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/*
* Copyright 2014 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.
*/
#ifndef ANDROID_GUI_IPRODUCERLISTENER_H
#define ANDROID_GUI_IPRODUCERLISTENER_H
#include <vector>
#include <android/hardware/graphics/bufferqueue/1.0/IProducerListener.h>
#include <android/hardware/graphics/bufferqueue/2.0/IProducerListener.h>
#include <binder/IInterface.h>
#include <hidl/HybridInterface.h>
#include <utils/RefBase.h>
namespace android {
// ProducerListener is the interface through which the BufferQueue notifies the
// producer of events that the producer may wish to react to. Because the
// producer will generally have a mutex that is locked during calls from the
// producer to the BufferQueue, these calls from the BufferQueue to the
// producer *MUST* be called only when the BufferQueue mutex is NOT locked.
class ProducerListener : public virtual RefBase
{
public:
ProducerListener() {}
virtual ~ProducerListener();
// onBufferReleased is called from IGraphicBufferConsumer::releaseBuffer to
// notify the producer that a new buffer is free and ready to be dequeued.
//
// This is called without any lock held and can be called concurrently by
// multiple threads.
virtual void onBufferReleased() = 0; // Asynchronous
virtual bool needsReleaseNotify() = 0;
// onBuffersFreed is called from IGraphicBufferConsumer::discardFreeBuffers
// to notify the producer that certain free buffers are discarded by the consumer.
virtual void onBuffersDiscarded(const std::vector<int32_t>& slots) = 0; // Asynchronous
};
#ifndef NO_BINDER
class IProducerListener : public ProducerListener, public IInterface
{
public:
using HProducerListener1 =
::android::hardware::graphics::bufferqueue::V1_0::IProducerListener;
using HProducerListener2 =
::android::hardware::graphics::bufferqueue::V2_0::IProducerListener;
DECLARE_HYBRID_META_INTERFACE(
ProducerListener,
HProducerListener1,
HProducerListener2)
};
class BnProducerListener : public BnInterface<IProducerListener>
{
public:
virtual status_t onTransact(uint32_t code, const Parcel& data,
Parcel* reply, uint32_t flags = 0);
virtual bool needsReleaseNotify();
virtual void onBuffersDiscarded(const std::vector<int32_t>& slots);
};
#else
class IProducerListener : public ProducerListener {
};
class BnProducerListener : public IProducerListener {
};
#endif
class DummyProducerListener : public BnProducerListener
{
public:
virtual ~DummyProducerListener();
virtual void onBufferReleased() {}
virtual bool needsReleaseNotify() { return false; }
};
} // namespace android
#endif
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