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/* * Public libusb header file * Copyright © 2001 Johannes Erdfelt <johannes@erdfelt.com> * Copyright © 2007-2008 Daniel Drake <dsd@gentoo.org> * Copyright © 2012 Pete Batard <pete@akeo.ie> * Copyright © 2012-2018 Nathan Hjelm <hjelmn@cs.unm.edu> * Copyright © 2014-2020 Chris Dickens <christopher.a.dickens@gmail.com> * For more information, please visit: http://libusb.info * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef LIBUSB_H #define LIBUSB_H #ifdef _MSC_VER /* on MS environments, the inline keyword is available in C++ only */ #if !defined(__cplusplus) #define inline __inline #endif /* ssize_t is also not available */ #include <basetsd.h> typedef SSIZE_T ssize_t; #endif /* _MSC_VER */ #include <limits.h> #include <stdint.h> #include <sys/types.h> #if defined(__linux__) || defined(__APPLE__) || defined(__CYGWIN__) || defined(__HAIKU__) || defined(__GLIBC__) #include <sys/time.h> #endif #include <time.h> #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) #define ZERO_SIZED_ARRAY /* [] - valid C99 code */ #else #define ZERO_SIZED_ARRAY 0 /* [0] - non-standard, but usually working code */ #endif /* 'interface' might be defined as a macro on Windows, so we need to * undefine it so as not to break the current libusb API, because * libusb_config_descriptor has an 'interface' member * As this can be problematic if you include windows.h after libusb.h * in your sources, we force windows.h to be included first. */ #if defined(_WIN32) || defined(__CYGWIN__) #include <windows.h> #if defined(interface) #undef interface #endif #if !defined(__CYGWIN__) #include <winsock.h> #endif #endif #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5) #define LIBUSB_DEPRECATED_FOR(f) \ __attribute__((deprecated("Use " #f " instead"))) #elif __GNUC__ >= 3 #define LIBUSB_DEPRECATED_FOR(f) __attribute__((deprecated)) #else #define LIBUSB_DEPRECATED_FOR(f) #endif /* __GNUC__ */ /** \def LIBUSB_CALL * \ingroup libusb_misc * libusb's Windows calling convention. * * Under Windows, the selection of available compilers and configurations * means that, unlike other platforms, there is not <em>one true calling * convention</em> (calling convention: the manner in which parameters are * passed to functions in the generated assembly code). * * Matching the Windows API itself, libusb uses the WINAPI convention (which * translates to the <tt>stdcall</tt> convention) and guarantees that the * library is compiled in this way. The public header file also includes * appropriate annotations so that your own software will use the right * convention, even if another convention is being used by default within * your codebase. * * The one consideration that you must apply in your software is to mark * all functions which you use as libusb callbacks with this LIBUSB_CALL * annotation, so that they too get compiled for the correct calling * convention. * * On non-Windows operating systems, this macro is defined as nothing. This * means that you can apply it to your code without worrying about * cross-platform compatibility. */ /* LIBUSB_CALL must be defined on both definition and declaration of libusb * functions. You'd think that declaration would be enough, but cygwin will * complain about conflicting types unless both are marked this way. * The placement of this macro is important too; it must appear after the * return type, before the function name. See internal documentation for * API_EXPORTED. */ #if defined(_WIN32) || defined(__CYGWIN__) #define LIBUSB_CALL WINAPI #else #define LIBUSB_CALL #endif /** \def LIBUSB_API_VERSION * \ingroup libusb_misc * libusb's API version. * * Since version 1.0.13, to help with feature detection, libusb defines * a LIBUSB_API_VERSION macro that gets increased every time there is a * significant change to the API, such as the introduction of a new call, * the definition of a new macro/enum member, or any other element that * libusb applications may want to detect at compilation time. * * The macro is typically used in an application as follows: * \code * #if defined(LIBUSB_API_VERSION) && (LIBUSB_API_VERSION >= 0x01001234) * // Use one of the newer features from the libusb API * #endif * \endcode * * Internally, LIBUSB_API_VERSION is defined as follows: * (libusb major << 24) | (libusb minor << 16) | (16 bit incremental) */ #define LIBUSB_API_VERSION 0x01000108 /* The following is kept for compatibility, but will be deprecated in the future */ #define LIBUSBX_API_VERSION LIBUSB_API_VERSION #ifdef __cplusplus extern "C" { #endif /** * \ingroup libusb_misc * Convert a 16-bit value from host-endian to little-endian format. On * little endian systems, this function does nothing. On big endian systems, * the bytes are swapped. * \param x the host-endian value to convert * \returns the value in little-endian byte order */ static inline uint16_t libusb_cpu_to_le16(const uint16_t x) { union { uint8_t b8[2]; uint16_t b16; } _tmp; _tmp.b8[1] = (uint8_t) (x >> 8); _tmp.b8[0] = (uint8_t) (x & 0xff); return _tmp.b16; } /** \def libusb_le16_to_cpu * \ingroup libusb_misc * Convert a 16-bit value from little-endian to host-endian format. On * little endian systems, this function does nothing. On big endian systems, * the bytes are swapped. * \param x the little-endian value to convert * \returns the value in host-endian byte order */ #define libusb_le16_to_cpu libusb_cpu_to_le16 /* standard USB stuff */ /** \ingroup libusb_desc * Device and/or Interface Class codes */ enum libusb_class_code { /** In the context of a \ref libusb_device_descriptor "device descriptor", * this bDeviceClass value indicates that each interface specifies its * own class information and all interfaces operate independently. */ LIBUSB_CLASS_PER_INTERFACE = 0, /** Audio class */ LIBUSB_CLASS_AUDIO = 1, /** Communications class */ LIBUSB_CLASS_COMM = 2, /** Human Interface Device class */ LIBUSB_CLASS_HID = 3, /** Physical */ LIBUSB_CLASS_PHYSICAL = 5, /** Printer class */ LIBUSB_CLASS_PRINTER = 7, /** Image class */ LIBUSB_CLASS_PTP = 6, /* legacy name from libusb-0.1 usb.h */ LIBUSB_CLASS_IMAGE = 6, /** Mass storage class */ LIBUSB_CLASS_MASS_STORAGE = 8, /** Hub class */ LIBUSB_CLASS_HUB = 9, /** Data class */ LIBUSB_CLASS_DATA = 10, /** Smart Card */ LIBUSB_CLASS_SMART_CARD = 0x0b, /** Content Security */ LIBUSB_CLASS_CONTENT_SECURITY = 0x0d, /** Video */ LIBUSB_CLASS_VIDEO = 0x0e, /** Personal Healthcare */ LIBUSB_CLASS_PERSONAL_HEALTHCARE = 0x0f, /** Diagnostic Device */ LIBUSB_CLASS_DIAGNOSTIC_DEVICE = 0xdc, /** Wireless class */ LIBUSB_CLASS_WIRELESS = 0xe0, /** Application class */ LIBUSB_CLASS_APPLICATION = 0xfe, /** Class is vendor-specific */ LIBUSB_CLASS_VENDOR_SPEC = 0xff }; /** \ingroup libusb_desc * Descriptor types as defined by the USB specification. */ enum libusb_descriptor_type { /** Device descriptor. See libusb_device_descriptor. */ LIBUSB_DT_DEVICE = 0x01, /** Configuration descriptor. See libusb_config_descriptor. */ LIBUSB_DT_CONFIG = 0x02, /** String descriptor */ LIBUSB_DT_STRING = 0x03, /** Interface descriptor. See libusb_interface_descriptor. */ LIBUSB_DT_INTERFACE = 0x04, /** Endpoint de