mirror of
https://github.com/kidfromjupiter/nearby.git
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aaronyujiaze
6b88d326df
This CL implements the scanning and advertising of Nearby BLE Medium Fast Advertisement with hardcoded advertisement data PiperOrigin-RevId: 446806137
129 lines
5.1 KiB
C++
129 lines
5.1 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 PLATFORM_API_PLATFORM_H_
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#define PLATFORM_API_PLATFORM_H_
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#include <cstdint>
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#include <memory>
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#include <string>
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#include "absl/strings/string_view.h"
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#include "internal/platform/implementation/atomic_boolean.h"
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#include "internal/platform/implementation/atomic_reference.h"
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#include "internal/platform/implementation/ble.h"
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#include "internal/platform/implementation/ble_v2.h"
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#include "internal/platform/implementation/bluetooth_adapter.h"
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#include "internal/platform/implementation/bluetooth_classic.h"
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#include "internal/platform/implementation/condition_variable.h"
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#include "internal/platform/implementation/count_down_latch.h"
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#include "internal/platform/implementation/crypto.h"
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#include "internal/platform/implementation/input_file.h"
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#include "internal/platform/implementation/log_message.h"
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#include "internal/platform/implementation/mutex.h"
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#include "internal/platform/implementation/output_file.h"
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#include "internal/platform/implementation/scheduled_executor.h"
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#include "internal/platform/implementation/server_sync.h"
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#include "internal/platform/implementation/settable_future.h"
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#include "internal/platform/implementation/submittable_executor.h"
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#include "internal/platform/implementation/system_clock.h"
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#ifndef NO_WEBRTC
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#include "internal/platform/implementation/webrtc.h"
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#endif
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#include "internal/platform/implementation/wifi.h"
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#include "internal/platform/implementation/wifi_hotspot.h"
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#include "internal/platform/implementation/wifi_lan.h"
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#include "internal/platform/os_name.h"
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#include "internal/platform/payload_id.h"
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namespace location {
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namespace nearby {
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namespace api {
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// API rework notes:
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// https://docs.google.com/spreadsheets/d/1erZNkX7pX8s5jWTHdxgjntxTMor3BGiY2H_fC_ldtoQ/edit#gid=381357998
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class ImplementationPlatform {
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public:
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// General platform support:
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// - atomic variables (boolean, and any other copyable type)
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// - synchronization primitives:
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// - mutex (regular, and recursive)
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// - condition variable (must work with regular mutex only)
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// - Future<T> : to synchronize on Callable<T> scheduled to execute.
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// - CountDownLatch : to ensure at least N threads are waiting.
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// - file I/O
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// - Logging
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static std::string GetDownloadPath(std::string& parent_folder,
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std::string& file_name);
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static OSName GetCurrentOS();
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// Atomics:
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// =======
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// Atomic boolean: special case. Uses native platform atomics.
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// Does not use locking.
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// Does not use dynamic memory allocations in operations.
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static std::unique_ptr<AtomicBoolean> CreateAtomicBoolean(bool initial_value);
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// Supports enums and integers up to 32-bit.
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// Does not use locking, if platform supports 32-bit atimics natively.
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// Does not use dynamic memory allocations in operations.
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static std::unique_ptr<AtomicUint32> CreateAtomicUint32(std::uint32_t value);
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static std::unique_ptr<CountDownLatch> CreateCountDownLatch(
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std::int32_t count);
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static std::unique_ptr<Mutex> CreateMutex(Mutex::Mode mode);
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static std::unique_ptr<ConditionVariable> CreateConditionVariable(
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Mutex* mutex);
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static std::unique_ptr<InputFile> CreateInputFile(PayloadId, std::int64_t);
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static std::unique_ptr<InputFile> CreateInputFile(absl::string_view, size_t);
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static std::unique_ptr<OutputFile> CreateOutputFile(PayloadId);
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static std::unique_ptr<OutputFile> CreateOutputFile(absl::string_view);
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static std::unique_ptr<LogMessage> CreateLogMessage(
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const char* file, int line, LogMessage::Severity severity);
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// Java-like Executors
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static std::unique_ptr<SubmittableExecutor> CreateSingleThreadExecutor();
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static std::unique_ptr<SubmittableExecutor> CreateMultiThreadExecutor(
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std::int32_t max_concurrency);
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static std::unique_ptr<ScheduledExecutor> CreateScheduledExecutor();
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// Protocol implementations, domain-specific support
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static std::unique_ptr<BluetoothAdapter> CreateBluetoothAdapter();
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static std::unique_ptr<BluetoothClassicMedium> CreateBluetoothClassicMedium(
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BluetoothAdapter&);
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static std::unique_ptr<BleMedium> CreateBleMedium(BluetoothAdapter&);
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static std::unique_ptr<api::ble_v2::BleMedium> CreateBleV2Medium(
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api::BluetoothAdapter&);
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static std::unique_ptr<ServerSyncMedium> CreateServerSyncMedium();
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static std::unique_ptr<WifiMedium> CreateWifiMedium();
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static std::unique_ptr<WifiLanMedium> CreateWifiLanMedium();
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static std::unique_ptr<WifiHotspotMedium> CreateWifiHotspotMedium();
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#ifndef NO_WEBRTC
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static std::unique_ptr<WebRtcMedium> CreateWebRtcMedium();
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#endif
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};
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} // namespace api
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} // namespace nearby
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} // namespace location
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#endif // PLATFORM_API_PLATFORM_H_
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