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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_PROCESS_AUDIO_H
21 #define IMPD_DRC_PROCESS_AUDIO_H
22 
23 #ifdef __cplusplus
24 extern "C" {
25 #endif
26 
27 typedef struct {
28   WORD32 multiband_audio_sig_count;
29   WORD32 frame_size;
30   FLOAT32** non_interleaved_audio;
31 } ia_audio_band_buffer_struct;
32 
33 typedef struct {
34   WORD32 audio_num_chan;
35   WORD32 frame_size;
36   WORD32 audio_sub_band_count;
37   WORD32 audio_sub_band_frame_size;
38   WORD32 audio_delay_samples;
39   WORD32 audio_delay_sub_band_samples;
40   FLOAT32** audio_io_buffer_delayed;
41   FLOAT32** audio_buffer_delayed_real;
42   FLOAT32** audio_buffer_delayed_imag;
43   FLOAT32** audio_in_out_buf;
44   FLOAT32** audio_real_buff;
45   FLOAT32** audio_imag_buff;
46 } ia_audio_in_out_buf;
47 
48 WORD32
49 impd_apply_gains_subband(ia_drc_instructions_struct* pstr_drc_instruction_arr,
50                          const WORD32 drc_instructions_index,
51                          ia_drc_params_struct* ia_drc_params_struct,
52                          ia_gain_buffer_struct* pstr_gain_buf,
53                          ia_overlap_params_struct* pstr_overlap_params,
54                          FLOAT32* deinterleaved_audio_delayed_re[],
55                          FLOAT32* deinterleaved_audio_delayed_im[],
56                          FLOAT32* deinterleaved_audio_re[],
57                          FLOAT32* deinterleaved_audio_im[]);
58 
59 WORD32
60 impd_filter_banks_process(ia_drc_instructions_struct* pstr_drc_instruction_arr,
61                           const WORD32 drc_instructions_index,
62                           ia_drc_params_struct* ia_drc_params_struct,
63                           FLOAT32* audio_io_buf[],
64                           ia_audio_band_buffer_struct* audio_band_buffer,
65                           ia_filter_banks_struct* ia_filter_banks_struct,
66                           const WORD32 passThru);
67 
68 WORD32
69 impd_store_audio_io_buffer_time(FLOAT32* audio_in_out_buf[],
70                                 ia_audio_in_out_buf* audio_io_buf_internal);
71 
72 WORD32
73 impd_store_audio_io_buffer_freq(FLOAT32* audio_real_buff[],
74                                 FLOAT32* audio_imag_buff[],
75                                 ia_audio_in_out_buf* audio_io_buf_internal);
76 
77 WORD32
78 impd_retrieve_audio_io_buffer_time(FLOAT32* audio_in_out_buf[],
79                                    ia_audio_in_out_buf* audio_io_buf_internal);
80 
81 WORD32
82 impd_retrieve_audio_buffer_freq(FLOAT32* audio_real_buff[],
83                                 FLOAT32* audio_imag_buff[],
84                                 ia_audio_in_out_buf* audio_io_buf_internal);
85 
86 WORD32
87 impd_advance_audio_io_buffer_time(ia_audio_in_out_buf* audio_io_buf_internal);
88 
89 WORD32
90 impd_advance_audio_buff_freq(ia_audio_in_out_buf* audio_io_buf_internal);
91 
92 #ifdef __cplusplus
93 }
94 #endif
95 #endif
96