#pragma once 

#include <stdint.h>

// Transparent structs used internally by the Usbd library.
typedef struct libusb_device libusb_device;
typedef struct libusb_device_handle libusb_device_handle;

struct libusb_device_descriptor {
	uint8_t bLength;
	uint8_t bDescriptorType;
	uint16_t bcdUSB;
	uint8_t bDeviceClass;
	uint8_t bDeviceSubClass;
	uint8_t bDeviceProtocol;
	uint8_t bMaxPacketSize0;
	uint16_t idVendor;
	uint16_t idProduct;
	uint16_t bcdDevice;
	uint8_t iManufacturer;
	uint8_t iProduct;
	uint8_t iSerialNumber;
	uint8_t bNumConfigurations;
};

struct libusb_interface_descriptor {
	uint8_t  bLength;
	uint8_t  bDescriptorType;
	uint8_t  bInterfaceNumber;
	uint8_t  bAlternateSetting;
	uint8_t  bNumEndpoints;
	uint8_t  bInterfaceClass;
	uint8_t  bInterfaceSubClass;
	uint8_t  bInterfaceProtocol;
	uint8_t  iInterface;
	struct libusb_endpoint_descriptor *endpoint;
	const unsigned char *extra;
	int extra_length;
};

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

struct libusb_config_descriptor {
	uint8_t  bLength;
	uint8_t  bDescriptorType;
	uint16_t wTotalLength;
	uint8_t  bNumInterfaces;
	uint8_t  bConfigurationValue;
	uint8_t  iConfiguration;
	uint8_t  bmAttributes;
	uint8_t  MaxPower;
	struct libusb_interface *interface;
	unsigned char *extra;
	int extra_length;
};

enum libusb_transfer_status {
    LIBUSB_TRANSFER_COMPLETED,
    LIBUSB_TRANSFER_ERROR,
    LIBUSB_TRANSFER_TIMED_OUT,
    LIBUSB_TRANSFER_CANCELLED,
    LIBUSB_TRANSFER_STALL,
    LIBUSB_TRANSFER_NO_DEVICE,
    LIBUSB_TRANSFER_OVERFLOW
};

struct libusb_iso_packet_descriptor {
    unsigned int length;
    unsigned int actual_length;
    enum libusb_transfer_status status;
};

typedef struct libusb_transfer libusb_transfer;
typedef void (*libusb_transfer_cb_fn)(struct libusb_transfer *transfer);

struct libusb_transfer {
    libusb_device_handle *dev_handle;
    uint8_t flags;
    unsigned char endpoint;
    unsigned char type;
    unsigned int timeout;
    enum libusb_transfer_status status;
    int length;
    int actual_length;
    libusb_transfer_cb_fn callback;
    void *user_data;
    unsigned char *buffer;
    int num_iso_packets;
    struct libusb_iso_packet_descriptor iso_packet_desc[0];
};