chrome/browser/usb/usb_interface.h

   1 // Copyright (c) 2012 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 CHROME_BROWSER_USB_USB_INTERFACE_H_
   6 #define CHROME_BROWSER_USB_USB_INTERFACE_H_
   7
   8 #include "base/memory/ref_counted.h"
   9
  10 struct libusb_config_descriptor;
  11 struct libusb_endpoint_descriptor;
  12 struct libusb_interface;
  13 struct libusb_interface_descriptor;
  14
  15 typedef libusb_config_descriptor* PlatformUsbConfigDescriptor;
  16 typedef const libusb_endpoint_descriptor* PlatformUsbEndpointDescriptor;
  17 typedef const libusb_interface* PlatformUsbInterface;
  18 typedef const libusb_interface_descriptor* PlatformUsbInterfaceDescriptor;
  19
  20 enum UsbTransferType {
  21   USB_TRANSFER_CONTROL = 0,
  22   USB_TRANSFER_ISOCHRONOUS,
  23   USB_TRANSFER_BULK,
  24   USB_TRANSFER_INTERRUPT,
  25 };
  26
  27 enum UsbEndpointDirection {
  28   USB_DIRECTION_INBOUND = 0,
  29   USB_DIRECTION_OUTBOUND,
  30 };
  31
  32 enum UsbSynchronizationType {
  33   USB_SYNCHRONIZATION_NONE = 0,
  34   USB_SYNCHRONIZATION_ASYNCHRONOUS,
  35   USB_SYNCHRONIZATION_ADAPTIVE,
  36   USB_SYNCHRONIZATION_SYNCHRONOUS,
  37 };
  38
  39 enum UsbUsageType {
  40   USB_USAGE_DATA = 0,
  41   USB_USAGE_FEEDBACK,
  42   USB_USAGE_EXPLICIT_FEEDBACK
  43 };
  44
  45 class UsbDevice;
  46 class UsbConfigDescriptor;
  47 class UsbInterfaceDescriptor;
  48 class UsbInterfaceAltSettingDescriptor;
  49
  50 class UsbEndpointDescriptor
  51     : public base::RefCounted<const UsbEndpointDescriptor> {
  52  public:
  53   int GetAddress() const;
  54   UsbEndpointDirection GetDirection() const;
  55   int GetMaximumPacketSize() const;
  56   UsbSynchronizationType GetSynchronizationType() const;
  57   UsbTransferType GetTransferType() const;
  58   UsbUsageType GetUsageType() const;
  59   int GetPollingInterval() const;
  60
  61  private:
  62   friend class base::RefCounted<const UsbEndpointDescriptor>;
  63   friend class UsbInterfaceAltSettingDescriptor;
  64
  65   UsbEndpointDescriptor(
  66       scoped_refptr<const UsbConfigDescriptor> config,
  67       PlatformUsbEndpointDescriptor descriptor);
  68   ~UsbEndpointDescriptor();
  69
  70   scoped_refptr<const UsbConfigDescriptor> config_;
  71   PlatformUsbEndpointDescriptor descriptor_;
  72
  73   DISALLOW_COPY_AND_ASSIGN(UsbEndpointDescriptor);
  74 };
  75
  76 class UsbInterfaceAltSettingDescriptor
  77     : public base::RefCounted<const UsbInterfaceAltSettingDescriptor> {
  78  public:
  79   size_t GetNumEndpoints() const;
  80   scoped_refptr<const UsbEndpointDescriptor> GetEndpoint(size_t index) const;
  81
  82   int GetInterfaceNumber() const;
  83   int GetAlternateSetting() const;
  84   int GetInterfaceClass() const;
  85   int GetInterfaceSubclass() const;
  86   int GetInterfaceProtocol() const;
  87
  88  private:
  89   friend class base::RefCounted<const UsbInterfaceAltSettingDescriptor>;
  90   friend class UsbInterfaceDescriptor;
  91
  92   UsbInterfaceAltSettingDescriptor(
  93       scoped_refptr<const UsbConfigDescriptor> config,
  94       PlatformUsbInterfaceDescriptor descriptor);
  95   ~UsbInterfaceAltSettingDescriptor();
  96
  97   scoped_refptr<const UsbConfigDescriptor> config_;
  98   PlatformUsbInterfaceDescriptor descriptor_;
  99
 100   DISALLOW_COPY_AND_ASSIGN(UsbInterfaceAltSettingDescriptor);
 101 };
 102
 103 class UsbInterfaceDescriptor
 104     : public base::RefCounted<const UsbInterfaceDescriptor> {
 105  public:
 106   size_t GetNumAltSettings() const;
 107   scoped_refptr<const UsbInterfaceAltSettingDescriptor> GetAltSetting(
 108       size_t index) const;
 109
 110  private:
 111   friend class base::RefCounted<const UsbInterfaceDescriptor>;
 112   friend class UsbConfigDescriptor;
 113
 114   UsbInterfaceDescriptor(scoped_refptr<const UsbConfigDescriptor> config,
 115                PlatformUsbInterface usbInterface);
 116   ~UsbInterfaceDescriptor();
 117
 118   scoped_refptr<const UsbConfigDescriptor> config_;
 119   PlatformUsbInterface interface_;
 120
 121   DISALLOW_COPY_AND_ASSIGN(UsbInterfaceDescriptor);
 122 };
 123
 124 class UsbConfigDescriptor : public base::RefCounted<UsbConfigDescriptor> {
 125  public:
 126   size_t GetNumInterfaces() const;
 127   scoped_refptr<const UsbInterfaceDescriptor> GetInterface(size_t index) const;
 128
 129  private:
 130   friend class base::RefCounted<UsbConfigDescriptor>;
 131   friend class UsbDevice;
 132
 133   explicit UsbConfigDescriptor(PlatformUsbConfigDescriptor config);
 134   ~UsbConfigDescriptor();
 135
 136   PlatformUsbConfigDescriptor config_;
 137
 138   DISALLOW_COPY_AND_ASSIGN(UsbConfigDescriptor);
 139 };
 140
 141 #endif  // CHROME_BROWSER_USB_USB_INTERFACE_H_