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#ifndef IMPD_DRC_MULTI_BAND_H
21#define IMPD_DRC_MULTI_BAND_H
22
23#define DRC_SUBBAND_COUNT_WITH_AUDIO_CODEC_FILTERBANK_MAX \
24  FILTER_BANK_PARAMETER_COUNT
25
26#ifdef __cplusplus
27extern "C" {
28#endif
29
30typedef struct {
31  FLOAT32 overlap_weight[AUDIO_CODEC_SUBBAND_COUNT_MAX];
32} ia_band_overlap_params_struct;
33
34typedef struct {
35  ia_band_overlap_params_struct str_band_overlap_params[BAND_COUNT_MAX];
36} ia_group_overlap_params_struct;
37
38typedef struct {
39  ia_group_overlap_params_struct
40      str_group_overlap_params[CHANNEL_GROUP_COUNT_MAX];
41} ia_overlap_params_struct;
42
43WORD32
44impd_fcenter_norm_sb_init(WORD32 num_subbands, FLOAT32* fcenter_norm_subband);
45
46WORD32
47impd_generate_slope(WORD32 num_subbands, FLOAT32* fcenter_norm_subband,
48                    FLOAT32 fcross_norm_lo, FLOAT32 fcross_norm_hi,
49                    FLOAT32* response);
50
51WORD32
52impd_generate_overlap_weights(
53    WORD32 num_drc_bands, WORD32 drc_band_type,
54    ia_gain_params_struct* gain_params, WORD32 dec_subband_count,
55    ia_group_overlap_params_struct* pstr_group_overlap_params);
56
57WORD32
58impd_init_overlap_weight(
59    ia_uni_drc_coeffs_struct* str_p_loc_drc_coefficients_uni_drc,
60    ia_drc_instructions_struct* str_drc_instruction_str,
61    WORD32 sub_band_domain_mode, ia_overlap_params_struct* pstr_overlap_params);
62
63#ifdef __cplusplus
64}
65#endif
66#endif
67