Extracted UsbConfigDescriptor, UsbInterfaceDescriptor and helper classes

components/usb_service/usb_interface.cc

-// 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.
-
-#include "components/usb_service/usb_interface.h"
-
-#include "base/logging.h"
-#include "third_party/libusb/src/libusb/libusb.h"
-
-namespace usb_service {
-
-UsbEndpointDescriptor::UsbEndpointDescriptor(
-    scoped_refptr<const UsbConfigDescriptor> config,
-    PlatformUsbEndpointDescriptor descriptor)
-    : config_(config), descriptor_(descriptor) {
-}
-
-UsbEndpointDescriptor::~UsbEndpointDescriptor() {
-}
-
-int UsbEndpointDescriptor::GetAddress() const {
-  return descriptor_->bEndpointAddress & LIBUSB_ENDPOINT_ADDRESS_MASK;
-}
-
-UsbEndpointDirection UsbEndpointDescriptor::GetDirection() const {
-  switch (descriptor_->bEndpointAddress & LIBUSB_ENDPOINT_DIR_MASK) {
-    case LIBUSB_ENDPOINT_IN:
-      return USB_DIRECTION_INBOUND;
-    case LIBUSB_ENDPOINT_OUT:
-      return USB_DIRECTION_OUTBOUND;
-    default:
-      NOTREACHED();
-      return USB_DIRECTION_INBOUND;
-  }
-}
-
-int UsbEndpointDescriptor::GetMaximumPacketSize() const {
-  return descriptor_->wMaxPacketSize;
-}
-
-UsbSynchronizationType UsbEndpointDescriptor::GetSynchronizationType() const {
-  switch (descriptor_->bmAttributes & LIBUSB_ISO_SYNC_TYPE_MASK) {
-    case LIBUSB_ISO_SYNC_TYPE_NONE:
-      return USB_SYNCHRONIZATION_NONE;
-    case LIBUSB_ISO_SYNC_TYPE_ASYNC:
-      return USB_SYNCHRONIZATION_ASYNCHRONOUS;
-    case LIBUSB_ISO_SYNC_TYPE_ADAPTIVE:
-      return USB_SYNCHRONIZATION_ADAPTIVE;
-    case LIBUSB_ISO_SYNC_TYPE_SYNC:
-      return USB_SYNCHRONIZATION_SYNCHRONOUS;
-    default:
-      NOTREACHED();
-      return USB_SYNCHRONIZATION_NONE;
-  }
-}
-
-UsbTransferType UsbEndpointDescriptor::GetTransferType() const {
-  switch (descriptor_->bmAttributes & LIBUSB_TRANSFER_TYPE_MASK) {
-    case LIBUSB_TRANSFER_TYPE_CONTROL:
-      return USB_TRANSFER_CONTROL;
-    case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
-      return USB_TRANSFER_ISOCHRONOUS;
-    case LIBUSB_TRANSFER_TYPE_BULK:
-      return USB_TRANSFER_BULK;
-    case LIBUSB_TRANSFER_TYPE_INTERRUPT:
-      return USB_TRANSFER_INTERRUPT;
-    default:
-      NOTREACHED();
-      return USB_TRANSFER_CONTROL;
-  }
-}
-
-UsbUsageType UsbEndpointDescriptor::GetUsageType() const {
-  switch (descriptor_->bmAttributes & LIBUSB_ISO_USAGE_TYPE_MASK) {
-    case LIBUSB_ISO_USAGE_TYPE_DATA:
-      return USB_USAGE_DATA;
-    case LIBUSB_ISO_USAGE_TYPE_FEEDBACK:
-      return USB_USAGE_FEEDBACK;
-    case LIBUSB_ISO_USAGE_TYPE_IMPLICIT:
-      return USB_USAGE_EXPLICIT_FEEDBACK;
-    default:
-      NOTREACHED();
-      return USB_USAGE_DATA;
-  }
-}
-
-int UsbEndpointDescriptor::GetPollingInterval() const {
-  return descriptor_->bInterval;
-}
-
-UsbInterfaceAltSettingDescriptor::UsbInterfaceAltSettingDescriptor(
-    scoped_refptr<const UsbConfigDescriptor> config,
-    PlatformUsbInterfaceDescriptor descriptor)
-    : config_(config), descriptor_(descriptor) {
-}
-
-UsbInterfaceAltSettingDescriptor::~UsbInterfaceAltSettingDescriptor() {
-}
-
-size_t UsbInterfaceAltSettingDescriptor::GetNumEndpoints() const {
-  return descriptor_->bNumEndpoints;
-}
-
-scoped_refptr<const UsbEndpointDescriptor>
-UsbInterfaceAltSettingDescriptor::GetEndpoint(size_t index) const {
-  return new UsbEndpointDescriptor(config_, &descriptor_->endpoint[index]);
-}
-
-int UsbInterfaceAltSettingDescriptor::GetInterfaceNumber() const {
-  return descriptor_->bInterfaceNumber;
-}
-
-int UsbInterfaceAltSettingDescriptor::GetAlternateSetting() const {
-  return descriptor_->bAlternateSetting;
-}
-
-int UsbInterfaceAltSettingDescriptor::GetInterfaceClass() const {
-  return descriptor_->bInterfaceClass;
-}
-
-int UsbInterfaceAltSettingDescriptor::GetInterfaceSubclass() const {
-  return descriptor_->bInterfaceSubClass;
-}
-
-int UsbInterfaceAltSettingDescriptor::GetInterfaceProtocol() const {
-  return descriptor_->bInterfaceProtocol;
-}
-
-UsbInterfaceDescriptor::UsbInterfaceDescriptor(
-    scoped_refptr<const UsbConfigDescriptor> config,
-    PlatformUsbInterface usbInterface)
-    : config_(config), interface_(usbInterface) {
-}
-
-UsbInterfaceDescriptor::~UsbInterfaceDescriptor() {
-}
-
-size_t UsbInterfaceDescriptor::GetNumAltSettings() const {
-  return interface_->num_altsetting;
-}
-
-scoped_refptr<const UsbInterfaceAltSettingDescriptor>
-UsbInterfaceDescriptor::GetAltSetting(size_t index) const {
-  return new UsbInterfaceAltSettingDescriptor(config_,
-                                              &interface_->altsetting[index]);
-}
-
-UsbConfigDescriptor::UsbConfigDescriptor(PlatformUsbConfigDescriptor config)
-    : config_(config) {
-}
-
-// TODO(zvorygin): Used for tests only. Should be removed when
-// all interfaces are extracted properly.
-UsbConfigDescriptor::UsbConfigDescriptor() {
-  config_ = NULL;
-}
-
-UsbConfigDescriptor::~UsbConfigDescriptor() {
-  if (config_ != NULL) {
-    libusb_free_config_descriptor(config_);
-    config_ = NULL;
-  }
-}
-
-size_t UsbConfigDescriptor::GetNumInterfaces() const {
-  return config_->bNumInterfaces;
-}
-
-scoped_refptr<const UsbInterfaceDescriptor> UsbConfigDescriptor::GetInterface(
-    size_t index) const {
-  return new UsbInterfaceDescriptor(this, &config_->interface[index]);
-}
-
-}  // namespace usb_service