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_ns.h>
     21 /**
     22  * returns true if this interface is not associated with an initialized Noise Suppression effect
     23  */
     24 static inline bool NO_NOISESUPPRESS(IAndroidNoiseSuppression* v) {
     25     return (v->mNSEffect == 0);
     26 }
     27 
     28 SLresult IAndroidNoiseSuppression_SetEnabled(SLAndroidNoiseSuppressionItf self, SLboolean enabled)
     29 {
     30     SL_ENTER_INTERFACE
     31 
     32     IAndroidNoiseSuppression *thiz = (IAndroidNoiseSuppression *) self;
     33     interface_lock_exclusive(thiz);
     34     thiz->mEnabled = (SLboolean) enabled;
     35     if (NO_NOISESUPPRESS(thiz)) {
     36         result = SL_RESULT_CONTROL_LOST;
     37     } else {
     38         android::status_t status = thiz->mNSEffect->setEnabled((bool) thiz->mEnabled);
     39         result = android_fx_statusToResult(status);
     40     }
     41     interface_unlock_exclusive(thiz);
     42 
     43     SL_LEAVE_INTERFACE
     44 }
     45 
     46 SLresult IAndroidNoiseSuppression_IsEnabled(SLAndroidNoiseSuppressionItf self, SLboolean *pEnabled)
     47 {
     48     SL_ENTER_INTERFACE
     49 
     50     if (NULL == pEnabled) {
     51         result = SL_RESULT_PARAMETER_INVALID;
     52     } else {
     53         IAndroidNoiseSuppression *thiz = (IAndroidNoiseSuppression *) self;
     54         interface_lock_exclusive(thiz);
     55         if (NO_NOISESUPPRESS(thiz)) {
     56             result = SL_RESULT_CONTROL_LOST;
     57         } else {
     58             *pEnabled = (SLboolean) thiz->mNSEffect->getEnabled();
     59             result = SL_RESULT_SUCCESS;
     60         }
     61         interface_unlock_exclusive(thiz);
     62     }
     63     SL_LEAVE_INTERFACE
     64 }
     65 
     66 static const struct SLAndroidNoiseSuppressionItf_ IAndroidNoiseSuppression_Itf = {
     67     IAndroidNoiseSuppression_SetEnabled,
     68     IAndroidNoiseSuppression_IsEnabled
     69 };
     70 
     71 void IAndroidNoiseSuppression_init(void *self)
     72 {
     73     IAndroidNoiseSuppression *thiz = (IAndroidNoiseSuppression *) self;
     74     thiz->mItf = &IAndroidNoiseSuppression_Itf;
     75     thiz->mEnabled = SL_BOOLEAN_FALSE;
     76     memset(&thiz->mNSDescriptor, 0, sizeof(effect_descriptor_t));
     77     // placement new (explicit constructor)
     78     (void) new (&thiz->mNSEffect) android::sp<android::AudioEffect>();
     79 }
     80 
     81 void IAndroidNoiseSuppression_deinit(void *self)
     82 {
     83     IAndroidNoiseSuppression *thiz = (IAndroidNoiseSuppression *) self;
     84     // explicit destructor
     85     thiz->mNSEffect.~sp();
     86 }
     87 
     88 bool IAndroidNoiseSuppression_Expose(void *self)
     89 {
     90     IAndroidNoiseSuppression *thiz = (IAndroidNoiseSuppression *) self;
     91     if (!android_fx_initEffectDescriptor(SL_IID_ANDROIDNOISESUPPRESSION, &thiz->mNSDescriptor)) {
     92         SL_LOGE("Noise Suppression initialization failed.");
     93         return false;
     94     }
     95     return true;
     96 }
     97