| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef DEVICE_BLUETOOTH_BLUETOOTH_TASK_MANAGER_WIN_H_ |
| #define DEVICE_BLUETOOTH_BLUETOOTH_TASK_MANAGER_WIN_H_ |
| |
| #include <string> |
| #include <vector> |
| |
| #include "base/files/file_path.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/scoped_vector.h" |
| #include "base/observer_list.h" |
| #include "base/win/scoped_handle.h" |
| #include "device/bluetooth/bluetooth_adapter.h" |
| #include "device/bluetooth/bluetooth_export.h" |
| |
| namespace base { |
| |
| class SequencedTaskRunner; |
| class SequencedWorkerPool; |
| |
| } // namespace base |
| |
| namespace device { |
| |
| // Manages the blocking Bluetooth tasks using |SequencedWorkerPool|. It runs |
| // bluetooth tasks using |SequencedWorkerPool| and informs its observers of |
| // bluetooth adapter state changes and any other bluetooth device inquiry |
| // result. |
| // |
| // It delegates the blocking Windows API calls to |bluetooth_task_runner_|'s |
| // message loop, and receives responses via methods like OnAdapterStateChanged |
| // posted to UI thread. |
| class DEVICE_BLUETOOTH_EXPORT BluetoothTaskManagerWin |
| : public base::RefCountedThreadSafe<BluetoothTaskManagerWin> { |
| public: |
| struct DEVICE_BLUETOOTH_EXPORT AdapterState { |
| AdapterState(); |
| ~AdapterState(); |
| std::string name; |
| std::string address; |
| bool powered; |
| }; |
| |
| struct DEVICE_BLUETOOTH_EXPORT ServiceRecordState { |
| ServiceRecordState(); |
| ~ServiceRecordState(); |
| // Properties common to Bluetooth Classic and LE devices. |
| std::string name; |
| // Properties specific to Bluetooth Classic devices. |
| std::vector<uint8> sdp_bytes; |
| // Properties specific to Bluetooth LE devices. |
| BluetoothUUID gatt_uuid; |
| }; |
| |
| struct DEVICE_BLUETOOTH_EXPORT DeviceState { |
| DeviceState(); |
| ~DeviceState(); |
| |
| bool is_bluetooth_classic() const { return path.empty(); } |
| |
| // Properties common to Bluetooth Classic and LE devices. |
| std::string address; // This uniquely identifies the device. |
| std::string name; // Friendly name |
| bool visible; |
| bool connected; |
| bool authenticated; |
| ScopedVector<ServiceRecordState> service_record_states; |
| // Properties specific to Bluetooth Classic devices. |
| uint32 bluetooth_class; |
| // Properties specific to Bluetooth LE devices. |
| base::FilePath path; |
| }; |
| |
| class DEVICE_BLUETOOTH_EXPORT Observer { |
| public: |
| virtual ~Observer() {} |
| |
| virtual void AdapterStateChanged(const AdapterState& state) {} |
| virtual void DiscoveryStarted(bool success) {} |
| virtual void DiscoveryStopped() {} |
| // Called when the adapter has just been polled for the list of *all* known |
| // devices. This includes devices previously paired, devices paired using |
| // the underlying Operating System UI, and devices discovered recently due |
| // to an active discovery session. Note that for a given device (address), |
| // the associated state can change over time. For example, during a |
| // discovery session, the "friendly" name may initially be "unknown" before |
| // the actual name is retrieved in subsequent poll events. |
| virtual void DevicesPolled(const ScopedVector<DeviceState>& devices) {} |
| }; |
| |
| explicit BluetoothTaskManagerWin( |
| scoped_refptr<base::SequencedTaskRunner> ui_task_runner); |
| |
| void AddObserver(Observer* observer); |
| void RemoveObserver(Observer* observer); |
| |
| void Initialize(); |
| void InitializeWithBluetoothTaskRunner( |
| scoped_refptr<base::SequencedTaskRunner> bluetooth_task_runner); |
| void Shutdown(); |
| |
| void PostSetPoweredBluetoothTask( |
| bool powered, |
| const base::Closure& callback, |
| const BluetoothAdapter::ErrorCallback& error_callback); |
| void PostStartDiscoveryTask(); |
| void PostStopDiscoveryTask(); |
| |
| private: |
| friend class base::RefCountedThreadSafe<BluetoothTaskManagerWin>; |
| friend class BluetoothTaskManagerWinTest; |
| |
| static const int kPollIntervalMs; |
| |
| virtual ~BluetoothTaskManagerWin(); |
| |
| // Logs Win32 errors occurring during polling on the worker thread. The method |
| // may discard messages to avoid logging being too verbose. |
| void LogPollingError(const char* message, int win32_error); |
| |
| // Notify all Observers of updated AdapterState. Should only be called on the |
| // UI thread. |
| void OnAdapterStateChanged(const AdapterState* state); |
| void OnDiscoveryStarted(bool success); |
| void OnDiscoveryStopped(); |
| void OnDevicesPolled(const ScopedVector<DeviceState>* devices); |
| |
| // Called on BluetoothTaskRunner. |
| void StartPolling(); |
| void PollAdapter(); |
| void PostAdapterStateToUi(); |
| void SetPowered(bool powered, |
| const base::Closure& callback, |
| const BluetoothAdapter::ErrorCallback& error_callback); |
| |
| // Starts discovery. Once the discovery starts, it issues a discovery inquiry |
| // with a short timeout, then issues more inquiries with greater timeout |
| // values. The discovery finishes when StopDiscovery() is called or timeout |
| // has reached its maximum value. |
| void StartDiscovery(); |
| void StopDiscovery(); |
| |
| // Issues a device inquiry that runs for |timeout_multiplier| * 1.28 seconds. |
| // This posts itself again with |timeout_multiplier| + 1 until |
| // |timeout_multiplier| reaches the maximum value or stop discovery call is |
| // received. |
| void DiscoverDevices(int timeout_multiplier); |
| |
| // Fetch already known device information. Similar to |StartDiscovery|, except |
| // this function does not issue a discovery inquiry. Instead it gets the |
| // device info cached in the adapter. |
| void GetKnownDevices(); |
| |
| // Looks for Bluetooth Classic and Low Energy devices, as well as the services |
| // exposed by those devices. |
| bool SearchDevices(int timeout_multiplier, |
| bool search_cached_devices_only, |
| ScopedVector<DeviceState>* device_list); |
| |
| // Sends a device search API call to the adapter to look for Bluetooth Classic |
| // devices. |
| bool SearchClassicDevices(int timeout_multiplier, |
| bool search_cached_devices_only, |
| ScopedVector<DeviceState>* device_list); |
| |
| // Enumerate Bluetooth Low Energy devices. |
| bool SearchLowEnergyDevices(ScopedVector<DeviceState>* device_list); |
| |
| // Discover services for the devices in |device_list|. |
| bool DiscoverServices(ScopedVector<DeviceState>* device_list, |
| bool search_cached_services_only); |
| |
| // Discover Bluetooth Classic services for the given |device_address|. |
| bool DiscoverClassicDeviceServices( |
| const std::string& device_address, |
| const GUID& protocol_uuid, |
| bool search_cached_services_only, |
| ScopedVector<ServiceRecordState>* service_record_states); |
| |
| // Discover Bluetooth Classic services for the given |device_address|. |
| // Returns a Win32 error code. |
| int DiscoverClassicDeviceServicesWorker( |
| const std::string& device_address, |
| const GUID& protocol_uuid, |
| bool search_cached_services_only, |
| ScopedVector<ServiceRecordState>* service_record_states); |
| |
| // Discover Bluetooth Low Energy services for the given |device_path|. |
| bool DiscoverLowEnergyDeviceServices( |
| const base::FilePath& device_path, |
| ScopedVector<ServiceRecordState>* service_record_states); |
| |
| // UI task runner reference. |
| scoped_refptr<base::SequencedTaskRunner> ui_task_runner_; |
| |
| scoped_refptr<base::SequencedWorkerPool> worker_pool_; |
| scoped_refptr<base::SequencedTaskRunner> bluetooth_task_runner_; |
| |
| // List of observers interested in event notifications. |
| ObserverList<Observer> observers_; |
| |
| // Adapter handle owned by bluetooth task runner. |
| base::win::ScopedHandle adapter_handle_; |
| |
| // indicates whether the adapter is in discovery mode or not. |
| bool discovering_; |
| |
| // Use for discarding too many log messages. |
| base::TimeTicks current_logging_batch_ticks_; |
| int current_logging_batch_count_; |
| |
| DISALLOW_COPY_AND_ASSIGN(BluetoothTaskManagerWin); |
| }; |
| |
| } // namespace device |
| |
| #endif // DEVICE_BLUETOOTH_BLUETOOTH_TASK_MANAGER_WIN_H_ |