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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/bidi_queue.h"
#include "l2cap/cid.h"
#include "l2cap/classic/fixed_channel.h"
#include "l2cap/internal/channel_impl.h"
#include "l2cap/l2cap_packets.h"
#include "os/handler.h"
#include "os/log.h"
namespace bluetooth {
namespace l2cap {
namespace classic {
namespace internal {
class Link;
class FixedChannelImpl : public l2cap::internal::ChannelImpl {
public:
FixedChannelImpl(Cid cid, Link* link, os::Handler* l2cap_handler);
FixedChannelImpl(const FixedChannelImpl&) = delete;
FixedChannelImpl& operator=(const FixedChannelImpl&) = delete;
virtual ~FixedChannelImpl() = default;
hci::Address GetDevice() const {
return device_.GetAddress();
}
virtual void RegisterOnCloseCallback(os::Handler* user_handler, FixedChannel::OnCloseCallback on_close_callback);
virtual void Acquire();
virtual void Release();
virtual bool IsAcquired() const {
return acquired_;
}
virtual void OnClosed(hci::ErrorCode status);
virtual std::string ToString() {
std::ostringstream ss;
ss << "Device " << device_ << " Cid 0x" << std::hex << cid_;
return ss.str();
}
common::BidiQueueEnd<packet::BasePacketBuilder, packet::PacketView<packet::kLittleEndian>>* GetQueueUpEnd() {
return channel_queue_.GetUpEnd();
}
common::BidiQueueEnd<packet::PacketView<packet::kLittleEndian>, packet::BasePacketBuilder>* GetQueueDownEnd() {
return channel_queue_.GetDownEnd();
}
Cid GetCid() const {
return cid_;
}
Cid GetRemoteCid() const {
return cid_;
}
private:
// Constructor states
// For logging purpose only
const Cid cid_;
// For logging purpose only
const hci::AddressWithType device_;
// Needed to handle Acquire() and Release()
Link* link_;
os::Handler* l2cap_handler_;
// User supported states
os::Handler* user_handler_ = nullptr;
FixedChannel::OnCloseCallback on_close_callback_{};
// Internal states
bool acquired_ = false;
bool closed_ = false;
hci::ErrorCode close_reason_ = hci::ErrorCode::SUCCESS;
static constexpr size_t kChannelQueueSize = 10;
common::BidiQueue<packet::PacketView<packet::kLittleEndian>, packet::BasePacketBuilder> channel_queue_{
kChannelQueueSize};
};
} // namespace internal
} // namespace classic
} // namespace l2cap
} // namespace bluetooth
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