_FREQ) &&
969 (ptr_frame_data[1]->del_cod_dir_arr[0] == DTDF_DIR_FREQ)) {
970 ptr_header_data->err_flag = 0;
971 }
972
973 for (k = 0; k < num_ch; k++) {
974 for (i = 0; i < num_if_bands; i++) {
975 ptr_frame_data[k]->sbr_invf_mode_prev[i] =
976 ptr_frame_data[k]->sbr_invf_mode[i];
977 ptr_frame_data[k]->sbr_invf_mode[i] = (WORD32)ixheaacd_read_bits_buf(
978 it_bit_buff, SBR_INVERSE_FILT_MODE_BITS);
979 }
980 }
981
982 if (ptr_frame_data[0]->coupling_mode) {
983 memcpy(ptr_frame_data[1]->sbr_invf_mode, ptr_frame_data[0]->sbr_invf_mode,
984 sizeof(WORD32) * num_if_bands);
985
986 if (!ixheaacd_read_sbr_env_data(ptr_header_data, ptr_frame_data[0],
987 it_bit_buff, env_extr_tables_ptr,
988 audio_object_type)) {
989 return 0;
990 }
991
992 ixheaacd_read_sbr_noise_floor_data(ptr_header_data, ptr_frame_data[0],
993 it_bit_buff, env_extr_tables_ptr);
994
995 if (!ixheaacd_read_sbr_env_data(ptr_header_data, ptr_frame_data[1],
996 it_bit_buff, env_extr_tables_ptr,
997 audio_object_type)) {
998 return 0;
999 }
1000 } else {
1001 if (!ixheaacd_read_sbr_env_data(ptr_header_data, ptr_frame_data[0],
1002 it_bit_buff, env_extr_tables_ptr,
1003 audio_object_type))
1004 return 0;
1005
1006 if (!ixheaacd_read_sbr_env_data(ptr_header_data, ptr_frame_data[1],
1007 it_bit_buff, env_extr_tables_ptr,
1008 audio_object_type))
1009 return 0;
1010
1011 ixheaacd_read_sbr_noise_floor_data(ptr_header_data, ptr_frame_data[0],
1012 it_bit_buff, env_extr_tables_ptr);
1013 }
1014 ixheaacd_read_sbr_noise_floor_data(ptr_header_data, ptr_frame_data[1],
1015 it_bit_buff, env_extr_tables_ptr);
1016 }
1017
1018 bit = (FLAG)ixheaacd_read_bits_buf(it_bit_buff, 1);
1019 if (bit) {
1020 ixheaacd_sbr_sin_coding_data(ptr_header_data, ptr_frame_data[0],
1021 it_bit_buff);
1022 } else {
1023 memset(ptr_frame_data[0]->add_harmonics, 0, sizeof(FLAG) * MAX_FREQ_COEFFS);
1024 }
1025
1026 bit = (FLAG)ixheaacd_read_bits_buf(it_bit_buff, 1);
1027 if (bit) {
1028 ixheaacd_sbr_sin_coding_data(ptr_header_data, ptr_frame_data[1],
1029 it_bit_buff);
1030 } else {
1031 memset(ptr_frame_data[1]->add_harmonics, 0, sizeof(FLAG) * MAX_FREQ_COEFFS);
1032 }
1033
1034 if (!usac_flag) {
1035 ixheaacd_read_extn_data(ptr_header_data, NULL, it_bit_buff,
1036 ptr_sbr_tables->ps_tables_ptr);
1037 }
1038 return 1;
1039 }
1040
ixheaacd_sbr_env_dtdf_data(ia_sbr_frame_info_data_struct * ptr_frame_data,ia_bit_buf_struct * it_bit_buff,WORD32 usac_flag)1041 VOID ixheaacd_sbr_env_dtdf_data(ia_sbr_frame_info_data_struct *ptr_frame_data,
1042 ia_bit_buf_struct *it_bit_buff,
1043 WORD32 usac_flag) {
1044 WORD32 i;
1045 WORD32 num_env = ptr_frame_data->str_frame_info_details.num_env;
1046 WORD32 num_noise_env = ptr_frame_data->str_frame_info_details.num_noise_env;
1047 WORD16 *p_coding_dir_vec = ptr_frame_data->del_cod_dir_arr;
1048 WORD16 *p_coding_dir_noise_vec = ptr_frame_data->del_cod_dir_noise_arr;
1049 WORD32 usac_independency_flag = ptr_frame_data->usac_independency_flag;
1050
1051 if (usac_flag) {
1052 if (usac_independency_flag) {
1053 *p_coding_dir_vec = 0;
1054 p_coding_dir_vec++;
1055 } else {
1056 *p_coding_dir_vec =
1057 (WORD16)ixheaacd_read_bits_buf(it_bit_buff, SBR_DEL_COD_DIR_BITS);
1058 p_coding_dir_vec++;
1059 }
1060 for (i = num_env - 1; i >= 1; i--) {
1061 *p_coding_dir_vec++ =
1062 (WORD16)ixheaacd_read_bits_buf(it_bit_buff, SBR_DEL_COD_DIR_BITS);
1063 }
1064 if (usac_independency_flag) {
1065 *p_coding_dir_noise_vec = 0;
1066 p_coding_dir_noise_vec++;
1067 } else {
1068 *p_coding_dir_noise_vec =
1069 (WORD16)ixheaacd_read_bits_buf(it_bit_buff, SBR_DEL_COD_DIR_BITS);
1070 p_coding_dir_noise_vec++;
1071 }
1072 for (i = num_noise_env - 1; i >= 1; i--) {
1073 *p_coding_dir_noise_vec++ =
1074 (WORD16)ixheaacd_read_bits_buf(it_bit_buff, SBR_DEL_COD_DIR_BITS);
1075 }
1076 } else {
1077 for (i = num_env - 1; i >= 0; i--) {
1078 *p_coding_dir_vec++ =
1079 (WORD16)ixheaacd_read_bits_buf(it_bit_buff, SBR_DEL_COD_DIR_BITS);
1080 }
1081
1082 for (i = num_noise_env - 1; i >= 0; i--) {
1083 *p_coding_dir_noise_vec++ =
1084 (WORD16)ixheaacd_read_bits_buf(it_bit_buff, SBR_DEL_COD_DIR_BITS);
1085 }
1086 }
1087 }
1088
ixheaacd_read_env_data(ia_sbr_frame_info_data_struct * ptr_frame_data,ia_bit_buf_struct * it_bit_buff,ia_huffman_data_type hcb_t,ia_huffman_data_type hcb_f,WORD32 * idx_t,WORD32 * idx_f,WORD16 * no_band,WORD32 num_env,WORD32 env_data_tbl_comp_factor,WORD32 start_bits,WORD32 start_bits_balance,WORD32 num_noise_env,WORD32 lav,WORD32 usac_flag)1089 VOID ixheaacd_read_env_data(ia_sbr_frame_info_data_struct *ptr_frame_data,
1090 ia_bit_buf_struct *it_bit_buff,
1091 ia_huffman_data_type hcb_t,
1092 ia_huffman_data_type hcb_f, WORD32 *idx_t,
1093 WORD32 *idx_f, WORD16 *no_band, WORD32 num_env,
1094 WORD32 env_data_tbl_comp_factor, WORD32 start_bits,
1095 WORD32 start_bits_balance, WORD32 num_noise_env,
1096 WORD32 lav, WORD32 usac_flag) {
1097 WORD32 j, i, ixheaacd_drc_offset = 0,
1098 coupling_mode = ptr_frame_data->coupling_mode, delta, bits,
1099 shift;
1100 WORD16 *p_coding_dir_vec, *p_sbr_sf;
1101 WORD16 index, length;
1102 WORD32 readword;
1103 FLOAT32 *p_sbr_sf_float;
1104
1105 if (num_noise_env) {
1106 p_coding_dir_vec = ptr_frame_data->del_cod_dir_noise_arr;
1107 p_sbr_sf = ptr_frame_data->int_noise_floor;
1108 p_sbr_sf_float = ptr_frame_data->flt_noise_floor;
1109 } else {
1110 p_coding_dir_vec = ptr_frame_data->del_cod_dir_arr;
1111 p_sbr_sf = ptr_frame_data->int_env_sf_arr;
1112 p_sbr_sf_float = ptr_frame_data->flt_env_sf_arr;
1113 }
1114
1115 if (coupling_mode == COUPLING_BAL) {
1116 bits = start_bits_balance;
1117 shift = env_data_tbl_comp_factor;
1118
1119 } else {
1120 bits = start_bits;
1121 shift = 0;
1122 }
1123
1124 for (j = 0; j < num_env; j++) {
1125 ia_huffman_data_type h;
1126 const WORD32 *idx_tab;
1127 WORD32 dtdf_dir_flag = p_coding_dir_vec[j];
1128
1129 if (dtdf_dir_flag == DTDF_DIR_FREQ) {
1130 p_sbr_sf[ixheaacd_drc_offset] =
1131 (WORD16)(ixheaacd_read_bits_buf(it_bit_buff, bits) << shift);
1132 p_sbr_sf_float[ixheaacd_drc_offset] = p_sbr_sf[ixheaacd_drc_offset];
1133 h = hcb_f;
1134 idx_tab = idx_f;
1135 } else {
1136 h = hcb_t;
1137 idx_tab = idx_t;
1138 }
1139
1140 for (i = (1 - dtdf_dir_flag); i < no_band[j]; i++) {
1141 if (it_bit_buff->cnt_bits < 20) {
1142 readword = ixheaacd_show_bits_buf(it_bit_buff, it_bit_buff->cnt_bits);
1143 readword = readword << (32 - it_bit_buff->cnt_bits);
1144 } else {
1145 readword = ixheaacd_show_bits_buf(it_bit_buff, 20);
1146 readword = readword << 12;
1147 }
1148 ixheaacd_huffman_decode(readword, &index, &length, (const UWORD16 *)h,
1149 (const UWORD32 *)idx_tab);
1150 delta = index - lav;
1151 ixheaacd_read_bits_buf(it_bit_buff, length);
1152 p_sbr_sf[ixheaacd_drc_offset + i] =
1153 (WORD16)(delta << env_data_tbl_comp_factor);
1154 p_sbr_sf_float[ixheaacd_drc_offset + i] =
1155 p_sbr_sf[ixheaacd_drc_offset + i];
1156 }
1157 if (usac_flag && (num_noise_env == 0)) {
1158 ptr_frame_data->inter_temp_shape_mode[j] = 0;
1159 if (ptr_frame_data->inter_tes_flag) {
1160 WORD32 flag = (WORD32)ixheaacd_read_bits_buf(it_bit_buff, 1);
1161 if (flag) {
1162 ptr_frame_data->inter_temp_shape_mode[j] =
1163 (WORD32)ixheaacd_read_bits_buf(it_bit_buff, 2);
1164 }
1165 }
1166 }
1167 ixheaacd_drc_offset += (no_band[j]);
1168 }
1169 }
1170
ixheaacd_read_sbr_noise_floor_data(ia_sbr_header_data_struct * ptr_header_data,ia_sbr_frame_info_data_struct * ptr_frame_data,ia_bit_buf_struct * it_bit_buff,ia_env_extr_tables_struct * env_extr_tables_ptr)1171 VOID ixheaacd_read_sbr_noise_floor_data(
1172 ia_sbr_header_data_struct *ptr_header_data,
1173 ia_sbr_frame_info_data_struct *ptr_frame_data,
1174 ia_bit_buf_struct *it_bit_buff,
1175 ia_env_extr_tables_struct *env_extr_tables_ptr) {
1176 WORD32 i;
1177 WORD32 coupling_mode;
1178 WORD16 num_noise_bands[MAX_NOISE_ENVELOPES];
1179 ia_huffman_data_type hcb_noise_env;
1180 ia_huffman_data_type hcb_noise;
1181 WORD32 *idx_noise_env;
1182 WORD32 *idx_noise;
1183 WORD32 lav;
1184 WORD32 env_data_tbl_comp_factor;
1185
1186 WORD32 start_bits;
1187 WORD32 start_bits_balance;
1188 WORD32 num_noise_env = ptr_frame_data->str_frame_info_details.num_noise_env;
1189
1190 for (i = 0; i < num_noise_env; i++)
1191 num_noise_bands[i] = ptr_header_data->pstr_freq_band_data->num_nf_bands;
1192
1193 start_bits = SBR_BEGIN_NOISE_BITS_AMPLITUDE_RESOLUTION_3_0;
1194 start_bits_balance = SBR_BEGIN_NOISE_BITS_BALNCE_AMPLITUDE_RESOLUTION_3_0;
1195
1196 coupling_mode = ptr_frame_data->coupling_mode;
1197
1198 if (coupling_mode == COUPLING_BAL) {
1199 lav = 12;
1200 hcb_noise = (ia_huffman_data_type)&env_extr_tables_ptr
1201 ->ixheaacd_t_huffman_noise_bal_3_0db_inp_table;
1202 idx_noise =
1203 env_extr_tables_ptr->ixheaacd_t_huffman_noise_bal_3_0db_idx_table;
1204 hcb_noise_env = (ia_huffman_data_type)&env_extr_tables_ptr
1205 ->ixheaacd_f_huffman_env_bal_3_0db_inp_table;
1206 idx_noise_env =
1207 env_extr_tables_ptr->ixheaacd_f_huffman_env_bal_3_0db_idx_table;
1208 env_data_tbl_comp_factor = 1;
1209 } else {
1210 lav = 31;
1211 hcb_noise = (ia_huffman_data_type)&env_extr_tables_ptr
1212 ->ixheaacd_t_huffman_noise_3_0db_inp_table;
1213 idx_noise = env_extr_tables_ptr->ixheaacd_t_huffman_noise_3_0db_idx_table;
1214 hcb_noise_env = (ia_huffman_data_type)&env_extr_tables_ptr
1215 ->ixheaacd_f_huffman_env_3_0db_inp_table;
1216 idx_noise_env = env_extr_tables_ptr->ixheaacd_f_huffman_env_3_0db_idx_table;
1217 env_data_tbl_comp_factor = 0;
1218 }
1219
1220 ixheaacd_read_env_data(ptr_frame_data, it_bit_buff, hcb_noise, hcb_noise_env,
1221 idx_noise, idx_noise_env, &num_noise_bands[0],
1222 num_noise_env, env_data_tbl_comp_factor, start_bits,
1223 start_bits_balance, 1, lav,
1224 ptr_header_data->usac_flag);
1225 }
1226
ixheaacd_read_sbr_env_data(ia_sbr_header_data_struct * ptr_header_data,ia_sbr_frame_info_data_struct * ptr_frame_data,ia_bit_buf_struct * it_bit_buff,ia_env_extr_tables_struct * env_extr_tables_ptr,WORD audio_object_type)1227 WORD16 ixheaacd_read_sbr_env_data(
1228 ia_sbr_header_data_struct *ptr_header_data,
1229 ia_sbr_frame_info_data_struct *ptr_frame_data,
1230 ia_bit_buf_struct *it_bit_buff,
1231 ia_env_extr_tables_struct *env_extr_tables_ptr, WORD audio_object_type) {
1232 WORD32 coupling_mode = ptr_frame_data->coupling_mode;
1233 WORD32 *idx_t, *idx_f;
1234 WORD32 lav;
1235 WORD32 i;
1236 WORD16 no_band[MAX_ENVELOPES];
1237 WORD32 delta;
1238 WORD32 amp_res, num_env, env_data_tbl_comp_factor, start_bits,
1239 start_bits_balance;
1240 WORD16 *p_freq_res = ptr_frame_data->str_frame_info_details.freq_res;
1241 WORD16 *p_num_sf_bands = ptr_header_data->pstr_freq_band_data->num_sf_bands;
1242 ia_huffman_data_type hcb_t, hcb_f;
1243
1244 delta = 0;
1245 amp_res = ptr_header_data->amp_res;
1246 num_env = ptr_frame_data->str_frame_info_details.num_env;
1247
1248 ptr_frame_data->num_env_sfac = 0;
1249
1250 if ((ptr_frame_data->str_frame_info_details.frame_class == FIXFIX) &&
1251 (num_env == 1)) {
1252 if (audio_object_type != AOT_ER_AAC_ELD &&
1253 audio_object_type != AOT_ER_AAC_LD) {
1254 amp_res = SBR_AMPLITUDE_RESOLUTION_1_5;
1255 } else {
1256 amp_res = ptr_frame_data->amp_res;
1257 }
1258 }
1259 ptr_frame_data->amp_res = amp_res;
1260
1261 if (amp_res == SBR_AMPLITUDE_RESOLUTION_3_0) {
1262 start_bits = SBR_BEGIN_ENVN_BITS_AMPLITUDE_RESOLUTION_3_0;
1263 start_bits_balance = SBR_BEGIN_ENVN_BITS_BALNCE_AMPLITUDE_RESOLUTION_3_0;
1264 } else {
1265 start_bits = SBR_BEGIN_ENVN_BITS_AMPLITUDE_RESOLUTION_1_5;
1266 start_bits_balance = SBR_BEGIN_ENVN_BITS_BALNCE_AMPLITUDE_RESOLUTION_1_5;
1267 }
1268
1269 for (i = 0; i < num_env; i++) {
1270 no_band[i] = p_num_sf_bands[*p_freq_res++];
1271 ptr_frame_data->num_env_sfac =
1272 ixheaacd_add16(ptr_frame_data->num_env_sfac, no_band[i]);
1273 }
1274
1275 if (ptr_frame_data->num_env_sfac > MAX_NUM_ENVELOPE_VALUES) return 0;
1276
1277 if (coupling_mode == COUPLING_BAL) {
1278 env_data_tbl_comp_factor = 1;
1279
1280 if (amp_res == SBR_AMPLITUDE_RESOLUTION_1_5) {
1281 lav = 24;
1282 hcb_t = (ia_huffman_data_type)&env_extr_tables_ptr
1283 ->ixheaacd_t_huffman_env_bal_1_5db_inp_table;
1284 idx_t = env_extr_tables_ptr->ixheaacd_t_huffman_env_bal_1_5db_idx_table;
1285 hcb_f = (ia_huffman_data_type)&env_extr_tables_ptr
1286 ->ixheaacd_f_huffman_env_bal_1_5db_inp_table;
1287 idx_f = env_extr_tables_ptr->ixheaacd_f_huffman_env_bal_1_5db_idx_table;
1288 } else {
1289 lav = 12;
1290 hcb_t = (ia_huffman_data_type)&env_extr_tables_ptr
1291 ->ixheaacd_t_huffman_env_bal_3_0db_inp_table;
1292 idx_t = env_extr_tables_ptr->ixheaacd_t_huffman_env_bal_3_0db_idx_table;
1293 hcb_f = (ia_huffman_data_type)&env_extr_tables_ptr
1294 ->ixheaacd_f_huffman_env_bal_3_0db_inp_table;
1295 idx_f = env_extr_tables_ptr->ixheaacd_f_huffman_env_bal_3_0db_idx_table;
1296 }
1297 } else {
1298 env_data_tbl_comp_factor = 0;
1299
1300 if (amp_res == SBR_AMPLITUDE_RESOLUTION_1_5) {
1301 lav = 60;
1302 hcb_t = (ia_huffman_data_type)&env_extr_tables_ptr
1303 ->ixheaacd_t_huffman_env_1_5db_inp_table;
1304 idx_t = env_extr_tables_ptr->ixheaacd_t_huffman_env_1_5db_idx_table;
1305 hcb_f = (ia_huffman_data_type)&env_extr_tables_ptr
1306 ->ixheaacd_f_huffman_env_1_5db_inp_table;
1307 idx_f = env_extr_tables_ptr->ixheaacd_f_huffman_env_1_5db_idx_table;
1308 } else {
1309 lav = 31;
1310 hcb_t = (ia_huffman_data_type)&env_extr_tables_ptr
1311 ->ixheaacd_t_huffman_env_3_0db_inp_table;
1312 idx_t = env_extr_tables_ptr->ixheaacd_t_huffman_env_3_0db_idx_table;
1313 hcb_f = (ia_huffman_data_type)&env_extr_tables_ptr
1314 ->ixheaacd_f_huffman_env_3_0db_inp_table;
1315 idx_f = env_extr_tables_ptr->ixheaacd_f_huffman_env_3_0db_idx_table;
1316 }
1317 }
1318
1319 ixheaacd_read_env_data(ptr_frame_data, it_bit_buff, hcb_t, hcb_f, idx_t,
1320 idx_f, &no_band[0], num_env, env_data_tbl_comp_factor,
1321 start_bits, start_bits_balance, 0, lav,
1322 ptr_header_data->usac_flag);
1323
1324 return 1;
1325 }
1326
ixheaacd_extract_frame_info_ld(ia_bit_buf_struct * it_bit_buff,ia_sbr_frame_info_data_struct * h_frame_data)1327 int ixheaacd_extract_frame_info_ld(
1328 ia_bit_buf_struct *it_bit_buff,
1329 ia_sbr_frame_info_data_struct *h_frame_data) {
1330 int abs_bord_lead = 0, num_rel_lead = 0, num_rel_trail = 0, bs_num_env = 0,
1331 frame_class, temp, env, k, abs_bord_trail = 0, middle_bord = 0,
1332 bs_num_noise, transient_env_temp = 0, bs_transient_position = 0;
1333
1334 WORD16 time_border[MAX_ENVELOPES + 1];
1335 WORD16 time_border_noise[2 + 1];
1336 WORD16 f[MAX_ENVELOPES + 1];
1337 int rel_bord_lead[7] = {0};
1338
1339 ia_frame_info_struct *v_frame_info = &h_frame_data->str_frame_info_details;
1340
1341 int numTimeSlots = h_frame_data->num_time_slots;
1342
1343 v_frame_info->frame_class = frame_class =
1344 ixheaacd_read_bits_buf(it_bit_buff, SBRLD_CLA_BITS);
1345
1346 switch (frame_class) {
1347 case FIXFIX:
1348 temp = ixheaacd_read_bits_buf(it_bit_buff, SBR_ENV_BITS);
1349 bs_num_env = 1 << temp;
1350
1351 if (bs_num_env == 1)
1352 h_frame_data->amp_res =
1353 ixheaacd_read_bits_buf(it_bit_buff, SBR_AMPLITUDE_RESOLUTION_BITS);
1354
1355 f[0] = ixheaacd_read_bits_buf(it_bit_buff, SBR_RES_BITS);
1356
1357 for (env = 1; env < bs_num_env; env++) f[env] = f[0];
1358 break;
1359 case LD_TRAN:
1360 bs_transient_position =
1361 ixheaacd_read_bits_buf(it_bit_buff, SBR_TRAN_BITS);
1362 v_frame_info->frame_class = 0;
1363 if ((numTimeSlots != 16) && (bs_transient_position >= LD_ENV_TBL_480)) {
1364 return -1;
1365 }
1366 bs_num_env = (numTimeSlots == 16)
1367 ? ixheaacd_ld_env_table_512[bs_transient_position]
1368 [SBR_ENVT_NUMENV]
1369 : ixheaacd_ld_env_table_480[bs_transient_position]
1370 [SBR_ENVT_NUMENV];
1371 for (env = 0; env < bs_num_env; env++)
1372 f[env] = ixheaacd_read_bits_buf(it_bit_buff, SBR_RES_BITS);
1373 break;
1374 }
1375
1376 switch (frame_class) {
1377 case FIXFIX:
1378 abs_bord_lead = 0;
1379 abs_bord_trail = numTimeSlots;
1380 num_rel_lead = bs_num_env - 1;
1381 num_rel_trail = 0;
1382
1383 for (k = 0; k < num_rel_lead; k++) {
1384 rel_bord_lead[k] = ixheaacd_ld_env_table_time_slot[num_rel_lead - 1];
1385 }
1386
1387 time_border[0] = abs_bord_lead;
1388 time_border[bs_num_env] = abs_bord_trail;
1389 for (env = 1; env <= num_rel_lead; env++) {
1390 time_border[env] = abs_bord_lead;
1391 for (k = 0; k <= env - 1; k++) time_border[env] += rel_bord_lead[k];
1392 }
1393 break;
1394
1395 case LD_TRAN:
1396 time_border[0] = 0;
1397 time_border[bs_num_env] = numTimeSlots;
1398 for (k = 1; k < bs_num_env; k++)
1399 time_border[k] =
1400 (numTimeSlots == 16)
1401 ? ixheaacd_ld_env_table_512[bs_transient_position][k]
1402 : ixheaacd_ld_env_table_480[bs_transient_position][k];
1403 break;
1404
1405 default:
1406 time_border[0] = 0;
1407
1408 break;
1409 };
1410
1411 switch (frame_class) {
1412 case FIXFIX:
1413 middle_bord = bs_num_env / 2;
1414 break;
1415 case LD_TRAN:
1416 middle_bord = 1;
1417 break;
1418 };
1419
1420 time_border_noise[0] = time_border[0];
1421 if (bs_num_env > 1) {
1422 time_border_noise[1] = time_border[middle_bord];
1423 time_border_noise[2] = time_border[bs_num_env];
1424 bs_num_noise = 2;
1425 } else {
1426 time_border_noise[1] = time_border[bs_num_env];
1427 bs_num_noise = 1;
1428 }
1429
1430 switch (frame_class) {
1431 case FIXFIX:
1432 transient_env_temp = -1;
1433 break;
1434 case LD_TRAN:
1435 transient_env_temp =
1436 (numTimeSlots == 16)
1437 ? ixheaacd_ld_env_table_512[bs_transient_position]
1438 [SBR_ENVT_TRANIDX]
1439 : ixheaacd_ld_env_table_480[bs_transient_position]
1440 [SBR_ENVT_TRANIDX];
1441 break;
1442 };
1443
1444 v_frame_info->num_env = bs_num_env;
1445 memcpy(v_frame_info->border_vec, time_border,
1446 (bs_num_env + 1) * sizeof(WORD16));
1447 memcpy(v_frame_info->freq_res, f, bs_num_env * sizeof(WORD16));
1448 v_frame_info->transient_env = transient_env_temp;
1449 v_frame_info->num_noise_env = bs_num_noise;
1450 memcpy(v_frame_info->noise_border_vec, time_border_noise,
1451 (bs_num_noise + 1) * sizeof(WORD16));
1452
1453 return 1;
1454 }
1455
ixheaacd_pvc_time_freq_grid_info(ia_bit_buf_struct * it_bit_buff,ia_sbr_frame_info_data_struct * ptr_frame_data)1456 WORD32 ixheaacd_pvc_time_freq_grid_info(
1457 ia_bit_buf_struct *it_bit_buff,
1458 ia_sbr_frame_info_data_struct *ptr_frame_data) {
1459 WORD32 bs_num_env = 0, bs_num_noise = 0;
1460 WORD32 time_border[MAX_ENVELOPES + 1];
1461 WORD32 time_border_noise[2 + 1];
1462 WORD32 pvc_time_border[MAX_ENVELOPES + 1];
1463 WORD32 pvc_time_border_noise[2 + 1];
1464 WORD32 bs_freq_res[MAX_ENVELOPES + 1];
1465 WORD32 var_len;
1466 ia_frame_info_struct *p_frame_info = &ptr_frame_data->str_frame_info_details;
1467 ia_frame_info_struct *pvc_frame_info = &ptr_frame_data->str_pvc_frame_info;
1468 WORD32 i;
1469 WORD32 prev_sbr_mode = ptr_frame_data->prev_sbr_mode;
1470
1471 WORD32 tmp;
1472 WORD32 bs_noise_pos;
1473 bs_noise_pos = ixheaacd_read_bits_buf(it_bit_buff, 4);
1474
1475 tmp = ixheaacd_read_bits_buf(it_bit_buff, 1);
1476 if (tmp == 0) {
1477 ptr_frame_data->var_len = 0;
1478 } else {
1479 tmp = ixheaacd_read_bits_buf(it_bit_buff, 2);
1480 ptr_frame_data->var_len = tmp + 1;
1481 }
1482 var_len = ptr_frame_data->var_len;
1483
1484 if (p_frame_info->num_env > 0) {
1485 time_border[0] = p_frame_info->border_vec[p_frame_info->num_env] - 16;
1486 } else {
1487 time_border[0] = 0;
1488 }
1489 if (time_border[0] < 0) return -1;
1490 pvc_time_border[0] = 0;
1491 bs_freq_res[0] = 0;
1492
1493 if (bs_noise_pos == 0) {
1494 time_border[1] = 16 + var_len;
1495 pvc_time_border[1] = 16;
1496 bs_num_noise = 1;
1497 bs_num_env = 1;
1498 } else {
1499 time_border[1] = bs_noise_pos;
1500 pvc_time_border[1] = bs_noise_pos;
1501 time_border[2] = 16 + var_len;
1502 pvc_time_border[2] = 16;
1503 bs_freq_res[1] = 0;
1504 bs_num_noise = 2;
1505 bs_num_env = 2;
1506 }
1507
1508 for (i = 0; i < 3; i++) {
1509 time_border_noise[i] = time_border[i];
1510 pvc_time_border_noise[i] = pvc_time_border[i];
1511 }
1512
1513 if (prev_sbr_mode == ORIG_SBR) {
1514 pvc_time_border[0] = time_border[0];
1515 pvc_time_border_noise[0] = time_border[0];
1516 }
1517
1518 pvc_frame_info->num_env = bs_num_env;
1519 for (i = 0; i < (bs_num_env + 1); i++) {
1520 pvc_frame_info->border_vec[i] = pvc_time_border[i];
1521 }
1522 for (i = 0; i < (bs_num_env); i++) {
1523 pvc_frame_info->freq_res[i] = bs_freq_res[i];
1524 }
1525 pvc_frame_info->transient_env = -1;
1526 pvc_frame_info->num_noise_env = bs_num_noise;
1527 for (i = 0; i < (bs_num_noise + 1); i++) {
1528 pvc_frame_info->noise_border_vec[i] = pvc_time_border_noise[i];
1529 }
1530 p_frame_info->num_env = bs_num_env;
1531 for (i = 0; i < (bs_num_env + 1); i++) {
1532 p_frame_info->border_vec[i] = time_border[i];
1533 }
1534 for (i = 0; i < (bs_num_env); i++) {
1535 p_frame_info->freq_res[i] = bs_freq_res[i];
1536 }
1537 p_frame_info->transient_env = -1;
1538 p_frame_info->num_noise_env = bs_num_noise;
1539 for (i = 0; i < (bs_num_noise + 1); i++) {
1540 p_frame_info->noise_border_vec[i] = time_border_noise[i];
1541 }
1542 return 0;
1543 }
1544
ixheaacd_sbr_time_freq_grid_info(ia_bit_buf_struct * it_bit_buff,ia_sbr_frame_info_data_struct * ptr_frame_data,ia_env_extr_tables_struct * env_extr_tables_ptr)1545 WORD16 ixheaacd_sbr_time_freq_grid_info(
1546 ia_bit_buf_struct *it_bit_buff,
1547 ia_sbr_frame_info_data_struct *ptr_frame_data,
1548 ia_env_extr_tables_struct *env_extr_tables_ptr) {
1549 WORD32 i, k, bs_num_rel = 0;
1550 WORD32 bs_pointer_bits = 0, bs_num_env = 0, border, bs_pointer,
1551 bs_var_bord = 0, temp = 0;
1552 WORD32 freq_res_0 = 0, frame_class;
1553 WORD32 abs_bord_lead, abs_bord_trail, num_rel_trail, num_rel_lead;
1554 WORD32 pointer_bits_array[7] = {1, 2, 2, 3, 3, 3, 3};
1555 ia_frame_info_struct *p_fixfix_tab;
1556 ia_frame_info_struct *p_frame_info = &ptr_frame_data->str_frame_info_details;
1557
1558 frame_class = ixheaacd_read_bits_buf(it_bit_buff, SBR_FRAME_CLASS_BITS);
1559 p_frame_info->frame_class = frame_class;
1560
1561 switch (frame_class) {
1562 case FIXFIX:
1563 temp =
1564 ixheaacd_read_bits_buf(it_bit_buff, SBR_ENV_BITS + SBR_FRQ_RES_BITS);
1565 bs_num_env = (temp & 0x6) >> SBR_FRQ_RES_BITS;
1566 p_fixfix_tab = &env_extr_tables_ptr->sbr_frame_info1_2_4_16[bs_num_env];
1567 memcpy(p_frame_info, p_fixfix_tab, sizeof(ia_frame_info_struct));
1568 bs_num_env = (1 << bs_num_env);
1569 freq_res_0 = temp & 0x1;
1570
1571 if (!freq_res_0) {
1572 memset(&p_frame_info->freq_res[0], 0, sizeof(WORD16) * bs_num_env);
1573 }
1574 break;
1575 case FIXVAR:
1576 bs_var_bord =
1577 ixheaacd_read_bits_buf(it_bit_buff, SBR_VAR_BORD_BITS + SBR_NUM_BITS);
1578 bs_num_rel = bs_var_bord & 3;
1579 bs_var_bord = bs_var_bord >> SBR_NUM_BITS;
1580 bs_num_env = bs_num_rel + 1;
1581 p_frame_info->border_vec[0] = 0;
1582 border = bs_var_bord + SBR_TIME_SLOTS;
1583 p_frame_info->border_vec[bs_num_env] = border;
1584 for (k = bs_num_rel; k > 0; k--) {
1585 temp = ixheaacd_read_bits_buf(it_bit_buff, SBR_REL_BITS);
1586 border = border - ((temp << 1) + 2);
1587 if (border < 0) border = 0;
1588 p_frame_info->border_vec[k] = border;
1589 }
1590
1591 bs_pointer_bits = pointer_bits_array[bs_num_rel];
1592 bs_pointer = ixheaacd_read_bits_buf(it_bit_buff, bs_pointer_bits);
1593
1594 if ((bs_pointer - (bs_num_rel + 1)) > 0) return 0;
1595
1596 for (k = bs_num_rel; k >= 0; k--) {
1597 p_frame_info->freq_res[k] =
1598 ixheaacd_read_bits_buf(it_bit_buff, SBR_FRQ_RES_BITS);
1599 }
1600 if (bs_pointer) {
1601 p_frame_info->transient_env = bs_num_env + 1 - bs_pointer;
1602 } else {
1603 p_frame_info->transient_env = -1;
1604 }
1605 if ((bs_pointer == 0) || (bs_pointer == 1))
1606 p_frame_info->noise_border_vec[1] =
1607 p_frame_info->border_vec[bs_num_rel];
1608 else
1609 p_frame_info->noise_border_vec[1] =
1610 p_frame_info->border_vec[p_frame_info->transient_env];
1611
1612 break;
1613
1614 case VARFIX:
1615 bs_var_bord =
1616 ixheaacd_read_bits_buf(it_bit_buff, SBR_VAR_BORD_BITS + SBR_NUM_BITS);
1617 bs_num_rel = bs_var_bord & 3;
1618 bs_var_bord = bs_var_bord >> SBR_NUM_BITS;
1619 bs_num_env = bs_num_rel + 1;
1620
1621 border = bs_var_bord;
1622 p_frame_info->border_vec[0] = border;
1623 for (k = 1; k <= bs_num_rel; k++) {
1624 temp = ixheaacd_read_bits_buf(it_bit_buff, SBR_REL_BITS);
1625 border = border + ((temp << 1) + 2);
1626 if (border > SBR_TIME_SLOTS) border = SBR_TIME_SLOTS;
1627 p_frame_info->border_vec[k] = border;
1628 }
1629 p_frame_info->border_vec[k] = SBR_TIME_SLOTS;
1630
1631 bs_pointer_bits = pointer_bits_array[bs_num_rel];
1632
1633 bs_pointer = ixheaacd_read_bits_buf(it_bit_buff, bs_pointer_bits);
1634
1635 if ((bs_pointer - (bs_num_rel + 1)) > 0) return 0;
1636
1637 if (bs_pointer == 0 || (bs_pointer - 1) == 0) {
1638 p_frame_info->transient_env = -1;
1639 } else {
1640 p_frame_info->transient_env = bs_pointer - 1;
1641 }
1642
1643 for (k = 0; k <= bs_num_rel; k++) {
1644 p_frame_info->freq_res[k] =
1645 ixheaacd_read_bits_buf(it_bit_buff, SBR_FRQ_RES_BITS);
1646 }
1647
1648 switch (bs_pointer) {
1649 case 0:
1650 p_frame_info->noise_border_vec[1] = p_frame_info->border_vec[1];
1651 break;
1652 case 1:
1653 p_frame_info->noise_border_vec[1] =
1654 p_frame_info->border_vec[bs_num_rel];
1655 break;
1656 default:
1657 p_frame_info->noise_border_vec[1] =
1658 p_frame_info->border_vec[(WORD32)p_frame_info->transient_env];
1659 break;
1660 }
1661
1662 break;
1663
1664 case VARVAR:
1665 abs_bord_lead = ixheaacd_read_bits_buf(
1666 it_bit_buff, 2 * SBR_VAR_BORD_BITS + 2 * SBR_NUM_BITS);
1667 abs_bord_trail =
1668 (((abs_bord_lead & 0x30) >> (2 * SBR_NUM_BITS)) + SBR_TIME_SLOTS);
1669 num_rel_trail = ((abs_bord_lead & 0xc) >> SBR_NUM_BITS);
1670 num_rel_lead = (abs_bord_lead & 0x3);
1671 abs_bord_lead = abs_bord_lead >> (SBR_VAR_BORD_BITS + 2 * SBR_NUM_BITS);
1672 bs_num_env = ((num_rel_trail + num_rel_lead) + 1);
1673 border = abs_bord_lead;
1674 p_frame_info->border_vec[0] = border;
1675
1676 for (k = 1; k <= num_rel_trail; k++) {
1677 temp = ixheaacd_read_bits_buf(it_bit_buff, SBR_REL_BITS);
1678 border = border + ((temp << 1) + 2);
1679 p_frame_info->border_vec[k] = border;
1680 }
1681
1682 border = abs_bord_trail;
1683 i = bs_num_env;
1684
1685 p_frame_info->border_vec[i] = border;
1686
1687 for (k = 0; k < num_rel_lead; k++) {
1688 temp = ixheaacd_read_bits_buf(it_bit_buff, SBR_REL_BITS);
1689 border = border - ((temp << 1) + 2);
1690 i--;
1691 p_frame_info->border_vec[i] = border;
1692 }
1693 bs_pointer_bits = pointer_bits_array[num_rel_trail + num_rel_lead];
1694
1695 bs_pointer = ixheaacd_read_bits_buf(it_bit_buff, bs_pointer_bits);
1696 if ((bs_pointer - ((num_rel_trail + num_rel_lead) + 1)) > 0) return 0;
1697
1698 if (bs_pointer) {
1699 p_frame_info->transient_env = bs_num_env + 1 - bs_pointer;
1700 } else {
1701 p_frame_info->transient_env = -1;
1702 }
1703
1704 for (k = 0; k < bs_num_env; k++) {
1705 p_frame_info->freq_res[k] =
1706 ixheaacd_read_bits_buf(it_bit_buff, SBR_FRQ_RES_BITS);
1707 }
1708 p_frame_info->noise_border_vec[0] = abs_bord_lead;
1709 if (bs_num_env == 1) {
1710 p_frame_info->noise_border_vec[1] = abs_bord_trail;
1711 } else {
1712 if (bs_pointer == 0 || (bs_pointer - 1) == 0)
1713 p_frame_info->noise_border_vec[1] =
1714 p_frame_info->border_vec[bs_num_env - 1];
1715 else
1716 p_frame_info->noise_border_vec[1] =
1717 p_frame_info->border_vec[(WORD32)p_frame_info->transient_env];
1718
1719 p_frame_info->noise_border_vec[2] = abs_bord_trail;
1720 }
1721 break;
1722 }
1723 p_frame_info->num_env = bs_num_env;
1724
1725 if (bs_num_env == 1)
1726 p_frame_info->num_noise_env = 1;
1727 else
1728 p_frame_info->num_noise_env = 2;
1729
1730 if (frame_class == VARFIX || frame_class == FIXVAR) {
1731 p_frame_info->noise_border_vec[0] = p_frame_info->border_vec[0];
1732 p_frame_info->noise_border_vec[p_frame_info->num_noise_env] =
1733 p_frame_info->border_vec[bs_num_env];
1734 }
1735 return 1;
1736 }
1737