libusb.h revision 267047
1/* $FreeBSD: stable/10/lib/libusb/libusb.h 267047 2014-06-04 10:40:43Z hselasky $ */ 2/*- 3 * Copyright (c) 2009 Sylvestre Gallon. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#ifndef __LIBUSB_H__ 28#define __LIBUSB_H__ 29 30#ifndef LIBUSB_GLOBAL_INCLUDE_FILE 31#include <stdint.h> 32#include <sys/time.h> 33#include <sys/types.h> 34#endif 35 36#define LIBUSB_CALL 37 38#ifdef __cplusplus 39extern "C" { 40#endif 41#if 0 42} /* indent fix */ 43 44#endif 45 46/* libusb enums */ 47 48enum libusb_class_code { 49 LIBUSB_CLASS_PER_INTERFACE = 0, 50 LIBUSB_CLASS_AUDIO = 1, 51 LIBUSB_CLASS_COMM = 2, 52 LIBUSB_CLASS_HID = 3, 53 LIBUSB_CLASS_PTP = 6, 54 LIBUSB_CLASS_PRINTER = 7, 55 LIBUSB_CLASS_MASS_STORAGE = 8, 56 LIBUSB_CLASS_HUB = 9, 57 LIBUSB_CLASS_DATA = 10, 58 LIBUSB_CLASS_VENDOR_SPEC = 0xff, 59}; 60 61enum libusb_descriptor_type { 62 LIBUSB_DT_DEVICE = 0x01, 63 LIBUSB_DT_CONFIG = 0x02, 64 LIBUSB_DT_STRING = 0x03, 65 LIBUSB_DT_INTERFACE = 0x04, 66 LIBUSB_DT_ENDPOINT = 0x05, 67 LIBUSB_DT_HID = 0x21, 68 LIBUSB_DT_REPORT = 0x22, 69 LIBUSB_DT_PHYSICAL = 0x23, 70 LIBUSB_DT_HUB = 0x29, 71 LIBUSB_DT_BOS = 0x0f, 72 LIBUSB_DT_DEVICE_CAPABILITY = 0x10, 73 LIBUSB_DT_SS_ENDPOINT_COMPANION = 0x30, 74}; 75 76enum libusb_device_capability_type { 77 LIBUSB_WIRELESS_USB_DEVICE_CAPABILITY = 0x1, 78 LIBUSB_USB_2_0_EXTENSION_DEVICE_CAPABILITY = 0x2, 79 LIBUSB_SS_USB_DEVICE_CAPABILITY = 0x3, 80 LIBUSB_CONTAINER_ID_DEVICE_CAPABILITY = 0x4, 81}; 82 83#define LIBUSB_DT_DEVICE_SIZE 18 84#define LIBUSB_DT_CONFIG_SIZE 9 85#define LIBUSB_DT_INTERFACE_SIZE 9 86#define LIBUSB_DT_ENDPOINT_SIZE 7 87#define LIBUSB_DT_ENDPOINT_AUDIO_SIZE 9 88#define LIBUSB_DT_HUB_NONVAR_SIZE 7 89#define LIBUSB_DT_SS_ENDPOINT_COMPANION_SIZE 6 90#define LIBUSB_DT_BOS_SIZE 5 91#define LIBUSB_USB_2_0_EXTENSION_DEVICE_CAPABILITY_SIZE 7 92#define LIBUSB_SS_USB_DEVICE_CAPABILITY_SIZE 10 93 94#define LIBUSB_ENDPOINT_ADDRESS_MASK 0x0f 95#define LIBUSB_ENDPOINT_DIR_MASK 0x80 96 97enum libusb_endpoint_direction { 98 LIBUSB_ENDPOINT_IN = 0x80, 99 LIBUSB_ENDPOINT_OUT = 0x00, 100}; 101 102#define LIBUSB_TRANSFER_TYPE_MASK 0x03 103 104enum libusb_transfer_type { 105 LIBUSB_TRANSFER_TYPE_CONTROL = 0, 106 LIBUSB_TRANSFER_TYPE_ISOCHRONOUS = 1, 107 LIBUSB_TRANSFER_TYPE_BULK = 2, 108 LIBUSB_TRANSFER_TYPE_INTERRUPT = 3, 109}; 110 111enum libusb_standard_request { 112 LIBUSB_REQUEST_GET_STATUS = 0x00, 113 LIBUSB_REQUEST_CLEAR_FEATURE = 0x01, 114 LIBUSB_REQUEST_SET_FEATURE = 0x03, 115 LIBUSB_REQUEST_SET_ADDRESS = 0x05, 116 LIBUSB_REQUEST_GET_DESCRIPTOR = 0x06, 117 LIBUSB_REQUEST_SET_DESCRIPTOR = 0x07, 118 LIBUSB_REQUEST_GET_CONFIGURATION = 0x08, 119 LIBUSB_REQUEST_SET_CONFIGURATION = 0x09, 120 LIBUSB_REQUEST_GET_INTERFACE = 0x0A, 121 LIBUSB_REQUEST_SET_INTERFACE = 0x0B, 122 LIBUSB_REQUEST_SYNCH_FRAME = 0x0C, 123}; 124 125enum libusb_request_type { 126 LIBUSB_REQUEST_TYPE_STANDARD = (0x00 << 5), 127 LIBUSB_REQUEST_TYPE_CLASS = (0x01 << 5), 128 LIBUSB_REQUEST_TYPE_VENDOR = (0x02 << 5), 129 LIBUSB_REQUEST_TYPE_RESERVED = (0x03 << 5), 130}; 131 132enum libusb_request_recipient { 133 LIBUSB_RECIPIENT_DEVICE = 0x00, 134 LIBUSB_RECIPIENT_INTERFACE = 0x01, 135 LIBUSB_RECIPIENT_ENDPOINT = 0x02, 136 LIBUSB_RECIPIENT_OTHER = 0x03, 137}; 138 139#define LIBUSB_ISO_SYNC_TYPE_MASK 0x0C 140 141enum libusb_iso_sync_type { 142 LIBUSB_ISO_SYNC_TYPE_NONE = 0, 143 LIBUSB_ISO_SYNC_TYPE_ASYNC = 1, 144 LIBUSB_ISO_SYNC_TYPE_ADAPTIVE = 2, 145 LIBUSB_ISO_SYNC_TYPE_SYNC = 3, 146}; 147 148#define LIBUSB_ISO_USAGE_TYPE_MASK 0x30 149 150enum libusb_iso_usage_type { 151 LIBUSB_ISO_USAGE_TYPE_DATA = 0, 152 LIBUSB_ISO_USAGE_TYPE_FEEDBACK = 1, 153 LIBUSB_ISO_USAGE_TYPE_IMPLICIT = 2, 154}; 155 156enum libusb_error { 157 LIBUSB_SUCCESS = 0, 158 LIBUSB_ERROR_IO = -1, 159 LIBUSB_ERROR_INVALID_PARAM = -2, 160 LIBUSB_ERROR_ACCESS = -3, 161 LIBUSB_ERROR_NO_DEVICE = -4, 162 LIBUSB_ERROR_NOT_FOUND = -5, 163 LIBUSB_ERROR_BUSY = -6, 164 LIBUSB_ERROR_TIMEOUT = -7, 165 LIBUSB_ERROR_OVERFLOW = -8, 166 LIBUSB_ERROR_PIPE = -9, 167 LIBUSB_ERROR_INTERRUPTED = -10, 168 LIBUSB_ERROR_NO_MEM = -11, 169 LIBUSB_ERROR_NOT_SUPPORTED = -12, 170 LIBUSB_ERROR_OTHER = -99, 171}; 172 173enum libusb_speed { 174 LIBUSB_SPEED_UNKNOWN = 0, 175 LIBUSB_SPEED_LOW = 1, 176 LIBUSB_SPEED_FULL = 2, 177 LIBUSB_SPEED_HIGH = 3, 178 LIBUSB_SPEED_SUPER = 4, 179}; 180 181enum libusb_transfer_status { 182 LIBUSB_TRANSFER_COMPLETED, 183 LIBUSB_TRANSFER_ERROR, 184 LIBUSB_TRANSFER_TIMED_OUT, 185 LIBUSB_TRANSFER_CANCELLED, 186 LIBUSB_TRANSFER_STALL, 187 LIBUSB_TRANSFER_NO_DEVICE, 188 LIBUSB_TRANSFER_OVERFLOW, 189}; 190 191enum libusb_transfer_flags { 192 LIBUSB_TRANSFER_SHORT_NOT_OK = 1 << 0, 193 LIBUSB_TRANSFER_FREE_BUFFER = 1 << 1, 194 LIBUSB_TRANSFER_FREE_TRANSFER = 1 << 2, 195}; 196 197enum libusb_debug_level { 198 LIBUSB_DEBUG_NO=0, 199 LIBUSB_DEBUG_FUNCTION=1, 200 LIBUSB_DEBUG_TRANSFER=2, 201}; 202 203/* libusb structures */ 204 205struct libusb_context; 206struct libusb_device; 207struct libusb_transfer; 208struct libusb_device_handle; 209 210struct libusb_pollfd { 211 int fd; 212 short events; 213}; 214 215typedef struct libusb_context libusb_context; 216typedef struct libusb_device libusb_device; 217typedef struct libusb_device_handle libusb_device_handle; 218typedef struct libusb_pollfd libusb_pollfd; 219typedef void (*libusb_pollfd_added_cb) (int fd, short events, void *user_data); 220typedef void (*libusb_pollfd_removed_cb) (int fd, void *user_data); 221 222typedef struct libusb_device_descriptor { 223 uint8_t bLength; 224 uint8_t bDescriptorType; 225 uint16_t bcdUSB; 226 uint8_t bDeviceClass; 227 uint8_t bDeviceSubClass; 228 uint8_t bDeviceProtocol; 229 uint8_t bMaxPacketSize0; 230 uint16_t idVendor; 231 uint16_t idProduct; 232 uint16_t bcdDevice; 233 uint8_t iManufacturer; 234 uint8_t iProduct; 235 uint8_t iSerialNumber; 236 uint8_t bNumConfigurations; 237} libusb_device_descriptor; 238 239typedef struct libusb_endpoint_descriptor { 240 uint8_t bLength; 241 uint8_t bDescriptorType; 242 uint8_t bEndpointAddress; 243 uint8_t bmAttributes; 244 uint16_t wMaxPacketSize; 245 uint8_t bInterval; 246 uint8_t bRefresh; 247 uint8_t bSynchAddress; 248 uint8_t *extra; 249 int extra_length; 250} libusb_endpoint_descriptor __aligned(sizeof(void *)); 251 252typedef struct libusb_ss_endpoint_companion_descriptor { 253 uint8_t bLength; 254 uint8_t bDescriptorType; 255 uint8_t bMaxBurst; 256 uint8_t bmAttributes; 257 uint16_t wBytesPerInterval; 258} libusb_ss_endpoint_companion_descriptor __aligned(sizeof(void *)); 259 260typedef struct libusb_interface_descriptor { 261 uint8_t bLength; 262 uint8_t bDescriptorType; 263 uint8_t bInterfaceNumber; 264 uint8_t bAlternateSetting; 265 uint8_t bNumEndpoints; 266 uint8_t bInterfaceClass; 267 uint8_t bInterfaceSubClass; 268 uint8_t bInterfaceProtocol; 269 uint8_t iInterface; 270 struct libusb_endpoint_descriptor *endpoint; 271 uint8_t *extra; 272 int extra_length; 273} libusb_interface_descriptor __aligned(sizeof(void *)); 274 275typedef struct libusb_interface { 276 struct libusb_interface_descriptor *altsetting; 277 int num_altsetting; 278} libusb_interface __aligned(sizeof(void *)); 279 280typedef struct libusb_config_descriptor { 281 uint8_t bLength; 282 uint8_t bDescriptorType; 283 uint16_t wTotalLength; 284 uint8_t bNumInterfaces; 285 uint8_t bConfigurationValue; 286 uint8_t iConfiguration; 287 uint8_t bmAttributes; 288 uint8_t MaxPower; 289 struct libusb_interface *interface; 290 uint8_t *extra; 291 int extra_length; 292} libusb_config_descriptor __aligned(sizeof(void *)); 293 294typedef struct libusb_usb_2_0_device_capability_descriptor { 295 uint8_t bLength; 296 uint8_t bDescriptorType; 297 uint8_t bDevCapabilityType; 298 uint32_t bmAttributes; 299#define LIBUSB_USB_2_0_CAPABILITY_LPM_SUPPORT (1 << 1) 300} libusb_usb_2_0_device_capability_descriptor __aligned(sizeof(void *)); 301 302typedef struct libusb_ss_usb_device_capability_descriptor { 303 uint8_t bLength; 304 uint8_t bDescriptorType; 305 uint8_t bDevCapabilityType; 306 uint8_t bmAttributes; 307#define LIBUSB_SS_USB_CAPABILITY_LPM_SUPPORT (1 << 1) 308 uint16_t wSpeedSupported; 309#define LIBUSB_CAPABILITY_LOW_SPEED_OPERATION (1) 310#define LIBUSB_CAPABILITY_FULL_SPEED_OPERATION (1 << 1) 311#define LIBUSB_CAPABILITY_HIGH_SPEED_OPERATION (1 << 2) 312#define LIBUSB_CAPABILITY_5GBPS_OPERATION (1 << 3) 313 uint8_t bFunctionalitySupport; 314 uint8_t bU1DevExitLat; 315 uint16_t wU2DevExitLat; 316} libusb_ss_usb_device_capability_descriptor __aligned(sizeof(void *)); 317 318typedef struct libusb_bos_descriptor { 319 uint8_t bLength; 320 uint8_t bDescriptorType; 321 uint16_t wTotalLength; 322 uint8_t bNumDeviceCapabilities; 323 struct libusb_usb_2_0_device_capability_descriptor *usb_2_0_ext_cap; 324 struct libusb_ss_usb_device_capability_descriptor *ss_usb_cap; 325} libusb_bos_descriptor __aligned(sizeof(void *)); 326 327typedef struct libusb_control_setup { 328 uint8_t bmRequestType; 329 uint8_t bRequest; 330 uint16_t wValue; 331 uint16_t wIndex; 332 uint16_t wLength; 333} libusb_control_setup; 334 335#define LIBUSB_CONTROL_SETUP_SIZE 8 /* bytes */ 336 337typedef struct libusb_iso_packet_descriptor { 338 uint32_t length; 339 uint32_t actual_length; 340 enum libusb_transfer_status status; 341} libusb_iso_packet_descriptor __aligned(sizeof(void *)); 342 343typedef void (*libusb_transfer_cb_fn) (struct libusb_transfer *transfer); 344 345typedef struct libusb_transfer { 346 libusb_device_handle *dev_handle; 347 uint8_t flags; 348 uint8_t endpoint; 349 uint8_t type; 350 uint32_t timeout; 351 enum libusb_transfer_status status; 352 int length; 353 int actual_length; 354 libusb_transfer_cb_fn callback; 355 void *user_data; 356 uint8_t *buffer; 357 int num_iso_packets; 358 struct libusb_iso_packet_descriptor iso_packet_desc[0]; 359} libusb_transfer __aligned(sizeof(void *)); 360 361/* Library initialisation */ 362 363void libusb_set_debug(libusb_context * ctx, int level); 364const char *libusb_strerror(int code); 365const char *libusb_error_name(int code); 366int libusb_init(libusb_context ** context); 367void libusb_exit(struct libusb_context *ctx); 368 369/* Device handling and enumeration */ 370 371ssize_t libusb_get_device_list(libusb_context * ctx, libusb_device *** list); 372void libusb_free_device_list(libusb_device ** list, int unref_devices); 373uint8_t libusb_get_bus_number(libusb_device * dev); 374int libusb_get_port_numbers(libusb_device *dev, uint8_t *buf, uint8_t bufsize); 375int libusb_get_port_path(libusb_context *ctx, libusb_device *dev, uint8_t *buf, uint8_t bufsize); 376uint8_t libusb_get_device_address(libusb_device * dev); 377enum libusb_speed libusb_get_device_speed(libusb_device * dev); 378int libusb_clear_halt(libusb_device_handle *devh, uint8_t endpoint); 379int libusb_get_max_packet_size(libusb_device * dev, uint8_t endpoint); 380int libusb_get_max_iso_packet_size(libusb_device * dev, uint8_t endpoint); 381libusb_device *libusb_ref_device(libusb_device * dev); 382void libusb_unref_device(libusb_device * dev); 383int libusb_open(libusb_device * dev, libusb_device_handle ** devh); 384libusb_device_handle *libusb_open_device_with_vid_pid(libusb_context * ctx, uint16_t vendor_id, uint16_t product_id); 385void libusb_close(libusb_device_handle * devh); 386libusb_device *libusb_get_device(libusb_device_handle * devh); 387int libusb_get_configuration(libusb_device_handle * devh, int *config); 388int libusb_set_configuration(libusb_device_handle * devh, int configuration); 389int libusb_claim_interface(libusb_device_handle * devh, int interface_number); 390int libusb_release_interface(libusb_device_handle * devh, int interface_number); 391int libusb_reset_device(libusb_device_handle * devh); 392int libusb_check_connected(libusb_device_handle * devh); 393int libusb_kernel_driver_active(libusb_device_handle * devh, int interface); 394int libusb_get_driver_np(libusb_device_handle * devh, int interface, char *name, int namelen); 395int libusb_get_driver(libusb_device_handle * devh, int interface, char *name, int namelen); 396int libusb_detach_kernel_driver_np(libusb_device_handle * devh, int interface); 397int libusb_detach_kernel_driver(libusb_device_handle * devh, int interface); 398int libusb_attach_kernel_driver(libusb_device_handle * devh, int interface); 399int libusb_set_interface_alt_setting(libusb_device_handle * devh, int interface_number, int alternate_setting); 400 401/* USB Descriptors */ 402 403int libusb_get_device_descriptor(libusb_device * dev, struct libusb_device_descriptor *desc); 404int libusb_get_active_config_descriptor(libusb_device * dev, struct libusb_config_descriptor **config); 405int libusb_get_config_descriptor(libusb_device * dev, uint8_t config_index, struct libusb_config_descriptor **config); 406int libusb_get_config_descriptor_by_value(libusb_device * dev, uint8_t bConfigurationValue, struct libusb_config_descriptor **config); 407void libusb_free_config_descriptor(struct libusb_config_descriptor *config); 408int libusb_get_string_descriptor(libusb_device_handle * devh, uint8_t desc_index, uint16_t langid, unsigned char *data, int length); 409int libusb_get_string_descriptor_ascii(libusb_device_handle * devh, uint8_t desc_index, uint8_t *data, int length); 410int libusb_get_descriptor(libusb_device_handle * devh, uint8_t desc_type, uint8_t desc_index, uint8_t *data, int length); 411int libusb_parse_ss_endpoint_comp(const void *buf, int len, struct libusb_ss_endpoint_companion_descriptor **ep_comp); 412void libusb_free_ss_endpoint_comp(struct libusb_ss_endpoint_companion_descriptor *ep_comp); 413int libusb_parse_bos_descriptor(const void *buf, int len, struct libusb_bos_descriptor **bos); 414void libusb_free_bos_descriptor(struct libusb_bos_descriptor *bos); 415 416/* Asynchronous device I/O */ 417 418struct libusb_transfer *libusb_alloc_transfer(int iso_packets); 419void libusb_free_transfer(struct libusb_transfer *transfer); 420int libusb_submit_transfer(struct libusb_transfer *transfer); 421int libusb_cancel_transfer(struct libusb_transfer *transfer); 422uint8_t *libusb_get_iso_packet_buffer(struct libusb_transfer *transfer, uint32_t index); 423uint8_t *libusb_get_iso_packet_buffer_simple(struct libusb_transfer *transfer, uint32_t index); 424void libusb_set_iso_packet_lengths(struct libusb_transfer *transfer, uint32_t length); 425uint8_t *libusb_control_transfer_get_data(struct libusb_transfer *transfer); 426struct libusb_control_setup *libusb_control_transfer_get_setup(struct libusb_transfer *transfer); 427void libusb_fill_control_setup(uint8_t *buf, uint8_t bmRequestType, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, uint16_t wLength); 428void 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); 429void 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); 430void 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); 431void 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); 432 433/* Polling and timing */ 434 435int libusb_try_lock_events(libusb_context * ctx); 436void libusb_lock_events(libusb_context * ctx); 437void libusb_unlock_events(libusb_context * ctx); 438int libusb_event_handling_ok(libusb_context * ctx); 439int libusb_event_handler_active(libusb_context * ctx); 440void libusb_lock_event_waiters(libusb_context * ctx); 441void libusb_unlock_event_waiters(libusb_context * ctx); 442int libusb_wait_for_event(libusb_context * ctx, struct timeval *tv); 443int libusb_handle_events_timeout_completed(libusb_context * ctx, struct timeval *tv, int *completed); 444int libusb_handle_events_completed(libusb_context * ctx, int *completed); 445int libusb_handle_events_timeout(libusb_context * ctx, struct timeval *tv); 446int libusb_handle_events(libusb_context * ctx); 447int libusb_handle_events_locked(libusb_context * ctx, struct timeval *tv); 448int libusb_get_next_timeout(libusb_context * ctx, struct timeval *tv); 449void libusb_set_pollfd_notifiers(libusb_context * ctx, libusb_pollfd_added_cb added_cb, libusb_pollfd_removed_cb removed_cb, void *user_data); 450const struct libusb_pollfd **libusb_get_pollfds(libusb_context * ctx); 451 452/* Synchronous device I/O */ 453 454int 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); 455int libusb_bulk_transfer(libusb_device_handle * devh, uint8_t endpoint, uint8_t *data, int length, int *transferred, uint32_t timeout); 456int libusb_interrupt_transfer(libusb_device_handle * devh, uint8_t endpoint, uint8_t *data, int length, int *transferred, uint32_t timeout); 457 458/* Byte-order */ 459 460uint16_t libusb_cpu_to_le16(uint16_t x); 461uint16_t libusb_le16_to_cpu(uint16_t x); 462 463#if 0 464{ /* indent fix */ 465#endif 466#ifdef __cplusplus 467} 468 469#endif 470 471#endif /* __LIBUSB_H__ */ 472