1 /*
2 * Copyright (C) 2014 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 /* Acoustic Echo Cancellation implementation */
18 #include "sles_allinclusive.h"
19
20 #include <system/audio_effects/effect_aec.h>
21
22 /**
23 * returns true if this interface is not associated with an initialized AEC effect
24 */
NO_ECHOCANCEL(IAndroidAcousticEchoCancellation * v)25 static inline bool NO_ECHOCANCEL(IAndroidAcousticEchoCancellation* v) {
26 return (v->mAECEffect == 0);
27 }
28
IAndroidAcousticEchoCancellation_SetEnabled(SLAndroidAcousticEchoCancellationItf self,SLboolean enabled)29 static SLresult IAndroidAcousticEchoCancellation_SetEnabled(
30 SLAndroidAcousticEchoCancellationItf self,
31 SLboolean enabled)
32 {
33 SL_ENTER_INTERFACE
34
35 IAndroidAcousticEchoCancellation *thiz = (IAndroidAcousticEchoCancellation *) self;
36 interface_lock_exclusive(thiz);
37 thiz->mEnabled = (SLboolean) enabled;
38 if (NO_ECHOCANCEL(thiz)) {
39 result = SL_RESULT_CONTROL_LOST;
40 } else {
41 android::status_t status = thiz->mAECEffect->setEnabled((bool) thiz->mEnabled);
42 result = android_fx_statusToResult(status);
43 }
44 interface_unlock_exclusive(thiz);
45
46 SL_LEAVE_INTERFACE
47 }
48
IAndroidAcousticEchoCancellation_IsEnabled(SLAndroidAcousticEchoCancellationItf self,SLboolean * pEnabled)49 static SLresult IAndroidAcousticEchoCancellation_IsEnabled(
50 SLAndroidAcousticEchoCancellationItf self,
51 SLboolean *pEnabled)
52 {
53 SL_ENTER_INTERFACE
54
55 if (NULL == pEnabled) {
56 result = SL_RESULT_PARAMETER_INVALID;
57 } else {
58 IAndroidAcousticEchoCancellation *thiz = (IAndroidAcousticEchoCancellation *) self;
59 interface_lock_exclusive(thiz);
60 if (NO_ECHOCANCEL(thiz)) {
61 result = SL_RESULT_CONTROL_LOST;
62 } else {
63 *pEnabled = (SLboolean) thiz->mAECEffect->getEnabled();
64 result = SL_RESULT_SUCCESS;
65 }
66 interface_unlock_exclusive(thiz);
67 }
68
69 SL_LEAVE_INTERFACE
70 }
71
72 static const struct SLAndroidAcousticEchoCancellationItf_ IAndroidAcousticEchoCancellation_Itf = {
73 IAndroidAcousticEchoCancellation_SetEnabled,
74 IAndroidAcousticEchoCancellation_IsEnabled
75 };
76
IAndroidAcousticEchoCancellation_init(void * self)77 void IAndroidAcousticEchoCancellation_init(void *self)
78 {
79 IAndroidAcousticEchoCancellation *thiz = (IAndroidAcousticEchoCancellation *) self;
80 thiz->mItf = &IAndroidAcousticEchoCancellation_Itf;
81 thiz->mEnabled = SL_BOOLEAN_FALSE;
82 memset(&thiz->mAECDescriptor, 0, sizeof(effect_descriptor_t));
83 // placement new (explicit constructor)
84 (void) new (&thiz->mAECEffect) android::sp<android::AudioEffect>();
85 }
86
IAndroidAcousticEchoCancellation_deinit(void * self)87 void IAndroidAcousticEchoCancellation_deinit(void *self)
88 {
89 IAndroidAcousticEchoCancellation *thiz = (IAndroidAcousticEchoCancellation *) self;
90 // explicit destructor
91 thiz->mAECEffect.~sp();
92 }
93
IAndroidAcousticEchoCancellation_Expose(void * self)94 bool IAndroidAcousticEchoCancellation_Expose(void *self)
95 {
96 IAndroidAcousticEchoCancellation *thiz = (IAndroidAcousticEchoCancellation *) self;
97 if (!android_fx_initEffectDescriptor(SL_IID_ANDROIDACOUSTICECHOCANCELLATION,
98 &thiz->mAECDescriptor)) {
99 SL_LOGE("Acoustic Echo Cancellation initialization failed.");
100 return false;
101 }
102 return true;
103 }
104