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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 <cstddef>
#include <cstdint>
#include <functional>
#include <mutex>
#include <unordered_map>
#include <vector>
#include "hci/hci_packets.h"
#include "stack/btm/neighbor_inquiry.h"
#include "stack/include/btm_api_types.h"
#include "types/raw_address.h"
#include "gd/common/callback.h"
#include "gd/hci/le_advertising_manager.h"
#include "gd/hci/le_scanning_manager.h"
#include "gd/neighbor/inquiry.h"
#include "gd/os/alarm.h"
//
// NOTE: limited and general constants for inquiry and discoverable are swapped
//
/* Discoverable modes */
static constexpr int kDiscoverableModeOff = 0; // BTM_NON_DISCOVERABLE
static constexpr int kLimitedDiscoverableMode = 1; // BTM_LIMITED_DISCOVERABLE
static constexpr int kGeneralDiscoverableMode = 2; // BTM_GENERAL_DISCOVERABLE
/* Inquiry modes */
static constexpr uint8_t kInquiryModeOff = 0; // BTM_INQUIRY_NONE
static constexpr uint8_t kGeneralInquiryMode = 1; // BTM_GENERAL_INQUIRY
static constexpr uint8_t kLimitedInquiryMode = 2; // BTM_LIMITED_INQUIRY
/* Connectable modes */
static constexpr int kConnectibleModeOff = 0; // BTM_NON_CONNECTABLE
static constexpr int kConnectibleModeOn = 1; // BTM_CONNECTABLE
/* Inquiry and page scan modes */
static constexpr int kStandardScanType = 0;
static constexpr int kInterlacedScanType = 1;
/* Inquiry result modes */
static constexpr int kStandardInquiryResult = 0;
static constexpr int kInquiryResultWithRssi = 1;
static constexpr int kExtendedInquiryResult = 2;
static constexpr uint8_t kPhyConnectionNone = 0x00;
static constexpr uint8_t kPhyConnectionLe1M = 0x01;
static constexpr uint8_t kPhyConnectionLe2M = 0x02;
static constexpr uint8_t kPhyConnectionLeCoded = 0x03;
using LegacyInquiryCompleteCallback =
std::function<void(tBTM_STATUS status, uint8_t inquiry_mode)>;
using DiscoverabilityState = struct {
int mode;
uint16_t interval;
uint16_t window;
};
using ConnectabilityState = DiscoverabilityState;
using HACK_ScoDisconnectCallback = std::function<void(uint16_t, uint8_t)>;
using BtmStatus = tBTM_STATUS;
namespace bluetooth {
namespace shim {
class Btm {
public:
// |handler| is used to run timer tasks and scan callbacks
Btm(os::Handler* handler, neighbor::InquiryModule* inquiry);
~Btm() = default;
// Inquiry result callbacks
void OnInquiryResult(bluetooth::hci::InquiryResultView view);
void OnInquiryResultWithRssi(bluetooth::hci::InquiryResultWithRssiView view);
void OnExtendedInquiryResult(bluetooth::hci::ExtendedInquiryResultView view);
void OnInquiryComplete(bluetooth::hci::ErrorCode status);
void SetStandardInquiryResultMode();
void SetInquiryWithRssiResultMode();
void SetExtendedInquiryResultMode();
void SetInterlacedInquiryScan();
void SetStandardInquiryScan();
bool IsInterlacedScanSupported() const;
bool StartInquiry(uint8_t mode, uint8_t duration, uint8_t max_responses,
LegacyInquiryCompleteCallback inquiry_complete_callback);
void CancelInquiry();
bool IsInquiryActive() const;
bool IsGeneralInquiryActive() const;
bool IsLimitedInquiryActive() const;
bool StartPeriodicInquiry(uint8_t mode, uint8_t duration,
uint8_t max_responses, uint16_t max_delay,
uint16_t min_delay,
tBTM_INQ_RESULTS_CB* p_results_cb);
void CancelPeriodicInquiry();
bool IsGeneralPeriodicInquiryActive() const;
bool IsLimitedPeriodicInquiryActive() const;
// Discoverability API
bool general_inquiry_active_{false};
bool limited_inquiry_active_{false};
bool general_periodic_inquiry_active_{false};
bool limited_periodic_inquiry_active_{false};
void SetClassicGeneralDiscoverability(uint16_t window, uint16_t interval);
void SetClassicLimitedDiscoverability(uint16_t window, uint16_t interval);
void SetClassicDiscoverabilityOff();
DiscoverabilityState GetClassicDiscoverabilityState() const;
void SetLeGeneralDiscoverability();
void SetLeLimitedDiscoverability();
void SetLeDiscoverabilityOff();
DiscoverabilityState GetLeDiscoverabilityState() const;
void SetClassicConnectibleOn();
void SetClassicConnectibleOff();
ConnectabilityState GetClassicConnectabilityState() const;
void SetInterlacedPageScan();
void SetStandardPageScan();
void SetLeConnectibleOn();
void SetLeConnectibleOff();
ConnectabilityState GetLeConnectabilityState() const;
bool UseLeLink(const RawAddress& raw_address) const;
// Remote device name API
BtmStatus ReadClassicRemoteDeviceName(const RawAddress& raw_address,
tBTM_CMPL_CB* callback);
BtmStatus ReadLeRemoteDeviceName(const RawAddress& raw_address,
tBTM_CMPL_CB* callback);
BtmStatus CancelAllReadRemoteDeviceName();
// Le neighbor interaction API
bluetooth::hci::AdvertiserId advertiser_id_{
hci::LeAdvertisingManager::kInvalidId};
void StartAdvertising();
void StopAdvertising();
void StartConnectability();
void StopConnectability();
void StartActiveScanning();
void StopActiveScanning();
void StartObserving();
void StopObserving();
size_t GetNumberOfAdvertisingInstances() const;
void SetObservingTimer(uint64_t duration_ms,
common::OnceCallback<void()> callback);
void CancelObservingTimer();
void SetScanningTimer(uint64_t duration_ms,
common::OnceCallback<void()> callback);
void CancelScanningTimer();
tBTM_STATUS CreateBond(const RawAddress& bd_addr, tBLE_ADDR_TYPE addr_type,
tBT_TRANSPORT transport, int device_type);
bool CancelBond(const RawAddress& bd_addr);
bool RemoveBond(const RawAddress& bd_addr);
uint16_t GetAclHandle(const RawAddress& remote_bda, tBT_TRANSPORT transport);
void Register_HACK_SetScoDisconnectCallback(
HACK_ScoDisconnectCallback callback);
static hci::AddressWithType GetAddressAndType(const RawAddress& bd_addr);
private:
os::Alarm scanning_timer_;
os::Alarm observing_timer_;
LegacyInquiryCompleteCallback legacy_inquiry_complete_callback_{};
uint8_t active_inquiry_mode_ = 0;
class ReadRemoteName {
public:
ReadRemoteName() = default;
bool Start(RawAddress raw_address);
void Stop();
bool IsInProgress() const;
std::string AddressString() const;
private:
std::mutex mutex_;
bool in_progress_ = false;
RawAddress raw_address_ = RawAddress::kEmpty;
};
ReadRemoteName le_read_remote_name_;
ReadRemoteName classic_read_remote_name_;
class ScanningCallbacks : public hci::ScanningCallback {
void OnScannerRegistered(const bluetooth::hci::Uuid app_uuid,
bluetooth::hci::ScannerId scanner_id,
ScanningStatus status);
void OnScanResult(uint16_t event_type, uint8_t address_type,
bluetooth::hci::Address address, uint8_t primary_phy,
uint8_t secondary_phy, uint8_t advertising_sid,
int8_t tx_power, int8_t rssi,
uint16_t periodic_advertising_interval,
std::vector<uint8_t> advertising_data);
void OnTrackAdvFoundLost(bluetooth::hci::AdvertisingFilterOnFoundOnLostInfo
on_found_on_lost_info);
void OnBatchScanReports(int client_if, int status, int report_format,
int num_records, std::vector<uint8_t> data);
void OnBatchScanThresholdCrossed(int client_if);
void OnTimeout();
void OnFilterEnable(bluetooth::hci::Enable enable, uint8_t status);
void OnFilterParamSetup(uint8_t available_spaces,
bluetooth::hci::ApcfAction action, uint8_t status);
void OnFilterConfigCallback(bluetooth::hci::ApcfFilterType filter_type,
uint8_t available_spaces,
bluetooth::hci::ApcfAction action,
uint8_t status);
};
ScanningCallbacks scanning_callbacks_;
// TODO(cmanton) abort if there is no classic acl link up
bool CheckClassicAclLink(const RawAddress& raw_address) { return true; }
bool CheckLeAclLink(const RawAddress& raw_address) { return true; }
void StartScanning(bool use_active_scanning);
};
} // namespace shim
} // namespace bluetooth
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