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/*
* Copyright 2021 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.
*/
package android.hardware.soundtrigger3;
import android.media.soundtrigger.PhraseRecognitionEvent;
import android.media.soundtrigger.RecognitionEvent;
/**
* SoundTrigger HAL per-model Callback interface.
*/
@VintfStability
interface ISoundTriggerHwCallback {
/**
* Callback method called by the HAL when a model has been unloaded at the HAL implementation's
* discretion.
* This event may only be delivered when the model state is 'stopped'.
* This event is NOT sent as part of an unload sequence initiated by the client.
*
* @param model The model handle.
*/
void modelUnloaded(in int model);
/**
* Callback method called by the HAL when the sound recognition triggers for a key phrase sound
* model.
* This event may only be delivered when the model state is 'started'.
* Unless the status of the event is RecognitionStatus.FORCED, this event indicates that the
* state of this model has become 'stopped'.
*
* @param event A RecognitionEvent structure containing detailed results of the recognition
* triggered
*/
void phraseRecognitionCallback(in int model, in PhraseRecognitionEvent event);
/**
* Callback method called by the HAL when the sound recognition triggers.
* This event may only be delivered when the model state is 'started'.
* Unless the status of the event is RecognitionStatus.FORCED, this event indicates that the
* state of this model has become 'stopped'.
*
* @param event A RecognitionEvent structure containing detailed results of the recognition
* triggered
*/
void recognitionCallback(in int model, in RecognitionEvent event);
}
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