1 /******************************************************************************
2 * *
3 * Copyright (C) 2023 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 "ixheaac_type_def.h"
22 #include "ixheaac_constants.h"
23 #include "ixheaace_aac_constants.h"
24 #include "ixheaace_sbr_def.h"
25 #include "ixheaace_resampler.h"
26 #include "ixheaace_sbr_rom.h"
27 #include "ixheaace_error_codes.h"
28 #include "ixheaac_error_standards.h"
29
ia_enhaacplus_enc_init_iir_resampler(ixheaace_iir21_resampler * pstr_resampler,WORD32 ratio,ixheaace_resampler_table * pstr_resampler_table)30 IA_ERRORCODE ia_enhaacplus_enc_init_iir_resampler(ixheaace_iir21_resampler *pstr_resampler,
31 WORD32 ratio,
32 ixheaace_resampler_table *pstr_resampler_table)
33
34 {
35 struct ixheaace_iir_params const *current_set = NULL;
36 IA_ERRORCODE error = IA_NO_ERROR;
37
38 if (pstr_resampler == NULL) {
39 return IA_EXHEAACE_INIT_FATAL_RESAMPLER_INIT_FAILED;
40 }
41
42 memset(pstr_resampler->iir_filter.ring_buf_1, 0,
43 (LEN_RING_BUF * sizeof(pstr_resampler->iir_filter.ring_buf_1[0])));
44 memset(pstr_resampler->iir_filter.ring_buf_2, 0,
45 (LEN_RING_BUF * sizeof(pstr_resampler->iir_filter.ring_buf_2[0])));
46
47 current_set = &(pstr_resampler_table->iir_param_set);
48
49 pstr_resampler->iir_filter.ptr_coeff_iir_den = current_set->coeff_iir_den;
50 pstr_resampler->iir_filter.ptr_coeff_iir_num = current_set->coeff_iir_num;
51 pstr_resampler->iir_filter.max = current_set->max;
52 pstr_resampler->delay = current_set->delay;
53 pstr_resampler->ratio = ratio;
54 pstr_resampler->pending = ratio - 1;
55
56 return error;
57 }
58 IA_ERRORCODE
ia_enhaacplus_enc_init_iir_sos_resampler(ixheaace_iir_sos_resampler * pstr_resampler,WORD32 ratio,ixheaace_resampler_sos_table * pstr_resampler_table)59 ia_enhaacplus_enc_init_iir_sos_resampler(ixheaace_iir_sos_resampler *pstr_resampler, WORD32 ratio,
60 ixheaace_resampler_sos_table *pstr_resampler_table)
61
62 {
63 struct ixheaace_iir_params_sos const *current_set = NULL;
64 IA_ERRORCODE error = IA_NO_ERROR;
65
66 if (pstr_resampler == NULL) {
67 error = IA_EXHEAACE_INIT_FATAL_USAC_RESAMPLER_INIT_FAILED;
68 return error;
69 }
70
71 memset(pstr_resampler->iir_filter.ring_buf_sos_1, 0,
72 (LEN_RING_BUF_SOS_1 * sizeof(pstr_resampler->iir_filter.ring_buf_sos_1[0])));
73 memset(pstr_resampler->iir_filter.ring_buf_sos_2, 0,
74 (LEN_RING_BUF_SOS_2 * sizeof(pstr_resampler->iir_filter.ring_buf_sos_2[0])));
75
76 current_set = &(pstr_resampler_table->iir_param_set_sos);
77
78 pstr_resampler->iir_filter.ptr_coeff_iir_den = ¤t_set->coeff_iir_sos_den[0][0];
79 pstr_resampler->iir_filter.ptr_coeff_iir_num = ¤t_set->coeff_iir_sos_num[0][0];
80 pstr_resampler->ratio = ratio;
81 pstr_resampler->pending = ratio - 1;
82 pstr_resampler->iir_filter.gain_sos = current_set->gain_sos;
83 pstr_resampler->delay = current_set->delay;
84
85 return error;
86 }