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#include "components/usb_service/usb_interface_impl.h"
6
7#include "base/logging.h"
8#include "third_party/libusb/src/libusb/libusb.h"
9
10namespace usb_service {
11
12UsbEndpointDescriptorImpl::UsbEndpointDescriptorImpl(
13    scoped_refptr<const UsbConfigDescriptor> config,
14    PlatformUsbEndpointDescriptor descriptor)
15    : config_(config), descriptor_(descriptor) {
16}
17
18UsbEndpointDescriptorImpl::~UsbEndpointDescriptorImpl() {
19}
20
21int UsbEndpointDescriptorImpl::GetAddress() const {
22  return descriptor_->bEndpointAddress & LIBUSB_ENDPOINT_ADDRESS_MASK;
23}
24
25UsbEndpointDirection UsbEndpointDescriptorImpl::GetDirection() const {
26  switch (descriptor_->bEndpointAddress & LIBUSB_ENDPOINT_DIR_MASK) {
27    case LIBUSB_ENDPOINT_IN:
28      return USB_DIRECTION_INBOUND;
29    case LIBUSB_ENDPOINT_OUT:
30      return USB_DIRECTION_OUTBOUND;
31    default:
32      NOTREACHED();
33      return USB_DIRECTION_INBOUND;
34  }
35}
36
37int UsbEndpointDescriptorImpl::GetMaximumPacketSize() const {
38  return descriptor_->wMaxPacketSize;
39}
40
41UsbSynchronizationType
42    UsbEndpointDescriptorImpl::GetSynchronizationType() const {
43  switch (descriptor_->bmAttributes & LIBUSB_ISO_SYNC_TYPE_MASK) {
44    case LIBUSB_ISO_SYNC_TYPE_NONE:
45      return USB_SYNCHRONIZATION_NONE;
46    case LIBUSB_ISO_SYNC_TYPE_ASYNC:
47      return USB_SYNCHRONIZATION_ASYNCHRONOUS;
48    case LIBUSB_ISO_SYNC_TYPE_ADAPTIVE:
49      return USB_SYNCHRONIZATION_ADAPTIVE;
50    case LIBUSB_ISO_SYNC_TYPE_SYNC:
51      return USB_SYNCHRONIZATION_SYNCHRONOUS;
52    default:
53      NOTREACHED();
54      return USB_SYNCHRONIZATION_NONE;
55  }
56}
57
58UsbTransferType UsbEndpointDescriptorImpl::GetTransferType() const {
59  switch (descriptor_->bmAttributes & LIBUSB_TRANSFER_TYPE_MASK) {
60    case LIBUSB_TRANSFER_TYPE_CONTROL:
61      return USB_TRANSFER_CONTROL;
62    case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
63      return USB_TRANSFER_ISOCHRONOUS;
64    case LIBUSB_TRANSFER_TYPE_BULK:
65      return USB_TRANSFER_BULK;
66    case LIBUSB_TRANSFER_TYPE_INTERRUPT:
67      return USB_TRANSFER_INTERRUPT;
68    default:
69      NOTREACHED();
70      return USB_TRANSFER_CONTROL;
71  }
72}
73
74UsbUsageType UsbEndpointDescriptorImpl::GetUsageType() const {
75  switch (descriptor_->bmAttributes & LIBUSB_ISO_USAGE_TYPE_MASK) {
76    case LIBUSB_ISO_USAGE_TYPE_DATA:
77      return USB_USAGE_DATA;
78    case LIBUSB_ISO_USAGE_TYPE_FEEDBACK:
79      return USB_USAGE_FEEDBACK;
80    case LIBUSB_ISO_USAGE_TYPE_IMPLICIT:
81      return USB_USAGE_EXPLICIT_FEEDBACK;
82    default:
83      NOTREACHED();
84      return USB_USAGE_DATA;
85  }
86}
87
88int UsbEndpointDescriptorImpl::GetPollingInterval() const {
89  return descriptor_->bInterval;
90}
91
92UsbInterfaceAltSettingDescriptorImpl::UsbInterfaceAltSettingDescriptorImpl(
93    scoped_refptr<const UsbConfigDescriptor> config,
94    PlatformUsbInterfaceDescriptor descriptor)
95    : config_(config), descriptor_(descriptor) {
96}
97
98UsbInterfaceAltSettingDescriptorImpl::~UsbInterfaceAltSettingDescriptorImpl() {
99}
100
101size_t UsbInterfaceAltSettingDescriptorImpl::GetNumEndpoints() const {
102  return descriptor_->bNumEndpoints;
103}
104
105scoped_refptr<const UsbEndpointDescriptor>
106UsbInterfaceAltSettingDescriptorImpl::GetEndpoint(size_t index) const {
107  return new UsbEndpointDescriptorImpl(config_, &descriptor_->endpoint[index]);
108}
109
110int UsbInterfaceAltSettingDescriptorImpl::GetInterfaceNumber() const {
111  return descriptor_->bInterfaceNumber;
112}
113
114int UsbInterfaceAltSettingDescriptorImpl::GetAlternateSetting() const {
115  return descriptor_->bAlternateSetting;
116}
117
118int UsbInterfaceAltSettingDescriptorImpl::GetInterfaceClass() const {
119  return descriptor_->bInterfaceClass;
120}
121
122int UsbInterfaceAltSettingDescriptorImpl::GetInterfaceSubclass() const {
123  return descriptor_->bInterfaceSubClass;
124}
125
126int UsbInterfaceAltSettingDescriptorImpl::GetInterfaceProtocol() const {
127  return descriptor_->bInterfaceProtocol;
128}
129
130UsbInterfaceDescriptorImpl::UsbInterfaceDescriptorImpl(
131    scoped_refptr<const UsbConfigDescriptor> config,
132    PlatformUsbInterface usbInterface)
133    : config_(config), interface_(usbInterface) {
134}
135
136UsbInterfaceDescriptorImpl::~UsbInterfaceDescriptorImpl() {
137}
138
139size_t UsbInterfaceDescriptorImpl::GetNumAltSettings() const {
140  return interface_->num_altsetting;
141}
142
143scoped_refptr<const UsbInterfaceAltSettingDescriptor>
144UsbInterfaceDescriptorImpl::GetAltSetting(size_t index) const {
145  return new UsbInterfaceAltSettingDescriptorImpl(
146      config_, &interface_->altsetting[index]);
147}
148
149UsbConfigDescriptorImpl::UsbConfigDescriptorImpl(
150    PlatformUsbConfigDescriptor config)
151    : config_(config) {
152  DCHECK(config);
153}
154
155UsbConfigDescriptorImpl::~UsbConfigDescriptorImpl() {
156  libusb_free_config_descriptor(config_);
157}
158
159size_t UsbConfigDescriptorImpl::GetNumInterfaces() const {
160  return config_->bNumInterfaces;
161}
162
163scoped_refptr<const UsbInterfaceDescriptor>
164    UsbConfigDescriptorImpl::GetInterface(size_t index) const {
165  return new UsbInterfaceDescriptorImpl(this, &config_->interface[index]);
166}
167
168}  // namespace usb_service
169