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 */ 27 static inline bool NO_AUTOGAIN(IAndroidAutomaticGainControl* v) { 28 return (v->mAGCEffect == 0); 29 } 30 31 SLresult IAndroidAutomaticGainControl_SetEnabled(SLAndroidAutomaticGainControlItf self, SLboolean enabled) 32 { 33 SL_ENTER_INTERFACE 34 35 IAndroidAutomaticGainControl *thiz = (IAndroidAutomaticGainControl *) self; 36 interface_lock_exclusive(thiz); 37 thiz->mEnabled = (SLboolean) enabled; 38 if (NO_AUTOGAIN(thiz)) { 39 result = SL_RESULT_CONTROL_LOST; 40 } else { 41 android::status_t status = thiz->mAGCEffect->setEnabled((bool) thiz->mEnabled); 42 result = android_fx_statusToResult(status); 43 } 44 interface_unlock_exclusive(thiz); 45 46 SL_LEAVE_INTERFACE 47 } 48 49 SLresult IAndroidAutomaticGainControl_IsEnabled(SLAndroidAutomaticGainControlItf self, 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 SLboolean enabled = thiz->mEnabled; 59 if (NO_AUTOGAIN(thiz)) { 60 result = SL_RESULT_CONTROL_LOST; 61 } else { 62 *pEnabled = (SLboolean) thiz->mAGCEffect->getEnabled(); 63 result = SL_RESULT_SUCCESS; 64 } 65 interface_unlock_exclusive(thiz); 66 } 67 SL_LEAVE_INTERFACE 68 } 69 70 SLresult IAndroidAutomaticGainControl_IsAvailable(SLAndroidAutomaticGainControlItf self, 71 SLboolean *pEnabled) 72 { 73 SL_ENTER_INTERFACE 74 75 *pEnabled = false; 76 77 uint32_t numEffects = 0; 78 int ret = EffectQueryNumberEffects(&numEffects); 79 if (ret != 0) { 80 ALOGE("IAndroidAutomaticGainControl_IsAvailable() error %d querying number of effects", 81 ret); 82 result = SL_RESULT_FEATURE_UNSUPPORTED; 83 } else { 84 ALOGV("EffectQueryNumberEffects() numEffects=%d", numEffects); 85 86 effect_descriptor_t fxDesc; 87 for (uint32_t i = 0 ; i < numEffects ; i++) { 88 if (EffectQueryEffect(i, &fxDesc) == 0) { 89 ALOGV("effect %d is called %s", i, fxDesc.name); 90 if (memcmp(&fxDesc.type, SL_IID_ANDROIDAUTOMATICGAINCONTROL, 91 sizeof(effect_uuid_t)) == 0) { 92 ALOGI("found effect \"%s\" from %s", fxDesc.name, fxDesc.implementor); 93 *pEnabled = true; 94 break; 95 } 96 } 97 } 98 result = SL_RESULT_SUCCESS; 99 } 100 SL_LEAVE_INTERFACE 101 } 102 103 static const struct SLAndroidAutomaticGainControlItf_ IAndroidAutomaticGainControl_Itf = { 104 IAndroidAutomaticGainControl_SetEnabled, 105 IAndroidAutomaticGainControl_IsEnabled, 106 IAndroidAutomaticGainControl_IsAvailable 107 }; 108 109 void IAndroidAutomaticGainControl_init(void *self) 110 { 111 IAndroidAutomaticGainControl *thiz = (IAndroidAutomaticGainControl *) self; 112 thiz->mItf = &IAndroidAutomaticGainControl_Itf; 113 thiz->mEnabled = SL_BOOLEAN_FALSE; 114 memset(&thiz->mAGCDescriptor, 0, sizeof(effect_descriptor_t)); 115 // placement new (explicit constructor) 116 (void) new (&thiz->mAGCEffect) android::sp<android::AudioEffect>(); 117 } 118 119 void IAndroidAutomaticGainControl_deinit(void *self) 120 { 121 IAndroidAutomaticGainControl *thiz = (IAndroidAutomaticGainControl *) self; 122 // explicit destructor 123 thiz->mAGCEffect.~sp(); 124 } 125 126 bool IAndroidAutomaticGainControl_Expose(void *self) 127 { 128 IAndroidAutomaticGainControl *thiz = (IAndroidAutomaticGainControl *) self; 129 if (!android_fx_initEffectDescriptor(SL_IID_ANDROIDAUTOMATICGAINCONTROL, 130 &thiz->mAGCDescriptor)) { 131 SL_LOGE("Automatic Gain Control initialization failed."); 132 return false; 133 } 134 return true; 135 } 136