Home | History | Annotate | Download | only in itf 
      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  */
     25 static inline bool NO_AUTOGAIN(IAndroidAutomaticGainControl* v) {
     26     return (v->mAGCEffect == 0);
     27 }
     28 
     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 
     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 
     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 
     84 void IAndroidAutomaticGainControl_deinit(void *self)
     85 {
     86     IAndroidAutomaticGainControl *thiz = (IAndroidAutomaticGainControl *) self;
     87     // explicit destructor
     88     thiz->mAGCEffect.~sp();
     89 }
     90 
     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