mirror of
https://github.com/kidfromjupiter/nearby.git
synced 2026-09-14 22:56:12 -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
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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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// https://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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#ifndef THIRD_PARTY_NEARBY_PRESENCE_IMPLEMENTATION_MEDIUMS_BLE_H_
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#define THIRD_PARTY_NEARBY_PRESENCE_IMPLEMENTATION_MEDIUMS_BLE_H_
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#include <memory>
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#include <string>
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#include <utility>
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#include "internal/platform/ble_v2.h"
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#include "internal/platform/bluetooth_adapter.h"
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#include "internal/platform/uuid.h"
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#include "presence/implementation/mediums/advertisement_data.h"
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#include "presence/power_mode.h"
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#include "presence/scan_request.h"
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namespace nearby {
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namespace presence {
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/** Presence advertisement service data uuid. */
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ABSL_CONST_INIT const nearby::Uuid kPresenceServiceUuid(0x0000fcf100001000,
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0x800000805f9b34fb);
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/*
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* This Ble class utilizes platform/ble_v2 BleV2Medium, provides ble functions
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* for presence logic layer to invoke.
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* This class would have states like if ble is available or not, if it's doing
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* broadcast/scan.
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*/
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class Ble {
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public:
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using TxPowerLevel = ::nearby::api::ble_v2::TxPowerLevel;
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using ScanningSession = ::nearby::api::ble_v2::BleMedium::ScanningSession;
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using ScanningCallback = ::nearby::api::ble_v2::BleMedium::ScanningCallback;
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using AdvertiseParameters = ::nearby::api::ble_v2::AdvertiseParameters;
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using AdvertisingSession =
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::nearby::api::ble_v2::BleMedium::AdvertisingSession;
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using AdvertisingCallback =
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::nearby::api::ble_v2::BleMedium::AdvertisingCallback;
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using BleAdvertisementData = ::nearby::api::ble_v2::BleAdvertisementData;
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using BleMedium = ::nearby::api::ble_v2::BleMedium;
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explicit Ble(nearby::BluetoothAdapter& bluetooth_adapter)
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: medium_(bluetooth_adapter) {}
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bool IsAvailable() const { return medium_.IsValid(); }
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// Starts broadcasting NP advertisement in `payload`. The caller should use
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// the returned `AdvertisingSession` to stop the broadcast.
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std::unique_ptr<AdvertisingSession> StartAdvertising(
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const AdvertisementData& payload, PowerMode power_mode,
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AdvertisingCallback callback) {
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BleAdvertisementData advertising_data = {
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.is_extended_advertisement = payload.is_extended_advertisement};
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advertising_data.service_data.insert(
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{kPresenceServiceUuid, nearby::ByteArray(payload.content)});
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AdvertiseParameters advertise_set_parameters = {
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.tx_power_level = ConvertPowerModeToPowerLevel(power_mode),
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.is_connectable = true,
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};
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return medium_.StartAdvertising(advertising_data, advertise_set_parameters,
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std::move(callback));
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}
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// Starts scanning for NP advertisements. The caller should use the returned
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// `ScanningSession` to stop scanning.
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std::unique_ptr<ScanningSession> StartScanning(ScanRequest scan_request,
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ScanningCallback callback) {
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return medium_.StartScanning(
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kPresenceServiceUuid,
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ConvertPowerModeToPowerLevel(scan_request.power_mode),
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std::move(callback));
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}
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// Provides access to platform implementation. It's used in tests.
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BleMedium* GetImpl() const { return medium_.GetImpl(); }
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private:
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TxPowerLevel ConvertPowerModeToPowerLevel(PowerMode power_mode) {
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switch (power_mode) {
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case PowerMode::kNoPower:
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return TxPowerLevel::kUnknown;
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case PowerMode::kLowPower:
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return TxPowerLevel::kLow;
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case PowerMode::kBalanced:
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return TxPowerLevel::kMedium;
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case PowerMode::kLowLatency:
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return TxPowerLevel::kHigh;
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}
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return TxPowerLevel::kUnknown;
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}
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nearby::BleV2Medium medium_;
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};
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} // namespace presence
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} // namespace nearby
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#endif // THIRD_PARTY_NEARBY_PRESENCE_IMPLEMENTATION_MEDIUMS_BLE_H_
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