blob: bd7fbda50c2296c6455d2395fceda61ec1cc5045 [file] [log] [blame]
// Copyright (c) 2013 The Chromium OS 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 "mist/usb_interface.h"
#include <libusb.h>
#include <base/logging.h>
#include <base/strings/stringprintf.h>
#include "mist/usb_device.h"
#include "mist/usb_interface_descriptor.h"
using base::StringPrintf;
namespace mist {
UsbInterface::UsbInterface(const base::WeakPtr<UsbDevice>& device,
const libusb_interface* interface)
: device_(device),
interface_(interface) {
int UsbInterface::GetNumAlternateSettings() const {
return interface_->num_altsetting;
UsbInterfaceDescriptor* UsbInterface::GetAlternateSetting(
int index) const {
if (index < 0 || index >= GetNumAlternateSettings()) {
LOG(ERROR) << StringPrintf("Invalid alternate setting index %d. "
"Must be non-negative and less than %d.",
index, GetNumAlternateSettings());
return nullptr;
return new UsbInterfaceDescriptor(device_, &interface_->altsetting[index]);
} // namespace mist