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/******************************************************************************
*
* Copyright 2019 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.
*
******************************************************************************/
#pragma once
#include "common/callback.h"
#include "os/queue.h"
namespace bluetooth {
namespace common {
template <typename TENQUEUE, typename TDEQUEUE>
class BidiQueueEnd : public ::bluetooth::os::IQueueEnqueue<TENQUEUE>, public ::bluetooth::os::IQueueDequeue<TDEQUEUE> {
public:
using EnqueueCallback = Callback<std::unique_ptr<TENQUEUE>()>;
using DequeueCallback = Callback<void()>;
BidiQueueEnd(::bluetooth::os::IQueueEnqueue<TENQUEUE>* tx, ::bluetooth::os::IQueueDequeue<TDEQUEUE>* rx)
: tx_(tx), rx_(rx) {}
void RegisterEnqueue(::bluetooth::os::Handler* handler, EnqueueCallback callback) override {
tx_->RegisterEnqueue(handler, callback);
}
void UnregisterEnqueue() override {
tx_->UnregisterEnqueue();
}
void RegisterDequeue(::bluetooth::os::Handler* handler, DequeueCallback callback) override {
rx_->RegisterDequeue(handler, callback);
}
void UnregisterDequeue() override {
rx_->UnregisterDequeue();
}
std::unique_ptr<TDEQUEUE> TryDequeue() override {
return rx_->TryDequeue();
}
private:
::bluetooth::os::IQueueEnqueue<TENQUEUE>* tx_;
::bluetooth::os::IQueueDequeue<TDEQUEUE>* rx_;
};
template <typename TUP, typename TDOWN>
class BidiQueue {
public:
explicit BidiQueue(size_t capacity)
: up_queue_(capacity),
down_queue_(capacity),
up_end_(&down_queue_, &up_queue_),
down_end_(&up_queue_, &down_queue_) {}
BidiQueueEnd<TDOWN, TUP>* GetUpEnd() {
return &up_end_;
}
BidiQueueEnd<TUP, TDOWN>* GetDownEnd() {
return &down_end_;
}
private:
::bluetooth::os::Queue<TUP> up_queue_;
::bluetooth::os::Queue<TDOWN> down_queue_;
BidiQueueEnd<TDOWN, TUP> up_end_;
BidiQueueEnd<TUP, TDOWN> down_end_;
};
} // namespace common
} // namespace bluetooth
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