struct libusb_endpoint_descriptor {
	uint8_t offset1[2];
	uint8_t bEndpointAddress;
	uint8_t bmAttributes;
	uint8_t offset2[5];
	unsigned char *extra;
	int extra_length;
};
typedef struct libusb_endpoint_descriptor libusb_endpoint_descriptor;

struct libusb_interface_descriptor {
	uint8_t offset1[2];
	uint8_t bInterfaceNumber;
	uint8_t bAlternateSetting;
	uint8_t bNumEndpoints;
	uint8_t bInterfaceClass;
	uint8_t bInterfaceSubClass;
	uint8_t bInterfaceProtocol;
	uint8_t offset2;
	struct libusb_endpoint_descriptor *endpoint;
};
typedef struct libusb_interface_descriptor libusb_interface_descriptor;

struct libusb_interface {
	struct libusb_interface_descriptor *altsetting;
	int num_altsetting;
};
typedef struct libusb_interface libusb_interface;

struct libusb_config_descriptor {
	uint8_t offset1[4];
	uint8_t bNumInterfaces;
	uint8_t bConfigurationValue;
	uint8_t offset2[3];
	struct libusb_interface *interface;
};
typedef struct libusb_config_descriptor libusb_config_descriptor;

struct libusb_device {};
typedef struct libusb_device libusb_device;

struct libusb_device_descriptor {
	uint8_t offset1[8];
	uint16_t idVendor;
	uint16_t idProduct;
	uint8_t offset2[5];
	uint8_t bNumConfigurations;
};
typedef struct libusb_device_descriptor libusb_device_descriptor;