| // Copyright 2014 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 COMPONENTS_USB_SERVICE_USB_SERVICE_H_ |
| #define COMPONENTS_USB_SERVICE_USB_SERVICE_H_ |
| |
| #include <vector> |
| |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "base/threading/non_thread_safe.h" |
| #include "components/usb_service/usb_service_export.h" |
| |
| namespace usb_service { |
| |
| class UsbDevice; |
| |
| // The USB service handles creating and managing an event handler thread that is |
| // used to manage and dispatch USB events. It is also responsible for device |
| // discovery on the system, which allows it to re-use device handles to prevent |
| // competition for the same USB device. |
| class USB_SERVICE_EXPORT UsbService : public base::NonThreadSafe { |
| public: |
| // Must be called on FILE thread. |
| // Returns NULL when failed to initialized. |
| static UsbService* GetInstance(); |
| |
| static void SetInstanceForTest(UsbService* instance); |
| |
| virtual scoped_refptr<UsbDevice> GetDeviceById(uint32 unique_id) = 0; |
| |
| // Get all of the devices attached to the system, inserting them into |
| // |devices|. Clears |devices| before use. The result will be sorted by id |
| // in increasing order. Must be called on FILE thread. |
| virtual void GetDevices(std::vector<scoped_refptr<UsbDevice> >* devices) = 0; |
| |
| protected: |
| friend struct base::DefaultDeleter<UsbService>; |
| UsbService() {} |
| virtual ~UsbService() {} |
| DISALLOW_COPY_AND_ASSIGN(UsbService); |
| }; |
| |
| } // namespace usb_service |
| |
| #endif // COMPONENTS_USB_SERVICE_USB_SERVICE_H_ |