components/usb_service/usb_device_impl.h

   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.
   4
   5 #ifndef COMPONENTS_USB_SERVICE_USB_DEVICE_IMPL_H_
   6 #define COMPONENTS_USB_SERVICE_USB_DEVICE_IMPL_H_
   7
   8 #include <vector>
   9
  10 #include "base/basictypes.h"
  11 #include "base/callback.h"
  12 #include "base/threading/thread_checker.h"
  13 #include "components/usb_service/usb_device.h"
  14
  15 struct libusb_device;
  16 struct libusb_config_descriptor;
  17
  18 namespace usb_service {
  19
  20 class UsbDeviceHandleImpl;
  21 class UsbContext;
  22
  23 typedef libusb_device* PlatformUsbDevice;
  24 typedef libusb_config_descriptor* PlatformUsbConfigDescriptor;
  25
  26 class UsbDeviceImpl : public UsbDevice {
  27  public:
  28 // UsbDevice implementation:
  29 #if defined(OS_CHROMEOS)
  30   virtual void RequestUsbAccess(
  31       int interface_id,
  32       const base::Callback<void(bool success)>& callback) OVERRIDE;
  33 #endif  // OS_CHROMEOS
  34   virtual scoped_refptr<UsbDeviceHandle> Open() OVERRIDE;
  35   virtual bool Close(scoped_refptr<UsbDeviceHandle> handle) OVERRIDE;
  36   virtual scoped_refptr<UsbConfigDescriptor> ListInterfaces() OVERRIDE;
  37
  38  protected:
  39   friend class UsbServiceImpl;
  40
  41   // Called by UsbServiceImpl only;
  42   UsbDeviceImpl(scoped_refptr<UsbContext> context,
  43                 PlatformUsbDevice platform_device,
  44                 uint16 vendor_id,
  45                 uint16 product_id,
  46                 uint32 unique_id);
  47
  48   virtual ~UsbDeviceImpl();
  49
  50   // Called only be UsbService.
  51   void OnDisconnect();
  52
  53  private:
  54   base::ThreadChecker thread_checker_;
  55   PlatformUsbDevice platform_device_;
  56
  57   // Retain the context so that it will not be released before UsbDevice.
  58   scoped_refptr<UsbContext> context_;
  59
  60   // Opened handles.
  61   typedef std::vector<scoped_refptr<UsbDeviceHandleImpl> > HandlesVector;
  62   HandlesVector handles_;
  63
  64   DISALLOW_COPY_AND_ASSIGN(UsbDeviceImpl);
  65 };
  66
  67 }  // namespace usb_service
  68
  69 #endif  // COMPONENTS_USB_SERVICE_USB_DEVICE_IMPL_H_