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 <media/EffectsFactoryApi.h>
21
22 #include <audio_effects/effect_agc.h>
23
24 /**
25 * returns true if this interface is not associated with an initialized AGC effect
26 */
NO_AUTOGAIN(IAndroidAutomaticGainControl * v)27 static inline bool NO_AUTOGAIN(IAndroidAutomaticGainControl* v) {
28 return (v->mAGCEffect == 0);
29 }
30
IAndroidAutomaticGainControl_SetEnabled(SLAndroidAutomaticGainControlItf self,SLboolean enabled)31 SLresult IAndroidAutomaticGainControl_SetEnabled(SLAndroidAutomaticGainControlItf self,
32 SLboolean enabled)
33 {
34 SL_ENTER_INTERFACE
35
36 IAndroidAutomaticGainControl *thiz = (IAndroidAutomaticGainControl *) self;
37 interface_lock_exclusive(thiz);
38 thiz->mEnabled = (SLboolean) enabled;
39 if (NO_AUTOGAIN(thiz)) {
40 result = SL_RESULT_CONTROL_LOST;
41 } else {
42 android::status_t status = thiz->mAGCEffect->setEnabled((bool) thiz->mEnabled);
43 result = android_fx_statusToResult(status);
44 }
45 interface_unlock_exclusive(thiz);
46
47 SL_LEAVE_INTERFACE
48 }
49
IAndroidAutomaticGainControl_IsEnabled(SLAndroidAutomaticGainControlItf self,SLboolean * pEnabled)50 SLresult IAndroidAutomaticGainControl_IsEnabled(SLAndroidAutomaticGainControlItf self,
51 SLboolean *pEnabled)
52 {
53 SL_ENTER_INTERFACE
54
55 if (NULL == pEnabled) {
56 result = SL_RESULT_PARAMETER_INVALID;
57 } else {
58 IAndroidAutomaticGainControl *thiz = (IAndroidAutomaticGainControl *) self;
59 interface_lock_exclusive(thiz);
60 SLboolean enabled = thiz->mEnabled;
61 if (NO_AUTOGAIN(thiz)) {
62 result = SL_RESULT_CONTROL_LOST;
63 } else {
64 *pEnabled = (SLboolean) thiz->mAGCEffect->getEnabled();
65 result = SL_RESULT_SUCCESS;
66 }
67 interface_unlock_exclusive(thiz);
68 }
69 SL_LEAVE_INTERFACE
70 }
71
IAndroidAutomaticGainControl_IsAvailable(SLAndroidAutomaticGainControlItf self,SLboolean * pEnabled)72 SLresult IAndroidAutomaticGainControl_IsAvailable(SLAndroidAutomaticGainControlItf self,
73 SLboolean *pEnabled)
74 {
75 SL_ENTER_INTERFACE
76
77 *pEnabled = false;
78
79 uint32_t numEffects = 0;
80 int ret = EffectQueryNumberEffects(&numEffects);
81 if (ret != 0) {
82 ALOGE("IAndroidAutomaticGainControl_IsAvailable() error %d querying number of effects",
83 ret);
84 result = SL_RESULT_FEATURE_UNSUPPORTED;
85 } else {
86 ALOGV("EffectQueryNumberEffects() numEffects=%d", numEffects);
87
88 effect_descriptor_t fxDesc;
89 for (uint32_t i = 0 ; i < numEffects ; i++) {
90 if (EffectQueryEffect(i, &fxDesc) == 0) {
91 ALOGV("effect %d is called %s", i, fxDesc.name);
92 if (memcmp(&fxDesc.type, SL_IID_ANDROIDAUTOMATICGAINCONTROL,
93 sizeof(effect_uuid_t)) == 0) {
94 ALOGI("found effect \"%s\" from %s", fxDesc.name, fxDesc.implementor);
95 *pEnabled = true;
96 break;
97 }
98 }
99 }
100 result = SL_RESULT_SUCCESS;
101 }
102 SL_LEAVE_INTERFACE
103 }
104
105 static const struct SLAndroidAutomaticGainControlItf_ IAndroidAutomaticGainControl_Itf = {
106 IAndroidAutomaticGainControl_SetEnabled,
107 IAndroidAutomaticGainControl_IsEnabled,
108 IAndroidAutomaticGainControl_IsAvailable
109 };
110
IAndroidAutomaticGainControl_init(void * self)111 void IAndroidAutomaticGainControl_init(void *self)
112 {
113 IAndroidAutomaticGainControl *thiz = (IAndroidAutomaticGainControl *) self;
114 thiz->mItf = &IAndroidAutomaticGainControl_Itf;
115 thiz->mEnabled = SL_BOOLEAN_FALSE;
116 memset(&thiz->mAGCDescriptor, 0, sizeof(effect_descriptor_t));
117 // placement new (explicit constructor)
118 (void) new (&thiz->mAGCEffect) android::sp<android::AudioEffect>();
119 }
120
IAndroidAutomaticGainControl_deinit(void * self)121 void IAndroidAutomaticGainControl_deinit(void *self)
122 {
123 IAndroidAutomaticGainControl *thiz = (IAndroidAutomaticGainControl *) self;
124 // explicit destructor
125 thiz->mAGCEffect.~sp();
126 }
127
IAndroidAutomaticGainControl_Expose(void * self)128 bool IAndroidAutomaticGainControl_Expose(void *self)
129 {
130 IAndroidAutomaticGainControl *thiz = (IAndroidAutomaticGainControl *) self;
131 if (!android_fx_initEffectDescriptor(SL_IID_ANDROIDAUTOMATICGAINCONTROL,
132 &thiz->mAGCDescriptor)) {
133 SL_LOGE("Automatic Gain Control initialization failed.");
134 return false;
135 }
136 return true;
137 }
138