| // Copyright 2017 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. |
| |
| #include "device/usb/usb_service.h" |
| |
| #include <list> |
| #include <unordered_map> |
| |
| #include "base/macros.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/scoped_observer.h" |
| #include "device/base/device_monitor_win.h" |
| #include "device/usb/usb_device_win.h" |
| |
| namespace base { |
| class SequencedTaskRunner; |
| } |
| |
| namespace device { |
| |
| class UsbServiceWin : public DeviceMonitorWin::Observer, public UsbService { |
| public: |
| explicit UsbServiceWin( |
| scoped_refptr<base::SequencedTaskRunner> blocking_task_runner); |
| ~UsbServiceWin() override; |
| |
| private: |
| class BlockingThreadHelper; |
| |
| // device::UsbService implementation |
| void GetDevices(const GetDevicesCallback& callback) override; |
| |
| // device::DeviceMonitorWin::Observer implementation |
| void OnDeviceAdded(const GUID& class_guid, |
| const std::string& device_path) override; |
| void OnDeviceRemoved(const GUID& class_guid, |
| const std::string& device_path) override; |
| |
| // Methods called by BlockingThreadHelper |
| void HelperStarted(); |
| void CreateDeviceObject(const std::string& device_path, |
| const std::string& hub_path, |
| int port_number, |
| const std::string& driver_name); |
| |
| void DeviceReady(scoped_refptr<UsbDeviceWin> device, bool success); |
| |
| bool enumeration_ready() { |
| return helper_started_ && first_enumeration_countdown_ == 0; |
| } |
| |
| // Enumeration callbacks are queued until an enumeration completes. |
| bool helper_started_ = false; |
| uint32_t first_enumeration_countdown_ = 0; |
| std::list<GetDevicesCallback> enumeration_callbacks_; |
| |
| BlockingThreadHelper* helper_; |
| std::unordered_map<std::string, scoped_refptr<UsbDeviceWin>> devices_by_path_; |
| |
| ScopedObserver<DeviceMonitorWin, DeviceMonitorWin::Observer> device_observer_; |
| |
| base::WeakPtrFactory<UsbServiceWin> weak_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(UsbServiceWin); |
| }; |
| |
| } // namespace device |