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 /* Automatic Gain Control implementation */
18 #include "sles_allinclusive.h"
19
20 #include <audio_effects/effect_agc.h>
21
22 /**
23 * returns true if this interface is not associated with an initialized AGC effect
24 */
NO_AUTOGAIN(IAndroidAutomaticGainControl * v)25 static inline bool NO_AUTOGAIN(IAndroidAutomaticGainControl* v) {
26 return (v->mAGCEffect == 0);
27 }
28
IAndroidAutomaticGainControl_SetEnabled(SLAndroidAutomaticGainControlItf self,SLboolean enabled)29 SLresult IAndroidAutomaticGainControl_SetEnabled(SLAndroidAutomaticGainControlItf self,
30 SLboolean enabled)
31 {
32 SL_ENTER_INTERFACE
33
34 IAndroidAutomaticGainControl *thiz = (IAndroidAutomaticGainControl *) self;
35 interface_lock_exclusive(thiz);
36 thiz->mEnabled = (SLboolean) enabled;
37 if (NO_AUTOGAIN(thiz)) {
38 result = SL_RESULT_CONTROL_LOST;
39 } else {
40 android::status_t status = thiz->mAGCEffect->setEnabled((bool) thiz->mEnabled);
41 result = android_fx_statusToResult(status);
42 }
43 interface_unlock_exclusive(thiz);
44
45 SL_LEAVE_INTERFACE
46 }
47
IAndroidAutomaticGainControl_IsEnabled(SLAndroidAutomaticGainControlItf self,SLboolean * pEnabled)48 SLresult IAndroidAutomaticGainControl_IsEnabled(SLAndroidAutomaticGainControlItf self,
49 SLboolean *pEnabled)
50 {
51 SL_ENTER_INTERFACE
52
53 if (NULL == pEnabled) {
54 result = SL_RESULT_PARAMETER_INVALID;
55 } else {
56 IAndroidAutomaticGainControl *thiz = (IAndroidAutomaticGainControl *) self;
57 interface_lock_exclusive(thiz);
58 if (NO_AUTOGAIN(thiz)) {
59 result = SL_RESULT_CONTROL_LOST;
60 } else {
61 *pEnabled = (SLboolean) thiz->mAGCEffect->getEnabled();
62 result = SL_RESULT_SUCCESS;
63 }
64 interface_unlock_exclusive(thiz);
65 }
66 SL_LEAVE_INTERFACE
67 }
68
69 static const struct SLAndroidAutomaticGainControlItf_ IAndroidAutomaticGainControl_Itf = {
70 IAndroidAutomaticGainControl_SetEnabled,
71 IAndroidAutomaticGainControl_IsEnabled
72 };
73
IAndroidAutomaticGainControl_init(void * self)74 void IAndroidAutomaticGainControl_init(void *self)
75 {
76 IAndroidAutomaticGainControl *thiz = (IAndroidAutomaticGainControl *) self;
77 thiz->mItf = &IAndroidAutomaticGainControl_Itf;
78 thiz->mEnabled = SL_BOOLEAN_FALSE;
79 memset(&thiz->mAGCDescriptor, 0, sizeof(effect_descriptor_t));
80 // placement new (explicit constructor)
81 (void) new (&thiz->mAGCEffect) android::sp<android::AudioEffect>();
82 }
83
IAndroidAutomaticGainControl_deinit(void * self)84 void IAndroidAutomaticGainControl_deinit(void *self)
85 {
86 IAndroidAutomaticGainControl *thiz = (IAndroidAutomaticGainControl *) self;
87 // explicit destructor
88 thiz->mAGCEffect.~sp();
89 }
90
IAndroidAutomaticGainControl_Expose(void * self)91 bool IAndroidAutomaticGainControl_Expose(void *self)
92 {
93 IAndroidAutomaticGainControl *thiz = (IAndroidAutomaticGainControl *) self;
94 if (!android_fx_initEffectDescriptor(SL_IID_ANDROIDAUTOMATICGAINCONTROL,
95 &thiz->mAGCDescriptor)) {
96 SL_LOGE("Automatic Gain Control initialization failed.");
97 return false;
98 }
99 return true;
100 }
101