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87 lines
3.1 KiB
87 lines
3.1 KiB
/*
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* Copyright 2020 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 <cstdint>
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#include "hci/acl_manager/le_acl_connection.h"
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#include "hci/hci_packets.h"
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#include "os/handler.h"
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namespace bluetooth {
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namespace l2cap {
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namespace le {
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namespace internal {
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class Link;
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}
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/**
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* Proxy for L2CAP user to get some link layer properties (connection handle, role), and set link layer options
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* (connection parameter update, set PHY). Only few special L2CAP users need to use it, including Security Manager,
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* Hearing Aid Profile, HID Profile, and Java API.
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* Note: Setting link layer options applies to the LINK, not single CHANNEL.
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*/
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class LinkOptions {
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public:
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/**
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* Get LL Role. Most applications should NOT know its LL role.
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*/
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hci::Role GetRole() const;
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/**
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* Get ACL Handle. Most applications should NOT know its ACL handle.
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*/
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uint16_t GetHandle() const;
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/**
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* Return Local address used for initiation of this connection.
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*/
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hci::AddressWithType GetLocalAddress() const;
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/**
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* Update the LE link layer connection parameters.
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* Depending on the link role and supported features, may directly send HCI command to update link, or send L2CAP
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* request to advise the remote. The updated connection parameters are still determined by controller. It's a link
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* layer change for performance tuning, and no host layer change should be observable by user.
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* Parameters are defined in Core spec HCI 7.8.18.
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* @return true iff the request is sent to controller through HCI or remote through L2CAP
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* (Use it only if you know what you are doing!)
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*/
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bool UpdateConnectionParameter(uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency,
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uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length);
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/**
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* Set PHY preference. The PHY is determined by the controller.
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* No host layer change should be observable by user.
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* Parameters are defined in Core spec HCI 7.8.49.
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* @return true iff the request is sent to controller through HCI
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* (Use it only if you know what you are doing!)
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*/
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bool SetPhy(uint8_t all_phys, uint8_t tx_phys, uint8_t rx_phys, uint16_t phy_options);
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LinkOptions(hci::acl_manager::LeAclConnection* acl_connection, internal::Link* link, os::Handler* l2cap_handler);
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private:
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hci::acl_manager::LeAclConnection* acl_connection_ = nullptr;
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internal::Link* link_ = nullptr;
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os::Handler* l2cap_handler_ = nullptr;
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};
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} // namespace le
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} // namespace l2cap
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} // namespace bluetooth
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