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 <stdlib.h>
21 #include <math.h>
22 #include <string.h>
23 #include "impd_type_def.h"
24 #include "impd_error_standards.h"
25 #include <string.h>
26 #include "impd_drc_extr_delta_coded_info.h"
27 #include "impd_drc_common.h"
28 #include "impd_drc_struct.h"
29 #include "impd_drc_interface.h"
30 #include "impd_memory_standards.h"
31 #include "impd_drc_peak_limiter.h"
32 #include "impd_drc_bitbuffer.h"
33 #include "impd_drc_bitstream_dec_api.h"
34 #include "impd_drc_gain_dec.h"
35 #include "impd_drc_filter_bank.h"
36 #include "impd_drc_multi_band.h"
37 #include "impd_drc_process_audio.h"
38 #include "impd_parametric_drc_dec.h"
39 #include "impd_drc_eq.h"
40 #include "impd_drc_gain_decoder.h"
41 #include "impd_drc_selection_process.h"
42 #include "impd_drc_api_struct_def.h"
43 #include "impd_drc_peak_limiter.h"
44 
45 #define PARAMETRIC_DRC_DELAY_MAX_DEFAULT 4096
46 #define EQ_DELAY_MAX_DEFAULT 256
47 
48 IA_ERRORCODE impd_drc_mem_api(ia_drc_api_struct *p_obj_drc, WORD32 iCmd,
49                               WORD32 iIdx, pVOID pvValue);
50 
51 IA_ERRORCODE impd_drc_fill_mem_tables(ia_drc_api_struct *p_obj_drc);
52 
53 WORD32
54 impd_drc_dec_interface_process(ia_bit_buf_struct *it_bit_buff,
55                                ia_drc_interface_struct *pstr_drc_interface,
56                                UWORD8 *it_bit_buf, WORD32 num_bit_stream_bits,
57                                WORD32 *num_bits_read);
58 
59 WORD32
60 impd_drc_dec_interface_add_effect_type(
61     ia_drc_interface_struct *pstr_drc_interface, WORD32 drc_effect_type,
62     WORD32 target_loudness, WORD32 loud_norm);
63 
64 #define BITSTREAM_FILE_FORMAT_SPLIT 1
65 #define LIM_DEFAULT_THRESHOLD (0.89125094f)
66 
impd_match_downmix(WORD32 downmix_id,WORD32 dec_downmix_id)67 static WORD32 impd_match_downmix(WORD32 downmix_id, WORD32 dec_downmix_id) {
68   WORD32 id_match = 0;
69 
70   switch (dec_downmix_id) {
71     case 0:
72       id_match = (downmix_id == 0);
73       break;
74     case 1:
75       id_match = ((downmix_id == 0) || (downmix_id == 0x7F));
76       break;
77     case 2:
78       id_match = (downmix_id == 0x7F);
79       break;
80     case 3:
81       id_match = ((downmix_id != 0) && (downmix_id != 0x7F));
82       break;
83     case 4:
84       id_match = (downmix_id != 0);
85       break;
86   }
87   return id_match;
88 }
89 
impd_drc_set_default_config(ia_drc_api_struct * p_obj_drc)90 IA_ERRORCODE impd_drc_set_default_config(ia_drc_api_struct *p_obj_drc) {
91   memset(p_obj_drc, 0, sizeof(*p_obj_drc));
92   p_obj_drc->str_config.bitstream_file_format = 1;
93   p_obj_drc->str_config.dec_type = 0;
94   p_obj_drc->str_config.sub_band_domain_mode = 0;
95   p_obj_drc->str_config.sub_band_count = 0;
96   p_obj_drc->str_config.sub_band_down_sampling_factor = 0;
97   p_obj_drc->str_config.sampling_rate = 0;
98   p_obj_drc->str_config.frame_size = 1024;
99   p_obj_drc->str_config.num_ch_in = -1;
100   p_obj_drc->str_config.num_ch_out = -1;
101   p_obj_drc->str_config.control_parameter_index = -1;
102   p_obj_drc->str_config.peak_limiter = 0;
103   p_obj_drc->str_config.delay_mode = 0;
104   p_obj_drc->str_config.interface_bitstream_present = 1;
105   p_obj_drc->str_config.gain_delay_samples = 0;
106   p_obj_drc->str_config.absorb_delay_on = 1;
107   p_obj_drc->str_config.subband_domain_io_flag = 0;
108   p_obj_drc->str_bit_handler.gain_stream_flag = 1;
109   p_obj_drc->str_config.constant_delay_on = 0;
110   p_obj_drc->str_config.audio_delay_samples = 0;
111   p_obj_drc->str_config.effect_type = 0;
112   p_obj_drc->str_config.target_loudness = -24;
113   p_obj_drc->str_config.loud_norm_flag = 0;
114   memset(&p_obj_drc->str_bit_handler, 0, sizeof(p_obj_drc->str_bit_handler));
115 
116   return IA_NO_ERROR;
117 }
118 
impd_drc_set_default_bitstream_config(ia_drc_config * pstr_drc_config)119 IA_ERRORCODE impd_drc_set_default_bitstream_config(
120     ia_drc_config *pstr_drc_config) {
121   WORD32 i;
122 
123   pstr_drc_config->sample_rate_present = 0;
124   pstr_drc_config->sampling_rate = 0;
125   pstr_drc_config->dwnmix_instructions_count = 0;
126   pstr_drc_config->drc_coefficients_drc_count = 1;
127   pstr_drc_config->drc_instructions_uni_drc_count = 4;
128   pstr_drc_config->drc_instructions_count_plus = 5;
129   pstr_drc_config->drc_description_basic_present = 0;
130   pstr_drc_config->drc_coefficients_basic_count = 0;
131   pstr_drc_config->drc_instructions_basic_count = 0;
132   pstr_drc_config->drc_config_ext_present = 1;
133   pstr_drc_config->apply_drc = 0;
134   pstr_drc_config->str_drc_config_ext.drc_config_ext_type[0] = 2;
135   pstr_drc_config->str_drc_config_ext.ext_bit_size[0] = 345;
136   pstr_drc_config->str_drc_config_ext.parametric_drc_present = 0;
137   pstr_drc_config->str_drc_config_ext.drc_extension_v1_present = 1;
138   pstr_drc_config->str_p_loc_drc_coefficients_uni_drc[0].version = 1;
139   pstr_drc_config->str_p_loc_drc_coefficients_uni_drc[0].drc_location = 1;
140   pstr_drc_config->str_p_loc_drc_coefficients_uni_drc[0].gain_set_count = 4;
141   for (i = 0;
142        i <
143        pstr_drc_config->str_p_loc_drc_coefficients_uni_drc[0].gain_set_count;
144        i++) {
145     pstr_drc_config->str_p_loc_drc_coefficients_uni_drc[0]
146         .gain_set_params[i]
147         .gain_interpolation_type = 1;
148     pstr_drc_config->str_p_loc_drc_coefficients_uni_drc[0]
149         .gain_set_params[i]
150         .band_count = 1;
151   }
152   pstr_drc_config->str_p_loc_drc_coefficients_uni_drc[0].gain_sequence_count =
153       4;
154   pstr_drc_config->str_p_loc_drc_coefficients_uni_drc[0]
155       .gain_set_params_index_for_gain_sequence[0] = 0;
156   pstr_drc_config->str_p_loc_drc_coefficients_uni_drc[0]
157       .gain_set_params_index_for_gain_sequence[1] = 1;
158   pstr_drc_config->str_p_loc_drc_coefficients_uni_drc[0]
159       .gain_set_params_index_for_gain_sequence[2] = 2;
160   pstr_drc_config->str_p_loc_drc_coefficients_uni_drc[0]
161       .gain_set_params_index_for_gain_sequence[3] = 3;
162   pstr_drc_config->str_p_loc_drc_coefficients_uni_drc[0].gain_set_count_plus =
163       4;
164   pstr_drc_config->str_drc_instruction_str[0].drc_set_id = 1;
165   pstr_drc_config->str_drc_instruction_str[0].drc_set_complexity_level = 2;
166   pstr_drc_config->str_drc_instruction_str[0].drc_location = 1;
167   pstr_drc_config->str_drc_instruction_str[0].dwnmix_id_count = 1;
168   pstr_drc_config->str_drc_instruction_str[0].drc_set_effect = 1;
169   pstr_drc_config->str_drc_instruction_str[0].gain_set_index[1] = 1;
170   pstr_drc_config->str_drc_instruction_str[0]
171       .drc_set_target_loudness_value_lower = -63;
172   pstr_drc_config->str_drc_instruction_str[0].num_drc_ch_groups = 2;
173   pstr_drc_config->str_drc_instruction_str[0]
174       .gain_set_index_for_channel_group[1] = 1;
175   pstr_drc_config->str_drc_instruction_str[0].band_count_of_ch_group[0] = 1;
176   pstr_drc_config->str_drc_instruction_str[0].band_count_of_ch_group[1] = 1;
177   pstr_drc_config->str_drc_instruction_str[0]
178       .gain_interpolation_type_for_channel_group[0] = 1;
179   pstr_drc_config->str_drc_instruction_str[0]
180       .gain_interpolation_type_for_channel_group[1] = 1;
181   pstr_drc_config->str_drc_instruction_str[0]
182       .time_delta_min_for_channel_group[0] = 32;
183   pstr_drc_config->str_drc_instruction_str[0]
184       .time_delta_min_for_channel_group[1] = 32;
185   pstr_drc_config->str_drc_instruction_str[0].channel_group_of_ch[1] = 1;
186   pstr_drc_config->str_drc_instruction_str[0].gain_element_count = 2;
187 
188   pstr_drc_config->str_drc_instruction_str[1].drc_set_id = 2;
189   pstr_drc_config->str_drc_instruction_str[1].drc_set_complexity_level = 2;
190   pstr_drc_config->str_drc_instruction_str[1].drc_location = 1;
191   pstr_drc_config->str_drc_instruction_str[1].dwnmix_id_count = 1;
192   pstr_drc_config->str_drc_instruction_str[1].drc_set_effect = 2;
193   pstr_drc_config->str_drc_instruction_str[1].gain_set_index[0] = 1;
194   pstr_drc_config->str_drc_instruction_str[1].gain_set_index[1] = 2;
195   pstr_drc_config->str_drc_instruction_str[1]
196       .drc_set_target_loudness_value_lower = -63;
197   pstr_drc_config->str_drc_instruction_str[1].num_drc_ch_groups = 2;
198   pstr_drc_config->str_drc_instruction_str[1]
199       .gain_set_index_for_channel_group[0] = 1;
200   pstr_drc_config->str_drc_instruction_str[1]
201       .gain_set_index_for_channel_group[1] = 2;
202   pstr_drc_config->str_drc_instruction_str[1].band_count_of_ch_group[0] = 1;
203   pstr_drc_config->str_drc_instruction_str[1].band_count_of_ch_group[1] = 1;
204   pstr_drc_config->str_drc_instruction_str[1]
205       .gain_interpolation_type_for_channel_group[0] = 1;
206   pstr_drc_config->str_drc_instruction_str[1]
207       .gain_interpolation_type_for_channel_group[1] = 1;
208   pstr_drc_config->str_drc_instruction_str[1]
209       .time_delta_min_for_channel_group[0] = 32;
210   pstr_drc_config->str_drc_instruction_str[1]
211       .time_delta_min_for_channel_group[1] = 32;
212   pstr_drc_config->str_drc_instruction_str[1].channel_group_of_ch[1] = 1;
213   pstr_drc_config->str_drc_instruction_str[1].gain_element_count = 2;
214 
215   pstr_drc_config->str_drc_instruction_str[2].drc_set_id = 3;
216   pstr_drc_config->str_drc_instruction_str[2].drc_set_complexity_level = 2;
217   pstr_drc_config->str_drc_instruction_str[2].drc_location = 1;
218   pstr_drc_config->str_drc_instruction_str[2].dwnmix_id_count = 1;
219   pstr_drc_config->str_drc_instruction_str[2].drc_set_effect = 4;
220   pstr_drc_config->str_drc_instruction_str[2].gain_set_index[0] = 2;
221   pstr_drc_config->str_drc_instruction_str[2].gain_set_index[1] = 3;
222   pstr_drc_config->str_drc_instruction_str[2]
223       .drc_set_target_loudness_value_lower = -63;
224   pstr_drc_config->str_drc_instruction_str[2].num_drc_ch_groups = 2;
225   pstr_drc_config->str_drc_instruction_str[2]
226       .gain_set_index_for_channel_group[0] = 2;
227   pstr_drc_config->str_drc_instruction_str[2]
228       .gain_set_index_for_channel_group[1] = 3;
229   pstr_drc_config->str_drc_instruction_str[2].band_count_of_ch_group[0] = 1;
230   pstr_drc_config->str_drc_instruction_str[2].band_count_of_ch_group[1] = 1;
231   pstr_drc_config->str_drc_instruction_str[2]
232       .gain_interpolation_type_for_channel_group[0] = 1;
233   pstr_drc_config->str_drc_instruction_str[2]
234       .gain_interpolation_type_for_channel_group[1] = 1;
235   pstr_drc_config->str_drc_instruction_str[2]
236       .time_delta_min_for_channel_group[0] = 32;
237   pstr_drc_config->str_drc_instruction_str[2]
238       .time_delta_min_for_channel_group[1] = 32;
239   pstr_drc_config->str_drc_instruction_str[2].channel_group_of_ch[1] = 1;
240   pstr_drc_config->str_drc_instruction_str[2].gain_element_count = 2;
241 
242   pstr_drc_config->str_drc_instruction_str[3].drc_set_id = 4;
243   pstr_drc_config->str_drc_instruction_str[3].drc_set_complexity_level = 2;
244   pstr_drc_config->str_drc_instruction_str[3].drc_location = 1;
245   pstr_drc_config->str_drc_instruction_str[3].dwnmix_id_count = 1;
246   pstr_drc_config->str_drc_instruction_str[3].drc_set_effect = 32;
247   pstr_drc_config->str_drc_instruction_str[3].gain_set_index[0] = 3;
248   pstr_drc_config->str_drc_instruction_str[3].gain_set_index[1] = 0;
249   pstr_drc_config->str_drc_instruction_str[3]
250       .drc_set_target_loudness_value_lower = -63;
251   pstr_drc_config->str_drc_instruction_str[3].num_drc_ch_groups = 2;
252   pstr_drc_config->str_drc_instruction_str[3]
253       .gain_set_index_for_channel_group[0] = 3;
254   pstr_drc_config->str_drc_instruction_str[3]
255       .gain_set_index_for_channel_group[1] = 0;
256   pstr_drc_config->str_drc_instruction_str[3].band_count_of_ch_group[0] = 1;
257   pstr_drc_config->str_drc_instruction_str[3].band_count_of_ch_group[1] = 1;
258   pstr_drc_config->str_drc_instruction_str[3]
259       .gain_interpolation_type_for_channel_group[0] = 1;
260   pstr_drc_config->str_drc_instruction_str[3]
261       .gain_interpolation_type_for_channel_group[1] = 1;
262   pstr_drc_config->str_drc_instruction_str[3]
263       .time_delta_min_for_channel_group[0] = 32;
264   pstr_drc_config->str_drc_instruction_str[3]
265       .time_delta_min_for_channel_group[1] = 32;
266   pstr_drc_config->str_drc_instruction_str[3].channel_group_of_ch[1] = 1;
267   pstr_drc_config->str_drc_instruction_str[3].gain_element_count = 2;
268 
269   pstr_drc_config->str_drc_instruction_str[4].drc_set_id = -1;
270   pstr_drc_config->str_drc_instruction_str[4].dwnmix_id_count = 1;
271   pstr_drc_config->channel_layout.base_channel_count = 2;
272 
273   return IA_NO_ERROR;
274 }
275 
impd_drc_set_struct_pointer(ia_drc_api_struct * p_obj_drc)276 IA_ERRORCODE impd_drc_set_struct_pointer(ia_drc_api_struct *p_obj_drc) {
277   pUWORD8 persistent_ptr = (pUWORD8)p_obj_drc->p_state->persistent_ptr;
278 
279   UWORD64 persistent_size_consumed = 0;
280   p_obj_drc->str_payload.pstr_bitstream_dec =
281       (ia_drc_bits_dec_struct *)persistent_ptr;
282   persistent_ptr += sizeof(ia_drc_bits_dec_struct);
283 
284   p_obj_drc->str_payload.pstr_gain_dec[0] =
285       (ia_drc_gain_dec_struct *)persistent_ptr;
286   persistent_ptr += sizeof(ia_drc_gain_dec_struct);
287 
288   p_obj_drc->str_payload.pstr_gain_dec[1] =
289       (ia_drc_gain_dec_struct *)persistent_ptr;
290   persistent_ptr += sizeof(ia_drc_gain_dec_struct);
291 
292   p_obj_drc->str_payload.pstr_loudness_info =
293       (ia_drc_loudness_info_set_struct *)persistent_ptr;
294   persistent_ptr += sizeof(ia_drc_loudness_info_set_struct);
295 
296   p_obj_drc->str_payload.pstr_drc_gain = (ia_drc_gain_struct *)persistent_ptr;
297   persistent_ptr += sizeof(ia_drc_gain_struct);
298 
299   p_obj_drc->str_payload.pstr_drc_interface =
300       (ia_drc_interface_struct *)persistent_ptr;
301   persistent_ptr += sizeof(ia_drc_interface_struct);
302 
303   p_obj_drc->str_payload.pstr_drc_config = (ia_drc_config *)persistent_ptr;
304   persistent_ptr += sizeof(ia_drc_config);
305 
306   p_obj_drc->str_payload.pstr_selection_proc =
307       (ia_drc_sel_pro_struct *)persistent_ptr;
308   persistent_ptr += sizeof(ia_drc_sel_pro_struct);
309 
310   p_obj_drc->str_bit_handler.it_bit_buf = (UWORD8 *)persistent_ptr;
311   persistent_ptr += MAX_DRC_BS_BUF_SIZE;
312 
313   p_obj_drc->str_payload.pstr_drc_sel_proc_params =
314       (ia_drc_sel_proc_params_struct *)persistent_ptr;
315   persistent_ptr += sizeof(ia_drc_sel_proc_params_struct);
316 
317   p_obj_drc->str_payload.pstr_drc_sel_proc_output =
318       (ia_drc_sel_proc_output_struct *)persistent_ptr;
319   persistent_ptr += sizeof(ia_drc_sel_proc_output_struct);
320 
321   p_obj_drc->str_bit_handler.bitstream_drc_config = (UWORD8 *)persistent_ptr;
322   persistent_ptr += MAX_BS_BUF_SIZE;
323 
324   p_obj_drc->str_bit_handler.bitstream_loudness_info = (UWORD8 *)persistent_ptr;
325   persistent_ptr += MAX_BS_BUF_SIZE;
326 
327   p_obj_drc->str_bit_handler.bitstream_unidrc_interface =
328       (UWORD8 *)persistent_ptr;
329   persistent_ptr += MAX_BS_BUF_SIZE;
330 
331   p_obj_drc->str_payload.pstr_peak_limiter =
332       (ia_drc_peak_limiter_struct *)persistent_ptr;
333   persistent_ptr += sizeof(ia_drc_peak_limiter_struct);
334 
335   p_obj_drc->str_payload.pstr_peak_limiter->buffer = (FLOAT32 *)persistent_ptr;
336   persistent_ptr += PEAK_LIM_BUF_SIZE;
337 
338   p_obj_drc->str_payload.pstr_qmf_filter =
339       (ia_drc_qmf_filt_struct *)persistent_ptr;
340   persistent_ptr += sizeof(ia_drc_qmf_filt_struct);
341 
342   p_obj_drc->str_payload.pstr_qmf_filter->ana_buff = (FLOAT64 *)persistent_ptr;
343   persistent_ptr += ANALY_BUF_SIZE;
344 
345   p_obj_drc->str_payload.pstr_qmf_filter->syn_buff = (FLOAT64 *)persistent_ptr;
346   persistent_ptr += SYNTH_BUF_SIZE;
347 
348   persistent_size_consumed =
349       (UWORD64)(persistent_ptr - (pUWORD8)p_obj_drc->p_state->persistent_ptr);
350 
351   if ((UWORD64)p_obj_drc->p_mem_info[IA_MEMTYPE_PERSIST].ui_size <
352       persistent_size_consumed)
353     return IA_FATAL_ERROR;
354 
355   p_obj_drc->p_state->persistent_ptr = (pVOID)persistent_ptr;
356   return IA_NO_ERROR;
357 }
358 
init_qmf_filt_bank(ia_drc_qmf_filt_struct * qmf_filt)359 VOID init_qmf_filt_bank(ia_drc_qmf_filt_struct *qmf_filt) {
360   WORD32 l, k;
361 
362   FLOAT64 gain_ana = 64.0 / QMF_FILT_RESOLUTION;
363   FLOAT64 gain_syn = 1.0 / 64.0;
364   for (l = 0; l < 2 * QMF_FILT_RESOLUTION; l++) {
365     for (k = 0; k < QMF_FILT_RESOLUTION; k++) {
366       qmf_filt->syn_tab_real[l][k] =
367           gain_syn * cos((0.0245436926) * (k + 0.5) * (2 * l - 255.0));
368       qmf_filt->syn_tab_imag[l][k] =
369           gain_syn * sin((0.0245436926) * (k + 0.5) * (2 * l - 255.0));
370       qmf_filt->ana_tab_real[k][l] =
371           gain_ana * cos((0.0245436926) * (k + 0.5) * (2 * l - 1.0));
372       qmf_filt->ana_tab_imag[k][l] =
373           gain_ana * sin((0.0245436926) * (k + 0.5) * (2 * l - 1.0));
374     }
375   }
376 }
377 
impd_drc_init(ia_drc_api_struct * p_obj_drc)378 IA_ERRORCODE impd_drc_init(ia_drc_api_struct *p_obj_drc) {
379   IA_ERRORCODE err_code = IA_NO_ERROR;
380   WORD32 i, j;
381 
382   pVOID persistent_ptr = p_obj_drc->p_state->persistent_ptr;
383 
384   WORD32 decDownmixIdList[NUM_GAIN_DEC_INSTANCES] = {0, 4};
385 
386   p_obj_drc->p_state->delay_in_output = 0;
387   p_obj_drc->str_payload.pstr_selection_proc->first_frame = 1;
388 
389   impd_create_init_bit_buf(&p_obj_drc->str_bit_buf,
390                            p_obj_drc->str_bit_handler.it_bit_buf,
391                            p_obj_drc->str_bit_handler.num_bytes_bs / 8);
392 
393   p_obj_drc->pstr_bit_buf = &p_obj_drc->str_bit_buf;
394 
395   err_code = impd_init_drc_bitstream_dec(
396       p_obj_drc->str_payload.pstr_bitstream_dec,
397       p_obj_drc->str_config.sampling_rate, p_obj_drc->str_config.frame_size,
398       p_obj_drc->str_config.delay_mode, -1, 0);
399   if (err_code != IA_NO_ERROR) return err_code;
400 
401   for (i = 0; i < NUM_GAIN_DEC_INSTANCES; i++) {
402     err_code = impd_init_drc_decode(p_obj_drc->str_config.frame_size,
403                                     p_obj_drc->str_config.sampling_rate,
404                                     p_obj_drc->str_config.gain_delay_samples,
405                                     p_obj_drc->str_config.delay_mode,
406                                     p_obj_drc->str_config.sub_band_domain_mode,
407                                     p_obj_drc->str_payload.pstr_gain_dec[i]);
408     if (err_code != IA_NO_ERROR) return err_code;
409   }
410 
411   err_code = impd_drc_dec_interface_add_effect_type(
412       p_obj_drc->str_payload.pstr_drc_interface,
413       p_obj_drc->str_config.effect_type, p_obj_drc->str_config.target_loudness,
414       p_obj_drc->str_config.loud_norm_flag);
415 
416   if (err_code != IA_NO_ERROR) return err_code;
417 
418   err_code = impd_drc_uni_selction_proc_init(
419       p_obj_drc->str_payload.pstr_selection_proc, 0,
420       p_obj_drc->str_payload.pstr_drc_interface,
421       p_obj_drc->str_config.sub_band_domain_mode);
422   if (err_code != IA_NO_ERROR) return err_code;
423 
424   if (p_obj_drc->str_payload.pstr_drc_interface
425           ->loudness_norm_parameter_interface_flag &&
426       p_obj_drc->str_payload.pstr_drc_interface->loudness_norm_param_interface
427           .peak_limiter) {
428     p_obj_drc->str_config.peak_limiter = 1;
429   }
430 
431   p_obj_drc->str_payload.pstr_loudness_info->loudness_info_album_count = 0;
432   p_obj_drc->str_payload.pstr_loudness_info->loudness_info_count = 0;
433   p_obj_drc->str_payload.pstr_loudness_info->loudness_info_set_ext_present = 0;
434   p_obj_drc->p_state->ui_exe_done = 0;
435 
436   err_code = impd_process_drc_bitstream_dec_config(
437       p_obj_drc->str_payload.pstr_bitstream_dec, p_obj_drc->pstr_bit_buf,
438       p_obj_drc->str_payload.pstr_drc_config,
439       &p_obj_drc->str_bit_handler.bitstream_drc_config[0],
440       p_obj_drc->str_bit_handler.num_bytes_bs_drc_config);
441 
442   if (err_code == 1) {
443     memset(p_obj_drc->str_payload.pstr_drc_config, 0, sizeof(ia_drc_config));
444     err_code = impd_drc_set_default_bitstream_config(
445         p_obj_drc->str_payload.pstr_drc_config);
446     p_obj_drc->str_payload.pstr_drc_config->channel_layout.base_channel_count =
447         p_obj_drc->str_config.num_ch_in;
448   }
449 
450   if (err_code != IA_NO_ERROR) return err_code;
451   err_code = impd_process_drc_bitstream_dec_loudness_info_set(
452       p_obj_drc->pstr_bit_buf, p_obj_drc->str_payload.pstr_loudness_info,
453       &p_obj_drc->str_bit_handler.bitstream_loudness_info[0],
454       p_obj_drc->str_bit_handler.num_bytes_bs_loudness_info);
455   if (err_code != IA_NO_ERROR) return err_code;
456 
457   err_code = impd_drc_uni_sel_proc_process(
458       p_obj_drc->str_payload.pstr_selection_proc,
459       p_obj_drc->str_payload.pstr_drc_config,
460       p_obj_drc->str_payload.pstr_loudness_info,
461       p_obj_drc->str_payload.pstr_drc_sel_proc_output);
462   if (err_code != IA_NO_ERROR) return err_code;
463 
464   for (i = 0; i < NUM_GAIN_DEC_INSTANCES; i++) {
465     WORD32 audio_num_chan = 0;
466     WORD32 numMatchingDrcSets = 0;
467     WORD32 matchingDrcSetIds[3], matchingDownmixIds[3];
468     for (j = 0;
469          j < p_obj_drc->str_payload.pstr_drc_sel_proc_output->num_sel_drc_sets;
470          j++) {
471       if (impd_match_downmix(p_obj_drc->str_payload.pstr_drc_sel_proc_output
472                                  ->sel_downmix_ids[j],
473                              decDownmixIdList[i])) {
474         matchingDrcSetIds[numMatchingDrcSets] =
475             p_obj_drc->str_payload.pstr_drc_sel_proc_output->sel_drc_set_ids[j];
476         matchingDownmixIds[numMatchingDrcSets] =
477             p_obj_drc->str_payload.pstr_drc_sel_proc_output->sel_downmix_ids[j];
478         numMatchingDrcSets++;
479       }
480     }
481     if (i == 0) {
482       if (p_obj_drc->str_config.num_ch_in !=
483           p_obj_drc->str_payload.pstr_drc_sel_proc_output->base_channel_count)
484 
485         return -1;
486       audio_num_chan = p_obj_drc->str_config.num_ch_in;
487     } else if (i == 1) {
488       p_obj_drc->str_config.num_ch_out =
489           p_obj_drc->str_payload.pstr_drc_sel_proc_output->target_channel_count;
490       audio_num_chan = p_obj_drc->str_config.num_ch_out;
491     }
492 
493     err_code = impd_init_drc_decode_post_config(
494         audio_num_chan, matchingDrcSetIds, matchingDownmixIds,
495         numMatchingDrcSets,
496         p_obj_drc->str_payload.pstr_drc_sel_proc_output->sel_eq_set_ids[i]
497 
498         ,
499         p_obj_drc->str_payload.pstr_gain_dec[i],
500         p_obj_drc->str_payload.pstr_drc_config,
501         p_obj_drc->str_payload.pstr_loudness_info, &persistent_ptr);
502     if (err_code) return err_code;
503 
504     impd_get_parametric_drc_delay(
505         p_obj_drc->str_payload.pstr_gain_dec[i],
506         p_obj_drc->str_payload.pstr_drc_config,
507         &p_obj_drc->str_config.parametric_drc_delay_gain_dec_instance,
508         &p_obj_drc->str_config.parametric_drc_delay_max);
509     impd_get_eq_delay(p_obj_drc->str_payload.pstr_gain_dec[i],
510                       p_obj_drc->str_payload.pstr_drc_config,
511                       &p_obj_drc->str_config.eq_delay_gain_dec_instance,
512                       &p_obj_drc->str_config.eq_delay_max);
513     p_obj_drc->str_config.parametric_drc_delay +=
514         p_obj_drc->str_config.parametric_drc_delay_gain_dec_instance;
515     p_obj_drc->str_config.eq_delay +=
516         p_obj_drc->str_config.eq_delay_gain_dec_instance;
517   }
518 
519   {
520     if (p_obj_drc->str_config.parametric_drc_delay_max == -1) {
521       p_obj_drc->str_config.parametric_drc_delay_max =
522           PARAMETRIC_DRC_DELAY_MAX_DEFAULT;
523     }
524     if (p_obj_drc->str_config.eq_delay_max == -1) {
525       p_obj_drc->str_config.eq_delay_max = EQ_DELAY_MAX_DEFAULT;
526     }
527 
528     if (!p_obj_drc->str_config.constant_delay_on) {
529       p_obj_drc->p_state->delay_in_output +=
530           p_obj_drc->str_config.parametric_drc_delay +
531           p_obj_drc->str_config.eq_delay +
532           p_obj_drc->str_config.audio_delay_samples;
533       p_obj_drc->str_config.delay_line_samples =
534           p_obj_drc->str_config.audio_delay_samples;
535 
536       if (!p_obj_drc->str_config.absorb_delay_on) {
537         p_obj_drc->p_state->delay_in_output = 0;
538       }
539     } else {
540       p_obj_drc->p_state->delay_in_output +=
541           p_obj_drc->str_config.parametric_drc_delay_max +
542           p_obj_drc->str_config.eq_delay_max +
543           p_obj_drc->str_config.audio_delay_samples;
544       p_obj_drc->str_config.delay_line_samples =
545           p_obj_drc->p_state->delay_in_output -
546           p_obj_drc->str_config.parametric_drc_delay +
547           p_obj_drc->str_config.eq_delay;
548 
549       if (!p_obj_drc->str_config.absorb_delay_on) {
550         p_obj_drc->p_state->delay_in_output = 0;
551       }
552     }
553   }
554   if (p_obj_drc->str_config.dec_type == 1) {
555     init_qmf_filt_bank(p_obj_drc->str_payload.pstr_qmf_filter);
556   }
557 
558   if (p_obj_drc->str_config.peak_limiter) {
559     err_code = impd_peak_limiter_init(
560         p_obj_drc->str_payload.pstr_peak_limiter, DEFAULT_ATTACK_TIME_MS,
561         DEFAULT_RELEASE_TIME_MS, LIM_DEFAULT_THRESHOLD,
562         p_obj_drc->str_config.num_ch_out, p_obj_drc->str_config.sampling_rate,
563         p_obj_drc->str_payload.pstr_peak_limiter->buffer);
564     if (err_code) return (err_code);
565   }
566 
567   return IA_NO_ERROR;
568 }
569