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/*
* Copyright 2021 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 <base/logging.h>
#include <string.h>
#include <queue>
#include <vector>
#include "ble_scanner.h"
#include "ble_scanner_hci_interface.h"
#include "bt_target.h"
#include "btm_int.h"
#include "btm_int_types.h"
#include "device/include/controller.h"
#include "osi/include/alarm.h"
#include "stack/btm/btm_ble_int.h"
#include "stack_config.h"
std::mutex lock1;
namespace {
class BleScanningManagerImpl;
BleScanningManager* instance;
base::WeakPtr<BleScanningManagerImpl> instance_weakptr;
static void status_callback(uint8_t status) {
VLOG(1) << __func__ << " Received status_cb with status:" << status;
}
class BleScanningManagerImpl
: public BleScanningManager,
public BleScannerHciInterface::ScanEventObserver {
public:
BleScanningManagerImpl(BleScannerHciInterface* interface)
: hci_interface(interface), weak_factory_(this) {}
~BleScanningManagerImpl() {}
void PeriodicScanStart(uint8_t options, uint8_t set_id, uint8_t adv_addr_type,
const RawAddress& adv_addr, uint16_t skip_num,
uint16_t sync_timeout,
uint8_t sync_cte_type) override {
GetHciInterface()->PeriodicScanStart(options, set_id, adv_addr_type,
adv_addr, skip_num, sync_timeout,
sync_cte_type);
}
void PeriodicScanCancelStart() override {
GetHciInterface()->PeriodicScanCancelStart(base::Bind(&status_callback));
}
void PeriodicScanTerminate(uint16_t sync_handle) override {
GetHciInterface()->PeriodicScanTerminate(sync_handle,
base::Bind(&status_callback));
}
void PeriodicAdvSyncTransfer(
const RawAddress& bd_addr, uint16_t service_data, uint16_t sync_handle,
BleScannerHciInterface::handle_cb command_complete) override {
GetHciInterface()->PeriodicAdvSyncTransfer(bd_addr, service_data,
sync_handle, command_complete);
}
void PeriodicAdvSetInfoTransfer(const RawAddress& bd_addr,
uint16_t service_data, uint8_t adv_handle,
handle_cb command_complete) override {
GetHciInterface()->PeriodicAdvSetInfoTransfer(bd_addr, service_data,
adv_handle, command_complete);
}
void SetPeriodicAdvSyncTransferParams(const RawAddress& bd_addr, uint8_t mode,
uint16_t skip, uint16_t sync_timeout,
uint8_t cte_type, bool set_defaults,
status_cb command_complete) override {
GetHciInterface()->SetPeriodicAdvSyncTransferParams(
bd_addr, mode, skip, sync_timeout, cte_type, set_defaults,
command_complete);
}
void OnPeriodicScanResult(uint16_t sync_handle, uint8_t tx_power, int8_t rssi,
uint8_t cte_type, uint8_t pkt_data_status,
uint8_t pkt_data_len,
const uint8_t* pkt_data) override {
btm_ble_periodic_adv_report(sync_handle, tx_power, rssi, cte_type,
pkt_data_status, pkt_data_len, pkt_data);
}
void OnPeriodicScanEstablished(uint8_t status, uint16_t sync_handle,
uint8_t set_id, uint8_t adv_addr_type,
const RawAddress& adv_addr, uint8_t adv_phy,
uint16_t adv_interval,
uint8_t adv_clock_accuracy) override {
btm_ble_periodic_adv_sync_established(status, sync_handle, set_id,
adv_addr_type, adv_addr, adv_phy,
adv_interval, adv_clock_accuracy);
}
void OnPeriodicScanLost(uint16_t sync_handle) override {
btm_ble_periodic_adv_sync_lost(sync_handle);
}
base::WeakPtr<BleScanningManagerImpl> GetWeakPtr() {
return weak_factory_.GetWeakPtr();
}
private:
BleScannerHciInterface* GetHciInterface() { return hci_interface; }
BleScannerHciInterface* hci_interface = nullptr;
// Member variables should appear before the WeakPtrFactory, to ensure
// that any WeakPtrs are invalidated before its members
// variable's destructors are executed, rendering them invalid.
base::WeakPtrFactory<BleScanningManagerImpl> weak_factory_;
};
} // namespace
void BleScanningManager::Initialize(BleScannerHciInterface* interface) {
instance = new BleScanningManagerImpl(interface);
instance_weakptr = ((BleScanningManagerImpl*)instance)->GetWeakPtr();
}
bool BleScanningManager::IsInitialized() { return instance; }
base::WeakPtr<BleScanningManager> BleScanningManager::Get() {
return instance_weakptr;
};
void BleScanningManager::CleanUp() {
delete instance;
instance = nullptr;
};
/**
* This function initializes the scanning manager.
**/
void btm_ble_scanner_init() {
BleScannerHciInterface::Initialize();
if (BleScannerHciInterface::Get()) {
BleScanningManager::Initialize(BleScannerHciInterface::Get());
} else {
VLOG(1) << __func__ << " BleScannerHciInterface::Get() returns null";
}
if ((BleScannerHciInterface::Get()) && (BleScanningManager::Get())) {
BleScannerHciInterface::Get()->SetScanEventObserver(
(BleScanningManagerImpl*)BleScanningManager::Get().get());
} else {
VLOG(1) << __func__ << " BleScannerHciInterface or BleScanningManager is null";
}
}
/*******************************************************************************
*
* Function btm_ble_scanner_cleanup
*
* Description This function cleans up scanner control block.
*
* Parameters
* Returns void
*
******************************************************************************/
void btm_ble_scanner_cleanup(void) {
std::lock_guard<std::mutex> lock(lock1);
BleScanningManager::CleanUp();
BleScannerHciInterface::CleanUp();
}
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