90 lines
2.7 KiB
C
90 lines
2.7 KiB
C
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/*
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* Copyright (C) 2007 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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#ifndef ANDROID_IAUDIOTRACK_H
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#define ANDROID_IAUDIOTRACK_H
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#include <stdint.h>
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#include <sys/types.h>
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#include <utils/RefBase.h>
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#include <utils/Errors.h>
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#include <binder/IInterface.h>
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#include <binder/IMemory.h>
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namespace android {
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// ----------------------------------------------------------------------------
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class IAudioTrack : public IInterface
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{
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public:
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DECLARE_META_INTERFACE(AudioTrack);
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/* After it's created the track is not active. Call start() to
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* make it active. If set, the callback will start being called.
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*/
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virtual status_t start() = 0;
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/* Stop a track. If set, the callback will cease being called and
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* obtainBuffer will return an error. Buffers that are already released
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* will be processed, unless flush() is called.
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*/
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virtual void stop() = 0;
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/* flush a stopped track. All pending buffers are discarded.
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* This function has no effect if the track is not stoped.
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*/
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virtual void flush() = 0;
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/* mute or unmutes this track.
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* While mutted, the callback, if set, is still called.
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*/
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virtual void mute(bool) = 0;
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/* Pause a track. If set, the callback will cease being called and
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* obtainBuffer will return an error. Buffers that are already released
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* will be processed, unless flush() is called.
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*/
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virtual void pause() = 0;
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/* Attach track auxiliary output to specified effect. Use effectId = 0
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* to detach track from effect.
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*/
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virtual status_t attachAuxEffect(int effectId) = 0;
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/* get this tracks control block */
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virtual sp<IMemory> getCblk() const = 0;
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};
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// ----------------------------------------------------------------------------
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class BnAudioTrack : public BnInterface<IAudioTrack>
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{
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public:
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virtual status_t onTransact( uint32_t code,
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const Parcel& data,
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Parcel* reply,
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uint32_t flags = 0);
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};
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// ----------------------------------------------------------------------------
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}; // namespace android
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#endif // ANDROID_IAUDIOTRACK_H
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