diff options
| author | Benjamin Dobell <benjamin.dobell+git@glassechidna.com.au> | 2013-01-22 13:55:29 +0100 |
|---|---|---|
| committer | ben <ben@snaploader.vm> | 2013-01-22 14:44:12 +0100 |
| commit | 4d850a272aabe91eab08bcc735b4297d51e6e35f (patch) | |
| tree | b5a5e48ffa4e7f0f8d3db8b322c7a9fb9b593282 /libusbx-1.0 | |
| parent | - Changed interpretation of packet size reponses of 0 from meaning "don't (diff) | |
| download | Heimdall-4d850a272aabe91eab08bcc735b4297d51e6e35f.tar Heimdall-4d850a272aabe91eab08bcc735b4297d51e6e35f.tar.gz Heimdall-4d850a272aabe91eab08bcc735b4297d51e6e35f.tar.bz2 Heimdall-4d850a272aabe91eab08bcc735b4297d51e6e35f.tar.lz Heimdall-4d850a272aabe91eab08bcc735b4297d51e6e35f.tar.xz Heimdall-4d850a272aabe91eab08bcc735b4297d51e6e35f.tar.zst Heimdall-4d850a272aabe91eab08bcc735b4297d51e6e35f.zip | |
Diffstat (limited to 'libusbx-1.0')
| -rw-r--r-- | libusbx-1.0/AUTHORS | 54 | ||||
| -rw-r--r-- | libusbx-1.0/COPYING | 504 | ||||
| -rw-r--r-- | libusbx-1.0/include/libusb.h | 1506 |
3 files changed, 2064 insertions, 0 deletions
diff --git a/libusbx-1.0/AUTHORS b/libusbx-1.0/AUTHORS new file mode 100644 index 0000000..c0c1e00 --- /dev/null +++ b/libusbx-1.0/AUTHORS @@ -0,0 +1,54 @@ + +<!-- saved from url=(0053)https://raw.github.com/libusbx/libusbx/master/AUTHORS --> +<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">Copyright © 2001 Johannes Erdfelt <johannes@erdfelt.com> +Copyright © 2007-2009 Daniel Drake <dsd@gentoo.org> +Copyright © 2010-2012 Peter Stuge <peter@stuge.se> +Copyright © 2008-2011 Nathan Hjelm <hjelmn@users.sourceforge.net> +Copyright © 2009-2012 Pete Batard <pete@akeo.ie> +Copyright © 2009-2012 Ludovic Rousseau <ludovic.rousseau@gmail.com> +Copyright © 2010-2012 Michael Plante <michael.plante@gmail.com> +Copyright © 2011-2012 Hans de Goede <hdegoede@redhat.com> +Copyright © 2012 Martin Pieuchot <mpi@openbsd.org> + +Other contributors: +Alan Ott +Alan Stern +Alex Vatchenko +Anthony Clay +Artem Egorkine +Aurelien Jarno +Bastien Nocera +Dave Camarillo +David Engraf +David Moore +Davidlohr Bueso +Felipe Balbi +Francesco Montorsi +Graeme Gill +Hans Ulrich Niedermann +Hector Martin +Hoi-Ho Chan +James Hanko +Konrad Rzepecki +Lars Wirzenius +Martin Koegler +Matthias Bolte +Mike Frysinger +Mikhail Gusarov +Nicholas Corgan +Orin Eman +Pekka Nikander +Rob Walker +Sean McBride +Sebastian Pipping +Simon Haggett +Thomas Röfer +Toby Gray +Toby Peterson +Trygve Laugstøl +Uri Lublin +Vasily Khoruzhick +Vitali Lovich +Xiaofan Chen +Роман Донченко +</pre></body></html>
\ No newline at end of file diff --git a/libusbx-1.0/COPYING b/libusbx-1.0/COPYING new file mode 100644 index 0000000..5ab7695 --- /dev/null +++ b/libusbx-1.0/COPYING @@ -0,0 +1,504 @@ + GNU LESSER GENERAL PUBLIC LICENSE + Version 2.1, February 1999 + + Copyright (C) 1991, 1999 Free Software Foundation, Inc. + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + +[This is the first released version of the Lesser GPL. It also counts + as the successor of the GNU Library Public License, version 2, hence + the version number 2.1.] + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +Licenses are intended to guarantee your freedom to share and change +free software--to make sure the software is free for all its users. + + This license, the Lesser General Public License, applies to some +specially designated software packages--typically libraries--of the +Free Software Foundation and other authors who decide to use it. You +can use it too, but we suggest you first think carefully about whether +this license or the ordinary General Public License is the better +strategy to use in any particular case, based on the explanations below. + + When we speak of free software, we are referring to freedom of use, +not price. Our General Public Licenses are designed to make sure that +you have the freedom to distribute copies of free software (and charge +for this service if you wish); that you receive source code or can get +it if you want it; that you can change the software and use pieces of +it in new free programs; and that you are informed that you can do +these things. + + To protect your rights, we need to make restrictions that forbid +distributors to deny you these rights or to ask you to surrender these +rights. These restrictions translate to certain responsibilities for +you if you distribute copies of the library or if you modify it. + + For example, if you distribute copies of the library, whether gratis +or for a fee, you must give the recipients all the rights that we gave +you. You must make sure that they, too, receive or can get the source +code. If you link other code with the library, you must provide +complete object files to the recipients, so that they can relink them +with the library after making changes to the library and recompiling +it. And you must show them these terms so they know their rights. + + We protect your rights with a two-step method: (1) we copyright the +library, and (2) we offer you this license, which gives you legal +permission to copy, distribute and/or modify the library. + + To protect each distributor, we want to make it very clear that +there is no warranty for the free library. Also, if the library is +modified by someone else and passed on, the recipients should know +that what they have is not the original version, so that the original +author's reputation will not be affected by problems that might be +introduced by others. + + Finally, software patents pose a constant threat to the existence of +any free program. We wish to make sure that a company cannot +effectively restrict the users of a free program by obtaining a +restrictive license from a patent holder. Therefore, we insist that +any patent license obtained for a version of the library must be +consistent with the full freedom of use specified in this license. + + Most GNU software, including some libraries, is covered by the +ordinary GNU General Public License. This license, the GNU Lesser +General Public License, applies to certain designated libraries, and +is quite different from the ordinary General Public License. We use +this license for certain libraries in order to permit linking those +libraries into non-free programs. + + When a program is linked with a library, whether statically or using +a shared library, the combination of the two is legally speaking a +combined work, a derivative of the original library. The ordinary +General Public License therefore permits such linking only if the +entire combination fits its criteria of freedom. The Lesser General +Public License permits more lax criteria for linking other code with +the library. + + We call this license the "Lesser" General Public License because it +does Less to protect the user's freedom than the ordinary General +Public License. It also provides other free software developers Less +of an advantage over competing non-free programs. These disadvantages +are the reason we use the ordinary General Public License for many +libraries. However, the Lesser license provides advantages in certain +special circumstances. + + For example, on rare occasions, there may be a special need to +encourage the widest possible use of a certain library, so that it becomes +a de-facto standard. To achieve this, non-free programs must be +allowed to use the library. A more frequent case is that a free +library does the same job as widely used non-free libraries. In this +case, there is little to gain by limiting the free library to free +software only, so we use the Lesser General Public License. + + In other cases, permission to use a particular library in non-free +programs enables a greater number of people to use a large body of +free software. For example, permission to use the GNU C Library in +non-free programs enables many more people to use the whole GNU +operating system, as well as its variant, the GNU/Linux operating +system. + + Although the Lesser General Public License is Less protective of the +users' freedom, it does ensure that the user of a program that is +linked with the Library has the freedom and the wherewithal to run +that program using a modified version of the Library. + + The precise terms and conditions for copying, distribution and +modification follow. Pay close attention to the difference between a +"work based on the library" and a "work that uses the library". The +former contains code derived from the library, whereas the latter must +be combined with the library in order to run. + + GNU LESSER GENERAL PUBLIC LICENSE + TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION + + 0. This License Agreement applies to any software library or other +program which contains a notice placed by the copyright holder or +other authorized party saying it may be distributed under the terms of +this Lesser General Public License (also called "this License"). +Each licensee is addressed as "you". + + A "library" means a collection of software functions and/or data +prepared so as to be conveniently linked with application programs +(which use some of those functions and data) to form executables. + + The "Library", below, refers to any such software library or work +which has been distributed under these terms. A "work based on the +Library" means either the Library or any derivative work under +copyright law: that is to say, a work containing the Library or a +portion of it, either verbatim or with modifications and/or translated +straightforwardly into another language. (Hereinafter, translation is +included without limitation in the term "modification".) + + "Source code" for a work means the preferred form of the work for +making modifications to it. For a library, complete source code means +all the source code for all modules it contains, plus any associated +interface definition files, plus the scripts used to control compilation +and installation of the library. + + Activities other than copying, distribution and modification are not +covered by this License; they are outside its scope. The act of +running a program using the Library is not restricted, and output from +such a program is covered only if its contents constitute a work based +on the Library (independent of the use of the Library in a tool for +writing it). Whether that is true depends on what the Library does +and what the program that uses the Library does. + + 1. You may copy and distribute verbatim copies of the Library's +complete source code as you receive it, in any medium, provided that +you conspicuously and appropriately publish on each copy an +appropriate copyright notice and disclaimer of warranty; keep intact +all the notices that refer to this License and to the absence of any +warranty; and distribute a copy of this License along with the +Library. + + You may charge a fee for the physical act of transferring a copy, +and you may at your option offer warranty protection in exchange for a +fee. + + 2. You may modify your copy or copies of the Library or any portion +of it, thus forming a work based on the Library, and copy and +distribute such modifications or work under the terms of Section 1 +above, provided that you also meet all of these conditions: + + a) The modified work must itself be a software library. + + b) You must cause the files modified to carry prominent notices + stating that you changed the files and the date of any change. + + c) You must cause the whole of the work to be licensed at no + charge to all third parties under the terms of this License. + + d) If a facility in the modified Library refers to a function or a + table of data to be supplied by an application program that uses + the facility, other than as an argument passed when the facility + is invoked, then you must make a good faith effort to ensure that, + in the event an application does not supply such function or + table, the facility still operates, and performs whatever part of + its purpose remains meaningful. + + (For example, a function in a library to compute square roots has + a purpose that is entirely well-defined independent of the + application. Therefore, Subsection 2d requires that any + application-supplied function or table used by this function must + be optional: if the application does not supply it, the square + root function must still compute square roots.) + +These requirements apply to the modified work as a whole. If +identifiable sections of that work are not derived from the Library, +and can be reasonably considered independent and separate works in +themselves, then this License, and its terms, do not apply to those +sections when you distribute them as separate works. But when you +distribute the same sections as part of a whole which is a work based +on the Library, the distribution of the whole must be on the terms of +this License, whose permissions for other licensees extend to the +entire whole, and thus to each and every part regardless of who wrote +it. + +Thus, it is not the intent of this section to claim rights or contest +your rights to work written entirely by you; rather, the intent is to +exercise the right to control the distribution of derivative or +collective works based on the Library. + +In addition, mere aggregation of another work not based on the Library +with the Library (or with a work based on the Library) on a volume of +a storage or distribution medium does not bring the other work under +the scope of this License. + + 3. You may opt to apply the terms of the ordinary GNU General Public +License instead of this License to a given copy of the Library. To do +this, you must alter all the notices that refer to this License, so +that they refer to the ordinary GNU General Public License, version 2, +instead of to this License. (If a newer version than version 2 of the +ordinary GNU General Public License has appeared, then you can specify +that version instead if you wish.) Do not make any other change in +these notices. + + Once this change is made in a given copy, it is irreversible for +that copy, so the ordinary GNU General Public License applies to all +subsequent copies and derivative works made from that copy. + + This option is useful when you wish to copy part of the code of +the Library into a program that is not a library. + + 4. You may copy and distribute the Library (or a portion or +derivative of it, under Section 2) in object code or executable form +under the terms of Sections 1 and 2 above provided that you accompany +it with the complete corresponding machine-readable source code, which +must be distributed under the terms of Sections 1 and 2 above on a +medium customarily used for software interchange. + + If distribution of object code is made by offering access to copy +from a designated place, then offering equivalent access to copy the +source code from the same place satisfies the requirement to +distribute the source code, even though third parties are not +compelled to copy the source along with the object code. + + 5. A program that contains no derivative of any portion of the +Library, but is designed to work with the Library by being compiled or +linked with it, is called a "work that uses the Library". Such a +work, in isolation, is not a derivative work of the Library, and +therefore falls outside the scope of this License. + + However, linking a "work that uses the Library" with the Library +creates an executable that is a derivative of the Library (because it +contains portions of the Library), rather than a "work that uses the +library". The executable is therefore covered by this License. +Section 6 states terms for distribution of such executables. + + When a "work that uses the Library" uses material from a header file +that is part of the Library, the object code for the work may be a +derivative work of the Library even though the source code is not. +Whether this is true is especially significant if the work can be +linked without the Library, or if the work is itself a library. The +threshold for this to be true is not precisely defined by law. + + If such an object file uses only numerical parameters, data +structure layouts and accessors, and small macros and small inline +functions (ten lines or less in length), then the use of the object +file is unrestricted, regardless of whether it is legally a derivative +work. (Executables containing this object code plus portions of the +Library will still fall under Section 6.) + + Otherwise, if the work is a derivative of the Library, you may +distribute the object code for the work under the terms of Section 6. +Any executables containing that work also fall under Section 6, +whether or not they are linked directly with the Library itself. + + 6. As an exception to the Sections above, you may also combine or +link a "work that uses the Library" with the Library to produce a +work containing portions of the Library, and distribute that work +under terms of your choice, provided that the terms permit +modification of the work for the customer's own use and reverse +engineering for debugging such modifications. + + You must give prominent notice with each copy of the work that the +Library is used in it and that the Library and its use are covered by +this License. You must supply a copy of this License. If the work +during execution displays copyright notices, you must include the +copyright notice for the Library among them, as well as a reference +directing the user to the copy of this License. Also, you must do one +of these things: + + a) Accompany the work with the complete corresponding + machine-readable source code for the Library including whatever + changes were used in the work (which must be distributed under + Sections 1 and 2 above); and, if the work is an executable linked + with the Library, with the complete machine-readable "work that + uses the Library", as object code and/or source code, so that the + user can modify the Library and then relink to produce a modified + executable containing the modified Library. (It is understood + that the user who changes the contents of definitions files in the + Library will not necessarily be able to recompile the application + to use the modified definitions.) + + b) Use a suitable shared library mechanism for linking with the + Library. A suitable mechanism is one that (1) uses at run time a + copy of the library already present on the user's computer system, + rather than copying library functions into the executable, and (2) + will operate properly with a modified version of the library, if + the user installs one, as long as the modified version is + interface-compatible with the version that the work was made with. + + c) Accompany the work with a written offer, valid for at + least three years, to give the same user the materials + specified in Subsection 6a, above, for a charge no more + than the cost of performing this distribution. + + d) If distribution of the work is made by offering access to copy + from a designated place, offer equivalent access to copy the above + specified materials from the same place. + + e) Verify that the user has already received a copy of these + materials or that you have already sent this user a copy. + + For an executable, the required form of the "work that uses the +Library" must include any data and utility programs needed for +reproducing the executable from it. However, as a special exception, +the materials to be distributed need not include anything that is +normally distributed (in either source or binary form) with the major +components (compiler, kernel, and so on) of the operating system on +which the executable runs, unless that component itself accompanies +the executable. + + It may happen that this requirement contradicts the license +restrictions of other proprietary libraries that do not normally +accompany the operating system. Such a contradiction means you cannot +use both them and the Library together in an executable that you +distribute. + + 7. You may place library facilities that are a work based on the +Library side-by-side in a single library together with other library +facilities not covered by this License, and distribute such a combined +library, provided that the separate distribution of the work based on +the Library and of the other library facilities is otherwise +permitted, and provided that you do these two things: + + a) Accompany the combined library with a copy of the same work + based on the Library, uncombined with any other library + facilities. This must be distributed under the terms of the + Sections above. + + b) Give prominent notice with the combined library of the fact + that part of it is a work based on the Library, and explaining + where to find the accompanying uncombined form of the same work. + + 8. You may not copy, modify, sublicense, link with, or distribute +the Library except as expressly provided under this License. Any +attempt otherwise to copy, modify, sublicense, link with, or +distribute the Library is void, and will automatically terminate your +rights under this License. However, parties who have received copies, +or rights, from you under this License will not have their licenses +terminated so long as such parties remain in full compliance. + + 9. You are not required to accept this License, since you have not +signed it. However, nothing else grants you permission to modify or +distribute the Library or its derivative works. These actions are +prohibited by law if you do not accept this License. Therefore, by +modifying or distributing the Library (or any work based on the +Library), you indicate your acceptance of this License to do so, and +all its terms and conditions for copying, distributing or modifying +the Library or works based on it. + + 10. Each time you redistribute the Library (or any work based on the +Library), the recipient automatically receives a license from the +original licensor to copy, distribute, link with or modify the Library +subject to these terms and conditions. You may not impose any further +restrictions on the recipients' exercise of the rights granted herein. +You are not responsible for enforcing compliance by third parties with +this License. + + 11. If, as a consequence of a court judgment or allegation of patent +infringement or for any other reason (not limited to patent issues), +conditions are imposed on you (whether by court order, agreement or +otherwise) that contradict the conditions of this License, they do not +excuse you from the conditions of this License. If you cannot +distribute so as to satisfy simultaneously your obligations under this +License and any other pertinent obligations, then as a consequence you +may not distribute the Library at all. For example, if a patent +license would not permit royalty-free redistribution of the Library by +all those who receive copies directly or indirectly through you, then +the only way you could satisfy both it and this License would be to +refrain entirely from distribution of the Library. + +If any portion of this section is held invalid or unenforceable under any +particular circumstance, the balance of the section is intended to apply, +and the section as a whole is intended to apply in other circumstances. + +It is not the purpose of this section to induce you to infringe any +patents or other property right claims or to contest validity of any +such claims; this section has the sole purpose of protecting the +integrity of the free software distribution system which is +implemented by public license practices. Many people have made +generous contributions to the wide range of software distributed +through that system in reliance on consistent application of that +system; it is up to the author/donor to decide if he or she is willing +to distribute software through any other system and a licensee cannot +impose that choice. + +This section is intended to make thoroughly clear what is believed to +be a consequence of the rest of this License. + + 12. If the distribution and/or use of the Library is restricted in +certain countries either by patents or by copyrighted interfaces, the +original copyright holder who places the Library under this License may add +an explicit geographical distribution limitation excluding those countries, +so that distribution is permitted only in or among countries not thus +excluded. In such case, this License incorporates the limitation as if +written in the body of this License. + + 13. The Free Software Foundation may publish revised and/or new +versions of the Lesser General Public License from time to time. +Such new versions will be similar in spirit to the present version, +but may differ in detail to address new problems or concerns. + +Each version is given a distinguishing version number. If the Library +specifies a version number of this License which applies to it and +"any later version", you have the option of following the terms and +conditions either of that version or of any later version published by +the Free Software Foundation. If the Library does not specify a +license version number, you may choose any version ever published by +the Free Software Foundation. + + 14. If you wish to incorporate parts of the Library into other free +programs whose distribution conditions are incompatible with these, +write to the author to ask for permission. For software which is +copyrighted by the Free Software Foundation, write to the Free +Software Foundation; we sometimes make exceptions for this. Our +decision will be guided by the two goals of preserving the free status +of all derivatives of our free software and of promoting the sharing +and reuse of software generally. + + NO WARRANTY + + 15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO +WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW. +EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR +OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY +KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE +LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME +THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. + + 16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN +WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY +AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU +FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR +CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE +LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING +RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A +FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF +SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH +DAMAGES. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Libraries + + If you develop a new library, and you want it to be of the greatest +possible use to the public, we recommend making it free software that +everyone can redistribute and change. You can do so by permitting +redistribution under these terms (or, alternatively, under the terms of the +ordinary General Public License). + + To apply these terms, attach the following notices to the library. It is +safest to attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least the +"copyright" line and a pointer to where the full notice is found. + + <one line to give the library's name and a brief idea of what it does.> + Copyright (C) <year> <name of author> + + 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 + +Also add information on how to contact you by electronic and paper mail. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the library, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the + library `Frob' (a library for tweaking knobs) written by James Random Hacker. + + <signature of Ty Coon>, 1 April 1990 + Ty Coon, President of Vice + +That's all there is to it! + + diff --git a/libusbx-1.0/include/libusb.h b/libusbx-1.0/include/libusb.h new file mode 100644 index 0000000..da94c9b --- /dev/null +++ b/libusbx-1.0/include/libusb.h @@ -0,0 +1,1506 @@ +/* + * Public libusbx header file + * Copyright © 2001 Johannes Erdfelt <johannes@erdfelt.com> + * Copyright © 2007-2008 Daniel Drake <dsd@gentoo.org> + * Copyright © 2012 Pete Batard <pete@akeo.ie> + * For more information, please visit: http://libusbx.org + * + * 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 (copy/paste from MinGW) */ +#ifndef _SSIZE_T_DEFINED +#define _SSIZE_T_DEFINED +#undef ssize_t +#ifdef _WIN64 + typedef __int64 ssize_t; +#else + typedef int ssize_t; +#endif /* _WIN64 */ +#endif /* _SSIZE_T_DEFINED */ +#endif /* _MSC_VER */ + +/* stdint.h is also not usually available on MS */ +#if defined(_MSC_VER) && (_MSC_VER < 1600) && (!defined(_STDINT)) && (!defined(_STDINT_H)) +typedef unsigned __int8 uint8_t; +typedef unsigned __int16 uint16_t; +typedef unsigned __int32 uint32_t; +#else +#include <stdint.h> +#endif + +#include <sys/types.h> +#include <time.h> +#include <limits.h> + +#if defined(__linux) || defined(__APPLE__) || defined(__CYGWIN__) +#include <sys/time.h> +#endif + +/* 'interface' might be defined as a macro on Windows, so we need to + * undefine it so as not to break the current libusbx 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 +#endif + +/** \def LIBUSB_CALL + * \ingroup misc + * libusbx'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 funcions in the generated assembly code). + * + * Matching the Windows API itself, libusbx 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 libusbx 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 libusbx + * 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 LIBUSBX_API_VERSION + * \ingroup misc + * libusbx's API version. + * + * Since version 1.0.13, to help with feature detection, libusbx defines + * a LIBUSBX_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 + * libusbx applications may want to detect at compilation time. + * + * The macro is typically used in an application as follows: + * \code + * #if defined(LIBUSBX_API_VERSION) && (LIBUSBX_API_VERSION >= 0x01001234) + * // Use one of the newer features from the libusbx API + * #endif + * \endcode + * + * Another feature of LIBUSBX_API_VERSION is that it can be used to detect + * whether you are compiling against the libusb or the libusbx library. + * + * Internally, LIBUSBX_API_VERSION is defined as follows: + * (libusbx major << 24) | (libusbx minor << 16) | (16 bit incremental) + */ +#define LIBUSBX_API_VERSION 0x010000FF + +#ifdef __cplusplus +extern "C" { +#endif + +/** \def libusb_cpu_to_le16 + * \ingroup 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] = x >> 8; + _tmp.b8[0] = x & 0xff; + return _tmp.b16; +} + +/** \def libusb_le16_to_cpu + * \ingroup 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 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 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 descriptor. See libusb_endpoint_descriptor. */ + LIBUSB_DT_ENDPOINT = 0x05, + + /** HID descriptor */ + LIBUSB_DT_HID = 0x21, + + /** HID report descriptor */ + LIBUSB_DT_REPORT = 0x22, + + /** Physical descriptor */ + LIBUSB_DT_PHYSICAL = 0x23, + + /** Hub descriptor */ + LIBUSB_DT_HUB = 0x29, + + /** SuperSpeed Hub descriptor */ + LIBUSB_DT_SUPERSPEED_HUB = 0x2A, +}; + +/* Descriptor sizes per descriptor type */ +#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 /* Audio extension */ +#define LIBUSB_DT_HUB_NONVAR_SIZE 7 + +#define LIBUSB_ENDPOINT_ADDRESS_MASK 0x0f /* in bEndpointAddress */ +#define LIBUSB_ENDPOINT_DIR_MASK 0x80 + +/** \ingroup desc + * Endpoint direction. Values for bit 7 of the + * \ref libusb_endpoint_descriptor::bEndpointAddress "endpoint address" scheme. + */ +enum libusb_endpoint_direction { + /** In: device-to-host */ + LIBUSB_ENDPOINT_IN = 0x80, + + /** Out: host-to-device */ + LIBUSB_ENDPOINT_OUT = 0x00 +}; + +#define LIBUSB_TRANSFER_TYPE_MASK 0x03 /* in bmAttributes */ + +/** \ingroup desc + * Endpoint transfer type. Values for bits 0:1 of the + * \ref libusb_endpoint_descriptor::bmAttributes "endpoint attributes" field. + */ +enum libusb_transfer_type { + /** Control endpoint */ + LIBUSB_TRANSFER_TYPE_CONTROL = 0, + + /** Isochronous endpoint */ + LIBUSB_TRANSFER_TYPE_ISOCHRONOUS = 1, + + /** Bulk endpoint */ + LIBUSB_TRANSFER_TYPE_BULK = 2, + + /** Interrupt endpoint */ + LIBUSB_TRANSFER_TYPE_INTERRUPT = 3 +}; + +/** \ingroup misc + * Standard requests, as defined in table 9-5 of the USB 3.0 specifications */ +enum libusb_standard_request { + /** Request status of the specific recipient */ + LIBUSB_REQUEST_GET_STATUS = 0x00, + + /** Clear or disable a specific feature */ + LIBUSB_REQUEST_CLEAR_FEATURE = 0x01, + + /* 0x02 is reserved */ + + /** Set or enable a specific feature */ + LIBUSB_REQUEST_SET_FEATURE = 0x03, + + /* 0x04 is reserved */ + + /** Set device address for all future accesses */ + LIBUSB_REQUEST_SET_ADDRESS = 0x05, + + /** Get the specified descriptor */ + LIBUSB_REQUEST_GET_DESCRIPTOR = 0x06, + + /** Used to update existing descriptors or add new descriptors */ + LIBUSB_REQUEST_SET_DESCRIPTOR = 0x07, + + /** Get the current device configuration value */ + LIBUSB_REQUEST_GET_CONFIGURATION = 0x08, + + /** Set device configuration */ + LIBUSB_REQUEST_SET_CONFIGURATION = 0x09, + + /** Return the selected alternate setting for the specified interface */ + LIBUSB_REQUEST_GET_INTERFACE = 0x0A, + + /** Select an alternate interface for the specified interface */ + LIBUSB_REQUEST_SET_INTERFACE = 0x0B, + + /** Set then report an endpoint's synchronization frame */ + LIBUSB_REQUEST_SYNCH_FRAME = 0x0C, + + /** Sets both the U1 and U2 Exit Latency */ + LIBUSB_REQUEST_SET_SEL = 0x30, + + /** Delay from the time a host transmits a packet to the time it is + * received by the device. */ + LIBUSB_SET_ISOCH_DELAY = 0x31, +}; + +/** \ingroup misc + * Request type bits of the + * \ref libusb_control_setup::bmRequestType "bmRequestType" field in control + * transfers. */ +enum libusb_request_type { + /** Standard */ + LIBUSB_REQUEST_TYPE_STANDARD = (0x00 << 5), + + /** Class */ + LIBUSB_REQUEST_TYPE_CLASS = (0x01 << 5), + + /** Vendor */ + LIBUSB_REQUEST_TYPE_VENDOR = (0x02 << 5), + + /** Reserved */ + LIBUSB_REQUEST_TYPE_RESERVED = (0x03 << 5) +}; + +/** \ingroup misc + * Recipient bits of the + * \ref libusb_control_setup::bmRequestType "bmRequestType" field in control + * transfers. Values 4 through 31 are reserved. */ +enum libusb_request_recipient { + /** Device */ + LIBUSB_RECIPIENT_DEVICE = 0x00, + + /** Interface */ + LIBUSB_RECIPIENT_INTERFACE = 0x01, + + /** Endpoint */ + LIBUSB_RECIPIENT_ENDPOINT = 0x02, + + /** Other */ + LIBUSB_RECIPIENT_OTHER = 0x03, +}; + +#define LIBUSB_ISO_SYNC_TYPE_MASK 0x0C + +/** \ingroup desc + * Synchronization type for isochronous endpoints. Values for bits 2:3 of the + * \ref libusb_endpoint_descriptor::bmAttributes "bmAttributes" field in + * libusb_endpoint_descriptor. + */ +enum libusb_iso_sync_type { + /** No synchronization */ + LIBUSB_ISO_SYNC_TYPE_NONE = 0, + + /** Asynchronous */ + LIBUSB_ISO_SYNC_TYPE_ASYNC = 1, + + /** Adaptive */ + LIBUSB_ISO_SYNC_TYPE_ADAPTIVE = 2, + + /** Synchronous */ + LIBUSB_ISO_SYNC_TYPE_SYNC = 3 +}; + +#define LIBUSB_ISO_USAGE_TYPE_MASK 0x30 + +/** \ingroup desc + * Usage type for isochronous endpoints. Values for bits 4:5 of the + * \ref libusb_endpoint_descriptor::bmAttributes "bmAttributes" field in + * libusb_endpoint_descriptor. + */ +enum libusb_iso_usage_type { + /** Data endpoint */ + LIBUSB_ISO_USAGE_TYPE_DATA = 0, + + /** Feedback endpoint */ + LIBUSB_ISO_USAGE_TYPE_FEEDBACK = 1, + + /** Implicit feedback Data endpoint */ + LIBUSB_ISO_USAGE_TYPE_IMPLICIT = 2, +}; + +/** \ingroup desc + * A structure representing the standard USB device descriptor. This + * descriptor is documented in section 9.6.1 of the USB 3.0 specification. + * All multiple-byte fields are represented in host-endian format. + */ +struct libusb_device_descriptor { + /** Size of this descriptor (in bytes) */ + uint8_t bLength; + + /** Descriptor type. Will have value + * \ref libusb_descriptor_type::LIBUSB_DT_DEVICE LIBUSB_DT_DEVICE in this + * context. */ + uint8_t bDescriptorType; + + /** USB specification release number in binary-coded decimal. A value of + * 0x0200 indicates USB 2.0, 0x0110 indicates USB 1.1, etc. */ + uint16_t bcdUSB; + + /** USB-IF class code for the device. See \ref libusb_class_code. */ + uint8_t bDeviceClass; + + /** USB-IF subclass code for the device, qualified by the bDeviceClass + * value */ + uint8_t bDeviceSubClass; + + /** USB-IF protocol code for the device, qualified by the bDeviceClass and + * bDeviceSubClass values */ + uint8_t bDeviceProtocol; + + /** Maximum packet size for endpoint 0 */ + uint8_t bMaxPacketSize0; + + /** USB-IF vendor ID */ + uint16_t idVendor; + + /** USB-IF product ID */ + uint16_t idProduct; + + /** Device release number in binary-coded decimal */ + uint16_t bcdDevice; + + /** Index of string descriptor describing manufacturer */ + uint8_t iManufacturer; + + /** Index of string descriptor describing product */ + uint8_t iProduct; + + /** Index of string descriptor containing device serial number */ + uint8_t iSerialNumber; + + /** Number of possible configurations */ + uint8_t bNumConfigurations; +}; + +/** \ingroup desc + * A structure representing the standard USB endpoint descriptor. This + * descriptor is documented in section 9.6.6 of the USB 3.0 specification. + * All multiple-byte fields are represented in host-endian format. + */ +struct libusb_endpoint_descriptor { + /** Size of this descriptor (in bytes) */ + uint8_t bLength; + + /** Descriptor type. Will have value + * \ref libusb_descriptor_type::LIBUSB_DT_ENDPOINT LIBUSB_DT_ENDPOINT in + * this context. */ + uint8_t bDescriptorType; + + /** The address of the endpoint described by this descriptor. Bits 0:3 are + * the endpoint number. Bits 4:6 are reserved. Bit 7 indicates direction, + * see \ref libusb_endpoint_direction. + */ + uint8_t bEndpointAddress; + + /** Attributes which apply to the endpoint when it is configured using + * the bConfigurationValue. Bits 0:1 determine the transfer type and + * correspond to \ref libusb_transfer_type. Bits 2:3 are only used for + * isochronous endpoints and correspond to \ref libusb_iso_sync_type. + * Bits 4:5 are also only used for isochronous endpoints and correspond to + * \ref libusb_iso_usage_type. Bits 6:7 are reserved. + */ + uint8_t bmAttributes; + + /** Maximum packet size this endpoint is capable of sending/receiving. */ + uint16_t wMaxPacketSize; + + /** Interval for polling endpoint for data transfers. */ + uint8_t bInterval; + + /** For audio devices only: the rate at which synchronization feedback + * is provided. */ + uint8_t bRefresh; + + /** For audio devices only: the address if the synch endpoint */ + uint8_t bSynchAddress; + + /** Extra descriptors. If libusbx encounters unknown endpoint descriptors, + * it will store them here, should you wish to parse them. */ + const unsigned char *extra; + + /** Length of the extra descriptors, in bytes. */ + int extra_length; +}; + +/** \ingroup desc + * A structure representing the standard USB interface descriptor. This + * descriptor is documented in section 9.6.5 of the USB 3.0 specification. + * All multiple-byte fields are represented in host-endian format. + */ +struct libusb_interface_descriptor { + /** Size of this descriptor (in bytes) */ + uint8_t bLength; + + /** Descriptor type. Will have value + * \ref libusb_descriptor_type::LIBUSB_DT_INTERFACE LIBUSB_DT_INTERFACE + * in this context. */ + uint8_t bDescriptorType; + + /** Number of this interface */ + uint8_t bInterfaceNumber; + + /** Value used to select this alternate setting for this interface */ + uint8_t bAlternateSetting; + + /** Number of endpoints used by this interface (excluding the control + * endpoint). */ + uint8_t bNumEndpoints; + + /** USB-IF class code for this interface. See \ref libusb_class_code. */ + uint8_t bInterfaceClass; + + /** USB-IF subclass code for this interface, qualified by the + * bInterfaceClass value */ + uint8_t bInterfaceSubClass; + + /** USB-IF protocol code for this interface, qualified by the + * bInterfaceClass and bInterfaceSubClass values */ + uint8_t bInterfaceProtocol; + + /** Index of string descriptor describing this interface */ + uint8_t iInterface; + + /** Array of endpoint descriptors. This length of this array is determined + * by the bNumEndpoints field. */ + const struct libusb_endpoint_descriptor *endpoint; + + /** Extra descriptors. If libusbx encounters unknown interface descriptors, + * it will store them here, should you wish to parse them. */ + const unsigned char *extra; + + /** Length of the extra descriptors, in bytes. */ + int extra_length; +}; + +/** \ingroup desc + * A collection of alternate settings for a particular USB interface. + */ +struct libusb_interface { + /** Array of interface descriptors. The length of this array is determined + * by the num_altsetting field. */ + const struct libusb_interface_descriptor *altsetting; + + /** The number of alternate settings that belong to this interface */ + int num_altsetting; +}; + +/** \ingroup desc + * A structure representing the standard USB configuration descriptor. This + * descriptor is documented in section 9.6.3 of the USB 3.0 specification. + * All multiple-byte fields are represented in host-endian format. + */ +struct libusb_config_descriptor { + /** Size of this descriptor (in bytes) */ + uint8_t bLength; + + /** Descriptor type. Will have value + * \ref libusb_descriptor_type::LIBUSB_DT_CONFIG LIBUSB_DT_CONFIG + * in this context. */ + uint8_t bDescriptorType; + + /** Total length of data returned for this configuration */ + uint16_t wTotalLength; + + /** Number of interfaces supported by this configuration */ + uint8_t bNumInterfaces; + + /** Identifier value for this configuration */ + uint8_t bConfigurationValue; + + /** Index of string descriptor describing this configuration */ + uint8_t iConfiguration; + + /** Configuration characteristics */ + uint8_t bmAttributes; + + /** Maximum power consumption of the USB device from this bus in this + * configuration when the device is fully opreation. Expressed in units + * of 2 mA. */ + uint8_t MaxPower; + + /** Array of interfaces supported by this configuration. The length of + * this array is determined by the bNumInterfaces field. */ + const struct libusb_interface *interface; + + /** Extra descriptors. If libusbx encounters unknown configuration + * descriptors, it will store them here, should you wish to parse them. */ + const unsigned char *extra; + + /** Length of the extra descriptors, in bytes. */ + int extra_length; +}; + +/** \ingroup asyncio + * Setup packet for control transfers. */ +struct libusb_control_setup { + /** Request type. Bits 0:4 determine recipient, see + * \ref libusb_request_recipient. Bits 5:6 determine type, see + * \ref libusb_request_type. Bit 7 determines data transfer direction, see + * \ref libusb_endpoint_direction. + */ + uint8_t bmRequestType; + + /** Request. If the type bits of bmRequestType are equal to + * \ref libusb_request_type::LIBUSB_REQUEST_TYPE_STANDARD + * "LIBUSB_REQUEST_TYPE_STANDARD" then this field refers to + * \ref libusb_standard_request. For other cases, use of this field is + * application-specific. */ + uint8_t bRequest; + + /** Value. Varies according to request */ + uint16_t wValue; + + /** Index. Varies according to request, typically used to pass an index + * or offset */ + uint16_t wIndex; + + /** Number of bytes to transfer */ + uint16_t wLength; +}; + +#define LIBUSB_CONTROL_SETUP_SIZE (sizeof(struct libusb_control_setup)) + +/* libusbx */ + +struct libusb_context; +struct libusb_device; +struct libusb_device_handle; + +/** \ingroup lib + * Structure providing the version of the libusbx runtime + */ +struct libusb_version { + /** Library major version. */ + const uint16_t major; + + /** Library minor version. */ + const uint16_t minor; + + /** Library micro version. */ + const uint16_t micro; + + /** Library nano version. */ + const uint16_t nano; + + /** Library release candidate suffix string, e.g. "-rc4". */ + const char *rc; + + /** For ABI compatibility only. */ + const char* describe; +}; + +/** \ingroup lib + * Structure representing a libusbx session. The concept of individual libusbx + * sessions allows for your program to use two libraries (or dynamically + * load two modules) which both independently use libusb. This will prevent + * interference between the individual libusbx users - for example + * libusb_set_debug() will not affect the other user of the library, and + * libusb_exit() will not destroy resources that the other user is still + * using. + * + * Sessions are created by libusb_init() and destroyed through libusb_exit(). + * If your application is guaranteed to only ever include a single libusbx + * user (i.e. you), you do not have to worry about contexts: pass NULL in + * every function call where a context is required. The default context + * will be used. + * + * For more information, see \ref contexts. + */ +typedef struct libusb_context libusb_context; + +/** \ingroup dev + * Structure representing a USB device detected on the system. This is an + * opaque type for which you are only ever provided with a pointer, usually + * originating from libusb_get_device_list(). + * + * Certain operations can be performed on a device, but in order to do any + * I/O you will have to first obtain a device handle using libusb_open(). + * + * Devices are reference counted with libusb_device_ref() and + * libusb_device_unref(), and are freed when the reference count reaches 0. + * New devices presented by libusb_get_device_list() have a reference count of + * 1, and libusb_free_device_list() can optionally decrease the reference count + * on all devices in the list. libusb_open() adds another reference which is + * later destroyed by libusb_close(). + */ +typedef struct libusb_device libusb_device; + + +/** \ingroup dev + * Structure representing a handle on a USB device. This is an opaque type for + * which you are only ever provided with a pointer, usually originating from + * libusb_open(). + * + * A device handle is used to perform I/O and other operations. When finished + * with a device handle, you should call libusb_close(). + */ +typedef struct libusb_device_handle libusb_device_handle; + +/** \ingroup dev + * Speed codes. Indicates the speed at which the device is operating. + */ +enum libusb_speed { + /** The OS doesn't report or know the device speed. */ + LIBUSB_SPEED_UNKNOWN = 0, + + /** The device is operating at low speed (1.5MBit/s). */ + LIBUSB_SPEED_LOW = 1, + + /** The device is operating at full speed (12MBit/s). */ + LIBUSB_SPEED_FULL = 2, + + /** The device is operating at high speed (480MBit/s). */ + LIBUSB_SPEED_HIGH = 3, + + /** The device is operating at super speed (5000MBit/s). */ + LIBUSB_SPEED_SUPER = 4, +}; + +/** \ingroup misc + * Error codes. Most libusbx functions return 0 on success or one of these + * codes on failure. + * You can call \ref libusb_error_name() to retrieve a string representation + * of an error code. + */ +enum libusb_error { + /** Success (no error) */ + LIBUSB_SUCCESS = 0, + + /** Input/output error */ + LIBUSB_ERROR_IO = -1, + + /** Invalid parameter */ + LIBUSB_ERROR_INVALID_PARAM = -2, + + /** Access denied (insufficient permissions) */ + LIBUSB_ERROR_ACCESS = -3, + + /** No such device (it may have been disconnected) */ + LIBUSB_ERROR_NO_DEVICE = -4, + + /** Entity not found */ + LIBUSB_ERROR_NOT_FOUND = -5, + + /** Resource busy */ + LIBUSB_ERROR_BUSY = -6, + + /** Operation timed out */ + LIBUSB_ERROR_TIMEOUT = -7, + + /** Overflow */ + LIBUSB_ERROR_OVERFLOW = -8, + + /** Pipe error */ + LIBUSB_ERROR_PIPE = -9, + + /** System call interrupted (perhaps due to signal) */ + LIBUSB_ERROR_INTERRUPTED = -10, + + /** Insufficient memory */ + LIBUSB_ERROR_NO_MEM = -11, + + /** Operation not supported or unimplemented on this platform */ + LIBUSB_ERROR_NOT_SUPPORTED = -12, + + /* NB! Remember to update libusb_error_name() + when adding new error codes here. */ + + /** Other error */ + LIBUSB_ERROR_OTHER = -99, +}; + +/** \ingroup asyncio + * Transfer status codes */ +enum libusb_transfer_status { + /** Transfer completed without error. Note that this does not indicate + * that the entire amount of requested data was transferred. */ + LIBUSB_TRANSFER_COMPLETED, + + /** Transfer failed */ + LIBUSB_TRANSFER_ERROR, + + /** Transfer timed out */ + LIBUSB_TRANSFER_TIMED_OUT, + + /** Transfer was cancelled */ + LIBUSB_TRANSFER_CANCELLED, + + /** For bulk/interrupt endpoints: halt condition detected (endpoint + * stalled). For control endpoints: control request not supported. */ + LIBUSB_TRANSFER_STALL, + + /** Device was disconnected */ + LIBUSB_TRANSFER_NO_DEVICE, + + /** Device sent more data than requested */ + LIBUSB_TRANSFER_OVERFLOW, + + /* NB! Remember to update libusb_error_name() + when adding new status codes here. */ +}; + +/** \ingroup asyncio + * libusb_transfer.flags values */ +enum libusb_transfer_flags { + /** Report short frames as errors */ + LIBUSB_TRANSFER_SHORT_NOT_OK = 1<<0, + + /** Automatically free() transfer buffer during libusb_free_transfer() */ + LIBUSB_TRANSFER_FREE_BUFFER = 1<<1, + + /** Automatically call libusb_free_transfer() after callback returns. + * If this flag is set, it is illegal to call libusb_free_transfer() + * from your transfer callback, as this will result in a double-free + * when this flag is acted upon. */ + LIBUSB_TRANSFER_FREE_TRANSFER = 1<<2, + + /** Terminate transfers that are a multiple of the endpoint's + * wMaxPacketSize with an extra zero length packet. This is useful + * when a device protocol mandates that each logical request is + * terminated by an incomplete packet (i.e. the logical requests are + * not separated by other means). + * + * This flag only affects host-to-device transfers to bulk and interrupt + * endpoints. In other situations, it is ignored. + * + * This flag only affects transfers with a length that is a multiple of + * the endpoint's wMaxPacketSize. On transfers of other lengths, this + * flag has no effect. Therefore, if you are working with a device that + * needs a ZLP whenever the end of the logical request falls on a packet + * boundary, then it is sensible to set this flag on <em>every</em> + * transfer (you do not have to worry about only setting it on transfers + * that end on the boundary). + * + * This flag is currently only supported on Linux. + * On other systems, libusb_submit_transfer() will return + * LIBUSB_ERROR_NOT_SUPPORTED for every transfer where this flag is set. + * + * Available since libusb-1.0.9. + */ + LIBUSB_TRANSFER_ADD_ZERO_PACKET = 1 << 3, +}; + +/** \ingroup asyncio + * Isochronous packet descriptor. */ +struct libusb_iso_packet_descriptor { + /** Length of data to request in this packet */ + unsigned int length; + + /** Amount of data that was actually transferred */ + unsigned int actual_length; + + /** Status code for this packet */ + enum libusb_transfer_status status; +}; + +struct libusb_transfer; + +/** \ingroup asyncio + * Asynchronous transfer callback function type. When submitting asynchronous + * transfers, you pass a pointer to a callback function of this type via the + * \ref libusb_transfer::callback "callback" member of the libusb_transfer + * structure. libusbx will call this function later, when the transfer has + * completed or failed. See \ref asyncio for more information. + * \param transfer The libusb_transfer struct the callback function is being + * notified about. + */ +typedef void (LIBUSB_CALL *libusb_transfer_cb_fn)(struct libusb_transfer *transfer); + +/** \ingroup asyncio + * The generic USB transfer structure. The user populates this structure and + * then submits it in order to request a transfer. After the transfer has + * completed, the library populates the transfer with the results and passes + * it back to the user. + */ +struct libusb_transfer { + /** Handle of the device that this transfer will be submitted to */ + libusb_device_handle *dev_handle; + + /** A bitwise OR combination of \ref libusb_transfer_flags. */ + uint8_t flags; + + /** Address of the endpoint where this transfer will be sent. */ + unsigned char endpoint; + + /** Type of the endpoint from \ref libusb_transfer_type */ + unsigned char type; + + /** Timeout for this transfer in millseconds. A value of 0 indicates no + * timeout. */ + unsigned int timeout; + + /** The status of the transfer. Read-only, and only for use within + * transfer callback function. + * + * If this is an isochronous transfer, this field may read COMPLETED even + * if there were errors in the frames. Use the + * \ref libusb_iso_packet_descriptor::status "status" field in each packet + * to determine if errors occurred. */ + enum libusb_transfer_status status; + + /** Length of the data buffer */ + int length; + + /** Actual length of data that was transferred. Read-only, and only for + * use within transfer callback function. Not valid for isochronous + * endpoint transfers. */ + int actual_length; + + /** Callback function. This will be invoked when the transfer completes, + * fails, or is cancelled. */ + libusb_transfer_cb_fn callback; + + /** User context data to pass to the callback function. */ + void *user_data; + + /** Data buffer */ + unsigned char *buffer; + + /** Number of isochronous packets. Only used for I/O with isochronous + * endpoints. */ + int num_iso_packets; + + /** Isochronous packet descriptors, for isochronous transfers only. */ + struct libusb_iso_packet_descriptor iso_packet_desc +#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) + [] /* valid C99 code */ +#else + [0] /* non-standard, but usually working code */ +#endif + ; +}; + +/** \ingroup misc + * Capabilities supported by this instance of libusb. Test if the loaded + * library supports a given capability by calling + * \ref libusb_has_capability(). + */ +enum libusb_capability { + /** The libusb_has_capability() API is available. */ + LIBUSB_CAP_HAS_CAPABILITY = 0, +}; + +/** \ingroup lib + * Log message levels. + * - LIBUSB_LOG_LEVEL_NONE (0) : no messages ever printed by the library (default) + * - LIBUSB_LOG_LEVEL_ERROR (1) : error messages are printed to stderr + * - LIBUSB_LOG_LEVEL_WARNING (2) : warning and error messages are printed to stderr + * - LIBUSB_LOG_LEVEL_INFO (3) : informational messages are printed to stdout, warning + * and error messages are printed to stderr + * - LIBUSB_LOG_LEVEL_DEBUG (4) : debug and informational messages are printed to stdout, + * warnings and errors to stderr + */ +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, +}; + +int LIBUSB_CALL libusb_init(libusb_context **ctx); +void LIBUSB_CALL libusb_exit(libusb_context *ctx); +void LIBUSB_CALL libusb_set_debug(libusb_context *ctx, int level); +const struct libusb_version * LIBUSB_CALL libusb_get_version(void); +int LIBUSB_CALL libusb_has_capability(uint32_t capability); +const char * LIBUSB_CALL libusb_error_name(int errcode); + +ssize_t LIBUSB_CALL libusb_get_device_list(libusb_context *ctx, + libusb_device ***list); +void LIBUSB_CALL libusb_free_device_list(libusb_device **list, + int unref_devices); +libusb_device * LIBUSB_CALL libusb_ref_device(libusb_device *dev); +void LIBUSB_CALL libusb_unref_device(libusb_device *dev); + +int LIBUSB_CALL libusb_get_configuration(libusb_device_handle *dev, + int *config); +int LIBUSB_CALL libusb_get_device_descriptor(libusb_device *dev, + struct libusb_device_descriptor *desc); +int LIBUSB_CALL libusb_get_active_config_descriptor(libusb_device *dev, + struct libusb_config_descriptor **config); +int LIBUSB_CALL libusb_get_config_descriptor(libusb_device *dev, + uint8_t config_index, struct libusb_config_descriptor **config); +int LIBUSB_CALL libusb_get_config_descriptor_by_value(libusb_device *dev, + uint8_t bConfigurationValue, struct libusb_config_descriptor **config); +void LIBUSB_CALL libusb_free_config_descriptor( + struct libusb_config_descriptor *config); +uint8_t LIBUSB_CALL libusb_get_bus_number(libusb_device *dev); +uint8_t LIBUSB_CALL libusb_get_port_number(libusb_device *dev); +libusb_device * LIBUSB_CALL libusb_get_parent(libusb_device *dev); +int LIBUSB_CALL libusb_get_port_path(libusb_context *ctx, libusb_device *dev, uint8_t* path, uint8_t path_length); +uint8_t LIBUSB_CALL libusb_get_device_address(libusb_device *dev); +int LIBUSB_CALL libusb_get_device_speed(libusb_device *dev); +int LIBUSB_CALL libusb_get_max_packet_size(libusb_device *dev, + unsigned char endpoint); +int LIBUSB_CALL libusb_get_max_iso_packet_size(libusb_device *dev, + unsigned char endpoint); + +int LIBUSB_CALL libusb_open(libusb_device *dev, libusb_device_handle **handle); +void LIBUSB_CALL libusb_close(libusb_device_handle *dev_handle); +libusb_device * LIBUSB_CALL libusb_get_device(libusb_device_handle *dev_handle); + +int LIBUSB_CALL libusb_set_configuration(libusb_device_handle *dev, + int configuration); +int LIBUSB_CALL libusb_claim_interface(libusb_device_handle *dev, + int interface_number); +int LIBUSB_CALL libusb_release_interface(libusb_device_handle *dev, + int interface_number); + +libusb_device_handle * LIBUSB_CALL libusb_open_device_with_vid_pid( + libusb_context *ctx, uint16_t vendor_id, uint16_t product_id); + +int LIBUSB_CALL libusb_set_interface_alt_setting(libusb_device_handle *dev, + int interface_number, int alternate_setting); +int LIBUSB_CALL libusb_clear_halt(libusb_device_handle *dev, + unsigned char endpoint); +int LIBUSB_CALL libusb_reset_device(libusb_device_handle *dev); + +int LIBUSB_CALL libusb_kernel_driver_active(libusb_device_handle *dev, + int interface_number); +int LIBUSB_CALL libusb_detach_kernel_driver(libusb_device_handle *dev, + int interface_number); +int LIBUSB_CALL libusb_attach_kernel_driver(libusb_device_handle *dev, + int interface_number); + +/* async I/O */ + +/** \ingroup asyncio + * Get the data section of a control transfer. This convenience function is here + * to remind you that the data does not start until 8 bytes into the actual + * buffer, as the setup packet comes first. + * + * Calling this function only makes sense from a transfer callback function, + * or situations where you have already allocated a suitably sized buffer at + * transfer->buffer. + * + * \param transfer a transfer + * \returns pointer to the first byte of the data section + */ +static inline unsigned char *libusb_control_transfer_get_data( + struct libusb_transfer *transfer) +{ + return transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE; +} + +/** \ingroup asyncio + * Get the control setup packet of a control transfer. This convenience + * function is here to remind you that the control setup occupies the first + * 8 bytes of the transfer data buffer. + * + * Calling this function only makes sense from a transfer callback function, + * or situations where you have already allocated a suitably sized buffer at + * transfer->buffer. + * + * \param transfer a transfer + * \returns a casted pointer to the start of the transfer data buffer + */ +static inline struct libusb_control_setup *libusb_control_transfer_get_setup( + struct libusb_transfer *transfer) +{ + return (struct libusb_control_setup *) transfer->buffer; +} + +/** \ingroup asyncio + * Helper function to populate the setup packet (first 8 bytes of the data + * buffer) for a control transfer. The wIndex, wValue and wLength values should + * be given in host-endian byte order. + * + * \param buffer buffer to output the setup packet into + * \param bmRequestType see the + * \ref libusb_control_setup::bmRequestType "bmRequestType" field of + * \ref libusb_control_setup + * \param bRequest see the + * \ref libusb_control_setup::bRequest "bRequest" field of + * \ref libusb_control_setup + * \param wValue see the + * \ref libusb_control_setup::wValue "wValue" field of + * \ref libusb_control_setup + * \param wIndex see the + * \ref libusb_control_setup::wIndex "wIndex" field of + * \ref libusb_control_setup + * \param wLength see the + * \ref libusb_control_setup::wLength "wLength" field of + * \ref libusb_control_setup + */ +static inline void libusb_fill_control_setup(unsigned char *buffer, + uint8_t bmRequestType, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, + uint16_t wLength) +{ + struct libusb_control_setup *setup = (struct libusb_control_setup *) buffer; + setup->bmRequestType = bmRequestType; + setup->bRequest = bRequest; + setup->wValue = libusb_cpu_to_le16(wValue); + setup->wIndex = libusb_cpu_to_le16(wIndex); + setup->wLength = libusb_cpu_to_le16(wLength); +} + +struct libusb_transfer * LIBUSB_CALL libusb_alloc_transfer(int iso_packets); +int LIBUSB_CALL libusb_submit_transfer(struct libusb_transfer *transfer); +int LIBUSB_CALL libusb_cancel_transfer(struct libusb_transfer *transfer); +void LIBUSB_CALL libusb_free_transfer(struct libusb_transfer *transfer); + +/** \ingroup asyncio + * Helper function to populate the required \ref libusb_transfer fields + * for a control transfer. + * + * If you pass a transfer buffer to this function, the first 8 bytes will + * be interpreted as a control setup packet, and the wLength field will be + * used to automatically populate the \ref libusb_transfer::length "length" + * field of the transfer. Therefore the recommended approach is: + * -# Allocate a suitably sized data buffer (including space for control setup) + * -# Call libusb_fill_control_setup() + * -# If this is a host-to-device transfer with a data stage, put the data + * in place after the setup packet + * -# Call this function + * -# Call libusb_submit_transfer() + * + * It is also legal to pass a NULL buffer to this function, in which case this + * function will not attempt to populate the length field. Remember that you + * must then populate the buffer and length fields later. + * + * \param transfer the transfer to populate + * \param dev_handle handle of the device that will handle the transfer + * \param buffer data buffer. If provided, this function will interpret the + * first 8 bytes as a setup packet and infer the transfer length from that. + * \param callback callback function to be invoked on transfer completion + * \param user_data user data to pass to callback function + * \param timeout timeout for the transfer in milliseconds + */ +static inline void libusb_fill_control_transfer( + struct libusb_transfer *transfer, libusb_device_handle *dev_handle, + unsigned char *buffer, libusb_transfer_cb_fn callback, void *user_data, + unsigned int timeout) +{ + struct libusb_control_setup *setup = (struct libusb_control_setup *) buffer; + transfer->dev_handle = dev_handle; + transfer->endpoint = 0; + transfer->type = LIBUSB_TRANSFER_TYPE_CONTROL; + transfer->timeout = timeout; + transfer->buffer = buffer; + if (setup) + transfer->length = LIBUSB_CONTROL_SETUP_SIZE + + libusb_le16_to_cpu(setup->wLength); + transfer->user_data = user_data; + transfer->callback = callback; +} + +/** \ingroup asyncio + * Helper function to populate the required \ref libusb_transfer fields + * for a bulk transfer. + * + * \param transfer the transfer to populate + * \param dev_handle handle of the device that will handle the transfer + * \param endpoint address of the endpoint where this transfer will be sent + * \param buffer data buffer + * \param length length of data buffer + * \param callback callback function to be invoked on transfer completion + * \param user_data user data to pass to callback function + * \param timeout timeout for the transfer in milliseconds + */ +static inline void libusb_fill_bulk_transfer(struct libusb_transfer *transfer, + libusb_device_handle *dev_handle, unsigned char endpoint, + unsigned char *buffer, int length, libusb_transfer_cb_fn callback, + void *user_data, unsigned int timeout) +{ + transfer->dev_handle = dev_handle; + transfer->endpoint = endpoint; + transfer->type = LIBUSB_TRANSFER_TYPE_BULK; + transfer->timeout = timeout; + transfer->buffer = buffer; + transfer->length = length; + transfer->user_data = user_data; + transfer->callback = callback; +} + +/** \ingroup asyncio + * Helper function to populate the required \ref libusb_transfer fields + * for an interrupt transfer. + * + * \param transfer the transfer to populate + * \param dev_handle handle of the device that will handle the transfer + * \param endpoint address of the endpoint where this transfer will be sent + * \param buffer data buffer + * \param length length of data buffer + * \param callback callback function to be invoked on transfer completion + * \param user_data user data to pass to callback function + * \param timeout timeout for the transfer in milliseconds + */ +static inline void libusb_fill_interrupt_transfer( + struct libusb_transfer *transfer, libusb_device_handle *dev_handle, + unsigned char endpoint, unsigned char *buffer, int length, + libusb_transfer_cb_fn callback, void *user_data, unsigned int timeout) +{ + transfer->dev_handle = dev_handle; + transfer->endpoint = endpoint; + transfer->type = LIBUSB_TRANSFER_TYPE_INTERRUPT; + transfer->timeout = timeout; + transfer->buffer = buffer; + transfer->length = length; + transfer->user_data = user_data; + transfer->callback = callback; +} + +/** \ingroup asyncio + * Helper function to populate the required \ref libusb_transfer fields + * for an isochronous transfer. + * + * \param transfer the transfer to populate + * \param dev_handle handle of the device that will handle the transfer + * \param endpoint address of the endpoint where this transfer will be sent + * \param buffer data buffer + * \param length length of data buffer + * \param num_iso_packets the number of isochronous packets + * \param callback callback function to be invoked on transfer completion + * \param user_data user data to pass to callback function + * \param timeout timeout for the transfer in milliseconds + */ +static inline void libusb_fill_iso_transfer(struct libusb_transfer *transfer, + libusb_device_handle *dev_handle, unsigned char endpoint, + unsigned char *buffer, int length, int num_iso_packets, + libusb_transfer_cb_fn callback, void *user_data, unsigned int timeout) +{ + transfer->dev_handle = dev_handle; + transfer->endpoint = endpoint; + transfer->type = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS; + transfer->timeout = timeout; + transfer->buffer = buffer; + transfer->length = length; + transfer->num_iso_packets = num_iso_packets; + transfer->user_data = user_data; + transfer->callback = callback; +} + +/** \ingroup asyncio + * Convenience function to set the length of all packets in an isochronous + * transfer, based on the num_iso_packets field in the transfer structure. + * + * \param transfer a transfer + * \param length the length to set in each isochronous packet descriptor + * \see libusb_get_max_packet_size() + */ +static inline void libusb_set_iso_packet_lengths( + struct libusb_transfer *transfer, unsigned int length) +{ + int i; + for (i = 0; i < transfer->num_iso_packets; i++) + transfer->iso_packet_desc[i].length = length; +} + +/** \ingroup asyncio + * Convenience function to locate the position of an isochronous packet + * within the buffer of an isochronous transfer. + * + * This is a thorough function which loops through all preceding packets, + * accumulating their lengths to find the position of the specified packet. + * Typically you will assign equal lengths to each packet in the transfer, + * and hence the above method is sub-optimal. You may wish to use + * libusb_get_iso_packet_buffer_simple() instead. + * + * \param transfer a transfer + * \param packet the packet to return the address of + * \returns the base address of the packet buffer inside the transfer buffer, + * or NULL if the packet does not exist. + * \see libusb_get_iso_packet_buffer_simple() + */ +static inline unsigned char *libusb_get_iso_packet_buffer( + struct libusb_transfer *transfer, unsigned int packet) +{ + int i; + size_t offset = 0; + int _packet; + + /* oops..slight bug in the API. packet is an unsigned int, but we use + * signed integers almost everywhere else. range-check and convert to + * signed to avoid compiler warnings. FIXME for libusb-2. */ + if (packet > INT_MAX) + return NULL; + _packet = packet; + + if (_packet >= transfer->num_iso_packets) + return NULL; + + for (i = 0; i < _packet; i++) + offset += transfer->iso_packet_desc[i].length; + + return transfer->buffer + offset; +} + +/** \ingroup asyncio + * Convenience function to locate the position of an isochronous packet + * within the buffer of an isochronous transfer, for transfers where each + * packet is of identical size. + * + * This function relies on the assumption that every packet within the transfer + * is of identical size to the first packet. Calculating the location of + * the packet buffer is then just a simple calculation: + * <tt>buffer + (packet_size * packet)</tt> + * + * Do not use this function on transfers other than those that have identical + * packet lengths for each packet. + * + * \param transfer a transfer + * \param packet the packet to return the address of + * \returns the base address of the packet buffer inside the transfer buffer, + * or NULL if the packet does not exist. + * \see libusb_get_iso_packet_buffer() + */ +static inline unsigned char *libusb_get_iso_packet_buffer_simple( + struct libusb_transfer *transfer, unsigned int packet) +{ + int _packet; + + /* oops..slight bug in the API. packet is an unsigned int, but we use + * signed integers almost everywhere else. range-check and convert to + * signed to avoid compiler warnings. FIXME for libusb-2. */ + if (packet > INT_MAX) + return NULL; + _packet = packet; + + if (_packet >= transfer->num_iso_packets) + return NULL; + + return transfer->buffer + (transfer->iso_packet_desc[0].length * _packet); +} + +/* sync I/O */ + +int LIBUSB_CALL libusb_control_transfer(libusb_device_handle *dev_handle, + uint8_t request_type, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, + unsigned char *data, uint16_t wLength, unsigned int timeout); + +int LIBUSB_CALL libusb_bulk_transfer(libusb_device_handle *dev_handle, + unsigned char endpoint, unsigned char *data, int length, + int *actual_length, unsigned int timeout); + +int LIBUSB_CALL libusb_interrupt_transfer(libusb_device_handle *dev_handle, + unsigned char endpoint, unsigned char *data, int length, + int *actual_length, unsigned int timeout); + +/** \ingroup desc + * Retrieve a descriptor from the default control pipe. + * This is a convenience function which formulates the appropriate control + * message to retrieve the descriptor. + * + * \param dev a device handle + * \param desc_type the descriptor type, see \ref libusb_descriptor_type + * \param desc_index the index of the descriptor to retrieve + * \param data output buffer for descriptor + * \param length size of data buffer + * \returns number of bytes returned in data, or LIBUSB_ERROR code on failure + */ +static inline int libusb_get_descriptor(libusb_device_handle *dev, + uint8_t desc_type, uint8_t desc_index, unsigned char *data, int length) +{ + return libusb_control_transfer(dev, LIBUSB_ENDPOINT_IN, + LIBUSB_REQUEST_GET_DESCRIPTOR, (desc_type << 8) | desc_index, 0, data, + (uint16_t) length, 1000); +} + +/** \ingroup desc + * Retrieve a descriptor from a device. + * This is a convenience function which formulates the appropriate control + * message to retrieve the descriptor. The string returned is Unicode, as + * detailed in the USB specifications. + * + * \param dev a device handle + * \param desc_index the index of the descriptor to retrieve + * \param langid the language ID for the string descriptor + * \param data output buffer for descriptor + * \param length size of data buffer + * \returns number of bytes returned in data, or LIBUSB_ERROR code on failure + * \see libusb_get_string_descriptor_ascii() + */ +static inline int libusb_get_string_descriptor(libusb_device_handle *dev, + uint8_t desc_index, uint16_t langid, unsigned char *data, int length) +{ + return libusb_control_transfer(dev, LIBUSB_ENDPOINT_IN, + LIBUSB_REQUEST_GET_DESCRIPTOR, (uint16_t)((LIBUSB_DT_STRING << 8) | desc_index), + langid, data, (uint16_t) length, 1000); +} + +int LIBUSB_CALL libusb_get_string_descriptor_ascii(libusb_device_handle *dev, + uint8_t desc_index, unsigned char *data, int length); + +/* polling and timeouts */ + +int LIBUSB_CALL libusb_try_lock_events(libusb_context *ctx); +void LIBUSB_CALL libusb_lock_events(libusb_context *ctx); +void LIBUSB_CALL libusb_unlock_events(libusb_context *ctx); +int LIBUSB_CALL libusb_event_handling_ok(libusb_context *ctx); +int LIBUSB_CALL libusb_event_handler_active(libusb_context *ctx); +void LIBUSB_CALL libusb_lock_event_waiters(libusb_context *ctx); +void LIBUSB_CALL libusb_unlock_event_waiters(libusb_context *ctx); +int LIBUSB_CALL libusb_wait_for_event(libusb_context *ctx, struct timeval *tv); + +int LIBUSB_CALL libusb_handle_events_timeout(libusb_context *ctx, + struct timeval *tv); +int LIBUSB_CALL libusb_handle_events_timeout_completed(libusb_context *ctx, + struct timeval *tv, int *completed); +int LIBUSB_CALL libusb_handle_events(libusb_context *ctx); +int LIBUSB_CALL libusb_handle_events_completed(libusb_context *ctx, int *completed); +int LIBUSB_CALL libusb_handle_events_locked(libusb_context *ctx, + struct timeval *tv); +int LIBUSB_CALL libusb_pollfds_handle_timeouts(libusb_context *ctx); +int LIBUSB_CALL libusb_get_next_timeout(libusb_context *ctx, + struct timeval *tv); + +/** \ingroup poll + * File descriptor for polling + */ +struct libusb_pollfd { + /** Numeric file descriptor */ + int fd; + + /** Event flags to poll for from <poll.h>. POLLIN indicates that you + * should monitor this file descriptor for becoming ready to read from, + * and POLLOUT indicates that you should monitor this file descriptor for + * nonblocking write readiness. */ + short events; +}; + +/** \ingroup poll + * Callback function, invoked when a new file descriptor should be added + * to the set of file descriptors monitored for events. + * \param fd the new file descriptor + * \param events events to monitor for, see \ref libusb_pollfd for a + * description + * \param user_data User data pointer specified in + * libusb_set_pollfd_notifiers() call + * \see libusb_set_pollfd_notifiers() + */ +typedef void (LIBUSB_CALL *libusb_pollfd_added_cb)(int fd, short events, + void *user_data); + +/** \ingroup poll + * Callback function, invoked when a file descriptor should be removed from + * the set of file descriptors being monitored for events. After returning + * from this callback, do not use that file descriptor again. + * \param fd the file descriptor to stop monitoring + * \param user_data User data pointer specified in + * libusb_set_pollfd_notifiers() call + * \see libusb_set_pollfd_notifiers() + */ +typedef void (LIBUSB_CALL *libusb_pollfd_removed_cb)(int fd, void *user_data); + +const struct libusb_pollfd ** LIBUSB_CALL libusb_get_pollfds( + libusb_context *ctx); +void LIBUSB_CALL libusb_set_pollfd_notifiers(libusb_context *ctx, + libusb_pollfd_added_cb added_cb, libusb_pollfd_removed_cb removed_cb, + void *user_data); + +#ifdef __cplusplus +} +#endif + +#endif |