A structure representing the standard USB interface descriptor. More...

#include <libusb.h>

Data Fields
uint8_t	bLength
	Size of this descriptor (in bytes)
uint8_t	bDescriptorType
	Descriptor type.
uint8_t	bInterfaceNumber
	Number of this interface.
uint8_t	bAlternateSetting
	Value used to select this alternate setting for this interface.
uint8_t	bNumEndpoints
	Number of endpoints used by this interface (excluding the control endpoint).
uint8_t	bInterfaceClass
	USB-IF class code for this interface.
uint8_t	bInterfaceSubClass
	USB-IF subclass code for this interface, qualified by the bInterfaceClass value.
uint8_t	bInterfaceProtocol
	USB-IF protocol code for this interface, qualified by the bInterfaceClass and bInterfaceSubClass values.
uint8_t	iInterface
	Index of string descriptor describing this interface.
struct libusb_endpoint_descriptor *	endpoint
	Array of endpoint descriptors.
const unsigned char *	extra
	Extra descriptors.
int	extra_length
	Length of the extra descriptors, in bytes.

Detailed Description

A structure representing the standard USB interface descriptor.

This descriptor is documented in section 9.6.5 of the USB 2.0 specification. All multiple-byte fields are represented in host-endian format.

Field Documentation

uint8_t libusb_interface_descriptor::bDescriptorType

Descriptor type.

Will have value libusb_descriptor_type::LIBUSB_DT_INTERFACE LIBUSB_DT_INTERFACE in this context.

uint8_t libusb_interface_descriptor::bNumEndpoints

Number of endpoints used by this interface (excluding the control endpoint).

uint8_t libusb_interface_descriptor::bInterfaceClass

USB-IF class code for this interface.

struct libusb_endpoint_descriptor* libusb_interface_descriptor::endpoint

Array of endpoint descriptors.

This length of this array is determined by the bNumEndpoints field.

const unsigned char* libusb_interface_descriptor::extra

Extra descriptors.

If libusb encounters unknown interface descriptors, it will store them here, should you wish to parse them.

int libusb_interface_descriptor::extra_length

Length of the extra descriptors, in bytes.

The documentation for this struct was generated from the following file: