1 /*
2  * Copyright (C) 2016 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef ANDROID_EFFECT_AEC_CORE_H_
18 #define ANDROID_EFFECT_AEC_CORE_H_
19 
20 #include <system/audio_effect.h>
21 
22 #if __cplusplus
23 extern "C" {
24 #endif
25 
26 // The AEC type UUID is not defined by OpenSL ES and has been generated from
27 // http://www.itu.int/ITU-T/asn1/uuid.html
28 static const effect_uuid_t FX_IID_AEC_ =
29     { 0x7b491460, 0x8d4d, 0x11e0, 0xbd61, { 0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b } };
30 const effect_uuid_t * const FX_IID_AEC = &FX_IID_AEC_;
31 
32 typedef enum
33 {
34     AEC_PARAM_ECHO_DELAY,           // echo delay in microseconds
35     AEC_PARAM_PROPERTIES,
36 #ifndef WEBRTC_LEGACY
37     AEC_PARAM_MOBILE_MODE,
38 #endif
39 } t_aec_params;
40 
41 //t_equalizer_settings groups all current aec settings for backup and restore.
42 typedef struct s_aec_settings {
43     uint32_t echoDelay;
44 } t_aec_settings;
45 
46 #if __cplusplus
47 }  // extern "C"
48 #endif
49 
50 
51 #endif /*ANDROID_EFFECT_AEC_CORE_H_*/
52