blob: a43afd06754fe57accaef7b7269eee61ae20a4e6 [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 <memory>
#include <base/macros.h>
#include <base/memory/weak_ptr.h>
struct libusb_interface;
namespace mist {
class UsbDevice;
class UsbInterfaceDescriptor;
// A USB interface, which wraps a libusb_interface C struct from libusb 1.0 into
// a C++ object.
class UsbInterface {
// Constructs a UsbInterface object by taking a weak pointer to a UsbDevice
// object as |device| and a raw pointer to a libusb_interface struct as
// |interface|. |device| is passed to the constructor of
// UsbInterfaceDescriptor when creating a UsbInterfaceDescriptor object. The
// ownership of |interface| is not transferred, and thus it should outlive
// this object.
UsbInterface(const base::WeakPtr<UsbDevice>& device,
const libusb_interface* interface);
UsbInterface(const UsbInterface&) = delete;
UsbInterface& operator=(const UsbInterface&) = delete;
~UsbInterface() = default;
// Getters for retrieving fields of the libusb_interface struct.
int GetNumAlternateSettings() const;
// Returns a pointer to a UsbInterfaceDescriptor object for the interface
// descriptor indexed at |index|, or a NULL pointer if the index is invalid.
// The returned object should not be held beyond the lifetime of this object.
std::unique_ptr<UsbInterfaceDescriptor> GetAlternateSetting(int index) const;
base::WeakPtr<UsbDevice> device_;
const libusb_interface* const interface_;
} // namespace mist