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43 lines
1.6 KiB
43 lines
1.6 KiB
4 months ago
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/*
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* Copyright 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.hardware.soundtrigger@2.2;
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import @2.0::SoundModelHandle;
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import @2.1::ISoundTriggerHw;
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/**
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* SoundTrigger HAL interface. Used for hardware recognition of hotwords
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* and other sounds.
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*/
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interface ISoundTriggerHw extends @2.1::ISoundTriggerHw {
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/**
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* Get the state of a given model.
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* The model state is returned asynchronously as a RecognitionEvent via
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* the callback that was registered in StartRecognition().
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* @param modelHandle The handle of the sound model whose state is being
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* queried.
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* @return retval Operation completion status: 0 in case of success,
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* -ENOSYS in case of invalid model handle,
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* -ENOMEM in case of memory allocation failure,
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* -ENODEV in case of initialization error,
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* -EINVAL in case where a recognition event is already
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* being processed.
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*/
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getModelState(SoundModelHandle modelHandle) generates (int32_t retval);
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};
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