/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2009 Sylvestre Gallon. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef __LIBUSB_H__
#define __LIBUSB_H__

#ifndef LIBUSB_GLOBAL_INCLUDE_FILE
#include <stdint.h>
#include <sys/time.h>
#include <sys/types.h>
#endif

#define LIBUSB_API_VERSION 0x01000102

#define LIBUSB_CALL

#ifdef __cplusplus
extern  "C" {
#endif
#if 0
}                                       /* indent fix */

#endif

/* libusb enums */

enum libusb_class_code {
        LIBUSB_CLASS_PER_INTERFACE = 0,
        LIBUSB_CLASS_AUDIO = 1,
        LIBUSB_CLASS_COMM = 2,
        LIBUSB_CLASS_HID = 3,
        LIBUSB_CLASS_PHYSICAL = 5,
        LIBUSB_CLASS_PTP = 6,
        LIBUSB_CLASS_IMAGE = 6,
        LIBUSB_CLASS_PRINTER = 7,
        LIBUSB_CLASS_MASS_STORAGE = 8,
        LIBUSB_CLASS_HUB = 9,
        LIBUSB_CLASS_DATA = 10,
        LIBUSB_CLASS_SMART_CARD = 11,
        LIBUSB_CLASS_CONTENT_SECURITY = 13,
        LIBUSB_CLASS_VIDEO = 14,
        LIBUSB_CLASS_PERSONAL_HEALTHCARE = 15,
        LIBUSB_CLASS_DIAGNOSTIC_DEVICE = 0xdc,
        LIBUSB_CLASS_WIRELESS = 0xe0,
        LIBUSB_CLASS_MISCELLANEOUS = 0xef,
        LIBUSB_CLASS_APPLICATION = 0xfe,
        LIBUSB_CLASS_VENDOR_SPEC = 0xff,
};

enum libusb_descriptor_type {
        LIBUSB_DT_DEVICE = 0x01,
        LIBUSB_DT_CONFIG = 0x02,
        LIBUSB_DT_STRING = 0x03,
        LIBUSB_DT_INTERFACE = 0x04,
        LIBUSB_DT_ENDPOINT = 0x05,
        LIBUSB_DT_HID = 0x21,
        LIBUSB_DT_REPORT = 0x22,
        LIBUSB_DT_PHYSICAL = 0x23,
        LIBUSB_DT_HUB = 0x29,
        LIBUSB_DT_BOS = 0x0f,
        LIBUSB_DT_DEVICE_CAPABILITY = 0x10,
        LIBUSB_DT_SS_ENDPOINT_COMPANION = 0x30,
};

enum libusb_device_capability_type {
        LIBUSB_WIRELESS_USB_DEVICE_CAPABILITY = 0x1,
        LIBUSB_USB_2_0_EXTENSION_DEVICE_CAPABILITY = 0x2,
        LIBUSB_SS_USB_DEVICE_CAPABILITY = 0x3,
        LIBUSB_CONTAINER_ID_DEVICE_CAPABILITY = 0x4,
};

#define LIBUSB_DT_DEVICE_SIZE           18
#define LIBUSB_DT_CONFIG_SIZE           9
#define LIBUSB_DT_INTERFACE_SIZE        9
#define LIBUSB_DT_ENDPOINT_SIZE         7
#define LIBUSB_DT_ENDPOINT_AUDIO_SIZE   9
#define LIBUSB_DT_HUB_NONVAR_SIZE       7
#define LIBUSB_DT_SS_ENDPOINT_COMPANION_SIZE    6
#define LIBUSB_DT_BOS_SIZE              5
#define LIBUSB_USB_2_0_EXTENSION_DEVICE_CAPABILITY_SIZE 7
#define LIBUSB_SS_USB_DEVICE_CAPABILITY_SIZE    10

#define LIBUSB_BT_USB_2_0_EXTENSION_SIZE        7
#define LIBUSB_BT_SS_USB_DEVICE_CAPABILITY_SIZE 10
#define LIBUSB_BT_CONTAINER_ID_SIZE             20
#define LIBUSB_BT_PLATFORM_DESCRIPTOR_MIN_SIZE  20

#define LIBUSB_ENDPOINT_ADDRESS_MASK    0x0f
#define LIBUSB_ENDPOINT_DIR_MASK        0x80

enum libusb_endpoint_direction {
        LIBUSB_ENDPOINT_IN = 0x80,
        LIBUSB_ENDPOINT_OUT = 0x00,
};

#define LIBUSB_TRANSFER_TYPE_MASK       0x03

enum libusb_transfer_type {
        LIBUSB_TRANSFER_TYPE_CONTROL = 0,
        LIBUSB_TRANSFER_TYPE_ISOCHRONOUS = 1,
        LIBUSB_TRANSFER_TYPE_BULK = 2,
        LIBUSB_TRANSFER_TYPE_INTERRUPT = 3,
        LIBUSB_TRANSFER_TYPE_BULK_STREAM = 4,
};

enum libusb_standard_request {
        LIBUSB_REQUEST_GET_STATUS = 0x00,
        LIBUSB_REQUEST_CLEAR_FEATURE = 0x01,
        LIBUSB_REQUEST_SET_FEATURE = 0x03,
        LIBUSB_REQUEST_SET_ADDRESS = 0x05,
        LIBUSB_REQUEST_GET_DESCRIPTOR = 0x06,
        LIBUSB_REQUEST_SET_DESCRIPTOR = 0x07,
        LIBUSB_REQUEST_GET_CONFIGURATION = 0x08,
        LIBUSB_REQUEST_SET_CONFIGURATION = 0x09,
        LIBUSB_REQUEST_GET_INTERFACE = 0x0A,
        LIBUSB_REQUEST_SET_INTERFACE = 0x0B,
        LIBUSB_REQUEST_SYNCH_FRAME = 0x0C,
        LIBUSB_REQUEST_SET_SEL = 0x30,
        LIBUSB_REQUEST_SET_ISOCH_DELAY = 0x31,
};

enum libusb_request_type {
        LIBUSB_REQUEST_TYPE_STANDARD = (0x00 << 5),
        LIBUSB_REQUEST_TYPE_CLASS = (0x01 << 5),
        LIBUSB_REQUEST_TYPE_VENDOR = (0x02 << 5),
        LIBUSB_REQUEST_TYPE_RESERVED = (0x03 << 5),
};

enum libusb_request_recipient {
        LIBUSB_RECIPIENT_DEVICE = 0x00,
        LIBUSB_RECIPIENT_INTERFACE = 0x01,
        LIBUSB_RECIPIENT_ENDPOINT = 0x02,
        LIBUSB_RECIPIENT_OTHER = 0x03,
};

#define LIBUSB_ISO_SYNC_TYPE_MASK       0x0C

enum libusb_iso_sync_type {
        LIBUSB_ISO_SYNC_TYPE_NONE = 0,
        LIBUSB_ISO_SYNC_TYPE_ASYNC = 1,
        LIBUSB_ISO_SYNC_TYPE_ADAPTIVE = 2,
        LIBUSB_ISO_SYNC_TYPE_SYNC = 3,
};

#define LIBUSB_ISO_USAGE_TYPE_MASK 0x30

enum libusb_iso_usage_type {
        LIBUSB_ISO_USAGE_TYPE_DATA = 0,
        LIBUSB_ISO_USAGE_TYPE_FEEDBACK = 1,
        LIBUSB_ISO_USAGE_TYPE_IMPLICIT = 2,
};

enum libusb_usb_2_0_extension_attributes {
        LIBUSB_BM_LPM_SUPPORT = 0x2,
};

enum libusb_supported_speed {
        LIBUSB_LOW_SPEED_OPERATION = (1 << 0),
        LIBUSB_FULL_SPEED_OPERATION = (1 << 1),
        LIBUSB_HIGH_SPEED_OPERATION = (1 << 2),
        LIBUSB_SUPER_SPEED_OPERATION = (1 << 3),
};

enum libusb_bos_type {
        LIBUSB_BT_WIRELESS_USB_DEVICE_CAPABILITY = 1,
        LIBUSB_BT_USB_2_0_EXTENSION = 2,
        LIBUSB_BT_SS_USB_DEVICE_CAPABILITY = 3,
        LIBUSB_BT_CONTAINER_ID = 4,
        LIBUSB_BT_PLATFORM_DESCRIPTOR = 5,
};

enum libusb_capability {
        /* libusb supports libusb_has_capability(). */
        LIBUSB_CAP_HAS_CAPABILITY = 0,
        /* Hotplug support is available. */
        LIBUSB_CAP_HAS_HOTPLUG,
        /* Can access HID devices without requiring user intervention. */
        LIBUSB_CAP_HAS_HID_ACCESS,

        /*
         * Supports detaching of the default USB driver with
         * libusb_detach_kernel_driver().
         */
        LIBUSB_CAP_SUPPORTS_DETACH_KERNEL_DRIVER,
};

enum libusb_error {
        LIBUSB_SUCCESS = 0,
        LIBUSB_ERROR_IO = -1,
        LIBUSB_ERROR_INVALID_PARAM = -2,
        LIBUSB_ERROR_ACCESS = -3,
        LIBUSB_ERROR_NO_DEVICE = -4,
        LIBUSB_ERROR_NOT_FOUND = -5,
        LIBUSB_ERROR_BUSY = -6,
        LIBUSB_ERROR_TIMEOUT = -7,
        LIBUSB_ERROR_OVERFLOW = -8,
        LIBUSB_ERROR_PIPE = -9,
        LIBUSB_ERROR_INTERRUPTED = -10,
        LIBUSB_ERROR_NO_MEM = -11,
        LIBUSB_ERROR_NOT_SUPPORTED = -12,
        LIBUSB_ERROR_OTHER = -99,
};

#define LIBUSB_ERROR_COUNT 14

enum libusb_speed {
        LIBUSB_SPEED_UNKNOWN = 0,
        LIBUSB_SPEED_LOW = 1,
        LIBUSB_SPEED_FULL = 2,
        LIBUSB_SPEED_HIGH = 3,
        LIBUSB_SPEED_SUPER = 4,
        LIBUSB_SPEED_SUPER_PLUS = 5,
};

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,
};

enum libusb_transfer_flags {
        LIBUSB_TRANSFER_SHORT_NOT_OK = 1 << 0,
        LIBUSB_TRANSFER_FREE_BUFFER = 1 << 1,
        LIBUSB_TRANSFER_FREE_TRANSFER = 1 << 2,
};

enum libusb_log_level {
       LIBUSB_LOG_LEVEL_NONE = 0,
       LIBUSB_LOG_LEVEL_ERROR,
       LIBUSB_LOG_LEVEL_WARNING,
       LIBUSB_LOG_LEVEL_INFO,
       LIBUSB_LOG_LEVEL_DEBUG
};

#define LIBUSB_HOTPLUG_MATCH_ANY -1

typedef enum {
        LIBUSB_HOTPLUG_NO_FLAGS = 0,
        LIBUSB_HOTPLUG_ENUMERATE = 1 << 0,
} libusb_hotplug_flag;

typedef enum {
        LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED = 1,
        LIBUSB_HOTPLUG_EVENT_DEVICE_LEFT = 2,
} libusb_hotplug_event;

enum libusb_option {
        LIBUSB_OPTION_LOG_LEVEL = 0,
        LIBUSB_OPTION_USE_USBDK = 1,
        LIBUSB_OPTION_NO_DEVICE_DISCOVERY = 2,
        LIBUSB_OPTION_WEAK_AUTHORITY = 2,
        LIBUSB_OPTION_MAX = 3,
};

/* libusb structures */

struct libusb_context;
struct libusb_device;
struct libusb_transfer;
struct libusb_device_handle;
struct libusb_hotplug_callback_handle_struct;

struct libusb_pollfd {
        int     fd;
        short   events;
};

struct libusb_version {
        const uint16_t major;
        const uint16_t minor;
        const uint16_t micro;
        const uint16_t nano;
        const char *rc;
        const char *describe;
};

struct libusb_init_option {
        enum libusb_option option;
        union {
                int64_t ival;
        } value;
};

typedef struct libusb_context libusb_context;
typedef struct libusb_device libusb_device;
typedef struct libusb_device_handle libusb_device_handle;
typedef struct libusb_pollfd libusb_pollfd;
typedef void (*libusb_pollfd_added_cb) (int fd, short events, void *user_data);
typedef void (*libusb_pollfd_removed_cb) (int fd, void *user_data);
typedef struct libusb_hotplug_callback_handle_struct *libusb_hotplug_callback_handle;

typedef 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;
}       libusb_device_descriptor;

typedef struct libusb_endpoint_descriptor {
        uint8_t bLength;
        uint8_t bDescriptorType;
        uint8_t bEndpointAddress;
        uint8_t bmAttributes;
        uint16_t wMaxPacketSize;
        uint8_t bInterval;
        uint8_t bRefresh;
        uint8_t bSynchAddress;
        uint8_t *extra;
        int     extra_length;
}       libusb_endpoint_descriptor __aligned(sizeof(void *));

typedef struct libusb_ss_endpoint_companion_descriptor {
        uint8_t bLength;
        uint8_t bDescriptorType;
        uint8_t bMaxBurst;
        uint8_t bmAttributes;
        uint16_t wBytesPerInterval;
}       libusb_ss_endpoint_companion_descriptor __aligned(sizeof(void *));

typedef 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;
        uint8_t *extra;
        int     extra_length;
}       libusb_interface_descriptor __aligned(sizeof(void *));

typedef struct libusb_interface {
        struct libusb_interface_descriptor *altsetting;
        int     num_altsetting;
}       libusb_interface __aligned(sizeof(void *));

typedef 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;
        uint8_t *extra;
        int     extra_length;
}       libusb_config_descriptor __aligned(sizeof(void *));

typedef struct libusb_usb_2_0_device_capability_descriptor {
        uint8_t bLength;
        uint8_t bDescriptorType;
        uint8_t bDevCapabilityType;
        uint32_t bmAttributes;
#define LIBUSB_USB_2_0_CAPABILITY_LPM_SUPPORT  (1 << 1)
}       libusb_usb_2_0_device_capability_descriptor __aligned(sizeof(void *));

typedef struct libusb_ss_usb_device_capability_descriptor {
        uint8_t bLength;
        uint8_t bDescriptorType;
        uint8_t bDevCapabilityType;
        uint8_t bmAttributes;
#define LIBUSB_SS_USB_CAPABILITY_LPM_SUPPORT   (1 << 1)
        uint16_t wSpeedSupported;
#define LIBUSB_CAPABILITY_LOW_SPEED_OPERATION  (1)
#define LIBUSB_CAPABILITY_FULL_SPEED_OPERATION (1 << 1)
#define LIBUSB_CAPABILITY_HIGH_SPEED_OPERATION (1 << 2)
#define LIBUSB_CAPABILITY_5GBPS_OPERATION      (1 << 3)
        uint8_t bFunctionalitySupport;
        uint8_t bU1DevExitLat;
        uint16_t wU2DevExitLat;
}       libusb_ss_usb_device_capability_descriptor __aligned(sizeof(void *));

typedef struct libusb_bos_dev_capability_descriptor {
        uint8_t bLength;
        uint8_t bDescriptorType;
        uint8_t bDevCapabilityType;
        uint8_t dev_capability_data[0];
}       libusb_bos_dev_capability_descriptor __aligned(sizeof(void *));

typedef struct libusb_bos_descriptor {
        uint8_t bLength;
        uint8_t bDescriptorType;
        uint16_t wTotalLength;
#ifndef bNumDeviceCapabilities
#define bNumDeviceCapabilities bNumDeviceCaps
#endif
        uint8_t bNumDeviceCaps;
        struct libusb_usb_2_0_device_capability_descriptor *usb_2_0_ext_cap;
        struct libusb_ss_usb_device_capability_descriptor *ss_usb_cap;
        struct libusb_bos_dev_capability_descriptor **dev_capability;
}       libusb_bos_descriptor __aligned(sizeof(void *));

typedef struct libusb_usb_2_0_extension_descriptor {
        uint8_t bLength;
        uint8_t bDescriptorType;
        uint8_t bDevCapabilityType;
        uint32_t bmAttributes;
}       libusb_usb_2_0_extension_descriptor __aligned(sizeof(void *));

typedef struct libusb_container_id_descriptor {
        uint8_t bLength;
        uint8_t bDescriptorType;
        uint8_t bDevCapabilityType;
        uint8_t bReserved;
        uint8_t ContainerID[16];
}       libusb_container_id_descriptor __aligned(sizeof(void *));

typedef struct libusb_platform_descriptor {
        uint8_t bLength;
        uint8_t bDescriptorType;
        uint8_t bDevCapabilityType;
        uint8_t bReserved;
        uint8_t PlatformCapabilityUUID[16];
        uint8_t CapabilityData[];
}       libusb_platform_descriptor __aligned(sizeof(void *));

typedef struct libusb_control_setup {
        uint8_t bmRequestType;
        uint8_t bRequest;
        uint16_t wValue;
        uint16_t wIndex;
        uint16_t wLength;
}       libusb_control_setup;

#define LIBUSB_CONTROL_SETUP_SIZE       8       /* bytes */

typedef struct libusb_iso_packet_descriptor {
        uint32_t length;
        uint32_t actual_length;
        enum libusb_transfer_status status;
}       libusb_iso_packet_descriptor __aligned(sizeof(void *));

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

typedef struct libusb_transfer {
        libusb_device_handle *dev_handle;
        uint8_t flags;
        uint8_t endpoint;
        uint8_t type;
        uint32_t timeout;
        enum libusb_transfer_status status;
        int     length;
        int     actual_length;
        libusb_transfer_cb_fn callback;
        void   *user_data;
        uint8_t *buffer;
        int     num_iso_packets;
        struct libusb_iso_packet_descriptor iso_packet_desc[0];
}       libusb_transfer __aligned(sizeof(void *));

/* Library initialisation */

void    libusb_set_debug(libusb_context * ctx, int level);
const struct libusb_version *libusb_get_version(void);
const char *libusb_strerror(int code);
const char *libusb_error_name(int code);
int     libusb_init(libusb_context ** context);
int     libusb_init_context(libusb_context **, const struct libusb_init_option [], int num_options);
void    libusb_exit(struct libusb_context *ctx);
int     libusb_has_capability(uint32_t capability);
int     libusb_setlocale(const char *locale);

/* Device handling and enumeration */

ssize_t libusb_get_device_list(libusb_context * ctx, libusb_device *** list);
void    libusb_free_device_list(libusb_device ** list, int unref_devices);
uint8_t libusb_get_bus_number(libusb_device * dev);
uint8_t libusb_get_port_number(libusb_device * dev);
int     libusb_get_port_numbers(libusb_device *dev, uint8_t *buf, uint8_t bufsize);
int     libusb_get_port_path(libusb_context *ctx, libusb_device *dev, uint8_t *buf, uint8_t bufsize);
uint8_t libusb_get_device_address(libusb_device * dev);
enum libusb_speed libusb_get_device_speed(libusb_device * dev);
int     libusb_clear_halt(libusb_device_handle *devh, uint8_t endpoint);
int     libusb_get_max_packet_size(libusb_device * dev, uint8_t endpoint);
int     libusb_get_max_iso_packet_size(libusb_device * dev, uint8_t endpoint);
libusb_device *libusb_ref_device(libusb_device * dev);
void    libusb_unref_device(libusb_device * dev);
int     libusb_wrap_sys_device(libusb_context *ctx, intptr_t sys_dev, libusb_device_handle **dev_handle);
int     libusb_open(libusb_device * dev, libusb_device_handle ** devh);
libusb_device_handle *libusb_open_device_with_vid_pid(libusb_context * ctx, uint16_t vendor_id, uint16_t product_id);
void    libusb_close(libusb_device_handle * devh);
libusb_device *libusb_get_device(libusb_device_handle * devh);
libusb_device *libusb_get_parent(libusb_device * dev);
int     libusb_get_configuration(libusb_device_handle * devh, int *config);
int     libusb_set_configuration(libusb_device_handle * devh, int configuration);
int     libusb_claim_interface(libusb_device_handle * devh, int interface_number);
int     libusb_release_interface(libusb_device_handle * devh, int interface_number);
int     libusb_reset_device(libusb_device_handle * devh);
int     libusb_check_connected(libusb_device_handle * devh);
int     libusb_kernel_driver_active(libusb_device_handle * devh, int interface);
int     libusb_get_driver_np(libusb_device_handle * devh, int interface, char *name, int namelen);
int     libusb_get_driver(libusb_device_handle * devh, int interface, char *name, int namelen);
int     libusb_detach_kernel_driver_np(libusb_device_handle * devh, int interface);
int     libusb_detach_kernel_driver(libusb_device_handle * devh, int interface);
int     libusb_attach_kernel_driver(libusb_device_handle * devh, int interface);
int     libusb_set_auto_detach_kernel_driver(libusb_device_handle *dev, int enable);
int     libusb_set_interface_alt_setting(libusb_device_handle * devh, int interface_number, int alternate_setting);
unsigned char *libusb_dev_mem_alloc(libusb_device_handle *devh);
int     libusb_dev_mem_free(libusb_device_handle *devh, unsigned char *buffer,
    size_t size);

/* USB Descriptors */

int     libusb_get_device_descriptor(libusb_device * dev, struct libusb_device_descriptor *desc);
int     libusb_get_active_config_descriptor(libusb_device * dev, struct libusb_config_descriptor **config);
int     libusb_get_config_descriptor(libusb_device * dev, uint8_t config_index, struct libusb_config_descriptor **config);
int     libusb_get_config_descriptor_by_value(libusb_device * dev, uint8_t bConfigurationValue, struct libusb_config_descriptor **config);
void    libusb_free_config_descriptor(struct libusb_config_descriptor *config);
int     libusb_get_ss_endpoint_companion_descriptor(struct libusb_context *ctx, const struct libusb_endpoint_descriptor *endpoint, struct libusb_ss_endpoint_companion_descriptor **ep_comp);
void    libusb_free_ss_endpoint_companion_descriptor(struct libusb_ss_endpoint_companion_descriptor *ep_comp);
int     libusb_get_string_descriptor(libusb_device_handle * devh, uint8_t desc_index, uint16_t langid, unsigned char *data, int length);
int     libusb_get_string_descriptor_ascii(libusb_device_handle * devh, uint8_t desc_index, uint8_t *data, int length);
int     libusb_get_descriptor(libusb_device_handle * devh, uint8_t desc_type, uint8_t desc_index, uint8_t *data, int length);
int     libusb_parse_ss_endpoint_comp(const void *buf, int len, struct libusb_ss_endpoint_companion_descriptor **ep_comp);
void    libusb_free_ss_endpoint_comp(struct libusb_ss_endpoint_companion_descriptor *ep_comp);
int     libusb_parse_bos_descriptor(const void *buf, int len, struct libusb_bos_descriptor **bos);
void    libusb_free_bos_descriptor(struct libusb_bos_descriptor *bos);
int     libusb_get_bos_descriptor(libusb_device_handle *handle, struct libusb_bos_descriptor **bos);
int     libusb_get_usb_2_0_extension_descriptor(struct libusb_context *ctx, struct libusb_bos_dev_capability_descriptor *dev_cap, struct libusb_usb_2_0_extension_descriptor **usb_2_0_extension);
void    libusb_free_usb_2_0_extension_descriptor(struct libusb_usb_2_0_extension_descriptor *usb_2_0_extension);
int     libusb_get_ss_usb_device_capability_descriptor(struct libusb_context *ctx, struct libusb_bos_dev_capability_descriptor *dev_cap, struct libusb_ss_usb_device_capability_descriptor **ss_usb_device_capability);
void    libusb_free_ss_usb_device_capability_descriptor(struct libusb_ss_usb_device_capability_descriptor *ss_usb_device_capability);
int     libusb_get_container_id_descriptor(struct libusb_context *ctx, struct libusb_bos_dev_capability_descriptor *dev_cap, struct libusb_container_id_descriptor **container_id);
void    libusb_free_container_id_descriptor(struct libusb_container_id_descriptor *container_id);
int     libusb_get_platform_descriptor(libusb_context *ctx, struct libusb_bos_dev_capability_descriptor *dev_cap, struct libusb_platform_descriptor **platform_descriptor);
void    libusb_free_platform_descriptor(struct libusb_platform_descriptor *platform_descriptor);

/* Asynchronous device I/O */

struct libusb_transfer *libusb_alloc_transfer(int iso_packets);
void    libusb_free_transfer(struct libusb_transfer *transfer);
int     libusb_submit_transfer(struct libusb_transfer *transfer);
int     libusb_cancel_transfer(struct libusb_transfer *transfer);
uint8_t *libusb_get_iso_packet_buffer(struct libusb_transfer *transfer, uint32_t index);
uint8_t *libusb_get_iso_packet_buffer_simple(struct libusb_transfer *transfer, uint32_t index);
void    libusb_set_iso_packet_lengths(struct libusb_transfer *transfer, uint32_t length);
uint8_t *libusb_control_transfer_get_data(struct libusb_transfer *transfer);
struct libusb_control_setup *libusb_control_transfer_get_setup(struct libusb_transfer *transfer);
void    libusb_fill_control_setup(uint8_t *buf, uint8_t bmRequestType, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, uint16_t wLength);
void    libusb_fill_control_transfer(struct libusb_transfer *transfer, libusb_device_handle *devh, uint8_t *buf, libusb_transfer_cb_fn callback, void *user_data, uint32_t timeout);
void    libusb_fill_bulk_transfer(struct libusb_transfer *transfer, libusb_device_handle *devh, uint8_t endpoint, uint8_t *buf, int length, libusb_transfer_cb_fn callback, void *user_data, uint32_t timeout);
void    libusb_fill_bulk_stream_transfer(struct libusb_transfer *transfer, libusb_device_handle *dev_handle, unsigned char endpoint, uint32_t stream_id, unsigned char *buffer, int length, libusb_transfer_cb_fn callback, void *user_data, unsigned int timeout);
void    libusb_fill_interrupt_transfer(struct libusb_transfer *transfer, libusb_device_handle *devh, uint8_t endpoint, uint8_t *buf, int length, libusb_transfer_cb_fn callback, void *user_data, uint32_t timeout);
void    libusb_fill_iso_transfer(struct libusb_transfer *transfer, libusb_device_handle *devh, uint8_t endpoint, uint8_t *buf, int length, int npacket, libusb_transfer_cb_fn callback, void *user_data, uint32_t timeout);

/* Polling and timing */

int     libusb_try_lock_events(libusb_context * ctx);
void    libusb_lock_events(libusb_context * ctx);
void    libusb_unlock_events(libusb_context * ctx);
int     libusb_event_handling_ok(libusb_context * ctx);
int     libusb_event_handler_active(libusb_context * ctx);
void    libusb_interrupt_event_handler(libusb_context *ctx);
void    libusb_lock_event_waiters(libusb_context * ctx);
void    libusb_unlock_event_waiters(libusb_context * ctx);
int     libusb_wait_for_event(libusb_context * ctx, struct timeval *tv);
int     libusb_handle_events_timeout_completed(libusb_context * ctx, struct timeval *tv, int *completed);
int     libusb_handle_events_completed(libusb_context * ctx, int *completed);
int     libusb_handle_events_timeout(libusb_context * ctx, struct timeval *tv);
int     libusb_handle_events(libusb_context * ctx);
int     libusb_handle_events_locked(libusb_context * ctx, struct timeval *tv);
int     libusb_pollfds_handle_timeouts(libusb_context *ctx);
int     libusb_get_next_timeout(libusb_context * ctx, struct timeval *tv);
void    libusb_set_pollfd_notifiers(libusb_context * ctx, libusb_pollfd_added_cb added_cb, libusb_pollfd_removed_cb removed_cb, void *user_data);
const struct libusb_pollfd **libusb_get_pollfds(libusb_context *ctx);
void    libusb_free_pollfds(const struct libusb_pollfd **pollfds);

/* Synchronous device I/O */

int     libusb_control_transfer(libusb_device_handle * devh, uint8_t bmRequestType, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, uint8_t *data, uint16_t wLength, uint32_t timeout);
int     libusb_bulk_transfer(libusb_device_handle * devh, uint8_t endpoint, uint8_t *data, int length, int *transferred, uint32_t timeout);
int     libusb_interrupt_transfer(libusb_device_handle * devh, uint8_t endpoint, uint8_t *data, int length, int *transferred, uint32_t timeout);

/* Byte-order */

uint16_t libusb_cpu_to_le16(uint16_t x);
uint16_t libusb_le16_to_cpu(uint16_t x);

/* Hotplug support */

typedef int (*libusb_hotplug_callback_fn)(libusb_context *ctx,
    libusb_device *device, libusb_hotplug_event event, void *user_data);

int     libusb_hotplug_register_callback(libusb_context *ctx, libusb_hotplug_event events, libusb_hotplug_flag flags, int vendor_id, int product_id, int dev_class, libusb_hotplug_callback_fn cb_fn, void *user_data, libusb_hotplug_callback_handle *handle);
void    libusb_hotplug_deregister_callback(libusb_context *ctx, libusb_hotplug_callback_handle handle);
void   *libusb_hotplug_get_user_data(struct libusb_context *ctx,
    libusb_hotplug_callback_handle callback_handle);

/* Streams support */

int     libusb_alloc_streams(libusb_device_handle *dev, uint32_t num_streams, unsigned char *endpoints, int num_endpoints);
int     libusb_free_streams(libusb_device_handle *dev, unsigned char *endpoints, int num_endpoints);
void    libusb_transfer_set_stream_id(struct libusb_transfer *transfer, uint32_t stream_id);
uint32_t libusb_transfer_get_stream_id(struct libusb_transfer *transfer);

#if 0
{                                       /* indent fix */
#endif
#ifdef __cplusplus
}

#endif

#endif                                  /* __LIBUSB_H__ */