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67 lines
2.4 KiB
67 lines
2.4 KiB
/*
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* Copyright (C) 2016 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.audio.effect@2.0;
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import android.hardware.audio.common@2.0;
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import IEffect;
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interface IEffectsFactory {
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/**
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* Returns descriptors of different effects in all loaded libraries.
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*
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* @return retval operation completion status.
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* @return result list of effect descriptors.
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*/
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getAllDescriptors() generates(Result retval, vec<EffectDescriptor> result);
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/**
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* Returns a descriptor of a particular effect.
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*
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* @return retval operation completion status.
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* @return result effect descriptor.
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*/
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getDescriptor(Uuid uid) generates(Result retval, EffectDescriptor result);
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/**
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* Creates an effect engine of the specified type. To release the effect
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* engine, it is necessary to release references to the returned effect
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* object.
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*
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* @param uid effect uuid.
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* @param session audio session to which this effect instance will be
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* attached. All effects created with the same session ID
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* are connected in series and process the same signal
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* stream.
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* @param ioHandle identifies the output or input stream this effect is
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* directed to in audio HAL.
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* @return retval operation completion status.
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* @return result the interface for the created effect.
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* @return effectId the unique ID of the effect to be used with
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* IStream::addEffect and IStream::removeEffect methods.
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*/
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createEffect(Uuid uid, AudioSession session, AudioIoHandle ioHandle)
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generates (Result retval, IEffect result, uint64_t effectId);
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/**
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* Dumps information about effects into the provided file descriptor.
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* This is used for the dumpsys facility.
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*
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* @param fd dump file descriptor.
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*/
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debugDump(handle fd);
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};
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