97 lines
3.3 KiB
C++
97 lines
3.3 KiB
C++
/*
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* Copyright (C) 2022 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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#pragma once
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#include <memory>
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#include <aidl/android/hardware/media/bufferpool2/BnConnection.h>
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#include <bufferpool2/BufferPoolTypes.h>
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namespace aidl::android::hardware::media::bufferpool2::implementation {
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struct Accessor;
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struct Connection : public BnConnection {
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// Methods from ::aidl::android::hardware::media::bufferpool2::IConnection.
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::ndk::ScopedAStatus fetch(const std::vector<::aidl::android::hardware::media::bufferpool2::IConnection::FetchInfo>& in_fetchInfos, std::vector<::aidl::android::hardware::media::bufferpool2::IConnection::FetchResult>* _aidl_return) override;
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// Methods from ::aidl::android::hardware::media::bufferpool2::IConnection.
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::ndk::ScopedAStatus sync() override;
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/**
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* Invalidates all buffers which are active and/or are ready to be recycled.
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*/
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BufferPoolStatus flush();
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/**
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* Allocates a buffer using the specified parameters. Recycles a buffer if
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* it is possible. The returned buffer can be transferred to other remote
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* clients(Connection).
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*
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* @param params allocation parameters.
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* @param bufferId Id of the allocated buffer.
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* @param handle native handle of the allocated buffer.
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*
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* @return OK if a buffer is successfully allocated.
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* NO_MEMORY when there is no memory.
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* CRITICAL_ERROR otherwise.
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*/
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BufferPoolStatus allocate(const std::vector<uint8_t> ¶ms,
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BufferId *bufferId, const native_handle_t **handle);
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/**
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* Processes pending buffer status messages and performs periodic cache cleaning
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* from bufferpool.
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*
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* @param clearCache if clearCache is true, bufferpool frees all buffers
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* waiting to be recycled.
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*/
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void cleanUp(bool clearCache);
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/** Destructs a connection. */
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~Connection();
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/** Creates a connection. */
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Connection();
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/**
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* Initializes with the specified buffer pool and the connection id.
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* The connection id should be unique in the whole system.
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*
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* @param accessor the specified buffer pool.
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* @param connectionId Id.
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*/
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void initialize(const std::shared_ptr<Accessor> &accessor, ConnectionId connectionId);
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enum : uint32_t {
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SYNC_BUFFERID = UINT32_MAX,
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};
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private:
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bool mInitialized;
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std::shared_ptr<Accessor> mAccessor;
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ConnectionId mConnectionId;
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bool fetch(
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uint64_t transactionId,
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uint32_t bufferId,
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std::vector<::aidl::android::hardware::media::bufferpool2::IConnection::FetchResult>
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*result);
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};
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} // namespace aidl::android::hardware::media::bufferpool2::implementation
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