mirror of
https://github.com/kidfromjupiter/nearby.git
synced 2026-09-15 07:06:11 -04:00
Janusz Sobczak
a29be214a3
Replaces a bunch of std::function uses with absl::AnyInvocable. PiperOrigin-RevId: 502960326
112 lines
4.2 KiB
C++
112 lines
4.2 KiB
C++
// Copyright 2020 Google LLC
|
|
//
|
|
// 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
|
|
//
|
|
// https://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.
|
|
|
|
#ifndef THIRD_PARTY_NEARBY_PRESENCE_IMPLEMENTATION_MEDIUMS_BLE_H_
|
|
#define THIRD_PARTY_NEARBY_PRESENCE_IMPLEMENTATION_MEDIUMS_BLE_H_
|
|
|
|
#include <memory>
|
|
#include <string>
|
|
#include <utility>
|
|
|
|
#include "internal/platform/ble_v2.h"
|
|
#include "internal/platform/bluetooth_adapter.h"
|
|
#include "internal/platform/uuid.h"
|
|
#include "presence/implementation/mediums/advertisement_data.h"
|
|
#include "presence/power_mode.h"
|
|
#include "presence/scan_request.h"
|
|
|
|
namespace nearby {
|
|
namespace presence {
|
|
|
|
/** Presence advertisement service data uuid. */
|
|
ABSL_CONST_INIT const nearby::Uuid kPresenceServiceUuid(0x0000fcf100001000,
|
|
0x800000805f9b34fb);
|
|
|
|
/*
|
|
* This Ble class utilizes platform/ble_v2 BleV2Medium, provides ble functions
|
|
* for presence logic layer to invoke.
|
|
* This class would have states like if ble is available or not, if it's doing
|
|
* broadcast/scan.
|
|
*/
|
|
class Ble {
|
|
public:
|
|
using TxPowerLevel = ::nearby::api::ble_v2::TxPowerLevel;
|
|
using ScanningSession = ::nearby::api::ble_v2::BleMedium::ScanningSession;
|
|
using ScanningCallback = ::nearby::api::ble_v2::BleMedium::ScanningCallback;
|
|
using AdvertiseParameters = ::nearby::api::ble_v2::AdvertiseParameters;
|
|
using AdvertisingSession =
|
|
::nearby::api::ble_v2::BleMedium::AdvertisingSession;
|
|
using AdvertisingCallback =
|
|
::nearby::api::ble_v2::BleMedium::AdvertisingCallback;
|
|
using BleAdvertisementData = ::nearby::api::ble_v2::BleAdvertisementData;
|
|
using BleMedium = ::nearby::api::ble_v2::BleMedium;
|
|
|
|
explicit Ble(nearby::BluetoothAdapter& bluetooth_adapter)
|
|
: medium_(bluetooth_adapter) {}
|
|
|
|
bool IsAvailable() const { return medium_.IsValid(); }
|
|
|
|
// Starts broadcasting NP advertisement in `payload`. The caller should use
|
|
// the returned `AdvertisingSession` to stop the broadcast.
|
|
std::unique_ptr<AdvertisingSession> StartAdvertising(
|
|
const AdvertisementData& payload, PowerMode power_mode,
|
|
AdvertisingCallback callback) {
|
|
BleAdvertisementData advertising_data = {
|
|
.is_extended_advertisement = payload.is_extended_advertisement};
|
|
advertising_data.service_data.insert(
|
|
{kPresenceServiceUuid, nearby::ByteArray(payload.content)});
|
|
AdvertiseParameters advertise_set_parameters = {
|
|
.tx_power_level = ConvertPowerModeToPowerLevel(power_mode),
|
|
.is_connectable = true,
|
|
};
|
|
return medium_.StartAdvertising(advertising_data, advertise_set_parameters,
|
|
std::move(callback));
|
|
}
|
|
|
|
// Starts scanning for NP advertisements. The caller should use the returned
|
|
// `ScanningSession` to stop scanning.
|
|
std::unique_ptr<ScanningSession> StartScanning(ScanRequest scan_request,
|
|
ScanningCallback callback) {
|
|
return medium_.StartScanning(
|
|
kPresenceServiceUuid,
|
|
ConvertPowerModeToPowerLevel(scan_request.power_mode),
|
|
std::move(callback));
|
|
}
|
|
|
|
// Provides access to platform implementation. It's used in tests.
|
|
BleMedium* GetImpl() const { return medium_.GetImpl(); }
|
|
|
|
private:
|
|
TxPowerLevel ConvertPowerModeToPowerLevel(PowerMode power_mode) {
|
|
switch (power_mode) {
|
|
case PowerMode::kNoPower:
|
|
return TxPowerLevel::kUnknown;
|
|
case PowerMode::kLowPower:
|
|
return TxPowerLevel::kLow;
|
|
case PowerMode::kBalanced:
|
|
return TxPowerLevel::kMedium;
|
|
case PowerMode::kLowLatency:
|
|
return TxPowerLevel::kHigh;
|
|
}
|
|
return TxPowerLevel::kUnknown;
|
|
}
|
|
|
|
nearby::BleV2Medium medium_;
|
|
};
|
|
|
|
} // namespace presence
|
|
} // namespace nearby
|
|
|
|
#endif // THIRD_PARTY_NEARBY_PRESENCE_IMPLEMENTATION_MEDIUMS_BLE_H_
|