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 <system/audio_effects/effect_agc.h> 21 22/** 23 * returns true if this interface is not associated with an initialized AGC effect 24 */ 25static inline bool NO_AUTOGAIN(IAndroidAutomaticGainControl* v) { 26 return (v->mAGCEffect == 0); 27} 28 29SLresult 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 48SLresult 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 69static const struct SLAndroidAutomaticGainControlItf_ IAndroidAutomaticGainControl_Itf = { 70 IAndroidAutomaticGainControl_SetEnabled, 71 IAndroidAutomaticGainControl_IsEnabled 72}; 73 74void 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 84void IAndroidAutomaticGainControl_deinit(void *self) 85{ 86 IAndroidAutomaticGainControl *thiz = (IAndroidAutomaticGainControl *) self; 87 // explicit destructor 88 thiz->mAGCEffect.~sp(); 89} 90 91bool 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