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/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* Automatic Gain Control implementation */
#include "sles_allinclusive.h"
#include <media/EffectsFactoryApi.h>
#include <audio_effects/effect_agc.h>
/**
* returns true if this interface is not associated with an initialized AGC effect
*/
static inline bool NO_AUTOGAIN(IAndroidAutomaticGainControl* v) {
return (v->mAGCEffect == 0);
}
SLresult IAndroidAutomaticGainControl_SetEnabled(SLAndroidAutomaticGainControlItf self, SLboolean enabled)
{
SL_ENTER_INTERFACE
IAndroidAutomaticGainControl *thiz = (IAndroidAutomaticGainControl *) self;
interface_lock_exclusive(thiz);
thiz->mEnabled = (SLboolean) enabled;
if (NO_AUTOGAIN(thiz)) {
result = SL_RESULT_CONTROL_LOST;
} else {
android::status_t status = thiz->mAGCEffect->setEnabled((bool) thiz->mEnabled);
result = android_fx_statusToResult(status);
}
interface_unlock_exclusive(thiz);
SL_LEAVE_INTERFACE
}
SLresult IAndroidAutomaticGainControl_IsEnabled(SLAndroidAutomaticGainControlItf self, SLboolean *pEnabled)
{
SL_ENTER_INTERFACE
if (NULL == pEnabled) {
result = SL_RESULT_PARAMETER_INVALID;
} else {
IAndroidAutomaticGainControl *thiz = (IAndroidAutomaticGainControl *) self;
interface_lock_exclusive(thiz);
SLboolean enabled = thiz->mEnabled;
if (NO_AUTOGAIN(thiz)) {
result = SL_RESULT_CONTROL_LOST;
} else {
*pEnabled = (SLboolean) thiz->mAGCEffect->getEnabled();
result = SL_RESULT_SUCCESS;
}
interface_unlock_exclusive(thiz);
}
SL_LEAVE_INTERFACE
}
SLresult IAndroidAutomaticGainControl_IsAvailable(SLAndroidAutomaticGainControlItf self,
SLboolean *pEnabled)
{
SL_ENTER_INTERFACE
*pEnabled = false;
uint32_t numEffects = 0;
int ret = EffectQueryNumberEffects(&numEffects);
if (ret != 0) {
ALOGE("IAndroidAutomaticGainControl_IsAvailable() error %d querying number of effects",
ret);
result = SL_RESULT_FEATURE_UNSUPPORTED;
} else {
ALOGV("EffectQueryNumberEffects() numEffects=%d", numEffects);
effect_descriptor_t fxDesc;
for (uint32_t i = 0 ; i < numEffects ; i++) {
if (EffectQueryEffect(i, &fxDesc) == 0) {
ALOGV("effect %d is called %s", i, fxDesc.name);
if (memcmp(&fxDesc.type, SL_IID_ANDROIDAUTOMATICGAINCONTROL,
sizeof(effect_uuid_t)) == 0) {
ALOGI("found effect \"%s\" from %s", fxDesc.name, fxDesc.implementor);
*pEnabled = true;
break;
}
}
}
result = SL_RESULT_SUCCESS;
}
SL_LEAVE_INTERFACE
}
static const struct SLAndroidAutomaticGainControlItf_ IAndroidAutomaticGainControl_Itf = {
IAndroidAutomaticGainControl_SetEnabled,
IAndroidAutomaticGainControl_IsEnabled,
IAndroidAutomaticGainControl_IsAvailable
};
void IAndroidAutomaticGainControl_init(void *self)
{
IAndroidAutomaticGainControl *thiz = (IAndroidAutomaticGainControl *) self;
thiz->mItf = &IAndroidAutomaticGainControl_Itf;
thiz->mEnabled = SL_BOOLEAN_FALSE;
memset(&thiz->mAGCDescriptor, 0, sizeof(effect_descriptor_t));
// placement new (explicit constructor)
(void) new (&thiz->mAGCEffect) android::sp<android::AudioEffect>();
}
void IAndroidAutomaticGainControl_deinit(void *self)
{
IAndroidAutomaticGainControl *thiz = (IAndroidAutomaticGainControl *) self;
// explicit destructor
thiz->mAGCEffect.~sp();
}
bool IAndroidAutomaticGainControl_Expose(void *self)
{
IAndroidAutomaticGainControl *thiz = (IAndroidAutomaticGainControl *) self;
if (!android_fx_initEffectDescriptor(SL_IID_ANDROIDAUTOMATICGAINCONTROL,
&thiz->mAGCDescriptor)) {
SL_LOGE("Automatic Gain Control initialization failed.");
return false;
}
return true;
}
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