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
22 #include "ixheaacd_type_def.h"
23 #include "ixheaacd_sbr_common.h"
24
25 #include "ixheaacd_constants.h"
26 #include "ixheaacd_basic_ops32.h"
27 #include "ixheaacd_basic_ops16.h"
28 #include "ixheaacd_basic_ops40.h"
29 #include "ixheaacd_basic_ops.h"
30
31 #include "ixheaacd_bitbuffer.h"
32
33 #include "ixheaacd_audioobjtypes.h"
34 #include "ixheaacd_sbrdecsettings.h"
35 #include "ixheaacd_memory_standards.h"
36 #include "ixheaacd_error_codes.h"
37
38 #include "ixheaacd_defines.h"
39 #include "ixheaacd_aac_rom.h"
40 #include "ixheaacd_pns.h"
41
42 #include "ixheaacd_pulsedata.h"
43 #include "ixheaacd_drc_data_struct.h"
44
45 #include "ixheaacd_lt_predict.h"
46 #include "ixheaacd_channelinfo.h"
47 #include "ixheaacd_drc_dec.h"
48
49 #include "ixheaacd_sbrdecoder.h"
50 #include "ixheaacd_sbr_scale.h"
51 #include "ixheaacd_lpp_tran.h"
52 #include "ixheaacd_env_extr_part.h"
53 #include "ixheaacd_sbr_rom.h"
54
55 #include "ixheaacd_hybrid.h"
56 #include "ixheaacd_ps_dec.h"
57 #include "ixheaacd_ps_bitdec.h"
58
59 #include "ixheaacd_pulsedata.h"
60
61 #include "ixheaacd_pns.h"
62
63 #include "ixheaacd_env_extr.h"
64 #include "ixheaacd_common_rom.h"
65 #include "ixheaacd_block.h"
66 #include "ixheaacd_channel.h"
67 #include "ixheaacd_audioobjtypes.h"
68 #include "ixheaacd_latmdemux.h"
69 #include "ixheaacd_aacdec.h"
70 #include "ixheaacd_config.h"
71 #include "ixheaacd_mps_polyphase.h"
72 #include "ixheaacd_mps_dec.h"
73 #include "ixheaacd_struct_def.h"
74 #include "ixheaacd_headerdecode.h"
75
76 #include "ixheaacd_multichannel.h"
77 #include "ixheaacd_basic_op.h"
78
cblock_decode_huff_symbol(UWORD8 * ptr_read_next,WORD32 bit_pos,const UWORD16 * huff_ori,WORD16 * input,WORD32 * readword)79 WORD cblock_decode_huff_symbol(UWORD8 *ptr_read_next, WORD32 bit_pos,
80 const UWORD16 *huff_ori, WORD16 *input,
81 WORD32 *readword)
82
83 {
84 const UWORD16 *h;
85 WORD tot_bits;
86 {
87 UWORD16 first_offset;
88 WORD16 sign_ret_val;
89 UWORD32 read_word1;
90
91 read_word1 = *readword << bit_pos;
92
93 h = (UWORD16 *)(huff_ori);
94 first_offset = 7;
95
96 h += (read_word1) >> (32 - first_offset);
97 sign_ret_val = *h;
98 tot_bits = 0;
99
100 while (sign_ret_val > 0) {
101 tot_bits += first_offset;
102 bit_pos += first_offset;
103
104 if ((bit_pos -= 8) >= 0) {
105 *readword = (*readword << 8) | *ptr_read_next;
106 ptr_read_next++;
107 } else {
108 bit_pos += 8;
109 }
110
111 read_word1 = (read_word1) << (first_offset);
112
113 first_offset = (sign_ret_val >> 11);
114 h += sign_ret_val & (0x07FF);
115
116 h += (read_word1) >> (32 - first_offset);
117 sign_ret_val = *h;
118 }
119
120 tot_bits += ((sign_ret_val & 0x7fff) >> 11);
121 bit_pos += ((sign_ret_val & 0x7fff) >> 11);
122 if ((bit_pos - 8) >= 0) {
123 *readword = (*readword << 8) | *ptr_read_next;
124 }
125
126 *input = (sign_ret_val & (0x07FF)) - 60;
127 }
128
129 return tot_bits;
130 }
131
ixheaacd_dec_coupling_channel_element(ia_handle_bit_buf_struct bs,ia_aac_decoder_struct * aac_handle,WORD32 samp_rate_idx,ia_aac_dec_tables_struct * ptr_aac_tables,ixheaacd_misc_tables * common_tables_ptr,WORD * element_index_order,ia_enhaacplus_dec_ind_cc * ind_channel_info,WORD32 total_channels,WORD32 frame_size,WORD32 audio_object_type,ia_eld_specific_config_struct eld_specific_config,WORD32 ele_type)132 IA_ERRORCODE ixheaacd_dec_coupling_channel_element(
133 ia_handle_bit_buf_struct bs, ia_aac_decoder_struct *aac_handle,
134 WORD32 samp_rate_idx, ia_aac_dec_tables_struct *ptr_aac_tables,
135 ixheaacd_misc_tables *common_tables_ptr, WORD *element_index_order,
136 ia_enhaacplus_dec_ind_cc *ind_channel_info, WORD32 total_channels,
137 WORD32 frame_size, WORD32 audio_object_type,
138 ia_eld_specific_config_struct eld_specific_config, WORD32 ele_type) {
139 WORD32 element_instance_tag;
140 LOOPIDX c;
141
142 WORD ind_sw_cce_flag, num_coupled_elements;
143
144 WORD num_gain_element_lists = 0;
145 WORD cc_domain;
146 WORD gain_element_sign;
147 WORD gain_element_scale;
148
149 const UWORD16 *hcod_sf =
150 ptr_aac_tables->pstr_huffmann_tables->huffman_code_book_scl;
151 const UWORD32 *table_idx =
152 ptr_aac_tables->pstr_huffmann_tables->huffman_code_book_scl_index;
153 WORD16 index, length;
154
155 IA_ERRORCODE error_status = IA_NO_ERROR;
156
157 element_instance_tag = ixheaacd_read_bits_buf(bs, 4);
158 element_index_order[0] = element_instance_tag;
159
160 ind_sw_cce_flag = ixheaacd_read_bits_buf(bs, 1);
161 num_coupled_elements = ixheaacd_read_bits_buf(bs, 3);
162
163 for (c = 0; c < MAX_BS_ELEMENT; c++)
164 ind_channel_info->elements_coupled[c] = -1;
165
166 ind_channel_info->num_coupled_elements = num_coupled_elements;
167
168 for (c = 0; c < (num_coupled_elements + 1); c++) {
169 num_gain_element_lists++;
170
171 ind_channel_info->cc_target_is_cpe[c] = ixheaacd_read_bits_buf(bs, 1);
172 ind_channel_info->cc_target_tag_select[c] = ixheaacd_read_bits_buf(bs, 4);
173 if (ind_channel_info->cc_target_is_cpe[c]) {
174 ind_channel_info->cc_l[c] = ixheaacd_read_bits_buf(bs, 1);
175 ind_channel_info->cc_r[c] = ixheaacd_read_bits_buf(bs, 1);
176 if (ind_channel_info->cc_l[c] && ind_channel_info->cc_r[c])
177 num_gain_element_lists++;
178 ind_channel_info->elements_coupled[c] = 1;
179 } else
180 ind_channel_info->elements_coupled[c] = 0;
181 }
182 if ((ind_sw_cce_flag == 0) && (num_gain_element_lists > MAX_BS_ELEMENT)) {
183 return IA_FATAL_ERROR;
184 }
185 cc_domain = ixheaacd_read_bits_buf(bs, 1);
186 gain_element_sign = ixheaacd_read_bits_buf(bs, 1);
187 gain_element_scale = ixheaacd_read_bits_buf(bs, 2);
188
189 aac_handle->pstr_aac_dec_ch_info[0]->str_ics_info.num_swb_window = 0;
190 aac_handle->pstr_aac_dec_ch_info[0]->str_ics_info.sampling_rate_index =
191 samp_rate_idx;
192
193 aac_handle->pstr_aac_dec_ch_info[0]->common_window = 0;
194
195 error_status = ixheaacd_individual_ch_stream(
196 bs, aac_handle, 1, frame_size, total_channels, audio_object_type,
197 eld_specific_config, ele_type);
198
199 if (error_status) return error_status;
200
201 ind_channel_info->cc_gain[0] = 1 << 29;
202 for (c = 1; c < num_gain_element_lists; c++) {
203 WORD cge;
204 WORD common_gain_element_present[MAX_BS_ELEMENT];
205 WORD16 norm_value;
206
207 if (ind_sw_cce_flag)
208 cge = 1;
209 else {
210 common_gain_element_present[c] = ixheaacd_read_bits_buf(bs, 1);
211 cge = common_gain_element_present[c];
212 return IA_ENHAACPLUS_DEC_EXE_FATAL_UNIMPLEMENTED_CCE;
213 }
214 if (cge) {
215 UWORD8 *ptr_read_next = bs->ptr_read_next;
216 WORD32 bit_pos = 7 - bs->bit_pos;
217 WORD32 read_word =
218 ixheaacd_aac_showbits_32(bs->ptr_read_next, bs->cnt_bits, NULL);
219 UWORD32 read_word1;
220
221 read_word1 = read_word << bit_pos;
222 ixheaacd_huffman_decode(read_word1, &index, &length, hcod_sf, table_idx);
223
224 bit_pos += length;
225
226 ixheaacd_aac_read_byte(&ptr_read_next, &bit_pos, &read_word);
227 while (bit_pos > 8)
228 ixheaacd_aac_read_byte(&ptr_read_next, &bit_pos, &read_word);
229
230 bs->ptr_read_next = ptr_read_next;
231 bs->bit_pos = 7 - bit_pos;
232 bs->cnt_bits -= length;
233
234 norm_value = index - 60;
235 if (norm_value == -1)
236 ind_channel_info->cc_gain[c] =
237 common_tables_ptr->cc_gain_scale[gain_element_scale];
238 else {
239 int i;
240 ind_channel_info->cc_gain[c] =
241 common_tables_ptr->cc_gain_scale[gain_element_scale];
242 for (i = 0; i < (-norm_value) - 1; i++) {
243 ind_channel_info->cc_gain[c] = ixheaacd_mul32_sh(
244 ind_channel_info->cc_gain[c],
245 common_tables_ptr->cc_gain_scale[gain_element_scale], 29);
246 }
247 }
248 } else {
249 return IA_ENHAACPLUS_DEC_EXE_FATAL_UNIMPLEMENTED_CCE;
250 }
251 }
252 if (bs->cnt_bits < 0) {
253 return IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES;
254 }
255 return error_status;
256 }
257
ixheaacd_dec_couple_channel(WORD16 * p_time_data,WORD16 * out_samp_cc,WORD16 frame_size,WORD total_channels,WORD32 gain_cc)258 void ixheaacd_dec_couple_channel(WORD16 *p_time_data, WORD16 *out_samp_cc,
259 WORD16 frame_size, WORD total_channels,
260 WORD32 gain_cc)
261
262 {
263 WORD i;
264 WORD16 out_cc;
265 WORD16 *ptr_out_samp = &out_samp_cc[0];
266 for (i = frame_size - 1; i >= 0; i--) {
267 out_cc = ixheaacd_round16(ixheaacd_shl32_sat(
268 ixheaacd_mult32x16in32(gain_cc, *ptr_out_samp++), 3));
269 *p_time_data = ixheaacd_add16_sat(out_cc, *p_time_data);
270 p_time_data += total_channels;
271 }
272 }
273
ixheaacd_dec_ind_coupling(ia_exhaacplus_dec_api_struct * p_obj_exhaacplus_dec,WORD16 * coup_ch_output,WORD16 frame_size,WORD total_channels,WORD16 * ptr_time_data)274 void ixheaacd_dec_ind_coupling(
275 ia_exhaacplus_dec_api_struct *p_obj_exhaacplus_dec, WORD16 *coup_ch_output,
276 WORD16 frame_size, WORD total_channels, WORD16 *ptr_time_data)
277
278 {
279 WORD c, j, k;
280 WORD l;
281 WORD coupling_channel;
282
283 WORD16 *out_samp_cc;
284
285 ia_enhaacplus_dec_ind_cc *ind_channel_info;
286
287 {
288 coupling_channel = p_obj_exhaacplus_dec->aac_config.ui_coupling_channel;
289
290 ind_channel_info = &p_obj_exhaacplus_dec->p_state_aac->ind_cc_info;
291
292 out_samp_cc = coup_ch_output;
293
294 j = 0;
295 for (c = 0; c < ind_channel_info->num_coupled_elements + 1; c++) {
296 for (l = 0; l < MAX_BS_ELEMENT; l++) {
297 if (p_obj_exhaacplus_dec->aac_config.element_type[l] ==
298 ind_channel_info->elements_coupled[c] &&
299 p_obj_exhaacplus_dec->aac_config.element_instance_order[l] ==
300 ind_channel_info->cc_target_tag_select[c]) {
301 break;
302 }
303 }
304 if (l == MAX_BS_ELEMENT) {
305 continue;
306 }
307
308 k = p_obj_exhaacplus_dec->aac_config.slot_element[l];
309
310 if (ind_channel_info->cc_target_is_cpe[c] == 0) {
311 WORD16 *p_time_data = &ptr_time_data[k];
312
313 WORD32 gain_cc = ind_channel_info->cc_gain[j];
314
315 ixheaacd_dec_couple_channel(p_time_data, out_samp_cc, frame_size,
316 total_channels, gain_cc);
317 }
318 if (ind_channel_info->cc_target_is_cpe[c] == 1) {
319 if (ind_channel_info->cc_l[c] == 1) {
320 WORD16 *p_time_data = &ptr_time_data[k];
321
322 WORD32 gain_cc = ind_channel_info->cc_gain[j];
323
324 ixheaacd_dec_couple_channel(p_time_data, out_samp_cc, frame_size,
325 total_channels, gain_cc);
326 }
327
328 k = p_obj_exhaacplus_dec->aac_config.slot_element[l];
329
330 if (ind_channel_info->cc_r[c] == 1) {
331 WORD16 *p_time_data = &ptr_time_data[k + 1];
332 WORD32 gain_cc = ind_channel_info->cc_gain[j + 1];
333
334 ixheaacd_dec_couple_channel(p_time_data, out_samp_cc, frame_size,
335 total_channels, gain_cc);
336 }
337 }
338 if (ind_channel_info->cc_target_is_cpe[c] == 1) {
339 j += 2;
340 } else {
341 j += 1;
342 }
343 }
344 }
345 }
346
ixheaacd_dec_downmix_to_stereo(ia_exhaacplus_dec_api_struct * p_obj_exhaacplus_dec,WORD16 frame_size,WORD total_elements,WORD16 * ptr_time_data,WORD total_channels)347 void ixheaacd_dec_downmix_to_stereo(
348 ia_exhaacplus_dec_api_struct *p_obj_exhaacplus_dec, WORD16 frame_size,
349 WORD total_elements, WORD16 *ptr_time_data, WORD total_channels) {
350 LOOPIDX i, j;
351 WORD k = 0;
352 if (5 == total_channels) k = 0;
353 if (6 == total_channels) k = 1;
354 if (7 == total_channels) k = 2;
355 if (8 == total_channels) k = 3;
356
357 for (j = 0; j < frame_size; j++) {
358 WORD16 temp_l = 0, temp_r = 0;
359 for (i = 0; i < total_elements; i++) {
360 if (0 == p_obj_exhaacplus_dec->aac_config.element_type[i] ||
361 3 == p_obj_exhaacplus_dec->aac_config.element_type[i]) {
362 temp_l += (WORD16)(
363 ixheaacd_mult32x16in32(
364 p_obj_exhaacplus_dec->common_tables->down_mix_martix
365 [k][0][p_obj_exhaacplus_dec->aac_config.slot_element[i]],
366 ptr_time_data[j * total_channels +
367 p_obj_exhaacplus_dec->aac_config
368 .slot_element[i]]) >>
369 14);
370
371 temp_r += (WORD16)(
372 ixheaacd_mult32x16in32(
373 p_obj_exhaacplus_dec->common_tables->down_mix_martix
374 [k][1][p_obj_exhaacplus_dec->aac_config.slot_element[i]],
375 ptr_time_data[j * total_channels +
376 p_obj_exhaacplus_dec->aac_config
377 .slot_element[i]]) >>
378 14);
379 }
380 if (1 == p_obj_exhaacplus_dec->aac_config.element_type[i]) {
381 temp_l += (WORD16)(
382 ixheaacd_mult32x16in32(
383 p_obj_exhaacplus_dec->common_tables->down_mix_martix
384 [k][0][p_obj_exhaacplus_dec->aac_config.slot_element[i]],
385 ptr_time_data[j * total_channels +
386 p_obj_exhaacplus_dec->aac_config
387 .slot_element[i]]) >>
388 14);
389
390 temp_r += (WORD16)(
391 ixheaacd_mult32x16in32(
392 p_obj_exhaacplus_dec->common_tables->down_mix_martix
393 [k][1]
394 [p_obj_exhaacplus_dec->aac_config.slot_element[i] + 1],
395 ptr_time_data[j * total_channels +
396 p_obj_exhaacplus_dec->aac_config.slot_element[i] +
397 1]) >>
398 14);
399 }
400 }
401
402 ptr_time_data[2 * j] = temp_l;
403 ptr_time_data[2 * j + 1] = temp_r;
404 }
405 }
406