68 lines
2.0 KiB
C++
68 lines
2.0 KiB
C++
/*
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* Copyright 2014 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_GUI_IPRODUCERLISTENER_H
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#define ANDROID_GUI_IPRODUCERLISTENER_H
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#include <binder/IInterface.h>
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#include <utils/RefBase.h>
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namespace android {
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// ProducerListener is the interface through which the BufferQueue notifies the
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// producer of events that the producer may wish to react to. Because the
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// producer will generally have a mutex that is locked during calls from the
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// producer to the BufferQueue, these calls from the BufferQueue to the
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// producer *MUST* be called only when the BufferQueue mutex is NOT locked.
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class ProducerListener : public virtual RefBase
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{
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public:
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ProducerListener() {}
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virtual ~ProducerListener() {}
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// onBufferReleased is called from IGraphicBufferConsumer::releaseBuffer to
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// notify the producer that a new buffer is free and ready to be dequeued.
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//
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// This is called without any lock held and can be called concurrently by
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// multiple threads.
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virtual void onBufferReleased() = 0; // Asynchronous
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};
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class IProducerListener : public ProducerListener, public IInterface
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{
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public:
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DECLARE_META_INTERFACE(ProducerListener)
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};
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class BnProducerListener : public BnInterface<IProducerListener>
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{
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public:
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virtual status_t onTransact(uint32_t code, const Parcel& data,
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Parcel* reply, uint32_t flags = 0);
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};
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class DummyProducerListener : public BnProducerListener
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{
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public:
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virtual void onBufferReleased() {}
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};
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} // namespace android
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#endif
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