1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef DEVICE_USB_USB_DEVICE_IMPL_H_
6 #define DEVICE_USB_USB_DEVICE_IMPL_H_
10 #include "base/basictypes.h"
11 #include "base/callback.h"
12 #include "base/threading/thread_checker.h"
13 #include "device/usb/usb_descriptors.h"
14 #include "device/usb/usb_device.h"
17 struct libusb_config_descriptor;
20 class SingleThreadTaskRunner;
25 class UsbDeviceHandleImpl;
28 typedef libusb_device* PlatformUsbDevice;
29 typedef libusb_config_descriptor* PlatformUsbConfigDescriptor;
31 class UsbDeviceImpl : public UsbDevice {
33 // UsbDevice implementation:
34 #if defined(OS_CHROMEOS)
35 virtual void RequestUsbAccess(
37 const base::Callback<void(bool success)>& callback) OVERRIDE;
39 virtual scoped_refptr<UsbDeviceHandle> Open() OVERRIDE;
40 virtual bool Close(scoped_refptr<UsbDeviceHandle> handle) OVERRIDE;
41 virtual const UsbConfigDescriptor& GetConfiguration() OVERRIDE;
42 virtual bool GetManufacturer(base::string16* manufacturer) OVERRIDE;
43 virtual bool GetProduct(base::string16* product) OVERRIDE;
44 virtual bool GetSerialNumber(base::string16* serial_number) OVERRIDE;
47 friend class UsbServiceImpl;
49 // Called by UsbServiceImpl only;
50 UsbDeviceImpl(scoped_refptr<UsbContext> context,
51 scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner,
52 PlatformUsbDevice platform_device,
57 virtual ~UsbDeviceImpl();
59 // Called only be UsbService.
63 base::ThreadChecker thread_checker_;
64 PlatformUsbDevice platform_device_;
67 // On Linux these properties are read from sysfs when the device is enumerated
68 // to avoid hitting the permission broker on Chrome OS for a real string
69 // descriptor request.
70 std::string manufacturer_;
72 std::string serial_number_;
75 // The active configuration descriptor is not read immediately but cached for
77 bool current_configuration_cached_;
78 UsbConfigDescriptor current_configuration_;
80 // Retain the context so that it will not be released before UsbDevice.
81 scoped_refptr<UsbContext> context_;
84 typedef std::vector<scoped_refptr<UsbDeviceHandleImpl> > HandlesVector;
85 HandlesVector handles_;
87 // Reference to the UI thread for permission-broker calls.
88 scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner_;
90 DISALLOW_COPY_AND_ASSIGN(UsbDeviceImpl);
95 #endif // DEVICE_USB_USB_DEVICE_IMPL_H_