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 if (NO_AUTOGAIN(thiz)) {
61 result = SL_RESULT_CONTROL_LOST;
62 } else {
63 *pEnabled = (SLboolean) thiz->mAGCEffect->getEnabled();
64 result = SL_RESULT_SUCCESS;
65 }
66 interface_unlock_exclusive(thiz);
67 }
68 SL_LEAVE_INTERFACE
69 }
70
IAndroidAutomaticGainControl_IsAvailable(SLAndroidAutomaticGainControlItf self,SLboolean * pEnabled)71 SLresult IAndroidAutomaticGainControl_IsAvailable(SLAndroidAutomaticGainControlItf self,
72 SLboolean *pEnabled)
73 {
74 SL_ENTER_INTERFACE
75
76 *pEnabled = false;
77
78 uint32_t numEffects = 0;
79 int ret = EffectQueryNumberEffects(&numEffects);
80 if (ret != 0) {
81 ALOGE("IAndroidAutomaticGainControl_IsAvailable() error %d querying number of effects",
82 ret);
83 result = SL_RESULT_FEATURE_UNSUPPORTED;
84 } else {
85 ALOGV("EffectQueryNumberEffects() numEffects=%d", numEffects);
86
87 effect_descriptor_t fxDesc;
88 for (uint32_t i = 0 ; i < numEffects ; i++) {
89 if (EffectQueryEffect(i, &fxDesc) == 0) {
90 ALOGV("effect %d is called %s", i, fxDesc.name);
91 if (memcmp(&fxDesc.type, SL_IID_ANDROIDAUTOMATICGAINCONTROL,
92 sizeof(effect_uuid_t)) == 0) {
93 ALOGI("found effect \"%s\" from %s", fxDesc.name, fxDesc.implementor);
94 *pEnabled = true;
95 break;
96 }
97 }
98 }
99 result = SL_RESULT_SUCCESS;
100 }
101 SL_LEAVE_INTERFACE
102 }
103
104 static const struct SLAndroidAutomaticGainControlItf_ IAndroidAutomaticGainControl_Itf = {
105 IAndroidAutomaticGainControl_SetEnabled,
106 IAndroidAutomaticGainControl_IsEnabled,
107 IAndroidAutomaticGainControl_IsAvailable
108 };
109
IAndroidAutomaticGainControl_init(void * self)110 void IAndroidAutomaticGainControl_init(void *self)
111 {
112 IAndroidAutomaticGainControl *thiz = (IAndroidAutomaticGainControl *) self;
113 thiz->mItf = &IAndroidAutomaticGainControl_Itf;
114 thiz->mEnabled = SL_BOOLEAN_FALSE;
115 memset(&thiz->mAGCDescriptor, 0, sizeof(effect_descriptor_t));
116 // placement new (explicit constructor)
117 (void) new (&thiz->mAGCEffect) android::sp<android::AudioEffect>();
118 }
119
IAndroidAutomaticGainControl_deinit(void * self)120 void IAndroidAutomaticGainControl_deinit(void *self)
121 {
122 IAndroidAutomaticGainControl *thiz = (IAndroidAutomaticGainControl *) self;
123 // explicit destructor
124 thiz->mAGCEffect.~sp();
125 }
126
IAndroidAutomaticGainControl_Expose(void * self)127 bool IAndroidAutomaticGainControl_Expose(void *self)
128 {
129 IAndroidAutomaticGainControl *thiz = (IAndroidAutomaticGainControl *) self;
130 if (!android_fx_initEffectDescriptor(SL_IID_ANDROIDAUTOMATICGAINCONTROL,
131 &thiz->mAGCDescriptor)) {
132 SL_LOGE("Automatic Gain Control initialization failed.");
133 return false;
134 }
135 return true;
136 }
137