| /* |
| * 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 <binder/IInterface.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 |
| }; |
| |
| class IProducerListener : public ProducerListener, public IInterface |
| { |
| public: |
| DECLARE_META_INTERFACE(ProducerListener) |
| }; |
| |
| class BnProducerListener : public BnInterface<IProducerListener> |
| { |
| public: |
| virtual status_t onTransact(uint32_t code, const Parcel& data, |
| Parcel* reply, uint32_t flags = 0); |
| }; |
| |
| class DummyProducerListener : public BnProducerListener |
| { |
| public: |
| virtual ~DummyProducerListener(); |
| virtual void onBufferReleased() {} |
| }; |
| |
| } // namespace android |
| |
| #endif |