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79 lines
2.7 KiB
C++
79 lines
2.7 KiB
C++
// Copyright 2022 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_FASTPAIR_INTERNAL_BLE_BLE_H_
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#define THIRD_PARTY_NEARBY_FASTPAIR_INTERNAL_BLE_BLE_H_
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#include <string>
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#include "fastpair/internal/mediums/bluetooth_radio.h"
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#include "internal/platform/ble.h"
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#include "internal/platform/bluetooth_adapter.h"
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#include "internal/platform/mutex.h"
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namespace nearby {
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namespace fastpair {
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// Provides the operations that can be performed on the Bluetooth Low Energy
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// (BLE) medium.
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class Ble {
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public:
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using DiscoveredPeripheralCallback = BleMedium::DiscoveredPeripheralCallback;
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explicit Ble(BluetoothRadio& bluetooth_radio);
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Ble(Ble&&) = delete;
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Ble& operator=(Ble&&) = delete;
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~Ble() = default;
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// Returns true, if Ble communications are supported by a platform.
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bool IsAvailable() const ABSL_LOCKS_EXCLUDED(mutex_);
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// Enables Ble scanning mode. Will report any discoverable peripherals in
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// range through a callback. Returns true, if scanning mode was enabled,
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// false otherwise.
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bool StartScanning(const std::string& service_id,
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const std::string& fast_pair_service_uuid,
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DiscoveredPeripheralCallback callback)
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ABSL_LOCKS_EXCLUDED(mutex_);
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// Disables Ble discovery mode.
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bool StopScanning(const std::string& service_id) ABSL_LOCKS_EXCLUDED(mutex_);
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// Return true if Ble is currenlty scanning.
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bool IsScanning() ABSL_LOCKS_EXCLUDED(mutex_);
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// Return BleMedium
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BleMedium& GetMedium() { return medium_; }
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private:
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// Same as IsAvailable(), but must be called with mutex_ held.
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bool IsAvailableLocked() const ABSL_EXCLUSIVE_LOCKS_REQUIRED(mutex_);
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// Same as IsDiscovering(), but must be called with mutex_ held.
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bool IsScanningLocked() ABSL_EXCLUSIVE_LOCKS_REQUIRED(mutex_);
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mutable Mutex mutex_;
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DiscoveredPeripheralCallback discovered_peripheral_callback_;
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BluetoothRadio& radio_ ABSL_GUARDED_BY(mutex_);
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BluetoothAdapter& adapter_ ABSL_GUARDED_BY(mutex_){
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radio_.GetBluetoothAdapter()};
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BleMedium medium_ ABSL_GUARDED_BY(mutex_){adapter_};
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bool is_scanning_ = false;
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};
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} // namespace fastpair
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} // namespace nearby
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#endif // THIRD_PARTY_NEARBY_FASTPAIR_INTERNAL_BLE_BLE_H_
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