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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.
*/
#include <unordered_map>
#include "hci/acl_manager/le_acl_connection.h"
#include "l2cap/cid.h"
#include "l2cap/le/internal/fixed_channel_impl.h"
#include "l2cap/le/internal/link.h"
#include "os/handler.h"
#include "os/log.h"
namespace bluetooth {
namespace l2cap {
namespace le {
namespace internal {
hci::Role FixedChannelImpl::GetRole() const {
return link_->GetRole();
}
hci::acl_manager::LeAclConnection* FixedChannelImpl::GetAclConnection() const {
return link_->GetAclConnection();
}
FixedChannelImpl::FixedChannelImpl(Cid cid, Link* link, os::Handler* l2cap_handler)
: cid_(cid), device_(link->GetDevice()), link_(link), l2cap_handler_(l2cap_handler) {
ASSERT_LOG(cid_ >= kFirstFixedChannel && cid_ <= kLastFixedChannel, "Invalid cid: %d", cid_);
ASSERT(link_ != nullptr);
ASSERT(l2cap_handler_ != nullptr);
}
void FixedChannelImpl::RegisterOnCloseCallback(os::Handler* user_handler,
FixedChannel::OnCloseCallback on_close_callback) {
ASSERT_LOG(user_handler_ == nullptr, "OnCloseCallback can only be registered once");
// If channel is already closed, call the callback immediately without saving it
if (closed_) {
user_handler->Post(common::BindOnce(std::move(on_close_callback), close_reason_));
return;
}
user_handler_ = user_handler;
on_close_callback_ = std::move(on_close_callback);
}
void FixedChannelImpl::OnClosed(hci::ErrorCode status) {
ASSERT_LOG(!closed_, "Device %s Cid 0x%x closed twice, old status 0x%x, new status 0x%x", device_.ToString().c_str(),
cid_, static_cast<int>(close_reason_), static_cast<int>(status));
closed_ = true;
close_reason_ = status;
acquired_ = false;
link_ = nullptr;
l2cap_handler_ = nullptr;
if (user_handler_ == nullptr) {
return;
}
// On close callback can only be called once
user_handler_->Post(common::BindOnce(std::move(on_close_callback_), status));
user_handler_ = nullptr;
on_close_callback_.Reset();
}
void FixedChannelImpl::Acquire() {
ASSERT_LOG(user_handler_ != nullptr, "Must register OnCloseCallback before calling any methods");
if (closed_) {
LOG_WARN("%s is already closed", ToString().c_str());
ASSERT(!acquired_);
return;
}
if (acquired_) {
LOG_INFO("%s was already acquired", ToString().c_str());
return;
}
acquired_ = true;
link_->RefreshRefCount();
}
void FixedChannelImpl::Release() {
ASSERT_LOG(user_handler_ != nullptr, "Must register OnCloseCallback before calling any methods");
if (closed_) {
LOG_WARN("%s is already closed", ToString().c_str());
ASSERT(!acquired_);
return;
}
if (!acquired_) {
LOG_INFO("%s was already released", ToString().c_str());
return;
}
acquired_ = false;
link_->RefreshRefCount();
}
Cid FixedChannelImpl::GetCid() const {
return cid_;
}
Cid FixedChannelImpl::GetRemoteCid() const {
return cid_;
}
LinkOptions* FixedChannelImpl::GetLinkOptions() {
return link_->GetLinkOptions();
}
} // namespace internal
} // namespace le
} // namespace l2cap
} // namespace bluetooth
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